SUNNY CENTRAL 500CP-US/CA / 500CP-US/CA 600V / 630CP

SCCP-US-BE-US_en-52 | 98-118200.03 | Version 5.2 AMERICAN ENGLISH

Operating ManualSUNNY CENTRAL 500CP-US/CA / 500CP-US/CA 600V / 630CP-US/CA / 720CP-US/CA / 750CP-US/CA / 800CP-US/CA / 850CP-US/CA / 900CP-US/CA

Legal Provisions SMA America, LLC

2 SCCP-US-BE-US_en-52 Operating Manual

Legal ProvisionsCopyright © 2014 SMA America, LLC. All rights reserved.No part of this document may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means, be it electronic, mechanical, photographic, magnetic or otherwise, without the prior written permission of SMA America, LLC.Neither SMA America, LLC nor SMA Solar Technology Canada Inc. makes representations, express or implied, with respect to this documentation or any of the equipment and/or software it may describe, including (with no limitation) any implied warranties of utility, merchantability, or fitness for any particular purpose. All such warranties are expressly disclaimed. Neither SMA America, LLC nor its distributors or dealers nor SMA Solar Technology Canada Inc. nor its distributors or dealers shall be liable for any indirect, incidental, or consequential damages under any circumstances.(The exclusion of implied warranties may not apply in all cases under some statutes, and thus the above exclusion may not apply.)Specifications are subject to change without notice. Every attempt has been made to make this document complete, accurate and up-to-date. Readers are cautioned, however, that SMA America, LLC and SMA Solar Technology Canada Inc. reserve the right to make changes without notice and shall not be responsible for any damages, including indirect, incidental or consequential damages, caused by reliance on the material presented, including, but not limited to, omissions, typographical errors, arithmetical errors or listing errors in the content material.TrademarksAll trademarks are recognized, even if not explicitly identified as such. A lack of identification does not mean that a product or symbol is not trademarked.The Bluetooth® word mark and logos are registered trademarks owned by Bluetooth SIG, Inc. and any use of these marks by SMA America, LLC and SMA Solar Technology Canada Inc. is under license.Modbus® is a registered trademark of Schneider Electric and is licensed by the Modbus Organization, Inc.QR Code® is a registered trademark of DENSO WAVE INCORPORATED.Phillips® and Pozidriv® are registered trademarks of Phillips Screw Company.Torx® is a registered trademark of Acument Global Technologies, Inc.

SMA America, LLC3801 N. Havana Street

Denver, CO 80239 U.S.A.

SMA Solar Technology Canada Inc.2425 Matheson Blvd. E

7th FloorMississauga, ON L4W 5K4

Canada

SMA America, LLC Important Safety Instructions

Operating Manual SCCP-US-BE-US_en-52 3

Important Safety InstructionsSAVE THESE INSTRUCTIONSThis manual contains important instructions for the following products:

• SC 500CP-US-10 (Sunny Central 500CP-US/CA)• SC 500CP-US-10 600V (Sunny Central 500CP-US/CA 600V)• SC 630CP-US-10 (Sunny Central 630CP-US/CA)• SC 720CP-US-10 (Sunny Central 720CP-US/CA)• SC 750CP-US-10 (Sunny Central 750CP-US/CA)• SC 800CP-US-10 (Sunny Central 800CP-US/CA)• SC 850CP-US-10 (Sunny Central 850CP-US/CA)• SC 900CP-US-10 (Sunny Central 900CP-US/CA)

This manual must be followed during installation and maintenance.

The product is designed and tested in accordance with international safety requirements, but as with all electrical and electronic equipment, certain precautions must be observed when installing and/or operating the product. To reduce the risk of personal injury and to ensure the safe installation and operation of the product, you must carefully read and follow all instructions, cautions and warnings in this manual.

Warnings in this documentA warning describes a hazard to equipment or personnel. It calls attention to a procedure or practice, which, if not correctly performed or adhered to, could result in damage to or destruction of part or all of the SMA equipment and/or other equipment connected to the SMA equipment or personal injury.Symbol Description

DANGER indicates a hazardous situation which, if not avoided, will result in death or serious injury.WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.NOTICE is used to address practices not related to personal injury.

General Warnings SMA America, LLC


Warnings on this productThe following symbols are used as product markings with the following meanings.

General Warnings

Symbol DescriptionWarning regarding dangerous voltageThe product works with high voltages. All work on the product must only be performed as described in the documentation of the product.Beware of hot surfaceThe product can become hot during operation. Do not touch the product during operation.

Electric arc hazardsThe product has large electrical potential differences between its conductors. Arc flashes can occur through air when high-voltage current flows. Do not work on the product during operation.Risk of FireImproper installation of the product may cause a fire.

Observe the operating instructionsRead the documentation of the product before working on it. Follow all safety precautions and instructions as described in the documentation.

General WarningsAll electrical installations must be made in accordance with the local and National Electrical Code® ANSI/NFPA 70 or the Canadian Electrical Code® CSA C22.1. This document does not and is not intended to replace any local, state, provincial, federal or national laws, regulation or codes applicable to the installation and use of the product, including without limitation applicable electrical safety codes. All installations must conform with the laws, regulations, codes and standards applicable in the jurisdiction of installation. SMA assumes no responsibility for the compliance or noncompliance with such laws or codes in connection with the installation of the product.Before installing or using the product, read all of the instructions, cautions, and warnings in this manual.Before connecting the product to the electrical utility grid, contact the local utility company. This connection must be made only by qualified personnel.Wiring of the product must be made by qualified personnel only.

SMA America, LLC Table of Contents


Table of Contents1 Information on this Document. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

1.1 Validity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.2 Target Group . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.3 Additional Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91.4 Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.5 Typographies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.6 Nomenclature. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101.7 Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2 Safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.1 Intended Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122.2 Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132.3 Personal Protective Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 162.4 Symbols on the Sunny Central Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 172.5 Labels on the Sunny Central Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.5.1 Inverter without integrated DC switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .182.5.2 Inverter with integrated DC switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

3 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223.1 Plant Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223.2 Sunny Central Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.2.1 Design of the Sunny Central Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .243.2.2 Type Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .243.2.3 Operating States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .263.2.4 Touch Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .273.2.5 Key Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .283.2.6 Integrated AC Disconnect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .293.2.7 Integrated DC Switch. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29

3.3 Sunny Central Communication Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 303.4 Remote Shutdown. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313.5 External Fast Stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 313.6 Insulation and Ground Fault Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.6.1 Operating Principles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .323.6.2 Ground Fault Monitoring in Grounded PV Arrays. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

3.6.2.1 Ground Fault Detection Interruption (GFDI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .333.6.3 Insulation Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

3.6.3.1 Insulation Monitoring Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .333.6.4 Combined Insulation and Ground Fault Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

3.6.4.1 GFDI and Insulation Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .343.6.4.2 Advanced Remote GFDI and Insulation Monitoring Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .35

3.7 Grid Management Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 373.7.1 Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373.7.2 Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373.7.3 Reactive Power Setpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373.7.4 Full and Limited Dynamic Grid Support (FRT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .373.7.5 Decoupling Protection Ramp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39

Table of Contents SMA America, LLC


3.7.6 Grid Management Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .393.7.7 Q at Night . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .40

3.8 Islanding Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413.9 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

4 Touch Display of the Inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .424.1 Touch Display Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424.2 Explanation of Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

4.2.1 Status Info Line. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .424.2.2 Information Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .434.2.3 Navigation Line . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

4.3 Selecting the Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464.4 Changing the Date, Time, and Time Zone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464.5 Selecting the Display Format . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464.6 Setting the Brightness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 464.7 Entering the Installer Password. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

5 Plant Network. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .485.1 Plant Network Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 485.2 Setting the IP Address on the Laptop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 495.3 Configuring the IP Address of the Inverter for Static Networks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 505.4 Configuring the IP Address of the Inverter for Dynamic Networks. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

6 Communication with the SC-COM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .516.1 Displaying Instantaneous Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 516.2 Changing Parameters. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 516.3 Setting the Remote Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

7 Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .527.1 Power Frequency-Dependent Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 527.2 Active Power Limitation Independent of the Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

7.2.1 Selecting the Procedure with the Parameter P-WMod. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .537.2.2 Off Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .547.2.3 WCtlCom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .547.2.4 WCnst Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .547.2.5 WCnstNom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .547.2.6 WCnstNomAnln Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

7.3 Displaying the Status of the Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 557.4 Displaying Error Messages and Warnings of Active Power Limitation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

8 Reactive Power Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .568.1 Selecting Reactive Power Control Procedure with the Parameter Q-VArMod . . . . . . . . . . . . . . . . . . . . . . . 56

8.1.1 Off Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .578.1.2 VArCtlCom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .578.1.3 PFCtlCom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .578.1.4 VArCnst Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .578.1.5 VArCnstNom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .578.1.6 VArCnstNomAnln Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .578.1.7 PFCnst Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59



8.1.8 PFCnstAnln Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .598.1.9 PFCtlW Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .608.1.10 VArCtlVol Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .618.1.11 VArCtlVolHystDb Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .61

8.2 Displaying Error Messages and Warnings for the Reactive Power Setpoint . . . . . . . . . . . . . . . . . . . . . . . . 648.3 Q at Night . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

8.3.1 Selecting the Mode with the Parameter QoDQ-VarMod . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .658.3.1.1 No Q at Night: Off Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 668.3.1.2 Q at Night with Operation Command via Modbus Protocol: WCtlCom Procedure. . . . . . . . . . . . . . . . . . . . . . 668.3.1.3 Q at Night with Absolute Value: VArCnst Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 668.3.1.4 Q at Night as a Percentage of the Nominal Power: VArCnstNom Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . 668.3.1.5 Q at Night via Standard Signal: VArCnstNomAnIn Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 668.3.1.6 Q at Night Depending on the Line Voltage: VArCtlVol Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 688.3.1.7 Measures for Voltage Support through Parameterization of Reactive Power/Voltage Characteristic Curve:

VArCtlVolHystDb Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68

9 Grid Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .729.1 How Grid Monitoring Works. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 729.2 Monitoring the Line Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 729.3 Monitoring the Power Frequency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 739.4 Measurement Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 749.5 Grid Connection after Correction of Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 759.6 Setting the Medium Voltage. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75

10 Setting the Insulation Monitoring of the PV Plant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7610.1 Setting the Insulation Monitoring of the PV Plant with Advanced Remote GFDI and an Insulation Monitoring

Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7610.1.1 Information on Insulating PV Modules Equipped with Advanced Remote GFDI and Insulation Monitoring Device

7610.1.2 Switching to Insulated Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7610.1.3 Switching to Grounded Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

11 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7711.1 Safety During Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7711.2 Reading Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77

11.2.1 Reading Error Messages via Touch Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7711.2.2 Reading Error Messages via the User Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

11.3 Acknowledging Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7811.3.1 Acknowledging the Error Messages via the Key Switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7811.3.2 Acknowledging Errors via the User Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

11.4 Error Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7811.4.1 Behavior of the Inverter under Fault Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7811.4.2 Error Numbers 01xx to 13xx - Disturbance on the Utility Grid . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8011.4.3 Error Number 34xx to 40xx ‒ Disturbance on the PV Array . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8111.4.4 Error Number 60xx to 90xx ‒ Disturbance on the inverter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .83

12 Instantaneous Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8712.1 Inverter Instantaneous Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87

12.1.1 Power Limitation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8712.1.2 Error Channels . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .87



12.1.3 Measured Values. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8712.1.4 Device-Internal Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8812.1.5 Internal Counters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8812.1.6 Service-Relevant Display Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

12.2 Sunny Central String-Monitor-US . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8912.2.1 Instantaneous Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8912.2.2 Device-Internal Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8912.2.3 Status Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .89

13 Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9013.1 Sunny Central Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90

13.1.1 Power Limitation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9013.1.2 Grid Monitoring/Grid Limits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10113.1.3 Grid Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10413.1.4 Insulation Monitoring. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10513.1.5 Device-Internal Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106

14 Contact. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10815 Revision History . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 109

SMA America, LLC 1 Information on this Document


1 Information on this DocumentThis section provides important information on how to use this document and how to work with the Sunny Central inverter. Among other things, this document specifies the Sunny Central inverters for which this document is valid and the target group for which it has been written.

1.1 ValidityThis document is valid for the following device types:

• Sunny Central 500CP-US/CA (SC 500CP-US-10)• Sunny Central 500CP-US/CA 600V (SC 500CP-US-10 600V)• Sunny Central 630CP-US/CA (SC 630CP-US-10)• Sunny Central 720CP-US/CA (SC 720CP-US-10)• Sunny Central 750CP-US/CA (SC 750CP-US-10)• Sunny Central 800CP-US/CA (SC 800CP-US-10)• Sunny Central 850CP-US/CA (SC 850CP-US-10)• Sunny Central 900CP-US/CA (SC 900CP-US-10)

The production version is indicated on the type label.The firmware version can be read out via the user interface.This document describes the operation of the inverter and troubleshooting.

1.2 Target GroupThis document is intended for qualified persons. Only qualified persons are allowed to perform the tasks described in this document.Qualified persons have received appropriate training and have demonstrated the ability and knowledge to install, operate, and perform maintenance on the device.Qualified persons have been trained in how to deal with the dangers and risks associated with installing electrical installations and possess all the necessary knowledge for averting danger.Qualified persons are aware of the obligation to wear Hazard Risk Category 2 personal protective equipment and always comply with the general safety regulations for dealing with electric voltage.

1.3 Additional InformationLinks to additional information can be found at www.SMA-Solar.com:Information Document typeInstallation requirements for Sunny Central 500CP-US / 500CP-US 600V / 630CP-US / 720CP-US / 750CP-US / 800CP-US

Technical Information

Medium-Voltage Transformers - Important Requirements for Medium-Voltage Transformers and Transformers for Auxiliary Power Supply for SUNNY CENTRAL CP-US Series Inverters Technical Information

Sunny Central Communication Controller Technical InformationSunny Main Box ‒ Connecting the DC cabling for PV inverters Technical InformationSC-COM Modbus® Interface (Modbus information including the Zone Monitoring option) Technical DescriptionQ at Night Technical Information

1 Information on this Document SMA America, LLC


1.4 Symbols

1.5 Typographies

1.6 NomenclatureThe following nomenclature is used in this document:

1.7 AbbreviationsIn this document, abbreviations are used at certain points. In the following table, you will find the full designation and an explanation, where applicable.

Symbol ExplanationInformation that is important for a specific topic or goal, but is not safety-relevant

Indicates a requirement for meeting a specific goal Desired result A problem that could occur

Typography Usage Examplebold • Display messages

• Elements on a user interface• Parameters• Connections• Slots• Elements to be selected• Elements to be entered

• Select the parameter ExlTrfErrEna and set to Off.

• Select the tab Parameters.

> • Connects several elements to be selected • Select Plant > Detect.[Button/Key] • Button or key to be selected or pressed • Select [Start detection].

Complete designation Designation in this documentSMA America Production, LLC SMASMA Solar Technology Canada Inc. SMASunny Central Communication Controller SC-COM

Abbreviation Designation ExplanationAC Alternating Current ‒DC Direct Current ‒FRT Fault Ride-Through Dynamic grid supportGFDI Ground Fault Detection Interruption ‒IP Internet Protocol ‒LED Light-Emitting Diode ‒LVRT Low-Voltage Ride-Through Limited dynamic grid supportMAC Media Access Control ‒

SMA America, LLC 1 Information on this Document


MPP Maximum Power Point ‒MSL Mean Sea Level ‒OF Optical Fiber ‒PE Protective Earth Protective conductorPV Photovoltaics ‒

Abbreviation Designation Explanation

2 Safety SMA America, LLC


2 SafetyIn this section, you will find general safety precautions which you must observe whenever working on the Sunny Central inverter. Pay special attention to these sections to avoid personal injury and property damage.

2.1 Intended UseThe Sunny Central CP-US is a PV inverter which converts the direct current generated in the PV modules into grid-compliant alternating current. An external MV transformer fitted downstream feeds the alternating current generated into the utility grid. The inverter is suitable for both indoor and outdoor installation. The inverter is only licensed for use with a suitable transformer and providing that the maximum permissible DC input voltage and the permitted ambient conditions are complied with. The transformer must be designed for voltages that arise during pulsed mode of the inverter.The inverter has been evaluated by UL for compliance with UL 1741 / IEEE 1547 requirements at the inverter terminals on the local area side of an interconnection transformer for all IEEE 1547 tests other than for Unintentional Islanding. It has additionally been evaluated for selected tests for use with UL Recognized Component low-voltage transformers as noted in the table below:

The inverter has not been evaluated for exporting current into a low-voltage electrical power system (EPS) with local loads present, and must connect to the medium-voltage EPS via an externally-provided medium-voltage transformer.The external transformer shall provide isolated primary and secondary windings rated for the output voltage and kVA rating of the inverter. The transformer shall be located between the output of the inverter and the medium-voltage utility power connection.The Authority Having Jurisdiction (AHJ) must consider the effect of the transformer provided in the field with respect to electrical ratings, impedance, and the resultant effects on the utility interconnection performance of the inverter, with respect to the ratings and impedance of the transformer selected.The inverter has not been evaluated for an installation of multiple inverters connected to one transformer. The Authority Having Jurisdiction shall determine if any additional evaluation is necessary of such a system.The inverter can have as an option an AC power switch for "branch circuit protection". This AC circuit breaker simultaneously acts as the AC Disconnect in accordance with NEC ANSI/NFPA 70 and CEC. For inverters without an AC circuit breaker, "branch circuit protection" and an AC Disconnect must be implemented by the installer. Further information is provided in Section 3.1.The inverter with an integrated AC Disconnect can be optionally ordered with an integrated DC Switch in order to be able to disconnect the inverter from the PV array. Both devices are designed to be used with a lockout device to secure the inverter against reconnection during service. If the inverter does not have an integrated DC Switch, an external DC Disconnect must be installed in accordance with NEC ANSI/NFPA 70 and CEC, in order to be able to disconnect the inverter from the PV array.

Test Manufacturer Model Electrical RatingsUnintentional Islanding Test J. Schneider DLGX

1000F-1016TO1001Primary 289 V Secondary 480 V, 1,000 kVA

Synchronization, Harmonics, and Open Phase

J. Schneider DLGX 1250F-1001TO1001

Primary 480 V / 1,500 A Secondary 480 V / 1,500 A, 1,250 kVA

If the unit is not provided with a GFDI or insulation monitoring device, this inverter must be used with an external GFDI as required by the Article 690 of the National Electrical Code® for the installation location or an external insulation monitoring device according to UL 1741.

SMA America, LLC 2 Safety


The models SC 850CP-US and SC 900CP-US are only provided with transfer trip functionality to meet unintentional islanding requirements. An external signal is required from the utility (EPS) to cause the inverter to cease-to-energize the EPS during an island condition. Both inverters have also been tested for automatic unintentional islanding performance (IEEE 1547.1 chapter 5.7, "Unintentional Islanding") up to 880 kVA AC power.The outdoor version of the inverter corresponds to UL 1741 "Type 3R" and can also be operated in rain, sleet, and snow.The indoor version corresponds to UL 1741 "Type 1" and is only licensed for installation in electrical equipment rooms.Only persons fulfilling all of the skills for the target group may work on or with the inverter.Intended use also includes reading the product documentation and observing all safety precautions.All work on the inverter must be performed using appropriate tools and in compliance with the ESD protection regulations.NFPA 70B Table 130.7(C)(16) Hazard Risk Category 2 personal protective equipment is to be worn by all persons working on or with the inverter.Unauthorized persons may not operate the inverter and must keep at a distance from the inverter.No reconstruction, modification or installation of additional components may be carried out on the inverter without the express consent of SMA America, LLC.The inverter must not be operated with its doors open.The inverter must not be opened when it is raining or when humidity exceeds 95%.The inverter must not be operated with any technical defects.For safety reasons, it is forbidden to modify the product or install components that are not explicitly recommended or distributed by SMA.Only use the inverter in accordance with the information provided in the enclosed documentation. Any other application may cause personal injury or property damage.The enclosed documentation is an integral part of this product.

• Read and observe the documentation.• Keep the documentation in a convenient place for future reference.

2.2 Safety PrecautionsThis section contains safety precautions that must be observed at all times when working on or with the product. To prevent personal injury or property damage and to ensure long-term operation of the product, read this section carefully and follow all safety precautions at all times.



Danger to life from electric shock due to live voltageHigh voltages are present in the live components of the inverter. Touching live components results in death or serious injury due to electric shock.

• When working in a high contact-risk environment, wear Hazard Risk Category 2 personal protective equipment.• Do not touch live components.• Follow the instructions precisely.• Observe all safety messages on the product and in the documentation.• Observe all safety precautions of the module manufacturer.• Before any work on the inverter is performed, always disconnect the following components from voltage sources

if live voltage is not absolutely necessary:– Line voltage for grid feed-in– Internal power supply– DC voltage from the PV array– Additional external voltages, e.g. control signals of a control room

• Ensure that no disconnected devices can be reconnected.• After disconnecting the inverter from voltage sources, wait at least 15 minutes for the capacitors of the inverter to

discharge completely.• Always check that no voltage is present in any of the components before working on the inverter.• Ground and short-circuit the device.• Cover or safeguard any adjacent live components.

Danger to life from electric shock due to live DC cablesDC cables connected to PV modules that are exposed to sunlight are live. Touching live components results in death or serious injury.

• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.• Prior to connecting the DC cables, ensure that the DC cables are voltage-free.

Danger to life from electric shock due to ground faultIf a ground fault has occurred, parts of the plant that are supposedly grounded may in fact be live. Touching incorrectly grounded components can result in death or very serious injuries from electric shock.

• Ensure that no voltage is present before touching any components of the PV plant.• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.

Danger to life from electric shock when entering the PV fieldGround fault monitoring with GFDI and Advanced Remote GFDI does not provide protection from injury when GFDI is activated. PV modules grounded by GFDI discharge voltage to ground. Entering the PV field may lead to lethal electric shocks.

• Before entering the PV field, switch the PV array to insulated operation.• Ensure that the insulation resistance of the PV array is greater than 1 k Ω .



Danger to life from electric shock if the inverter is damagedOperating a damaged inverter can lead to hazardous situations that result in death or serious injuries due to electric shock.

• Only use the inverter when it is technically faultless and in an operationally safe state.• Regularly check the inverter for visible damage.• Make sure that all external safety equipment is freely accessible at all times.• Make sure that all safety equipment is in good working order.• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.

Danger to life from electric shock even if the inverter is disconnected on the AC and DC sidesThe precharge unit of the option "Q at Night" is also live if the AC contactor and the DC switch are open. Touching live components of this assembly will result in death or serious injury.

• Do not touch live components.• Do not remove protective covers.• Observe the warning messages.• Wear Hazard Risk Category 2 personal protective equipment.

Danger to life from electric shock when the inverter is not lockedIf the inverter is not locked, this means that unauthorized persons have access to components carrying lethal voltages. Touching live components may result in death or serious injury due to electric shock.

• Always close and lock the inverter.• Remove the keys from the door locks and from the key switch.• Keep the keys in a safe place.• Ensure that unauthorized persons have no access to the PV plant.

Danger to life due to blocked escape routesIn hazardous situations, blocked escape routes can lead to death or serious injury. Opening the doors of two inverters located opposite each other blocks the escape route. It is imperative that the escape route is freely accessible at all times.

• An escape route of at least 3 ft. (915 mm) width must be available at all times. Make sure the minimum passage width of the route meets local standards.

• Do not place any objects in the escape route path.• Remove all tripping hazards from the escape routes.• If two inverters have been installed facing each other, never open the doors of both inverters simultaneously.

Risk of fire due to failure to observe torque specifications on live screw connectionsFailure to follow the specified torques reduces the ampacity of the live screw connections so that the contact resistances increase. This can cause components to overheat and catch fire.

• Ensure that live screw connections are always executed with the exact torques specified in this document.• Use suitable tools when working on the device.• Avoid repeated tightening of live screw connections, as this may result in inadmissibly high torques.



2.3 Personal Protective EquipmentAlways wear the personal protective equipment recommended by SMA America, LLC when working on the inverter. All clothing should be in accordance with NFPA 70E Section 130.7. Appropriate Insulated gloves for shock protection in accordance with NFPA 70E Section 130.7(C), rated at least 1000V shall be worn as required. Any other prescribed protective equipment must also be used. When carrying out work on live parts of the inverter, protective equipment of at least Hazard Risk Category 2 is required in accordance with NEMA NFPA 70E, Table 130.7(C)(16).

Risk of burns due to hot componentsSome components of the inverter can become very hot during operation. Touching these components can result in burn injuries.

• Observe safety messages on the components.• During operation, do not touch any components marked with such messages.• After disconnecting the plant from voltage sources, wait until any hot components have cooled down sufficiently.• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.

Damage to the components due to dust or moisture penetrationDust intrusion or moisture penetration can damage the inverter or impair its functionality.

• Do not open the inverter during rainfall or humidity of more than 95%.• Only maintain the inverter when the environment is dry and free of dust.• Do not operate the inverter while the door is open.• If present, connect the external supply voltage after having set up and installed the inverter.• Switch on the circuit breaker of the external supply voltage as well as the circuit breakers of the 24 V circuits.

This will activate the heating and interior fans, which will then switch on automatically.• Mount all panels of the inverter when interrupting the installation process or commissioning.• Close and lock the inverter.

Damage to electronic components due to electrostatic dischargeElectrostatic discharge can damage or destroy electronic components.

• Observe the ESD safety regulations when working on the device.• Wear Hazard Risk Category 2 personal protective equipment for all work on the devices.• Discharge electrostatic charge by touching uncoated, grounded enclosure parts, e.g. at the PE connection on the

doors. Only then is it safe to touch any electronic components.

Hazard Risk Category 2 protective equipment requiredIn accordance to NFPA 70E, an arc flash hazard risk analysis has been performed by SMA, and appropriate Arc Flash Hazard labels stating the required Personal Protective Equipment (PPE) for exposed, energized interaction with the equipment, are installed. Hazard Risk Category 2 PPE is the requirement for all routine maintenance, diagnostics, and commissioning activities as described in the SMA protocols. Areas within the machine also exist that cannot, under any circumstances, be exposed while energized. For additional information, please contact the SMA Service Line.



2.4 Symbols on the Sunny Central InverterSymbol Explanation

DC currentEarth Ground

AC currentOn position of the AC Disconnect

Off position of the AC Disconnect



2.5 Labels on the Sunny Central InverterThis section describes the positions of the labels on the inverter. The warning labels identify potentially hazardous areas or components. Familiarize yourself with the warning labels and their positions before beginning work on the inverter.

2.5.1 Inverter without integrated DC switch

Figure 1: Safety messages on the inverter

Position SMA order number DescriptionA 86-0043464 Warning label general SC-US EN

86-430042 Warning label Arc Flash Hazard ProtectionB 86-00480030 Only with order option AC Disconnect: Photovoltaic System AC

DisconnectC 86-00480020 Warning label Arc Flash



D 86-0043474 Warning label SC-US external transformer ENE 86-004300 Warning label, Burn Hazard, Hot surfaceF 86-0043472 Only for order option DC fuses: Warning label SC-US DC fuses

EN/ES86-0043473 Only for order option DC fuses: Warning label SC-US DC fuses

EN/FRG ‒ Type labelH ‒ Label control supply voltageI 86-10867027 For positive grounding: 1,000 V PV‒

86-430045 For positive grounding: 600 V PV‒*86-10867028 For negative grounding: 1,000 V PV+86-430044 For negative grounding: 600 V PV+*

Q 86-0043462 ABC 60 Hz86-101300.1 ABC 50 Hz

L 86-0043470 Warning label SC-US Conductors, EN-FR86-0043469 Warning label SC-US Conductors, EN-ES

M 86-0043460 Grounding Electrode TerminalN 86-10867027 For negative grounding or insulated: 1,000 V PV‒

86-430045 For negative grounding or insulated: 600 V PV‒*86-10867028 For positive grounding or insulated: 1,000 V PV+86-430044 For positive grounding or insulated: 600 V PV+*

O 86-108680046 Warning label SC US capacitors C1-C3, C6 optional EN/FR86-108680047 Warning label SC US capacitors C1-C3, C6 optional EN/ES

P 86-0043476 Warning label, SC US stack capacitors EN/ES86-0043477 Warning label, SC US stack capacitors EN/FR

* For Sunny Central 500CP-US 600V

Replacing warning labelsMissing or damaged warning labels must be replaced. The warning labels can be ordered from SMA using the SMA order numbers listed above.

Position SMA order number Description



2.5.2 Inverter with integrated DC switch

Figure 2: Warning labels on the Sunny Central inverter

Position SMA order number DescriptionA 86-0043464 Warning label general SC-US EN

86-430042 Warning label Arc Flash Hazard ProtectionB 86-0033325 Label "Closed"C 86-00480030 Label "Photovoltaic System AC Disconnect"D 86-101400.1 Label "DC Switch"E 86-0033324 Label "Open"F 86-00480020 Warning label Arc FlashG 86-0043474 Warning label SC-US external transformer ENH 86-0033326 Warning label Electric Shock due to Live Voltage EN/ES

86-0033327 Warning label Electric Shock due to Live Voltage EN/FR



I 86-004300 Warning label, Burn Hazard, Hot surfaceK 86-0043472 Only for order option DC fuses:

Warning label SC-US DC fuses EN/ES86-0043473 Only for order option DC fuses:

Warning label SC-US DC fuses EN/FRL 86-0033321 Warning label Electric Shock Hazard EN/FR

86-0033322 Warning label Electric Shock Hazard EN/ESM 86-0033329 Warning label Danger: Do not pull out fuses under load EN/FR

86-0033328 Warning label Danger: Do not pull out fuses under load EN/ESN ‒ Type labelO ‒ Label control supply voltageP 86-10867027 For positive grounding: 1,000 V PV‒

86-430045 For positive grounding: 600 V PV‒*86-10867028 For negative grounding: 1,000 V PV+86-430044 For negative grounding: 600 V PV+*

Q 86-0043462 ABC 60 Hz86-101300.1 ABC 50 Hz

R 86-0043470 Warning label SC-US conductors, EN-FR86-0043469 Warning label SC-US conductors, EN-ES

S 86-0043460 Grounding electrode terminalT 86-10867027 For negative grounding or insulated: 1,000 V PV‒

86-430045 For negative grounding or insulated: 600 V PV‒*86-10867028 For positive grounding or insulated: 1,000 V PV+86-430044 For positive grounding or insulated: 600 V PV+*

U 86-108680046 Warning label SC US capacitors C1-C3, C6 optional EN/FR86-108680047 Warning label SC US capacitors C1-C3, C6 optional EN/ES

V 86-0043476 Warning label, SC US stack capacitors EN/ES86-0043477 Warning label, SC US stack capacitors EN/FR

* For Sunny Central 500CP-US 600V

Replacing Warning LabelsReplace missing or damaged warning labels. The warning labels can be ordered from SMA using the SMA order numbers listed above.

Position SMA order number Description

3 Product Description SMA America, LLC


3 Product DescriptionThis section will give you an overview of the inverter and its components.

3.1 Plant OverviewThe Sunny Central CP-US is a PV inverter which converts the direct current generated in the PV modules into grid-compliant alternating current. An external MV transformer fitted downstream feeds the alternating current generated into the utility grid.An AC Disconnect and DC Disconnect must be installed in accordance with NEC ANSI/NFPA 70 and CEC.The inverter can be optionally ordered with an integrated AC Disconnect and an integrated DC Switch. Both devices are designed to be used with a lockout device to secure the inverter against reconnection during service. With the AC Disconnect, the inverter can be disconnected from the utility grid simply and safely. This option does not require an additional AC Disconnect Unit on the AC side.With the DC Switch, the inverter can be disconnected from the PV array. If the inverter does not have an integrated DC Switch, an external DC Disconnect must be installed in accordance with NEC ANSI/NFPA 70 and CEC, in order to be able to disconnect the inverter from the PV array. This allows you to easily and safely disconnect the inverter as needed. In some jurisdictions, additional external disconnecting means may be required for servicing of the DC input fuses. SMA recommends an early review with the AHJ to identify their requirements for the PV System.

Sunny Central Inverter with Integrated AC Disconnect and Integrated DC Switch

Figure 3: Principle of a grid-connected PV plant with a Sunny Central inverter with integrated AC Disconnect and DC Switch

Position DescriptionA PV arrayB String-Combiner BoxC Inverter with integrated AC Disconnect and DC SwitchD External transformerE Utility grid

SMA America, LLC 3 Product Description


Sunny Central Inverter with Integrated AC Disconnect and external DC Disconnect

Figure 4: Principle of a grid-connected PV plant with an external DC Disconnect and a Sunny Central inverter with integrated AC Disconnect

Sunny Central Inverter with External AC Disconnect and External DC SwitchAs an option, the AC circuit breaker can be mounted externally.

Figure 5: Principle of a grid-connected PV plant with a Sunny Central inverter and external AC / DC Disconnect Unit

Position DescriptionA PV arrayB String-Combiner BoxC Inverter with integrated AC DisconnectD DC Disconnect UnitE External transformerF Utility grid

Circuit breakerThe unit is provided with a UL listed circuit breaker on the output rated 1,600 A for branch circuit protection. If the circuit breaker shall be located externally to secure the AC path, you have to use the same type of circuit breaker (ABB Emax E2B-A with 42 kA rated short-circuit current, ABB Emax E2N-A with 65 kA rated short-circuit current or ABB Emax E2H-A with 85 kA rated short-circuit current and 1,600 A continuous current rating each).

Position DescriptionA PV array



3.2 Sunny Central Inverter3.2.1 Design of the Sunny Central Inverter

Figure 6: Sunny Central Inverter (example)

3.2.2 Type LabelYou can identify the inverter by the type label. Type labels are attached at the top right on the inside of the interface cabinet and on the top left side of the inverter cabinet. You will find the following information on the type label:

• Device type• Serial number• Production version

B String-Combiner BoxC Inverter without Integrated AC Disconnect and without integrated DC SwitchD AC / DC Disconnect UnitE External transformerF Utility grid

Position DescriptionA Inverter cabinetB Interface cabinetC Touch displayD Key switchE Service interfaceF Integrated AC Disconnect*

* depending on the option ordered

G Integrated DC Switch*

Position Description



• Production date• Device-specific data

Symbols on the Type Label

Reading the serial numberYou can read the serial number without opening the inverter. The serial number can be found on the roof of the inverter at the top left. You can also read the serial number from the display.

Reading the firmware versionYou can read the version number of the firmware from the inverter and the display via the user interface of the SC-COM or on the display.

Symbol Description ExplanationDanger to life due to high voltages

The product operates at high voltages. All work on the product must be carried out by qualified persons only.

Risk of burns due to hot surfaces The product can become hot during operation. Avoid contact during operation. Allow the product to cool down sufficiently before carrying out any work. Wear personal protective equipment such as safety gloves.

Observe the documentation. Observe all documentation that is supplied with the product.

Evaluated to the requirements of the Underwriters Laboratories Standard for Safety for Inverters, Converters, Controllers and Interconnection System Equipment for Use With Distributed Energy Resources, UL 1741.The inverter has been additionally evaluated by Underwriters Laboratories to CAN/CSA C22.2 No. 107.1-1, "General Use Power Supplies".



3.2.3 Operating StatesThe inverter cycles through various states during operation:

Figure 7: Principle overview of the operating states of the inverter

Designation DescriptionStop The inverter is switched off. Stop or Remote shutdown active appears in the touch

display.If the key switch is set to Start, the inverter switches to the "Grid monitoring" operating state.



3.2.4 Touch DisplayDifferent kinds of inverter data can be viewed on the touch display. Settings such as language, time and brightness can be set, but inverter parameters cannot be set from the touch display.The display area is activated by touching the touch display. Tapping the symbols on the touch display activates the corresponding functions. If the touch display is not touched for five minutes, it will shut off.

Grid monitoring The inverter is in the "Grid monitoring" operating state. Waiting for valid AC grid appears in the touch display.The grid limits will be monitored continuously from now on. If a grid fault does not occur during the grid monitoring time, the AC contactor closes and the inverter switches to the "Grid monitoring time reached" operating state.If the grid limits are exceeded during the monitoring time, the inverter will restart "Grid monitoring".With the option "Q at Night", the inverter switches to the "Q at Night" operating state if the time specified in the parameter PvStrT has elapsed and the start voltage PvVtgStrLevMin has not been reached (see Section 8.3 "Q at Night", page 65).

Grid monitoring time reached

The inverter is in the "Grid monitoring time reached" operating state. Waiting for PV voltage or Waiting for electric utility company appears on the touch display.If the input voltage VPV exceeds the start voltage PvVtgStrLevMin, the inverter waits until the time specified in the PvStrT parameter elapses. If the input voltage VPV does not fall below the start voltage PvVtgStrLevMin during this time, the inverter checks whether the utility grid is available. If a valid utility grid is available, the inverter switches to the operating state "Startup".The start voltage PvVtgStrLevMin must be adjusted to conform with the PV array connected to the inverter.

Startup The inverter is in the "Startup" operating state. Operation appears in the touch display.The inverter moves to its initial operating point and begins the grid feed-in process.

MPP load operation In the MPP operating state, the inverter feeds power into the utility grid and operates permanently at the maximum power point (MPP). Operation and the rate of power feed-in are shown in the touch display.If the measured power PPV during the time interval PvPwrMinT is less than the minimum feed-in voltage PvPwrMin or the key switch is set to Stop, the inverter switches to the "Shutdown" operating state.With the order option "Q at Night", the inverter switches to the operating state "Q at Night" if the measured power PPV during the time interval PvPwrMinT is less than the minimum feed-in power PvPwrMin (see Section 8.3 "Q at Night", page 65).

Shutdown The inverter is in the "Shutdown" operating state. Operation appears in the touch display.If the key switch is set to Stop, the inverter switches to the "Stop" operating state. The AC contactor and the DC switching device open automatically.If the inverter shuts down because the feed-in conditions are no longer met, the inverter switches to the "Grid monitoring" operating state.

Fault If a disturbance occurs during operation, the inverter switches off and displays Fault and the disturbance in the touch display (see Section 11 "Troubleshooting", page 77).

Designation Description



3.2.5 Key SwitchThe key switch is used to switch the inverter on and off.

Switch position "Start"If the key switch is turned to Start, a motor drive automatically switches on the DC switching device and the inverter switches from the operating state "Stop" to the operating state "Grid monitoring". If there is sufficient irradiation and a valid utility grid connection, the inverter switches to feed-in operation. If there is insufficient irradiation and the input voltage is therefore too low, the inverter remains in the operating state "Grid monitoring".With the "Q at Night" order option, the inverter supports the utility grid with reactive power if the input voltage is insufficient.

Switch position "Stop"If the key switch is turned to Stop while the inverter is in the operating state "Grid monitoring", a motor drive automatically switches off the DC switching device. The inverter switches to the operating state "Stop".If the key switch is turned to Stop when the inverter is in the operating state "MPP load operation", the inverter switches to the operating state "Shutdown". Once the shutdown is complete, the AC contactor and the DC switching device are switched off automatically and the inverter switches to the operating state "Stop".



3.2.6 Integrated AC DisconnectDepending on the option ordered, the Sunny Central CP-US inverter may be fitted with an integrated AC Disconnect. The AC Disconnect enables you to disconnect the inverter from the AC grid in the event an emergency and for service and maintenance work.

Figure 8: AC Disconnect

3.2.7 Integrated DC SwitchDepending on the option ordered, the Sunny Central CP-US inverter may be fitted with an integrated DC Switch. The DC Switch enables you to disconnect the inverter from the PV array in the event an emergency and for service and maintenance work. Despite disconnecting the integrated DC Switch, voltages are still present on the DC fuses and the inverter busbars. Touching the DC fuses or the busbars will result in death or very serious injuries from electric shock.

Figure 9: Integrated DC Switch

Position DescriptionA OFF buttonB ON buttonC Spring status indicatorD Position indicator

Position DescriptionA Green light repeater

The DC Switch is closed.B DC switch



3.3 Sunny Central Communication ControllerThe Sunny Central Communication Controller (SC-COM) is the central communication interface of the inverter. The SC-COM establishes the connection between the inverter and the operator.

Figure 10: SC-COM

The SC-COM collects all data from the connected devices. The SC-COM enables monitoring, parameterization and remote diagnosis of the inverter via computer, as well as power control by the grid operator.These various tasks performed by the SC-COM can be organized in two separate networks:

• Monitoring networkThis network is used for monitoring, parameterization and remote diagnosis.

• Control networkThis network is used by the Power Plant Controller to specifications issued by the grid operator relating to grid management services to the inverter. The control network is used exclusively for grid management services which are thus transmitted and implemented within a specified time period.If only a low bandwidth is required for monitoring the PV plant, the network operator instructions can also be transmitted via the monitoring network. In this case, only one network is necessary.

The SC-COM makes all data collected available to the operator via an Ethernet connection.Copper cables or optical fibers can be used for the networks.

C Red light repeaterThe DC Switch is open.

Position DescriptionA SC-COM

Type of communication of the PV plantThe interface of the SC-COM is set by default to COM3 and the baud rate to 115,200. Do not modify these settings.

Position Description



3.4 Remote ShutdownBy means of remote shutdown, you can selectively shut down and switch off the inverter within approximately six seconds, from a control room for example. The function of the remote shutdown is similar to the stop position of the key switch. If the remote shutdown function is activated from the control room whilst the inverter is in the operating state "Grid monitoring", a motor drive automatically shuts off the DC main switch and the inverter switches to the operating state "Stop".If the remote shutdown function is activated from the control room while the inverter is in the "MPP load operation" operating state, the inverter switches to the operating state "Shutdown". Once shutdown is complete, the AC contactor and the DC main switch are switched off automatically and the inverter goes into the operating state "Stop".The design of the remote shutdown is wire-break safe. If 24 V is present in the remote shutdown, the inverter continues to operate in the current operating state. If the remote shutdown function is triggered or if a wire-break occurs, 0 V is present in the remote shutdown and the inverter switches from its current operating state to the operating state "Stop".In order to be able to use the remote shutdown, the parameter ExlStrStpEna must be set to On.

3.5 External Fast StopThe external fast stop is to be used if the inverter is to be disconnected via an external signal in accordance with IEEE 1547 (e.g. External Unintentional Islanding Detection). The inverter comes equipped with a fast stop input. An external switch that is switched via a 24 V signal can be connected to this fast stop input.The external fast stop disconnects the inverter from the utility grid in less than 100 ms.The inverter is delivered with open terminals. The following options are available for configuring the external fast stop:

• The external fast stop deactivated:The terminals of the active fast stop are bridged. The fast stop function is thus deactivated. Bridging of the terminals must be performed as necessary.

• The external fast stop is operating with an external 24 V voltage supply.An external latching switch (break contact) is connected to the inverter terminals via an external 24 V voltage supply. When the switch is closed, the all-or-nothing relay is activated and the inverter feeds into the grid. If the fast stop is tripped, the switch opens and the relay is deactivated. The inverter is stopped and no longer feeds energy into the grid.Voltage ranges for the relay:– 24 V to 30 V: The inverter is in operation.– 0 V to 4 V: The inverter is not in operation.

The models SC 850CP-US and SC 900CP-US are only provided with transfer trip functionality to meet unintentional islanding requirements. An external signal is required to utilize this feature.

Tripping of the fast stop functionThe fast stop function should only be tripped in the event of immediate danger. Tripping the fast stop will not rapidly discharge the capacitors. If the inverter is to be switched off and correctly shut down via an external signal, use the input of the remote shutdown function.



3.6 Insulation and Ground Fault MonitoringTypes of insulation and ground fault monitoring are described in this section. The type of inverter insulation and ground fault monitoring depends on the order option.

3.6.1 Operating PrinciplesThe insulation and ground fault monitoring ensures plant protection. The type of monitoring depends on whether the PV array is grounded or not.

In grounded PV arrays:The ground fault monitoring is implemented by means of a residual-current monitoring device. If a ground fault occurs, the residual currents will be detected and interrupted.

• Ground fault on the ungrounded terminalIf a ground fault occurs on the ungrounded pole of the PV array, the normally ungrounded pole of the PV array is grounded non-specifically by the ground fault and a residual current flows to the grounded pole. This residual current flows through the ground fault monitoring device, e.g. the GFDI, and triggers it.

• Ground fault on the grounded terminalThe GFDI is bypassed when a ground fault occurs on the grounded terminal of the PV array. The ground fault on the grounded terminal cannot be reliably detected. A ground fault that occurs unnoticed on the grounded terminal poses a safety risk. An additional ground fault on the ungrounded terminal leads to higher residual currents that cannot be interrupted by the ground fault monitoring unit.

In ungrounded PV arrays:An insulation monitoring device constantly determines the insulation resistance using an active measurement procedure. As soon as the insulation resistance falls below the warning threshold specified in the insulation monitoring device, an insulation warning will be given on the touch display. This allows preventative measures to be taken before faults occur such as risk of injury to personnel due to leakage currents or plant failure. If the insulation resistance falls below the set warning limiting value, the plant can switch off. The parameter IsoErrIgn can be used to activate or deactivate the disconnection process under fault conditions.

Insulation check of the PV array using an insulation monitoring deviceIn order to ensure the residual current monitoring function in grounded systems, the PV array insulation must be checked at regular intervals. It is therefore recommended to use an additional insulation monitoring device in grounded systems. This will allow the insulation to be checked at regular intervals.



3.6.2 Ground Fault Monitoring in Grounded PV Arrays3.6.2.1 Ground Fault Detection Interruption (GFDI)Depending on the configuration, ground fault monitoring in the inverter is carried out via ground fault detection interruption (GFDI). This process is used to ground one pole of the PV array via the GFDI.GFDI is performed via a high-performance k-type circuit-breaker with adjustable operating current. The GFDI is integrated in the inverter and connected between an input busbar and the grounding busbar.

Figure 11: GFDI in the inverter

3.6.3 Insulation Monitoring3.6.3.1 Insulation Monitoring DeviceDepending on the configuration, an insulation monitoring device monitors the insulation resistance of the PV plant in ungrounded utility grids.In the operating state "MPP load operation", the insulation resistance of the entire system, from the PV modules to the medium-voltage transformer, will be measured.If the inverter is in the "Grid monitoring" operating state, only the insulation resistance from the PV modules to the inverter is measured.

Figure 12: Insulation monitoring device in the inverter

Position DescriptionA GFDI



A measuring circuit and a relay with a change-over contact are integrated in the insulation monitoring device.The insulation monitoring device is connected between the PV voltage and the PE protective conductor.The contacts of the relay are routed to the customer connecting terminal plate and can be used by the customer to trip a signal light or horn. The characteristics of the relay are indicated in the circuit diagram.If the insulation resistance falls below the warning threshold specified in the RisoCtlWarn parameter, the measuring circuit closes and the LED ALARM1 on the insulation monitoring device lights up. The error message 3601‒ Warning insulation error is generated by the inverter. Simultaneously, the insulation monitoring device activates the relay with changeover contact. This relay is installed in the inverter. If the insulation resistance falls below the error threshold (1 kΩ), an insulation error has occurred and the LEDs ALARM1 and ALARM2 on the insulation monitoring device light up. In this case, the operating behavior of the inverter can be set via parameters:

• If the parameter IsoErrIgn is set to Off, the measuring circuit issues a disturbance when the insulation resistance falls below the error threshold, the inverter switches off and issues the error message 3501 - Insulation error. The LEDs ALARM1 and ALARM2 are glowing.

• If the parameter IsoErrIgn is set to On, the error message from the measuring circuit is ignored when the insulation resistance falls below the error threshold. The inverter continues to feed into the grid and generates the error message 3504 ‒ Insulation error ignored.

• If the parameter IsoErrIgn is set to Run and the insulation resistance falls below the error threshold, the error message from the measuring circuit will only be ignored if the inverter is in feed-in operation. In feed-in operation, the inverter continues to feed in and issues the error message 3504 ‒ Insulation error ignored. If the insulation resistance falls below the error threshold in another operating state, the error is not ignored and the inverter does not go into feed-in operation. The error message 3501 ‒ Insulation error appears on the touch display. The LEDs ALARM1 and ALARM2 are glowing.

Type of insulation monitoring device usedThe insulation monitoring device used is the A-ISOMETER iso-PV1685 device supplied by Bender GmbH & Co. KG.

3.6.4 Combined Insulation and Ground Fault Monitoring3.6.4.1 GFDI and Insulation MonitoringWith the "GFDI and Insulation Monitoring" order option, it is possible to temporarily disable the PV array grounding and to check the insulation via the integrated insulation monitoring device.When the GFDI is closed, the PV array is grounded In this state, the insulation resistance cannot be determined.If the GFDI is open, the grounding connection is disabled. In this state, the insulation monitoring device continuously measures the insulation resistance. In the operating state "MPP load operation", the insulation resistance of the entire system, from the PV modules to the medium-voltage transformer, will be measured. If the inverter is in the operating state "Grid monitoring", only the insulation resistance of the PV modules up to the inverter will be measured.Insulation monitoring should be performed in the operating state "MPP load operation" This ensures that all parts of the plant are included in the insulation measurement.The parameter for insulation monitoring allows you to configure how an error message in the insulation monitoring device will affect the operating behavior of the inverter:

• If the parameter IsoErrIgn is set to Off, the measuring circuit issues a disturbance when the insulation resistance falls below the error threshold, the inverter switches off and issues the error message 3501 - Insulation error. The LEDs ALARM1 and ALARM2 are glowing.

• If the parameter IsoErrIgn is set to On, the error message from the measuring circuit is ignored when the insulation resistance falls below the error threshold. The inverter continues to feed into the grid and generates the error message 3504 ‒ Insulation error ignored.

• If the parameter IsoErrIgn is set to Run and the insulation resistance falls below the error threshold, the error message from the measuring circuit will only be ignored if the inverter is in feed-in operation. In feed-in operation, the inverter continues to feed in and issues the error message 3504 ‒ Insulation error ignored. If the insulation



resistance falls below the error threshold in another operating state, the error is not ignored and the inverter does not go into feed-in operation. The error message 3501 ‒ Insulation error appears on the touch display. The LEDs ALARM1 and ALARM2 are glowing.

Insulation monitoringThe insulation monitoring device will start measuring once the GFDI is open. The device will initially assume that the insulation is poor. If the parameter IsoErrIgn is set to Off, the inverter will switch off temporarily.After approximately five minutes, the insulation monitoring device will have determined the correct insulation resistance and the value of the insulation resistance can be viewed on the display of the insulation monitoring device. If the insulation is intact, the inverter switches back to the operating state "MPP load operation". If the insulation monitoring process is complete, the GFDI should be closed again and thus allow the PV array to operate with a grounded connection.If, after approximately five minutes, one of the errors 3501 ‒ Insulation Failure, 3504 ‒ Insulation failure ignored, or 3601 ‒ Warning insulation failure is displayed, then the insulation is defective. In this case, an electrically qualified person needs to check and, if necessary, repair the insulation and then acknowledge the error.Type of insulation monitoring device usedThe insulation monitoring device used is the A-ISOMETER iso-PV1685 device supplied by Bender GmbH & Co. KG.

3.6.4.2 Advanced Remote GFDI and Insulation Monitoring DeviceWith the "Advanced Remote GFDI and Insulation Monitoring US" order option, it is possible to temporarily disable the PV array grounding and to check the insulation via the integrated insulation monitoring device.

Figure 13: Advanced Remote GFDI in the inverterWhen the remote GFDI is closed, the PV array is grounded. In this state, the insulation resistance cannot be determined.The Advanced Remote GFDI opens in the event of:

• Disturbance, e.g. ground faults• Manual activation of the plant maintenance• Automatic plant maintenance

Each switching process of the Advanced Remote GFDI is counted in the CntGfdiSw instantaneous value.

DisturbanceIf a ground fault occurs, the inverter opens the Advanced and stops the feed-in operation. The AC and DC switching devices are opened. The inverter displays the error 3502 - Ground Fault Detected. After a waiting time of approximately 15 minutes has expired, the insulation monitoring is activated.You must close the Advanced Remote GFDI manually via the parameter RemMntSvc or the key switch(see Section 10.1.3, page 76). To be able to do this, all errors must be confirmed.



If an insulation error has been detected, the Advanced Remote GFDI cannot be closed via the parameter RemMntSvc. In this case, a qualified person needs to check and, if necessary, repair the insulation and then acknowledge the error.

Manual activation of the plant maintenanceManual plant maintenance can be activated via the parameter RemMntSvc (see Section 10.1.2, page 76). If the manual plant maintenance is activated, the inverter opens the Advanced Remote GFDI and the AC switching device. The DC switching device remains closed. The inverter displays the warning 3517 ‒ Isolated mode, isolation detection. After a waiting time of approximately 15 minutes has expired, the insulation monitoring is activated.Manual plant maintenance can be ended via the parameter RemMntSvc (see Section 10.1.3, page 76).

Automatic plant maintenanceDepending on the configuration option, automatic plant maintenance is activated. In this case the inverter performs an automatic insulation measurement in the morning before switching to feed-in operation.If in the morning the voltage of the PV array exceeds the value set in the parameter PvVtgRisoStart, automatic plant monitoring begins.If the automatic plant maintenance is activated, the inverter opens the Advanced Remote GFDI. The AC switching device is opened and remains open until completion of the plant maintenance. The DC switching device remains closed. The inverter displays the warning 3517 ‒ Isolated mode, isolation detection. After a waiting time of approximately 15 minutes has expired, the insulation monitoring is activated.If there is no insulation error present, the automatic plant maintenance can be interrupted via the key switch.If the voltage of the PV array exceeds the sum of the values of PvVtgStrLevMin and PvVtgRisoDif, a waiting time of approximately 15 minutes has elapsed and there are no insulation errors present, the inverter ends the automatic plant maintenance and switches into feed-in operation.

Insulation monitoringIf the error message 3501 ‒ Insulation Failure is displayed, the insulation is defective. In this case, a qualified person needs to check and, if necessary, repair the insulation and then acknowledge the error.Once the error has been corrected, the plant maintenance can be ended via the parameter RemMntSvc (see Section 10.1.3, page 76).Type of insulation monitoring device usedThe insulation monitoring device used is the A-ISOMETER iso-PV1685 device supplied by Bender GmbH & Co. KG.

Manually ending plant maintenanceThe automatic resetting of the parameter RemMntSvc after a ground fault results in the loss of the UL listing.



3.7 Grid Management Services3.7.1 RequirementsPV plants must participate in feed-in management in accordance with IEEE 1547. First and foremost, the grid operator must be able to limit the power of the PV plant by remote control and temporarily reduce it to zero in critical cases. The grid operator's relevant control commands must therefore be transmitted to the inverter quickly and reliably for implementation.The following figure shows how the specifications of the grid operator are implemented. The Power Reducer Box sends the specifications of the grid operators to the inverter.

Figure 14: Principle of grid integrationBesides the Power Reducer Box, there are two other options for meeting the requirement of grid management:

• Receiving the signals via two analog inputs on the inverter• Manually adjusting the specifications via parameters

3.7.2 Active Power LimitationThere are five methods of limiting active power independently of power frequency. The limit can be configured by means of a parameter or supplied by the grid operator as an external signal(see Section 7.2, page 53).In addition to these methods, the active power can also be limited as a function of the power frequency (see Section 7.1, page 52).

3.7.3 Reactive Power SetpointThe inverter can provide reactive power. There are eleven methods for selecting the setpoint. They include entering a fixed parameter, processing an external signal from the grid operator or specifying the reactive power using adjustable characteristic curve parameters (see Section 8, page 56).

3.7.4 Full and Limited Dynamic Grid Support (FRT)With full dynamic grid support, the inverter supports the utility grid during a brief grid voltage drop by feeding in reactive current. In this case, the behavior of the inverter depends on the percentage ratio of line voltage VGrid to nominal voltage V.



With limited dynamic grid support, the inverter interrupts the grid feed-in during the grid voltage drop.

Figure 15: Maximum duration of a voltage dip that the inverter can work through without disconnecting from the utility grid

The operating mode of the dynamic grid support is set via the parameter FRTMod. With this, the full dynamic grid support (FRT_BDEW), the full dynamic grid support with FRT characteristic curve (FRT_SDLWindV) and the limited dynamic grid support (FRT_Partial) can be selected.The level of reactive current provided during full dynamic grid support is determined via the parameter FRTArGraNom. The level of reactive current provided during full dynamic grid support with FRT characteristic curve is determined via the parameters FRT2ArGraNomHi and FRT2ArGraNomLo.

Ratio VGrid/V Behavior of the inverter90% to 100% The ratio of line voltage VGrid to nominal voltage V is in the normal range and the inverter feeds in

without any problem.20% to 90% The ratio of line voltage VGrid to nominal voltage V is in the critical range. There is a disturbance

in the utility grid. While this disturbance remains present, the inverter supports the electricity grid with reactive current.The inverter can bridge disturbances of up to two seconds without disconnecting from the utility grid. If the set grid monitoring time is exceeded during this period, the inverter disconnects from the utility grid.

0% to 20% The ratio of line voltage VGrid to nominal voltage V is in the critical range. There is a disturbance in the utility grid. While this disturbance remains present, the inverter supports the electricity grid with reactive current.The inverter can bridge disturbances of up to one second without disconnecting from the utility grid. The requirement is that the relationship VGrid/V was >= 90% before the error occurred.If the set grid monitoring time is exceeded during this period, the inverter disconnects from the utility grid.



Contact the SMA Service Line to activate the function "FRT" and to change the operating mode. Contact the SMA Service Line before setting the FRTArGraNom parameter to a value greater than 2.

3.7.5 Decoupling Protection RampAfter a grid error, the inverter restarts at a maximum of 10% of nominal power per minute using a decoupling protection ramp. You have the option of switching this decoupling protection ramp on or off. If you deactivate the decoupling protection ramp, the inverter runs up to the maximum power in the shortest time possible. If you wish to deactivate the decoupling protection ramp, contact the SMA Service Line.

3.7.6 Grid Management ShutdownIf the utility grid becomes unstable and overloaded, the grid management service requires that the inverter disconnects from the grid immediately. In such cases, the relevant signal will be sent by the grid operator or the safety system at the grid transfer point. The inverter disconnects from the utility grid immediately and displays the error message 9013. The error will be reset in the inverter after a corresponding signal is sent by the grid operator or the transfer point's safety system.

Full and limited dynamic grid support and islanding detectionThe function "FRT" cannot be active at the same time as the function "Active Islanding Detection". If the "FRT" function is activated , the "Active Island Detection" function is deactivated automatically. Changing this parameter therefore results in the loss of the UL listing.The "FRT" function can be active at the same time as the "External Islanding Detection" function. For this, the parameters VCtllLimTm and VCtlllLimTm must be set to 2,000 ms.



3.7.7 Q at Night (

With the configuration option "Q at Night", the inverter can provide reactive power in order to stabilize the utility grid during non-feed-in operation, e.g. at night. This function is independent of normal feed-in operation.Only limited dynamic grid support is available in the operating state "Q at Night".

Figure 16: General overview of the operating states of the inverter in the operating state "Q at Night" If the AC power generated by the inverter falls below 5 kW, the inverter switches from feed-in operation to "Q at Night" operation. The inverter feeds in reactive power in accordance with the parameters set. Since this status can also occur during the day, the DC switchgear remains closed at first in order to avoid unnecessary switching of the DC switchgear. If the inverter has been in the "Q at Night" operation for one hour or the DC current falls below 60 A, the DC switchgear opens. The inverter continues to feed in reactive power.If reactive power feed-in is interrupted after a grid fault and the AC contactor is opened while the DC switchgear is open, the DC circuit is initially pre-charged. This reduces the stress on the electronic components. This procedure requires a maximum of one minute. Once the DC circuit is sufficiently pre-charged, the AC contactor is closed and the inverter monitors the grid limits. If all of the feed-in requirements are met, the inverter starts reactive power feed-in again within one minute. While the inverter is feeding in reactive power, the inverter monitors at the same time whether the conditions for active power feed-in have been met. If the feed-in requirements are met, the inverter closes the DC switchgear and switches to feed-in operation.The amount of reverse current is set to -60 A by default in the parameter QoDInvCurPv to protect the PV array. This value should be adjusted according to the maximum permissible reverse current of the PV array.

Q at Night is not UL listedThe order option "Q at Night" is not part of the UL 1741 listing, but may be used without loss of inverter certification if permitted by the Authority Having Jurisdiction (AHJ).



3.8 Islanding DetectionStand-alone grids form when the following conditions occur simultaneously:

• The medium-voltage grid fails. • The inverter feeds in an amount x of power. There is an electrical load on the same branch of the grid with a load

equal to that of power x.There are two methods for islanding detection:

• Active Islanding Detection*• External Islanding Detection

Active Islanding DetectionThe inverter detects the formation of stand-alone grids during a grid failure and disconnects the inverter from the utility grid.This function is set via the parameter EnaAID and cannot be active at the same time as the "FRT" function.

External Islanding DetectionIn the event of a grid failure, the formation of stand-alone grids is detected at the farm level. If a stand-alone grid is formed, a signal is transmitted to the fast stop input of the inverter. If the signal appears at the fast stop input of the inverter while the inverter is in the "MPP load operation" operating state, the inverter switches to the operating state "Shutdown". Once shutdown is complete, the AC contactor and the DC switching device open automatically and the inverter switches to the operating state "Stop".For external islanding detection, a suitable cable must be connected to the inverter fast stop input during installation.

3.9 Schematic DiagramSchematic diagrams in PDF format contain jump marks. By double clicking a jump mark, the display will change to the corresponding current path or the referenced place in the equipment list. SMA recommends using schematic diagrams in PDF format during troubleshooting. The schematic diagrams in PDF format are available on request. Contact the SMA Service Line.

* Not with SC 850CP-US and SC 900CP-US

4 Touch Display of the Inverter SMA America, LLC


4 Touch Display of the Inverter4.1 Touch Display LayoutThe touch display of the inverter is used to display instantaneous values and parameter settings.The functions are activated by tapping on the appropriate symbols on the touch display.The touch display is divided into three areas.

Figure 17: Touch display areas

4.2 Explanation of Symbols4.2.1 Status Info Line

Figure 18: Structure of the status info line

Position DescriptionA Status info lineB Information areaC Navigation line

SMA America, LLC 4 Touch Display of the Inverter


4.2.2 Information AreaMain MenuYou can access the following sub-menus and screens from the main menu:

Position DescriptionA Number of the active menuB Symbol indicating whether the inverter is currently password-protected or is available for configuration.C Date and time display

Symbol Description ExplanationE-today line graph Select this symbol to see the energy fed-in during the current day in kWh.

E-total bar chart Select this symbol to see the energy fed-in over the last 14 days in kWh.

DC side Select this symbol to see the following instantaneous values:• PV power in W• Insulation resistance in Ω• PV current in A• PV voltage in V

The symbol also appears on the page that opens. Select this symbol to see the sub-menu level diagrams.

Switch on DC side or AC side is closed

If you see this symbol between the "DC side" symbol and the "Inverter data" symbol, the DC switching device is closed.If you see this symbol between the "Inverter data" symbol and the "AC side" symbol, the AC contactor is closed.

Switch on DC side or AC side is open

If you see this symbol between the "DC side" symbol and the "Inverter data" symbol, the DC switching device is open.If you see this symbol between the "Inverter data" symbol and the "AC side" symbol, the AC contactor is open.

Status of switches on DC side or AC side is not known

If you see this symbol between the "DC side" symbol and the "Inverter data" symbol, the switch status of the DC switching device is not known.If you see this symbol between the "Inverter data" symbol and the "AC side" symbol, the switch status of the AC contactor is not known.

Inverter data Select this symbol to see the following data:• Device type• Operating state• Symbol for utility grid menu• Symbol for temperature display• Symbol for fan display



Settings MenuTo access the settings menu, tap the corresponding symbol in the navigation bar.

AC side Select this symbol to see the following instantaneous values:• Active power in W• Reactive power in VAr• Power frequency in Hz• Alternating current in A• AC voltage in V

Grid Select this symbol to display the following on the first page of the menu:• Active procedure for active power limitation(see Section 7 "Active Power

Limitation", page 52)• Target active power in kW• Actual active power in kW

Select to see the following data on the second menu page:• Active procedure for reactive power setpoint (see Section 8 "Reactive Power

Control", page 56)• Target reactive power in VAr• Target displacement power factor cos φ• Target excitation type of the displacement power factor• Actual reactive power in VAr• Actual displacement power factor cos φ• Actual excitation type of the displacement power factor

Symbol Description ExplanationLanguage selection Select this symbol to open the language selection menu (see Section 4.3, page 46).

Contrast setting Select this symbol to open the contrast setting menu (see Section 4.6, page 46).

Time setting Select this symbol to open the time setting menu (see Section 4.4, page 46).

Format selection Select this symbol to open the format selection menu (see Section 4.5, page 46).

Password entry Select this symbol to open the password entry menu (see Section 4.7, page 47).

Symbol Description Explanation



Diagrams of the main menu level and sub-menu levelSelect the symbol to see the sub-menu level diagrams. The data displayed depends on the menu in which you select the symbol.

4.2.3 Navigation Line

Number of the active menu Data displayed103 Energy fed in by the inverter during the current day104 Energy fed in by the inverter during the last 14 days132 to 133 Group currents of the individual inverter String-Monitors140 to 146 String currents of the individual inverter String-Monitors

Symbol Description ExplanationBack Select this symbol to go back to the previous page.

Homepage Select this symbol to go to the homepage.

Settings Select this symbol to access the following symbols:• - Language selection• - Brightness setting• - Time setting• - Format selection• - Password entry

Information Select this symbol to see the following information:• OS: Version of the operating system• App.: Version of the application software• Language: Selected language• Ser.No.: Serial number of the inverter

Error This symbol appears when an error occurs.The symbol is displayed both in the symbol where the error has occurred and in the menu bar.Select this symbol from the menu bar to see the following data:

• ErrNo: Error number• TmsRmg: Time until reconnection• Msg: Error message• Dsc: Corrective measure

Service The symbol appears when you should contact the SMA Service Line.The symbol appears when you should have the error corrected by your installer. Contact your installer.



4.3 Selecting the Language1. Select .2. Select .3. Select the language based on the country symbols.4. Confirm entry by selecting .

4.4 Changing the Date, Time, and Time Zone

Procedure:1. Select .2. Select .3. To change the date, select the day, month and year in the field. Use the

and buttons to change the day, month and year.4. To change the time, select the hour, minute and second one after another in the field. Use and to change

the hours, minutes and seconds.5. To change the time zone, select a time zone in the field. Use the and buttons to change the time zone.

4.5 Selecting the Display Format1. Select .2. Select .3. Select the date format.4. Select the hour format.5. Select the number format.6. Confirm entry by selecting .

4.6 Setting the Brightness1. Select .2. Select .3. Set the brightness. Select for a darker screen or for a lighter screen.4. Confirm entry by selecting .

SC-COM accepts changesThe SC-COM will accept date, time or time zone changes made on the touch display.



4.7 Entering the Installer Password

Procedure:1. Select .2. Select .3. Enter the installer password. Use the keypad to do this.4. Confirm entry by selecting .

The symbol appears in the status info line. The status info line does not show the symbol?

An incorrect password was entered.• Enter the password again.

Installer accessThe "Installer" access level is activated by entering the installer password.The access level will be reset after 15 minutes.

5 Plant Network SMA America, LLC


5 Plant Network5.1 Plant Network StructureIn order to connect the inverter to a computer via the service interface or via the Internet, the SC-COM must be set up in the plant network. To allow multiple inverter devices to operate on the same network, the SC-COM of each inverter must be assigned a unique network address.

Figure 19: Plant network of two Sunny Central inverters with touch display (example)

SMA America, LLC 5 Plant Network


Figure 20: Basic structure of large-scale plant networks

5.2 Setting the IP Address on the LaptopBefore the laptop can communicate with the inverter, you must set the laptop network settings to those of the inverter.

Procedure:1. Make a note of the laptop IP address.2. Adjust the IP address of the laptop to the address range of the inverter.

Administrator rights in the operating systemYou will need the appropriate administrator rights in order to be able to change the laptop network settings.

• For questions about administrator rights, contact your network administrator.

5 Plant Network SMA America, LLC


5.3 Configuring the IP Address of the Inverter for Static NetworksThe inverter has 3 LAN interfaces for connecting nodes.

• The inverter-internal network is available via LAN1. The network settings for this interface are preset and cannot be changed. The default IP address of the LAN1 interface is 192.168.100.2.

• The control network is available via LAN2. Here the SC-COM receives the setpoint specifications of the grid operator and forwards these specifications to the inverter. The default IP address of the LAN2 interface is 10.112.4.1.

• The monitoring network is available via LAN3. The inverter sends data via this interface to Sunny Portal or the OPC client, for example, for visualization and analysis purposes. The default IP address of the LAN3 interface is 10.111.1.1.

Procedure:1. Log in to the user interface.2. Select Sunny Central > Settings > Network.3. In the IP address field, enter the static IP address that you want to use to access the inverter in the local network.4. Enter the subnet mask of your network in the Subnet mask field.5. Enter the gateway IP address of your network in the Gateway address field. Usually, the IP address of the router

has to be entered here.6. Enter the IP address of the DNS server (Domain Name System) in the DNS server address field. Usually, the IP

address of the router has to be entered here.7. Select [Save] and [Confirm].

5.4 Configuring the IP Address of the Inverter for Dynamic NetworksThe inverter can obtain the network settings from a DHCP server. The IP address, subnet mask, gateway and DNS server are automatically obtained from the DHCP server during startup of the inverter.

Procedure:1. Log in to the user interface.2. Select Sunny Central > Settings > Network.3. Activate DHCP in the IP address field.4. Select [Save].

Use of DHCPBefore setting the inverter to dynamic IP address assignment, check your DHCP server. The DHCP server must extend the lease of the assigned IP address. Do not use the DHCP server if it assigns a new IP address after the lease has expired. DHCP servers can normally list all devices to which you have assigned an IP address. You can now identify the inverter via its MAC address. The MAC address of your inverter can be found on the type label or by selecting Sunny Central > Info in the user interface.

SMA America, LLC 6 Communication with the SC-COM


6 Communication with the SC-COMThis section provides you with an overview of the options on how you can display inverter measured values, change parameters for inverter operation and add new hardware components to the PV plant communication.

6.1 Displaying Instantaneous ValuesThe SC-COM operating manual contains a detailed description of the SC-COM user interface.Procedure:

1. Log in to the user interface.2. Enter the password in the appropriate field on the homepage and confirm with [Login].3. Select Data > Devices.4. Select .

A list of existing device types appears.5. Select the desired device type.

A list appears containing all existing devices of this type.6. Select the desired device from the list.7. Select the Instantaneous values tab.

6.2 Changing ParametersParameters are changed via the user interface. You can access the inverter either on-site via a laptop or remotely via a computer.Procedure:

1. Log in to the user interface.2. Enter the installer password in the appropriate field on the homepage and confirm with [Login].3. Select Data > Devices.4. Select .

A list of existing device types appears.5. Select the desired device type.

A list appears containing all existing devices of this type.6. Select the desired device from the list.7. Select the Parameter tab.8. Change the desired parameter.9. Confirm the parameter entry with [Save].

6.3 Setting the Remote ShutdownThe inverter can be switched off and shut down via an external signal. Two 24 V terminals are connected to the customer connecting terminal plate for this purpose (see the Sunny Central installation manual supplied with the inverter).To use this function, the associated parameter must be activated.Procedure:

1. Ensure that the inverter is in the "Stop" operating state.2. Log in to the user interface.3. Enter the password in the appropriate field on the homepage and confirm with [Login].4. Set the ExlStrStpEna parameter on the user interface to On (see Section 6.2 "Changing Parameters", page 51).5. Confirm the parameter entry with [Save].

7 Active Power Limitation SMA America, LLC


7 Active Power LimitationThe inverter can limit its active power if requested by the grid operator. The limitation of the active power can be performed both dependent on the power frequency and independent of the frequency.The frequency-dependent active power limitation is regulated in accordance with the specifications of IEEE 1547 and cannot be changed. This Section describes the function and parameterization of both types of active power limitation.

7.1 Power Frequency-Dependent Active Power LimitationIn addition to the procedures for active power limitation that can be chosen using the P-WMod parameter, active power can be limited dependent on the power frequency.During active power limitation via the power frequency, the inverter constantly checks the connected power frequency.If the active power is to be limited by a hysteresis, the parameter WCtlHzMod must be set to CurveHys.

Figure 21: Inverter behavior when exceeding the P-HzStr frequency limit If the power frequency exceeds a limiting value defined in the parameter P-HzStr, shown here under point A, the inverter will save the current feed-in power Pcur. The reduced feed-in power is calculated based on this saved value. The reduction of the feed-in power is defined via the P-WGra parameter. This parameter indicates the percentage of the saved power Pcur by which the power per Hz will be reduced if the power frequency continues to rise.If the power frequency decreases again as shown here under point B, the last feed-in power reached will remain valid. Only if the power falls below the limiting value defined in the parameter P-HzStop, shown here in point C, can the amount of power fed in be increased again. The saved value Pcur will be rendered invalid. In addition, a minimum threshold for power frequency shortfall can be defined with the parameter P-HzStopMin, shown here at point D.

Operation failure of the inverter due to incorrectly set parametersIf the parameter settings for grid management services are incorrect, the inverter may not be able to meet the grid management requirements. This may lead to yield losses and disconnection of the inverter by the grid operator.

• When setting the mode of grid management services, ensure that the control procedures are parameterized as agreed with the grid operator.

•

SMA America, LLC 7 Active Power Limitation


If the power frequency exceeds the grid limit, the inverter will shut down and switch over to the "Grid monitoring" operating state. The inverter will remain in the "Grid monitoring" operating state until all feed-in conditions are fulfilled again.Calculating the active power limit:Formula: Plim = Pcur – ( (fpower – P-HzStr) * P-WGra * Pcur )

7.2 Active Power Limitation Independent of the Frequency7.2.1 Selecting the Procedure with the Parameter P-WModYou can set the active power limitation via the parameter P-WMod (see Section 6.2 "Changing Parameters", page 51). Use the parameter to configure how the specifications of the grid operator are to be received and implemented. The default setting for this parameter is Off.

There are five different procedures for power frequency-independent active power limitation:

Active Power Limitation Procedure and Setting Associated Parameters1. Ensure that the inverter is in the "Stop" operating state.2. Log in to the user interface.3. Enter the password in the appropriate field on the homepage and confirm with [Login].4. Change the parameter P-WMod in the user interface. Select the desired procedure from the list (see Section 6.2

"Changing Parameters", page 51).5. Change parameters belonging to the selected procedure.

Plim Power limitPcur Current powerfpower Power frequencyP-HzStr Selected frequency limit at which the feed-in power will be reducedP-WGra Gradient for reducing active power

Example:A inverter with 500 kW is feeding 350 kW (Pcur) into the utility grid. The frequency will reach up to 61.2 Hz.The difference between the current power frequency and P-HzStr (61.2 Hz - 60.2 Hz) multiplied by the gradient P-WGra (40%/Hz) results in an active power reduction of 40% in the last available power Pcur (350 kW). This results in a power limitation of 140 kW and a maximum active power of 210 kW.Calculation:210 kW = 350 kW – ( (61.2 Hz – 60.2 Hz) * 40 %/Hz * 350 kW )

Parameter blockingThe parameter P-WMod may only be changed in the operating state "Stop". The entry will not be accepted in other operating states.

Procedure DescriptionOff The active power is limited to the device nominal power Pmax.WCtlCom The active power limitation is received by the SC-COM via Modbus and then transmitted to the

inverter. WCnst The active power limitation is entered as an absolute value via the parameter P-W.WCnstNom The active power limitation is entered as a percentage value via the parameter P-WNom.WCnstNomAnIn The active power limitation is set at the input terminals using an analog signal for the setpoint.

7 Active Power Limitation SMA America, LLC


6. Confirm the parameter entry with [Save].

7.2.2 Off ProcedureThe feed-in power is limited to the parameter Pmax.The parameter Pmax defines the nominal power of the inverter and is set to the local conditions during commissioning. Before the parameter Pmax can be changed, the device must be in the operating state "Stop" and the installer password must be entered.

7.2.3 WCtlCom ProcedureThe setpoint for the active power limitation is received by the SC-COM via Modbus and then transmitted to the inverter. If the inverter has received no signal for five minutes, the error message will be displayed in the P-WModFailStt instantaneous value.

7.2.4 WCnst ProcedureThe active power limitation is entered as an absolute value via the parameter P-W.The parameter P-W defines the active power to be fed in. The parameter P-W can be changed during feed-in operation. The parameter P-W must not be greater than the parameter Pmax.

7.2.5 WCnstNom ProcedureThe active power limitation is set as a percentage value via the parameter P-WNom. The percentage value refers to the parameter Pmax.The parameter P-WNom indicates the percentage of maximum possible power to be fed in. The parameter P-WNom can be changed during feed-in operation.

7.2.6 WCnstNomAnln ProcedureThe active power limitation is set at the input terminals using an analog signal for specifying the setpoint (see Sunny Central installation manual). This is usually accomplished via a ripple control receiver.The electrical current strength of the connected signal determines the nominal active power.The analog measured values must be between 4 mA and 19 mA. If the analog signal is less than 2 mA, the error message will be displayed in the P-WModFailStt instantaneous value.

The analog value is converted to a setpoint for power limitation. Here, the parameter Pmax is the end point of the linear characteristic curve.

Parameters used Pmax

Parameters used none

Parameter used P-W

Parameter used P-WNom

Signal Power limit Description< 2 mA Last valid value or Pmax

after restartSignal is in the invalid range. The display shows error message 8701.

2 mA to 4 mA 0 kW No power is fed into the grid.4 mA to 19 mA 0 kW to Pmax The power fed into the grid is determined using a characteristic curve> 19 mA Pmax The power fed into the grid equals Pmax.


SMA America, LLC 7 Active Power Limitation


7.3 Displaying the Status of the Active Power LimitationThe instantaneous value P-WModStt displays the status of the active power limitation.

Procedure:• Display the instantaneous value of the P-WModStt channel on the user interface (see Section 6.1 "Displaying

Instantaneous Values", page 51).

7.4 Displaying Error Messages and Warnings of Active Power LimitationThe instantaneous value P-WModFailStt displays the error messages or warnings associated with active power limitation.

Procedure:• Display the instantaneous value P-WModFailStt on the user interface (see Section 6.1 "Displaying Instantaneous

Values", page 51).

Display DescriptionOff No procedure for active power limitation has been selected.WMax Active power is limited by the specified maximum limit. This limit is based on Pmax.Hz Active power is limited by a frequency increase.Tmp Active power is limited due to temperature derating.AmpPv Active power is limited via a PV current limitation.AmpAC The active power is limited via an AC current limitation.

Display Cause and corrective measuresOff No procedure for active power limitation has been selected.Ok A procedure for active power limitation has been selected and there are no errors.ComFail The WCtlCom procedure has been chosen and the expected signal with a valid active power limitation

has been absent for at least five minutes.Corrective measures:

• Ensure that the inverter and the Power Plant Controller can be accessed via the Internet.• Ensure that the inverter and the Power Plant Controller are connected correctly.• Ensure that the cabling between the inverter and Power Plant Controller is OK.

AnInFail The WCnstNomAnIn procedure has been chosen and the value measured at the analogue input is less than 2 mA.Corrective measures:

• Make sure the signal cable is correctly connected to the analog input.ComInvalid The WCtlCom procedure has been chosen and the information about the specified power output

contains invalid content.Corrective measures:

• Check the power specification settings.

8 Reactive Power Control SMA America, LLC


8 Reactive Power ControlThe inverter can supply reactive power if required by the grid operator. The grid operator defines the procedures and setpoints used for this.

8.1 Selecting Reactive Power Control Procedure with the Parameter Q-VArMod

You can set the procedure for reactive power regulation via the parameter Q-VArMod. Use the parameter to configure how the specifications of the grid operator are to be received and implemented.There are eleven different procedures for reactive power regulation. The default setting for this parameter is Off.



•

Procedure DescriptionOff The reactive power setpoint is limited to 0 kVAr.VArCtlCom The reactive power target value is received by the SC-COM via Modbus and then transmitted to

the inverter.The target value is transmitted as a percentage.

PFCtlCom The reactive power target value is received by the SC-COM via Modbus and then transmitted to the inverter. A displacement power factor cos φ is transmitted as a setpoint.

VArCnst The parameter Q-VAr is used to set the reactive power setpoint in kVAr.VArCnstNom The parameter Q-VArNom is used to set the reactive power setpoint as a percentage based on

Pmax.VArCnstNomAnIn The reactive power setpoint is imported via an analog input. The analog value is converted into

a reactive power setpoint. PFCnst The reactive power target value is set using a displacement power factor cos φ.PFCnstAnIn The reactive power setpoint is imported via the analog input for the setpoint. The analog value is

converted into a displacement power factor cos φ. PFCtlW The displacement power factor cos φ is set depending on the feed-in power. The dependency is

depicted by a parameterizable characteristic curve.VArCtlVol Reactive power is set depending on the line voltage. The parameterization of this function is

based on the medium voltage. VArCtlVolHystDb The supply of reactive power helps perform voltage-stabilizing measures in the event of

overvoltage or undervoltage. The parameterization is performed using a reactive power/voltage characteristic curve.

VArCtlVolHysDbA The provision of reactive power helps perform voltage-stabilizing measures in the event of overvoltage or undervoltage. The parameterization is carried out by means of a reactive power/voltage characteristic curve and an activation power.

SMA America, LLC 8 Reactive Power Control


Reactive Power Control Procedure and Setting Associated Parameters1. Ensure that the inverter is in the "Stop" operating state.2. Log in to the user interface.3. Enter the password in the appropriate field on the homepage and confirm with [Login].4. Change the parameter Q-VarMod (see Section 6.2 "Changing Parameters", page 51).5. Change parameters belonging to the selected procedure.

8.1.1 Off ProcedureThe reactive power setpoint is limited to 0 kVAr. This target value cannot be influenced.

8.1.2 VArCtlCom ProcedureThe reactive power target value is received by the SC-COM via Modbus and then transmitted to the inverter. The setpoint is detected as a percentage and converted to kVAr within the inverter.If the inverter has received no signal for five minutes, the error message in the Q-VArModFailStt instantaneous value will be displayed.

8.1.3 PFCtlCom ProcedureThe reactive power target value is received by the SC-COM via Modbus and then transmitted to the inverter. A displacement power factor cos φ is transmitted as a target value.If the inverter has received no signal for five minutes, the error message in the Q-VArModFailStt instantaneous value will be displayed.

8.1.4 VArCnst ProcedureThe parameter Q-VAr is used to set the reactive power setpoint in kVAr. The Q-VAr parameter may be within the range ‒Qmax to +Qmax.

8.1.5 VArCnstNom ProcedureThe parameter Q-VArNom is used to set the reactive power setpoint in %. The parameter Q-VArNom refers to Pmax. If the calculated amount of reactive power exceeds the predefined value of Qmax, the power will be limited to Qmax. If the calculated amount of reactive power falls below the predefined value of ‒Qmax, the power will be limited to ‒Qmax.

8.1.6 VArCnstNomAnln ProcedureThe reactive power setpoint is set at the input terminals via an analog signal for specifying the setpoint (see Sunny Central installation manual). This is usually accomplished via a ripple control receiver.

Parameter blockingThe parameter Q-VARMod may only be changed in the "Stop" operating state. The entry will not be accepted in other operating states.




Parameter used Q-VAr

Parameter used Q-VArNom



The analog value is converted into a reactive power setpoint. The electrical current strength of the connected signal determines the setpoint.The analog measured values must be between 4 mA and 19 mA. If the analog signal is less than 2 mA, the error message will be displayed in the Q-VArModFailStt instantaneous value.

The analog value is converted to a setpoint for power limitation. Here, the parameter Pmax is the end point of the linear characteristic curve.

Figure 22: Limiting the parameter Pmax to the parameter QmaxIf the value of Pmax exceeds the value of Qmax, the characteristic curve of the value Qmax will be limited to Qmax and the reactive power value in the range from +Qmax to +Pmax will remain constant at Qmax.If the value of ‒Pmax falls below the value of ‒Qmax, the characteristic curve of the value ‒Qmax will be limited to ‒Qmax and the reactive power value in the range from ‒Qmax to ‒Pmax will remain constant at ‒Qmax.

Signal Power limit Description< 2 mA Last valid value or 0 kVAr

after restartSignal is in the invalid range.

2 mA to 4 mA − Pmax The maximum amount of negatively excited reactive power is fed in.4 mA − Pmax Starting point of the characteristic curve

Maximum amount of negatively excited reactive power is fed in.11.5 mA 0 kVAr Zero-crossing of the characteristic curve

No reactive power is fed in.> 19 mA +Pmax End point of the characteristic curve

Maximum amount of positively excited reactive power is fed in.




8.1.7 PFCnst ProcedureThe reactive power setpoint is set using the parameters PF-PF and PF-PFExt. The parameter PF-PF indicates the displacement power factor cos φ and the parameter PF-PFExt indicates the degree of overexcitation or underexcitation.

8.1.8 PFCnstAnln ProcedureThe reactive power setpoint is set at the input terminals via an analog signal for specifying the setpoint (see Sunny Central installation manual). This is usually accomplished via a ripple control receiver.The analog value is converted into a displacement power factor cos φ. The electrical current strength of the connected signal determines the setpoint.The analog measured values must be between 4 mA and 19 mA. If the analog signal is less than 2 mA, the error message will be displayed in the Q-VArModFailStt instantaneous value.

The analog value is converted into a target value for the displacement power factor cos φ. Here, the parameter PFAbsMin is the start and end point of the linear characteristic curve.

Parameters used PF-PFPF-PFExt

Signal Power limit Description< 2 mA Last valid value or 1 after

restartSignal is in the invalid range.

2 mA to 4 mA PFAbsMin / underexcited

The maximum amount of negatively excited reactive power is fed in.

4 mA PFAbsMin / underexcited

Starting point of the characteristic curve Maximum amount of negatively excited reactive power is fed in.

11.5 mA 1 Zero-crossing of the characteristic curve No reactive power is fed in.

> 19 mA PFAbsMin/overexcited End point of the characteristic curve Maximum amount of positively excited reactive power is fed in.

Parameter used PFAbsMin



8.1.9 PFCtlW ProcedureFor the procedure PFCtlW, the displacement power factor cos φ is set depending on the feed-in capacity. The dependency is depicted by a parameterizable characteristic curve. The parameters of the characteristic curve may be set as increasing or decreasing. The start and end points of the characteristic curve can be set via parameters.

Figure 23: Characteristic curve for reducing reactive power depending on active powerOn the basis of a linear characteristic curve with an upper and lower limit, a displacement power factor cos φ can be regulated dependent on the active power fed in at the time. The start and end points of the characteristic curve can be set via parameters. The course of the characteristic curve is determined by setting the start and end points.Parameters used PF-PFStr

PF-PFExtStrPF-PFStopPF-PFExtStopPF-WStrPF-WStop



8.1.10 VArCtlVol Procedure

The reactive power is controlled depending on the line voltage. The reactive power setpoint is adjusted in stages.

Figure 24: Characteristic curve for reducing reactive power depending on line voltageIf the line voltage changes by the configurable voltage difference Q-VDif for the configurable duration of Q-VDifTm, the reactive power target value is adjusted to the value Q-VArGr.The parameterization of this function is based on the medium voltage.

8.1.11 VArCtlVolHystDb Procedure

By supplying reactive power, the inverter helps perform voltage-stabilizing measures in the event of overvoltage or undervoltage. The parameterization is performed using a reactive power/voltage characteristic curve. The characteristic curve can be configured flexibly by parameterizing the slope, a sort of "deadband" through two voltage points and a hysteresis.

Contact the SMA Service Line before changing any parameters.The VArCtlVol procedure may only be selected and configured after consultation with the SMA Service Line.

Parameters used Q-VDifQ-VArGraQ-VDifTmQ-VRtgOfsNom

Contact the SMA Service Line before changing any parameters.The VArCtlVolHystDb procedure may only be selected and configured after consultation with the SMA Service Line.



Figure 25: Characteristic curve for reducing reactive power without deadband and without hysteresis

Figure 26: Characteristic curve for reducing reactive power with deadband



Figure 27: Characteristic curve for reducing reactive power with hysteresis

Figure 28: Characteristic curve for reducing reactive power with deadband and hysteresisThe Q-VArTmsSpnt parameter determines the delay time after which the calculated reactive power target value is actively used.



In order to prevent several systems with this function from influencing each other, the Q-VArTmsVtg parameter can be used to set a delay time. This delay time indicates for how long a voltage change must be pending before a change in the reactive power supply results. This allows several systems to alternately control the line voltage at the grid connection joint.The Q-EnaTmsVtg parameter can be used to switch the delay time on and off.

8.2 Displaying Error Messages and Warnings for the Reactive Power Setpoint

The instantaneous value Q-VArModFailStt displays errors or warnings relating to the reactive power setpoint.

Procedure: Display the instantaneous value Q-VArModFailStt on the user interface (see Section 6.1 "Displaying Instantaneous Values", page 51).

Parameters used Q-VolWidNomQ-VolNomP1Q-VolNomP2Q-VArGraNomQ-VArTmsSpntQ-VArTmsVtgQ-EnaTmsVtg

Display Cause and corrective measuresOff No procedure for specifying the reactive power setpoint has been selected.Ok A procedure for specifying the reactive power setpoint has been selected and there are no errors.ComFail The VArCtlCom or PFCtlCom procedure has been chosen and the expected signal with a valid

reactive power setpoint has been absent for at least five minutes.Corrective measures:

• Ensure that the inverter and the Power Plant Controller can be accessed via the Internet.• Ensure that the inverter and the Power Plant Controller are connected correctly.• Ensure that the cabling between the inverter and Power Plant Controller is OK.

AnInFail The VArCnstNomAnIn or PFCnstNomAnIn procedure has been chosen and the value measured at the analog input is less than 2 mA.Corrective measures:

• Make sure the signal cable is correctly connected to the analog input.ComInvalid The VArCtlCom or PFCtlCom procedure has been chosen and the information on the power

specification settings contains invalid content.Corrective measures:

• Check the power specification settings.



8.3 Q at Night 8.3.1 Selecting the Mode with the Parameter QoDQ-VarModThe inverter can supply reactive power in the "Q at Night" operating state if required by the grid operator. The grid operator defines the modes and setpoints used for this. The settings for the "Q at Night" operating state are independent from normal feed-in operation.You can set the mode for reactive power control via the parameter QoDQ-VArMod. Use this parameter to configure how the specifications of the grid operator are to be received and implemented.There are seven different modes for reactive power control. The default value for this parameter is Off.

Procedure:1. Ensure that the inverter is in the operating state "Stop".2. Log in to the user interface.3. Enter the password in the appropriate field on the homepage and confirm with [Login].4. Change the parameter QoDQ-VArMod (see Section 6.2, page 51).5. Change parameters associated with the selected mode.6. You can select the desired behavior in the absence of setpoint specifications in the parameter PwrMonErrMod as

follows:

Mode DescriptionOff The reactive power setpoint is limited to 0 kVAr.VArCtlCom The SC-COM receives the reactive power setpoint via Modbus and transmits it to the inverter.VArCnst The parameter QoDQ-VAr is used to set the reactive power setpoint in kVAr.VArCnstNom The parameter QoDQ-VArNom is used to set the reactive power setpoint as a percentage

relative to Pmax.VArCnstNomAnIn The reactive power setpoint is imported via an analog input. The analog value is converted into a

reactive power setpoint. VArCtlVol The reactive power is configured as a function of the line voltage.VArCtlVolHystDb The provision of reactive power helps perform voltage-stabilizing measures in the event of

overvoltage or undervoltage. The parameterization is carried out by means of a reactive power/voltage characteristic curve.VArCtlVolHysDbA

(for Italy)

Parameter blockThe parameter QoDQ-VarMod can only be changed in the operating state "Stop". The entry will not be accepted in any other operating state.

Validity of parameters in feed-in operation and in Q at Night operationThe parameters used for this proxy value are also valid in feed-in operation and in Q at Night operation.

• Ensure that the settings of the parameters for the proxy values meet the requirements for feed-in and Q at Night operation.

Setting DescriptionLastVal If specified via communication: utilization of the last received value. In case of analog

setpoints: utilization of the last valid mean value



7. If SubVal has been selected, enter the proxy values for normal feed-in operation and for operation outside of normal feed-in operation, as follows:

8. In the parameter PwrMonErrTm configure the time lapse until recognition of the absence of setpoint values.9. Confirm the parameter entry with [Save].

8.3.1.1 No Q at Night: Off ProcedureThe reactive power setpoint is limited to 0 kVAr. This setpoint cannot be controlled.

8.3.1.2 Q at Night with Operation Command via Modbus Protocol: WCtlCom ProcedureThe SC-COM receives the reactive power setpoint via Modbus and transmits it to the inverter. The setpoint is transmitted as a percentage and converted to kVAr in the device.If the inverter has not received any signal for the last five minutes, the error message will be displayed in the instantaneous value Q-VArModFailStt.

8.3.1.3 Q at Night with Absolute Value: VArCnst ProcedureThe reactive power setpoint is set using the parameter QoDQ-VAr. Note that the parameter QoDQ-VAr may be within the range ‒QoDQmax to +QoDQmax.

8.3.1.4 Q at Night as a Percentage of the Nominal Power: VArCnstNom ProcedureThe parameter QoDQ-VArNom is used to set the reactive power setpoint in %. The parameter QoDQ-VArNom refers to Pmax. If the calculated amount of reactive power exceeds the predefined value of QoDQmax, the power will be limited to QoDQmax. If the calculated amount of reactive power falls below the predefined value of ‒QoDQmax, the power will be limited to ‒QoDQmax.

8.3.1.5 Q at Night via Standard Signal: VArCnstNomAnIn ProcedureThe reactive power setpoint is set via an analog signal at the input terminals for setpoint specification (see Sunny Central installation manual). This is usually implemented by a ripple control receiver. The analog value is converted into a reactive power setpoint. The electrical current strength of the connected signal determines the setpoint.

SubVal Utilization of the configured proxy values. SMA recommends use of the proxy values when setpoint specifications are effected via analog signals.

Parameters DescriptionQ-VArSubValRun Proxy value for the reactive power setpoint in feed-in operationPF-PFSubValRun Proxy value for the displacement power factor in feed-in operationPF-PFExtSubValR Proxy value for the excitation of the displacement power factor in feed-in operationQ-VArSubVal Proxy value for the reactive power setpoint outside of feed-in operationPF-PFSubVal Proxy value for the displacement power factor outside of feed-in operationPF-PFExtSubVal Proxy value for the excitation of the displacement power factor outside of feed-in operation



Parameters used QoDQ-VAr

Parameters used QoDQ-VArNom

Setting Description



The analog measured values must be between 4 mA and 19 mA. If the analog signal is less than 2 mA, the error message will be displayed in the instantaneous value Q-VArModFailStt.

The analog value is converted to a setpoint for power limitation. Here, the parameter QoDQmax is the end point of the linear characteristic curve.

Figure 29: Limitation of the parameter Pmax to the parameter QoDQmaxIf the value of Pmax exceeds the value of QoDQmax, the characteristic curve will be limited to QoDQmax at the value QQoDmax and the reactive power value will remain constant at QoDQmax in the range from +QQoDmax to +Pmax.If the value of ‒Pmax falls below the value of ‒QoDQmax, the characteristic curve will be limited to ‒QoDQmax at the value ‒QQoDmax and the reactive power value will remain constant at ‒QoDQmax in the range from ‒Pmax to ‒QQoDmax.

Signal Power limit Description< 2 mA Last valid value or 0 kVAr

after restartSignal is in the invalid range.

2 mA to 4 mA − Pmax The maximum amount of negatively excited reactive power is fed in.4 mA − Pmax Starting point of the characteristic curve

The maximum amount of negatively excited reactive power is fed in.11.5 mA 0 kVAr Zero-crossing of the characteristic curve

No reactive power is fed in.> 19 mA +Pmax End point of the characteristic curve

The maximum amount of positively excited reactive power is fed in.




8.3.1.6 Q at Night Depending on the Line Voltage: VArCtlVol Procedure

The reactive power is configured as a function of the line voltage. The reactive power setpoint is adjusted in stages.

Figure 30: Characteristic curve for reducing reactive power as a function of the line voltageIf the line voltage is changed by the configurable voltage difference Q-VDif for the configurable duration of Q-VDifTm, the reactive power setpoint will be adjusted by the value Q-VArGra.The parameterization of this function refers to the medium voltage.

8.3.1.7 Measures for Voltage Support through Parameterization of Reactive Power/Voltage Characteristic Curve: VArCtlVolHystDb Procedure

The provision of reactive power helps perform voltage-stabilizing measures in the event of overvoltage or undervoltage. The parameterization is carried out by means of a reactive power/voltage characteristic curve. The characteristic curve can be flexibly configured by parameterizing the slope, a type of deadband through two voltage points, and a hysteresis.

Contact the SMA Service Line before changing any parameters.The SMA Service Line must be consulted prior to selection or configuration of the VArCtlVol mode.

Validity of parameters in feed-in operation and in Q at Night operationThe parameters used for this mode are also valid for the VArCtlVol mode in feed-in operation.

• Make sure that the parameter settings meet the requirements of the VArCtlVol mode in feed-in operation and in Q at Night operation.

Parameters used Q-VDif Q-VArGra Q-VDifTm Q-VRtgOfsNom

Contact the SMA Service Line before changing any parameters.The SMA Service Line must be consulted prior to selection or configuration of the VArCtlVolHystDb mode.



Figure 31: Characteristic curve for reducing reactive power without deadband and without hysteresis

Figure 32: Characteristic curve for reducing reactive power with deadband



Figure 33: Characteristic curve for reducing reactive power with hysteresis

Figure 34: Characteristic curve for reducing reactive power with deadband and hysteresisThe parameter Q-VArTmsSpnt determines the delay time which must elapse before the calculated reactive power setpoint is actively used.



To avoid mutual interference of several systems with this function, the parameter Q-VArTmsVtg can be used to set a delay time. This delay time defines how long a voltage change must be pending before a change in reactive power feed-in is triggered. Consequently, control of the line voltage at the grid connection point can be staggered across several systems.You can activate and deactivate the delay time by means of the parameter Q-EnaTmsVtg.Parameters used Q-VolWidNom

Q-VolNomP1 Q-VolNomP2 Q-VArGraNom Q-VArTmsSpnt Q-VArTmsVtg Q-EnaTmsVtg

9 Grid Monitoring SMA America, LLC


9 Grid Monitoring

9.1 How Grid Monitoring WorksThe inverter has an integrated grid monitoring function. This means that the inverter monitors the utility grid to ensure that it remains within a definable range of limiting values. If the configured limiting values for the line voltage and the power frequency are exceeded or are not met for a specific time, the inverter disconnects from the utility grid.Some parameters can be adjusted (see Section 13.1.2 "Grid Monitoring/Grid Limits", page 101).

9.2 Monitoring the Line VoltageFor grid monitoring, two limiting values in percent are defined for the minimum line voltage and two for the maximum line voltage respectively in accordance with IEEE 1547. The percentage is based on the nominal voltage of the inverter.If the line voltage falls below the value defined in the parameters VCtllLim or VCtlllLim, the inverter waits for the period defined in the parameters VCtllLimTm and VCtlllLimTm and disconnects from the utility grid.If the line voltage increases above the value defined in the parameter VCtlhLim or VCtlhhLim, the inverter waits for the period defined in the parameter VCtlhLimTm or VCtlLimhhTm and disconnects from the utility grid.



•

Example: Inverter behavior in the event of undervoltageThe first limiting value for undervoltage is defined in the parameter VCtllLim and is 88% of the nominal voltage of the inverter. The associated period is set to 2,000 ms in the parameter VCtllLimTm. The second limiting value for undervoltage is defined in the parameter VCtlllLim and is 50% of the nominal voltage of the inverter. The associated time is set to 160 ms in the parameter VCtlllLimTm.The line voltage is 85% of the inverter nominal voltage and has therefore fallen below the first limit for undervoltage. The inverter waits 2,000 ms. If the line voltage does not increase above the first limiting value within this period, the inverter disconnects from the utility grid. If the line voltage falls below the second limiting value, the inverter switches off after 160 ms.

SMA America, LLC 9 Grid Monitoring


Figure 35: Parameters for monitoring the line voltage

For the setting ranges of the voltage limiting values, see Section 13.1.2.Procedure:

1. Log in to the user interface.2. Enter the installer password in the appropriate field on the homepage and confirm with [Login].3. If necessary, change the limiting value of the undervoltage in the parameter VCtlllLim (see Section 6.2, page 51).4. If necessary, change the limiting value of the overvoltage in the parameter VCtlhhLim (see Section 6.2, page 51).5. End the entering of parameters with [Save].

9.3 Monitoring the Power FrequencyFor the power frequency monitoring, two limiting values are defined for the minimum power frequency and one limiting value is defined for the maximum power frequency in accordance with IEEE 1547. Do not operate using a different parameter value unless directed by the utility.

Parameter Explanation Default 60 Hz value[50 Hz value]

VCtlllLim The second threshold of the undervoltage 50%VCtlllLimTm Time period for the second limiting value for undervoltage 160 ms [200 ms]VCtllLim The first threshold of the undervoltage 88%VCtllLimTm Time period for the first limiting value for undervoltage 2,000 msVCtlhLim The first threshold of the overvoltage 110%VCtlhLimTm Time period for the first limiting value for overvoltage 1,000 msVCtlhhLim The second threshold of the overvoltage 120%VCtlhhLimTm Time period for the second limiting value for overvoltage 160 ms [200 ms]

9 Grid Monitoring SMA America, LLC


If the power frequency falls below the value defined in the parameters HzCtllLim or HzCtlllLim, the inverter waits for the period defined in the parameters HzCtllLimTm and HzCtlllLimTm and disconnects from the utility grid.If the power frequency increases above the value defined in the parameter HzCtlhLim, the inverter waits for the period defined in the parameter HzCtlhLimTm and disconnects from the utility grid.

Figure 36: Parameters for monitoring the power frequency

9.4 Measurement AccuracyThe inverter is not equipped with a calibrated meter. The display values may deviate from the actual values and must not be used as a basis for invoicing. The inverter’s measured values are required for the system management and to control the current to be fed to the grid.

Example: Behavior of the inverter in the event of underfrequencyThe first limiting value for the underfrequency is defined in the parameter HzCtllLim and amounts to 59.3 Hz. The associated period is set to 160 ms in the parameter HzCtllLimTm. The second limiting value for the underfrequency is defined in the parameter HzCtlllLim and is 57 Hz. The associated period is set to 160 ms in the parameter VCtlllLimTm.The power frequency falls to 59 Hz and has therefore fallen below the first underfrequency limiting value. The inverter waits 160 ms. If the power frequency does not increase above the first limiting value within this period, the inverter disconnects from the utility grid.

Parameter Explanation Default 60 Hz value[50 Hz value]

HzCtllLim The first threshold of the underfrequency 59.3 Hz [49.3 Hz]HzCtllLimTm Time period for the first limiting value of the underfrequency 160 ms [200 ms]HzCtlllLim The second threshold of the underfrequency 57 Hz [47 Hz]HzCtlllLimTm Time period for the second limiting value of the underfrequency 160 ms [200 ms]HzCtlhLim Limiting value for the overfrequency 60.5 Hz [50.5 Hz]HzCtlhLimTm Time period for the threshold of the overfrequency 160 ms [200 ms]

SMA America, LLC 9 Grid Monitoring


Deviation:Voltage measurement: +/– 8.5 VFrequency measurement: +/– 0.06 HzDisconnect time: +/–4.5%

9.5 Grid Connection after Correction of ErrorIf a grid error has been rectified, the inverter will only switch on once the applicable utility grid meets a set of conditions. For example, the line voltage and the power frequency must remain within the set limiting values for grid connection for the duration of the grid monitoring period.

9.6 Setting the Medium VoltageThe medium voltage of the inverter must match the medium voltage of the medium-voltage grid.It is important that the transmission ratio of the external medium-voltage transformer is adjusted at the same time. The undervoltage side is already preset for the specific device.The default value of the parameter VRtg is specified in the parameter list (see Section 13.1.2 "Grid Monitoring/Grid Limits", page 101).Procedure:

1. Set the parameter TrfVolExlHi (see Section 6.2 "Changing Parameters", page 51).2. Set the parameter VRtg.3. Confirm the parameter entry with [Save].

10 Setting the Insulation Monitoring of the PV Plant SMA America, LLC


10 Setting the Insulation Monitoring of the PV PlantThis section provides an overview on how to operate the optional insulation monitoring.

10.1 Setting the Insulation Monitoring of the PV Plant with Advanced Remote GFDI and an Insulation Monitoring Device

10.1.1 Information on Insulating PV Modules Equipped with Advanced Remote GFDI and Insulation Monitoring Device

Ground fault monitoring with Advanced Remote GFDI does not provide protection from injury. The "Advanced Remote GFDI and insulation monitoring device" option allows for an automatic switching of the PV array from grounded operation to insulated operation. To ensure that there is no insulation error on the grounded terminal, an insulation measurement is carried out. After switching to insulated operation, the insulation monitoring device checks each terminal of the PV array for potential insulation errors.Switching to insulated operation is useful whenever you need to perform maintenance or service work on or near the PV array (e.g. cutting the grass) or check the status of the insulation at regular intervals.

10.1.2 Switching to Insulated Operation• Set the parameter RemMntSvc to On (see Section 6.2 "Changing Parameters", page 51).

The warning 3517 ‒ Isolated mode, isolation detection is displayed. After a waiting time of approximately 15 minutes has expired, the insulation monitoring is activated. The error

message 3501 ‒ Insulation Failure is displayed.The insulation is defective.• Have the insulation checked and, if necessary, repaired by a qualified person.• Acknowledge the error (see Section 11.3, page 78).

10.1.3 Switching to Grounded OperationSwitching to grounded operation is only possible if no insulation errors have been detected.

• Set the parameter RemMntSvc to Off (see Section 6.2 "Changing Parameters", page 51).or

• After a ground fault:– Turn the key switch to Stop and then back to Start after two seconds.

Danger to life due to electric shockHigh voltages are present in the inverter and its components. Touching live components results in death or serious injury due to electric shock.

• Switch off the inverter.• After switching the inverter off, wait 15 minutes before opening the inverter. This allows the capacitors to

discharge.• Do not touch live components.• Wear Hazard Risk Category 2 personal protective equipment.

SMA America, LLC 11 Troubleshooting


11 Troubleshooting11.1 Safety During Troubleshooting

11.2 Reading Error MessagesIf a disturbance occurs, you can read the error message via the touch display on the inverter or the user interface of the SC-COM.

11.2.1 Reading Error Messages via Touch DisplayIf an disturbance occurs, the touch display shows a warning symbol.Procedure:

• Select the warning symbol. The touch display lists the error number, delay time, error message and the necessary corrective measure to

eliminate the error.

11.2.2 Reading Error Messages via the User InterfaceYou can read errors on a PC via the user interface (see Section 6.1 "Displaying Instantaneous Values", page 51).Procedure:

1. Log in to the user interface.2. To display the error number, select the instantaneous value ErrNo in the instantaneous value view.3. To display the delay time, select the instantaneous value TmsRmg in the instantaneous value view.4. To display the error message, select the instantaneous value Msg in the instantaneous value view.5. To display the corrective measure, select the instantaneous value Dsc in the instantaneous value view.

Danger to life from electric shock due to high voltages in the inverterEven under fault conditions, there will be high voltages present in the inverter. Touching live components results in death or serious injury due to electric shock.

• All activities described in this section must be carried out by qualified personnel only.• Observe all safety precautions when working on the inverter.• Wear Hazard Risk Category 2 personal protective equipment for all work on the devices.• If you cannot remedy the disturbance with the help of this document, contact the SMA Service Line.

11 Troubleshooting SMA America, LLC


11.3 Acknowledging Error MessagesOnce the disturbance is rectified, you can acknowledge the error using the key switch on the inverter or the user interface.

11.3.1 Acknowledging the Error Messages via the Key Switch

Procedure:1. If there is an insulation error, switch the insulation monitoring device back on.2. Turn the key switch to Stop and then back to Start after two seconds.

11.3.2 Acknowledging Errors via the User Interface

You can only acknowledge error messages via the user interface after the installer password has been entered.Procedure:

1. If an insulation error has occurred, switch the insulation monitoring device back on.2. Log in to the user interface.3. Select the parameter Ackn in the device that displays the error and set it to Ackn.4. Confirm entry with [Save].

11.4 Error Messages11.4.1 Behavior of the Inverter under Fault ConditionsIf a disturbance occurs during inverter operation, this may be due to a warning or error.Each disturbance has two error levels that influence the display and system behavior. Only a few disturbance types cause the inverter to behave differently in the two error levels. The error level changes from 1 to 2 if the disturbance occurs five times within two hours or occurs permanently for two hours.A warning does not affect the behavior of the inverter. The cause of the warning must be established and remedied.If operation is interrupted due to an error, the inverter switches to the "Fault" operating state and opens the AC contactor and the DC switching device. The error, error number, error message and a symbol are displayed on the touch display (see Section 11.2.1 "Reading Error Messages via Touch Display", page 77).If the cause of the error is rectified and the error is no longer displayed, the error is deleted from the fault memory. To view previous errors after they have been deleted from the fault memory, an event file is saved on the SD card. The time when an error occurred and the type of error are entered in the event file.You will find the following information in the error tables in Section 11.4.2, 11.4.3 and 11.4.4:

Dealing with disturbancesError messages should only be acknowledged once the underlying causes have been eliminated.If the causes of the disturbance have not been eliminated, the disturbance will still be detected after acknowledgement and the error message will appear again.

Dealing with disturbancesError messages should only be acknowledged once the underlying causes have been eliminated.If the causes of the disturbance have not been eliminated, the disturbance will still be detected after acknowledgement and the error message will appear again.

Information Level Behavior ExplanationError no. ‒ ‒ Clearly identifies the disturbance presentExplanation ‒ ‒ Identifies possible causes of the disturbance present



Behavior of the inverter

Depends on the severity of the disturbanceDisturbance level S1, Disturbance level S2

Warning (W) The inverter has displayed a warning that does not influence the behavior of the inverter.

Time The inverter has detected an error and switches into the "Fault" operating state.In the process, the AC contactor and the DC switching device open. The inverter does not feed into the grid for the defined time.The time specifies how long the error will be displayed on the touch display and saved in the inverter as an error. If the time has elapsed, the error is no longer shown on the touch display. The inverter then checks whether the cause of the error has been rectified.If the cause of the error still exists after the time has expired or the error has been acknowledged, the error is occurs again and the inverter remains in the "Fault" operating state.

Acknowledge (A) The inverter switches to the "Fault" operating state and opens the AC contactor and the DC switching device. The inverter does not feed in until the error is acknowledged manually.When the error has been acknowledged, it is no longer shown on the touch display. The inverter then checks whether the cause of the error has been rectified.If the error is no longer present, it is deleted from the memory. If the cause of the error is still present after the error has been acknowledged, the error occurs again.

Day change (D) The inverter switches to the "Fault" operating state and opens the AC contactor and the DC switching device. The inverter does not feed into the grid.The error message is automatically reset when the day changes. If the error has been reset, it is no longer shown on the touch display. The inverter then checks whether the cause of the error has been rectified.If the error is no longer present, it is deleted from the memory. If the cause of the error is still present after the day has changed or after the error has been acknowledged, the error occurs again.

Plant-spec. (C) The inverter switches to the "Fault" operating state and opens the AC contactor and the DC switching device. The inverter does not feed into the grid. How long the inverter remains in this state depends on plant-specific influencing factors.If the time has elapsed, the error is no longer shown on the touch display. The inverter then checks whether the cause of the error has been rectified. If the error is no longer present, it is deleted from the memory.

Reset (R) ‒ The control is restarted. The relays are checked and the control's voltage supply is switched off. This process requires less than one minute. While the control is powered up, the regular waiting times of the inverter for grid monitoring are maintained.

Information Level Behavior Explanation



11.4.2 Error Numbers 01xx to 13xx - Disturbance on the Utility GridAfter a grid failure, the inverter monitors the utility grid for a specific period until it is reconnected.If the inverter monitors the utility grid after a grid error, the grid monitoring time is maintained.Certain errors, such as grid errors, cause the inverter to shut down. In this case, the instantaneous value TmsRmg indicates the time during which the inverter monitors the electricity grid until it is reconnected. This grid monitoring time can be defined in parameter GdErrTm.

Corrective measures

‒ ‒ The corrective measures specify measures that can help you rectify the error.

Error no. Explanation Behavior of the inverter

Corrective measures

S 1 S 2 R0103* Line voltage is too high. Overvoltage

detected by redundant monitoring.30 s 30 s ‒ • Check the line voltage.

• Check the grid connection.• Check whether the utility grid is

stable.• Make sure the external fuses

function properly.• Make sure the AC cable

connections are securely connected.

0104* Line voltage is too high. Overvoltage detected by standard monitoring.

C C ‒

0203* Line voltage is too low. Undervoltage detected by redundant monitoring.

30 s 30 s ‒

0204* The line voltage is too low. Undervoltage detected by standard monitoring.

30 s 30 s ‒

0205* A line conductor of the electricity grid has failed.

30 s 30 s ‒

0502* Power frequency is too low. Power frequency fault detected by standard monitoring.

30 s 30 s ‒ • Check power frequency.• Check the grid monitoring relay

display.• Make sure the fuses in the load

circuit function properly.0503* Power frequency is too high. Power

frequency fault detected by standard monitoring.

30 s 30 s ‒

0504* Power frequency is too low. Power frequency fault detected by redundant monitoring.

30 s 30 s ‒

0505* Power frequency is too high. Power frequency fault detected by redundant monitoring.

30 s 30 s ‒

0506* The inverter has detected a stand-alone grid and disconnected from the electricity grid.

W W ‒ • Check power frequency.

0801 One line conductor of the utility grid has failed.

30 s 30 s ‒ • Check the line voltage.• Make sure the external fuses

function properly.• Make sure the AC cable

connections are securely connected.

0802*

Information Level Behavior Explanation



11.4.3 Error Number 34xx to 40xx ‒ Disturbance on the PV Array

1301 Left rotating magnetic field is connected. 30 s A ‒ • Check phase position.• Make sure all fuses are switched

on.1500 The grid engagement conditions are not

achieved again after a grid error.W W ‒ • Check power frequency and line

voltage.* Depending on the parameterization, the error message must be acknowledged manually.


Corrective measures

S 1 S 2 R3403 The voltage of the PV generator is too high. 15 min 30 min ‒ • Check the DC input voltage.

• Check the module wiring and plant design.

3404 Open-circuit voltage is too high. Fault detected by standard monitoring.

15 min 30 min ‒

3406 The active power is too high due to the electrical voltage of the PV generator being too high.

15 min 30 min ‒

3501 The insulation monitoring device has measured an excessively low insulation resistance.For the options "GFDI and insulation monitoring device" and "Advanced Remote GFDI and insulation monitoring device", the insulation monitoring device is only active when the GFDI or the Advanced Remote GFDI is open.

C C ‒ • Check the PV array for insulation errors.

3502 The GFDI has tripped. C C ‒3504 The insulation monitoring device has

detected an insulation error. Since the parameter IsoErrIgn is set to On, this error is ignored.

W W ‒

3507 A ground fault has occurred on the ungrounded pole of the PV array.

A A ‒

3510 The inverter has found an insulation error on the inverter bridge.

A A ‒

3511 The Advanced Remote GFDI has detected a temporary ground fault.

‒ ‒ ‒

3512 The Advanced Remote GFDI has detected a permanent ground fault.

A A ‒

3517 Insulation measuring will be performed. W W ‒ ‒


Corrective measures

S 1 S 2 R



3601 Leakage current to ground has occurred in the PV array or the threshold defined in parameter RisoCtlWarn has been reached.

W W ‒ • Check the grounding and equipotential bonding.

• Check the module wiring and PV system design.

• Check the RisoCtlWarn parameter.

3803 The DC current of the PV array is too high. 1 min D x • Check the DC input current.• Check the module wiring and

plant design.4003 Reverse currents detected in the PV array

or DC connection polarity is reversed.30 s A ‒ • Check PV modules for short

circuits.• Check the module wiring and

plant design.• Make sure the DC terminals

have the correct polarity.


Corrective measures

S 1 S 2 R



11.4.4 Error Number 60xx to 90xx ‒ Disturbance on the inverterError no. Explanation Behavior of the

inverterCorrective measures

S 1 S 2 R6002 Calibration data cannot be loaded. ‒ ‒ ‒ • Contact the SMA Service Line.6113 Data block cannot be loaded from the

EEPROM or the channel list has changed (e.g. after a firmware update)

‒ ‒ ‒

6115 Hardware limiting values on the D/A converters cannot be set.

5 min 5 min x

6116 Real-time clock is not initialized. ‒ ‒ ‒6117 Device address not recognized. 5 min 5 min x6119 The data structure for the exchange

between the operation control unit and the digital signal processor is invalid.

5 min 5 min x

6120 Waiting for an answer from the OCU 30 s ‒ ‒6121 Waiting for an answer from the DSP 30 s ‒ ‒6122 Ten internal monitoring errors have

occurred in succession.‒ 5 min ‒

6128 General error 5 min 5 min ‒6404 Overcurrent on the L1, L2 or L3 line

conductors.30 s 5 min x

6405 Overvoltage in the DC link. 30 s 5 min x6410 24 V voltage supply is invalid. 5 min 5 min x6417 15 V voltage supply is invalid. 5 min 5 min x • Contact the SMA Service Line.6418 Overtemperature on the inverter bridge. 5 min 15 min x6422 The inverter bridge is in an undefined state. 30 s 5 min x6423 Overtemperature detected in the switch

cabinet.5 min 30 min x

6425 Synchronization error with the utility grid. 30 s 5 min x6427 Sensor error of the DC voltage

measurement.30 s C x

6440 Hermetic protection of the transformer no longer in place.

30 s 5 min ‒ • Check external transformer.

6441 Sensor error occurred during measurement of the DC voltage.

30 s 30 s ‒ • Contact the SMA Service Line.

6443 An unspecified error has occurred in the digital signal processor.

30 s ‒ ‒

6447 Self-test in the inverter bridge failed. A A ‒



6448 Insulation monitoring delivers non-permitted values.

W W ‒ • Check insulation monitoring.

6451 Measured AC voltage from the inverter is less than the voltage from the utility grid

W W ‒

6452 Measured AC voltage from the utility grid is less than the voltage from the inverter

W W ‒

6453 AC voltage in the grid limits monitor is mismatched

W W ‒

6454 AC current is mismatched W W ‒6455 AC voltage is mismatched W W ‒6456 DC link precharging switch is faulty W W ‒6457 Capacitor self-test has failed A A ‒6461 The insulation monitoring device has not

adopted the threshold15 mi

n15 min x • Set the threshold in parameter

RisoCtlWarn.6501 Internal temperature in the inverter is too

high.30 s 1 min ‒ • Make sure that the fans are

working properly.• Clean the fans.• Clean dirty fan inlets and

ventilation plates.

6502 The temperature of the inverter bridge is too high.

30 s 1 min ‒

6508 The outside temperature is too high. 30 s 1 min ‒6605 Fast stop has tripped. 30 s 1 min ‒ • Contact the SMA Service Line.7001 Cable break or short circuit at the

inverter temperature sensor.‒ ‒ ‒ • Check the wiring of the

temperature sensor.• Contact the SMA Service Line.7002 Cable break or short circuit at the

inverter temperature sensor.‒ ‒ ‒

7006 Cable break or short circuit at the inverter temperature sensor.

‒ ‒ ‒

7501 Internal fan is faulty. ‒ ‒ ‒ • Make sure that the fans are working properly.

• Clean the fans.• Clean dirty fan inlets and

ventilation plates.

7502 Internal fan is faulty. ‒ ‒ ‒7503 Stack fan is faulty. ‒ ‒ ‒7507 Motor-protective circuit-breaker of the fan

has tripped.‒ ‒ ‒

7601 Internal inverter error. 30 s 1 min x • Contact the SMA Service Line.7602 An internal communication error has

occurred.30 s 1 min x

7605 An internal communication error has occurred.

30 s 1 min x


Corrective measures

S 1 S 2 R



7704 Contactor error at the DC disconnection point.

30 s A ‒ • When disconnecting the inverter from voltage sources, check that all motor-driven circuit breaker switches are set to the OFF position. If the switches are not all set to the OFF position, set all the switches to the OFF position (see the Sunny Central installation manual).

• Contact the SMA Service Line.7706 Error at the digital input of the AC

disconnection point30 s A ‒ • Contact the SMA Service Line.

7707 Contactor error at the AC disconnection point

30 s A ‒

7708 No Advanced Remote GFDI response. ‒ ‒ ‒7709 90% of the switch cycles of the integrated

DC Switch reached.30 s 30 s ‒

7710 100% of the switch cycles of the integrated DC Switch reached.

30 s 30 s ‒

7714 Maximum GFDI switch cycles reached. 30 s 30 s ‒7801 Surge arrester is faulty. ‒ ‒ ‒ • Check the surge arrester.7901 An inverse current has occurred at the PV

array.1 min D x • Contact the SMA Service Line.

8701 External active power setpoints are less than 2 mA and therefore invalid. The last valid value is used or Pmax is used after the day has changed.Once the valid setpoints are available again, they are used.

‒ ‒ ‒

8702 There are several digital power setpoints present.

‒ ‒ ‒

8703 External displacement power factor cos φ is invalid.

‒ ‒ ‒

8704 External active and reactive power setpoints are invalid.

‒ ‒ ‒

9000 Power electronics self-test is being carried out. This message disappears once the self-test has been run.

W W ‒

9008 Doors were opened during operation. 30 s 1 min ‒9009 The fast stop was tripped manually. 30 s 30 s ‒ • Switch the fast stop on again

after correcting the error.


Corrective measures

S 1 S 2 R



9013 This relates to grid management shutdown (see Section 3.7.6, page 39). The error is reset via a signal from the grid operator or a grid transfer point safety system signal.

30 s 30 s ‒ • No corrective measures possible.

9019 Fast stop cabling is faulty. 30 s A ‒ • Check the fast stop cabling.


Corrective measures

S 1 S 2 R

SMA America, LLC 12 Instantaneous Values


12 Instantaneous ValuesThis section provides you with an overview of the instantaneous values of all the components in the PV plant that you can display via the user interface.

12.1 Inverter Instantaneous Values12.1.1 Power Limitation

12.1.2 Error Channels

12.1.3 Measured Values

Name DescriptionP-WModFailStt Error messages and warnings relating to active power limitationP-WModStt Status messages of active power limitation for data logsP-WSpt Current specified power outputPF Current displacement power factor cos φPFExt Current excitation of displacement power factor cos φQ-VArModFailStt Error messages and warnings relating to the reactive power setpoint

Name DescriptionDsc Measure for error correctionErrNo Error numberError Localization of errorGriSwStt State of AC contactorMode Operating state of the inverterMsg Error messagePrio Priority of error messageTmsRmg Time until reconnection

Name DescriptionExtSolIrr External irradiation sensor in W/m2

Fac Power frequency in HzIac Line current in AIpv PV current in APac AC power in kWPpv PV power in kWQac Reactive power in kVArRiso Insulation resistanceSac Apparent power in kVAVac Line voltage in VVpv PV voltage in V

12 Instantaneous Values SMA America, LLC


12.1.4 Device-Internal Values

12.1.5 Internal Counters

Name DescriptionCntry Country setting or specified standardDInExlStrStp Status of the remote shutdown unitDInGfdi GFDI stateDInKeySwStrStp Status of key switchDOutMntSvc State of the signal lamp for plant maintenanceDt DateFirmware Firmware version of the operation control unitFirmware 2 Firmware version of the digital signal processorTm TimeType Device type

Name DescriptionCntFanCab1* Operating hours of interior fan 1 in hCntFanCab2* Operating hours of interior fan 2 in hCntFanHs*

* These parameters can only be viewed after the installer password has been entered.

Operating hours of heat sink fan in hCntFanTrf1* Operating hours of transformer fan 1 in hCntFanTrf2* Operating hours of transformer fan 2 in hCntGfdiSw* Number GFDI switch cyclesCntDCSw Number of integrated DC switch cyclesCntHtCab2* Operating hours of heater 2 in hE-Today Energy fed into the grid during the current day in kWhE-total Total power fed into the grid in kWhh-HighV Operating hours of the inverter at high DC voltageh-On Operating hours of the inverter in hh-Total Feed-in hours of the inverter in h

SMA America, LLC 12 Instantaneous Values


12.1.6 Service-Relevant Display ValuesDisplay values that are only relevant to SMA are listed below.

12.2 Sunny Central String-Monitor-US12.2.1 Instantaneous Values

12.2.2 Device-Internal Values

12.2.3 Status Values

Name DescriptionBfrSolIrr Service information for SMACardSttFirmware 3Firmware 4Firmware 5Firmware 6Firmware-CRCFirmware-2-CRCFirmware-5-CRCFirmware-6-CRCModeParaSetSttStkErrFirstStkErrFlgsSVMMode

Name DescriptionCurCh1 Mean current value of string 1 over last 30 seconds; mean value exists for all eight

measuring channels

Name DescriptionFirmware Firmware version numberSerial Number Serial number of the Sunny Central String-MonitorSSMId Identification number of the Sunny Central String-Monitor This number is used for error

messages.

Name DescriptionComQ Quality of the communication connectionError Error detected by the Sunny Central String-MonitorMode Operating state of the Sunny Central String-Monitor

13 Parameters SMA America, LLC


13 ParametersThis section provides you with an overview of the parameters of all the components in the PV plant that you can display and change via the user interface.

13.1 Sunny Central Inverter13.1.1 Power LimitationName Description Value/range Explanation Default

valuePlimit* Nominal device power 0 kVA to 550 kVA SC 500CP-US-10 550 kVA

0 kVA to 550 kVA SC 500CP-US-10 600V 550 kVA0 kVA to 700 kVA SC 630CP-US-10 700 kVA0 kVA to 792 kVA SC 720CP-US-10 792 kVA0 kVA to 825 kVA SC 750CP-US-10 825 kVA0 kVA to 880 kVA SC 800CP-US-10 880 kVA0 kVA to 935 kVA SC 850CP-US-10 935 kVA0 kVA to 990 kVA SC 900CP-US-10 990 kVA

Pmax** Limitation of the nominal power of the inverter

0 kW to 550 kW SC 500CP-US-10 550 kW0 kW to 550 kW SC 500CP-US-10 600V 550 kW0 kW to 700 kW SC 630CP-US-10 700 kW0 kW to 792 kW SC 720CP-US-10 792 kW0 kW to 825 kW SC 750CP-US-10 825 kW0 kW to 880 kW SC 800CP-US-10 880 kW0 kW to 935 kW SC 850CP-US-10 935 kW0 kW to 990 kW SC 900CP-US-10 990 kW

P-WMod** Specification of the procedure for active power limitation

Off Limits active power to Pmax

Off

WCtlCom Limits active power via an external control unit

WCnst Limits active power in kW via the P-W parameter

WCnstNom Manually limits the active power in % (P-W) via communication devices, such as the SC-COM

WCnstNomAnIn Limits active power in % at the analog input

WCnstNomDigIn Limits active power at the digital inputThis procedure is not supported.

SMA America, LLC 13 Parameters


P-W Limits active power in kWThe active power cannot exceed Pmax.

0 kW to 1,000 kW SC 500CP-US-10 550 kWSC 500CP-US-10 600V 550 kWSC 630CP-US-10 700 kWSC 720CP-US-10 792 kWSC 750CP-US-10 825 kWSC 800CP-US-10 880 kWSC 850CP-US-10 935 kWSC 900CP-US-10 990 kW

P-WNom Limits active power in % 0% to 100% ‒ 100%WCtlHzMod** Frequency control

setpointOff Deactivated Off

CurveHys Procedure with hysteresisCurve Procedure without

hysteresisP-HzStr** Start of frequency control 40 Hz to 70 Hz ‒ 60.2 Hz

[50.2 Hz]P-HzStop** End of frequency control 40 Hz to 70 Hz ‒ 60.05 Hz

[50.05 Hz] P-HzStopMin** Minimum frequency at

end point of frequency control

40 Hz to 70 Hz ‒ 60.05 Hz[50.05 Hz]

P-WGra** Gradient of power reduction

1%/Hz to 100%/Hz ‒ 40%/Hz

Qlimit* Reactive power of device 0 kVAr to 332 kVAr SC 500CP-US-10 332 kVAr0 kVAr to 332 kVAr SC 500CP-US-10 600V 332 kVAr0 kVAr to 417 kVAr SC 630CP-US-10 417 kVAr0 kVAr to 477 kVAr SC 720CP-US-10 477 kVAr0 kVAr to 497 kVAr SC 750CP-US-10 497 kVAr0 kVAr to 530 kVAr SC 800CP-US-10 530 kVAr0 kVAr to 561 kVAr SC 850CP-US-10 561 kVAr0 kVAr to 594 kVAr SC 900CP-US-10 594 kVAr

Name Description Value/range Explanation Default value



Qmax** Limitation of the reactive power of the inverter

0 kVAr to 550 kVAr SC 500CP-US-10 550 kVAr0 kVAr to 550 kVAr SC 500CP-US-10 600V 550 kVAr0 kVAr to 700 kVAr SC 630CP-US-10 700 kVAr0 kVAr to 792 kVAr SC 720CP-US-10 792 kVAr0 kVAr to 825 kVAr SC 750CP-US-10 825 kVAr0 kVAr to 880 kVAr SC 800CP-US-10 880 kVAr0 kVAr to 935 kVAr SC 850CP-US-10 935 kVAr0 kVAr to 990 kVAr SC 900CP-US-10 990 kVAr

QoDQmax** Limitation of the reactive power of the Sunny Central in the operating state "Q at Night"The reactive power cannot exceed Qlimit.

0 kVAr to 300 kVAr SC 500CP-US-10 300 kVAr0 kVAr to 300 kVAr SC 500CP-US-10 600V 300 kVAr0 kVAr to 378 kVAr SC 630CP-US-10 378 kVAr0 kVAr to 432 kVAr SC 720CP-US-10 432 kVAr0 kVAr to 450 kVAr SC 750CP-US-10 450 kVAr0 kVAr to 480 kVAr SC 800CP-US-10 480 kVAr0 kVAr to 510 kVAr SC 850CP-US-10 510 kVAr0 kVAr to 540 kVAr SC 900CP-US-10 540 kVAr

PFAbsMin* Limitation of the displacement power factor cos φ

0.5 to 1 ‒ 0.8




Q-VArMod** Parameters for the reactive power setpoint procedure

Off Sets reactive power to 0 kVAr and displacement power factor cos φ to 1

Off

VArCtlCom Specifies reactive power via external control unit

PFCtlCom Specifies the displacement power factor cos φ and the excitation of the displacement power factor via an external control unit

VArCnst Specifies reactive power in kVAr via the parameter Q-VAr

VArCnstNom Specifies reactive power in % via the parameter Q-VArNom

VArCnstNomAnIn Specifies reactive power at the analog input QExlSpnt via the control unit

PFCnst Manually specifies the displacement power factor cos φ and the excitation of the displacement power factor via the parameters PF-PF and PF-PFExt

PFCnstAnIn Specifies the displacement power factor cos ϕ at the analog input QExlSpnt via the control unit

PFCtlW Specifies the displacement power factor cos φ depending on the feed-in power

VArCtlVol Specifies reactive power depending on the line voltage

VArCtlVolHystDb Specifies reactive power depending on the line voltage (Q = f(V) characteristic curve)

VArCtlVolHysDbA(for Italy)




QoDQ-VArMod** Specifies the reactive power setpoint mode in the operating state "Q at Night"

Off Sets reactive power to 0 kVAr and displacement power factor cos φ to 1

VArCtlCom Specifies the reactive power via an external control unit, such as the Power Reducer Box

VArCnst Specifies reactive power in kVAr via the parameter QoDQ-VAr

VArCnstNom Specifies reactive power in % via the parameter QoDQ-VArNom

VArCnstNomAnIn The reactive power setpoint is imported via an analog input.

VArCtlVol Specifies the reactive power depending on the line voltage

VArCtlVolHystDb Specifies the reactive power depending on the line voltage (Q = f(V) characteristic curve)

Q-VAr Reactive power in kVAr -550 kVAr to +550 kVAr SC 500CP-US-10 0-550 kVAr to +550 kVAr SC 500CP-US-10 600V-700 kVAr to +700 kVAr SC 630CP-US-10-792 kVAr to +792 kVAr SC 720CP-US-10-825 kVAr to +825 kVAr SC 750CP-US-10-880 kVAr to +880 kVAr SC 800CP-US-10-935 kVAr to +935 kVAr SC 850CP-US-10-990 kVAr to +990 kVAr SC 900CP-US-10

QoDQ-VAr** Reactive power in kVAr in the operating state "Q at Night"

-300 kVAr to +300 kVAr SC 500CP-US-10 0 kVAr-300 kVAr to +300 kVAr SC 500CP-US-10 600V-378 kVAr to +378 kVAr SC 630CP-US-10-432 kVAr to +432 kVAr SC 720CP-US-10-450 kVAr to +450 kVAr SC 750CP-US-10-480 kVAr to +480 kVAr SC 800CP-US-10-510 kVAr to +510 kVAr SC 850CP-US-10-540 kVAr to +540 kVAr SC 900CP-US-10

Q-VArNom Reactive power in % − 100% to +100% ‒ 0




QoDQ-VArNom Reactive power in % in the operating state "Q at Night"

− 100% to 100% ‒ 0

PF-PF Displacement power factor cos φThe lower limit is defined by parameter PFAbsMin.

0.5 to 1 ‒ 1

PF-PFExt Excitation of the displacement power factor cos φ.

OvExt Overexcited OvExtUnExt Underexcited

PF-PFStr** Displacement power factor cos φ at characteristic curve point 1The lower limit is defined by parameter PFAbsMin.

0.5 to 1 ‒ 0.8

PF-PFExtStr** Excitation of the displacement power factor cos φ at characteristic curve point 1


PF-PFStop** Displacement power factor cos φ at characteristic curve point 2The lower limit is defined by parameter PFAbsMin.

0.5 to 1 ‒ 0.8

PF-PFExtStop** Excitation of the displacement power factor cos φ at characteristic curve point 2


PF-WStr** Specifies the feed-in capacity in % at characteristic curve point 1

0% to 90% ‒ 0%

PF-WStop** Specifies the feed-in capacity in % at characteristic curve point 2

10% to 100% ‒ 100%




PF-WLockInVtg** Power at which the cos φ(P) characteristic curve is activated, in % relative to the nominal voltage

0% to 110% ‒ 0%

PF-WLockOutVtg** Power at which the cos φ(P) characteristic curve is deactivated, in % relative to the nominal voltage

0% to 110% ‒ 0%

PF-WLockTm** Waiting time for activating or deactivating the cos φ(P) characteristic curve

0 s to 100 s ‒ 2 s

Q-VDif** Definition or the voltage change that leads to a reactive power change.

0.1% to 10% The value corresponds to the nominal voltage VRtg.

1%

Q-VArGra** Definition of the reactive power setpoint change during a voltage step.

0% to 100% The value corresponds to the nominal power Pmax.

1%

Q-VDifTm** Time span in which a voltage change must be present before the reactive power target value Q-VArGra changes.

0 s to 120 s ‒ 1 s

Q-VRtgOfsNom** Changes the nominal voltage VRtg of the voltage-dependent reactive power controlThe parameter is active only if parameter Q-VArMod is set to VArCtlCol.

− 10% to +10% ‒ 0%

Q-VArGraNom** Reactive power gradient 0%/V to 40.06%/V SC 500CP-US-10 0%/V0%/V to 54.15%/V SC 500CP-US-10 600V0%/V to 31.47%/V SC 630CP-US-100%/V to 27.82%/V SC 720CP-US-100%/V to 26.70%/V SC 750CP-US-100%/V to 25.04%/V SC 800CP-US-100%/V to 23.56%/V SC 850CP-US-100%/V to 22.25%/V SC 900CP-US-10

Q-VolWidNom** Voltage range 0% to 20% ‒ 0%Q-VolNomP1** Voltage at point 1 80% to 120% ‒ 100%




Q-VolNomP2** Voltage at point 2 80% to 120% ‒ 100%Q-VArTmsSpnt** Time setting of the

characteristic curve point1 s to 60 s ‒ 10 s

Q-VArTmsVtg** Delay of line voltage 1 s to 60 s ‒ 10 sQ-EnaTmsVtg** Connection delay of line

voltageOff ‒ OffOn ‒

WGra** Active power change gradient

0.17%/s to 100%/s ‒ 100%/s

WGraEna** Activation of the active power change gradient

Off Deactivated OffOn Activated

WGraRecon** Active power change gradient

0.17%/s to 100%/s ‒ 100%/s

WGraReconEna** Activation of the decoupling protection ramp for reactivation


P-VtgGraNom Active power gradient with voltage-dependent active power limitation

0.017%/s to 100.000 %/s

‒ 0.166%/s

P-VtgEna Activation of the voltage-dependent active power limitation


P-VtgNomP1 Voltage at point 1 100% to 120% ‒ 110%P-VtgNomP2 Voltage at point 2 90% to 120% ‒ 100%P-VtgAtMin Minimum active power

with voltage-dependent active power limitation

0% to 100% ‒ 20%

PwrApLimitPrio*** Prioritization of active power or reactive power

PrioPwtRt Prioritization of reactive power

PrioPwtRt

PrioPwtAt Prioritization of active power

SDLimComSrc*** Selection of the SDLimit source

CAN COM UARTUART Via SMA Net

P-WSubVal Replacement value for the active power limitation outside of normal feed-in operation during communication disturbance

0 kW to 1,000 kW ‒ 990 kW




Q-VArSubVal Replacement value for the reactive power setpoint outside of normal feed-in operation during communication disturbance


PF-PFSubVal Replacement value for cos φ outside of normal feed-in operation during communication disturbance

0.9 to 1 ‒ 1

PF-PFExtSubVal Replacement value of excitation type during communication disturbance


P-WSubValRun Replacement value of active power limitation outside of normal feed-in operation during communication disturbance

0 kW to 1,000 kW ‒ 990 kW

Q-VArSubValRun Replacement value of reactive power setpoint for normal feed-in operation during communication disturbance


Q-VLockInW** Voltage value at which the Q(V) characteristic curve is activated, in % relative to the nominal voltage

0% to 100% ‒ 0%

Q-VLockOutW** Voltage value at which the Q(V) characteristic curve is deactivated, in % based on the nominal voltage

0% to 100% ‒ 0%




Q-VLockInTm** Waiting time for activating the Q(V) characteristic curve

0 s to 100 s ‒ 2 s

Q-VLockOutTm** Waiting time for deactivating the Q(V) characteristic curve

0 s to 100 s ‒ 2 s

Q-VArGraNomPos**

Reactive power gradient at a positive voltage change of the nominal voltage

0%/V to 40.06%/V SC 500CP-US-10 0%/V0%/V to 54.15%/V SC 500CP-US-10 600V0%/V to 31.47%/V SC 630CP-US-100%/V to 27.82%/V SC 720CP-US-100%/V to 26.70%/V SC 750CP-US-100%/V to 25.04%/V SC 800CP-US-100%/V to 23.56%/V SC 850CP-US-100%/V to 22.25%/V SC 900CP-US-10

Q-VArGraNomNeg**

Reactive power gradient at a negative voltage change of the nominal voltage

0%/V to 40.06%/V SC 500CP-US-10 0%/V0%/V to 54.15%/V SC 500CP-US-10 600V0%/V to 31.47%/V SC 630CP-US-100%/V to 27.82%/V SC 720CP-US-100%/V to 26.70%/V SC 750CP-US-100%/V to 25.04%/V SC 800CP-US-100%/V to 23.56%/V SC 850CP-US-100%/V to 22.25%/V SC 900CP-US-10

PF-PFSubValRun Replacement value cos φ for normal feed-in operation during communication disturbance

0.9 to 1 ‒ 1

PF-PFExtSubValR Replacement value of the excitation type for normal feed-in operation during communication disturbance


PwrMonErrMod Procedure used during communication disturbance

LastVal Use of last default values received

LastVal

SubVal Use of replacement values




PwrMonErrTm Communication downtime until replacement values are used

1 s to 999 s ‒ 300 s

* You can only view these parameters.** These parameters can only be changed after the installer password has been entered.

*** To view or change this parameter, you must enter the installer password.




13.1.2 Grid Monitoring/Grid LimitsUL listingThe default limiting values for the line voltage and the power frequency are configured in accordance with IEEE 1547, as required for UL1741 certification. The parameters for these limiting values are marked with ** in this section. These parameters may only be changed by authorized personnel at the written direction of the utility. The inverter can be operated outside the IEEE 1547 limits when required by the utility without loss of UL certification.

• Do not make any changes to the default limiting values for the grid monitoring parameters unless directed by the utility.

• Inverter capability range shown in brackets• 50 Hz values shown in [brackets]• Grid monitoring measurement accuracy:

– Voltage measurement: +/– 8.5 V– Frequency measurement: +/– 0.06 Hz– Disconnect time: +/–4.5%

Name Description Range Explanation Default value

VRtg* Nominal line voltage of the electricity grid

1 V to 70,000 V ‒ 20,000 V

VCtlMax* Limiting value for overvoltage tripping level 3

100% to 150% ‒ 100%

VCtlMaxTm* Tripping time at overvoltage level 3

0 ms to 1,000,000 ms

‒ 0 ms

VCtlhhLim** Limiting value for overvoltage release level 2

104% to 120% Parameter range specified by IEEE 1547. Do not operate outside the standard range unless directed by the utility.

120%

VCtlhhLimTm** Tripping time at overvoltage level 2

0 ms to 1,000,000 ms

Parameter value specified by IEEE 1547. Do not operate using a different parameter value unless directed by the utility.

160 ms[200 ms]

VCtlhLim** Limiting value for overvoltage release level 1

104% to 116% Parameter range specified by IEEE 1547. Do not operate outside the standard range unless directed by the utility.

110%

VCtlhLimTm** Tripping time at overvoltage level 1

0 ms to 1,000,000 ms


1,000 ms

VCtllLim** Limiting value for undervoltage release level 1

54% to 96%0% to 100%

Parameter range specified by IEEE 1547. Do not operate outside the standard range unless directed by the utility.

88%



VCtllLimTm** Tripping time at undervoltage level 1

160 ms to 2,000 ms


2,000 ms

VCtlllLim** Limiting value for undervoltage release level 2

50% to 96%0% to 100%

Parameter range specified by IEEE 1547. Do not operate outside the standard range unless directed by the utility.

50%

VCtlllLimTm** Tripping time at undervoltage level 2

160 ms to 1,000,000 ms

‒ 160 ms[200 ms]

VCtlMin* Limiting value for undervoltage release level 3

0% to 100% ‒ 0%

VCtlMinTm* Tripping time at undervoltage level 3

0 ms to 1,000,000 ms

‒ 0 ms

VCtllCharEna* Activation of dynamic undervoltage detection

Off OffOn

VCtllCharTm* Start time dynamic undervoltage detection

0 ms to 1,000,000 ms

‒ 77 ms

VCtlPeakMax* Overvoltage limiting value 120% to 150% ‒ 134%VCtlPeakMaxTm* Tripping time overvoltage 0 ms to 20 ms ‒ 1 msVCtlOpMinNom* Minimum connection voltage 0% to 100% ‒ 95%VCtlOpMaxNom* Maximum connection

voltage100% to 200% ‒ 106%

HzCtlOpMin* Minimum connection frequency

55 Hz to 60 Hz[45 Hz to 50 Hz]

‒ 59.5 Hz[49.5 Hz]

HzCtlOpMax* Maximum connection frequency


‒ 60.5 Hz[50.5 Hz]

HzCtlOpMaxRecon* Maximum connection frequency after grid error


‒ 60.5 Hz[50.5 Hz]

HzCtlMax* Threshold for overfrequency level 3


‒ 60 Hz[50 Hz]

HzCtlMaxTm* Tripping time for overfrequency level 3

0 ms to 1,000,000 ms

‒ 0 ms

HzCtlhhLim* Threshold for overfrequency level 2


‒ 65 Hz[55 Hz]

HzCtlhhLimTm* Tripping time for overfrequency level 2

0 ms to 1,000,000 ms

‒ 100 ms




HzCtlhLim** Threshold for overfrequency level 1



60.5 Hz[50.5 Hz]

HzCtlhLimTm** Tripping time for overfrequency level 1

0 ms to 1,000,000 ms


160 ms[200 ms]

HzCtllLim** Threshold for underfrequency level 1

57 Hz to 59.8 Hz[47 Hz to 49.8 Hz]


59.3 Hz[49.3 Hz]

HzCtllLimTm** Tripping time for underfrequency level 1

160 ms to 300,000 ms


160 ms[200 ms]

HzCtlllLim** Threshold for underfrequency level 2



57.0 Hz[47 Hz]

HzCtlllLimTm** Tripping time for underfrequency level 2

0 ms to 1,000,000 ms


160 ms[200 ms]

HzCtlMin* Threshold for underfrequency level 3


‒ 55 Hz[55 Hz]

HzCtlMinTm* Tripping time for underfrequency level 3

0 ms to 1,000,000 ms

‒ 100 ms

ManResOvrVol Manual switching on after overvoltage


ManResUndrVol Manual switching on after undervoltage


ManResOvrFrq Manual switching on after overfrequency


ManResUndrFrq Manual switching on after underfrequency





13.1.3 Grid Support

ManResPID Manual switching on interruption through PID


ManResPLD Manual activation after interruption due to disturbance in a line conductor


* These parameters can only be changed after the installer password has been entered.** This parameter may only be changed by authorized personnel at the written direction of the utility.


FRTMod** Dynamic grid support operating modes

FRT_BDEW Complete Dynamic Grid Support

FRT_OFF

FRT_Partial Limited Dynamic Grid Support

FRT_SDLWindV Complete dynamic grid support with FRT characteristic curve

FRT_OFF Deactivation of dynamic grid support

FRTSwOffTm** Deactivation delay of the LVRT

0 ms to 10,000 ms ‒ 500 ms

FRTArGraNom* Scaling of the k-factor for LVRT

1 to 10 ‒ 2

FRTDbVolNomMax** Upper limit of the voltage deadband

0% to 100% ‒ 10%

FRTDbVolNomMin** Lower limit of the voltage dead band

− 100% to 0% ‒ − 10%

FRT2ArGraNomHi* Gradient of the FRT characteristic curve in the event of overvoltage in the operating mode FRT_SDLWindV

1 to 10 ‒ 2

FRT2ArGraNomLo* Gradient of the FRT characteristic curve in the event of undervoltage in the operating mode FRT_SDLWindV

1 to 10 ‒ 2

EnaAid* Enables islanding detection Off Deactivated OnOn Activated

TrfVolExlHi* Line-to-line voltage on the overvoltage side of the external transformer

1 V to 70,000 V ‒ 20,000 V




13.1.4 Insulation Monitoring

TrfVolExlLo* Line-to-line voltage on the undervoltage side of the external transformer

1 V to 500 V SC 500CP-US-10 270 VSC 500CP-US-10 600V 200 VSC 630CP-US-10 315 VSC 720CP-US-10 324 VSC 750CP-US-10 342 VSC 800CP-US-10 360 VSC 850CP-US-10 386 VSC 900CP-US-10 405 V

* These parameters can only be changed after the installer password has been entered.


IsoErrIgn* Enables insulation error detection

Off Deactivated OnOn Activated

RemMntSvc PV array grounding will be removed.

Off Plant maintenance off OffOn Plant maintenance on

IsoSmidOutGrp Procedure for the correction of insulation errors.

Auto Automatic insulation measuring

Auto

Man Manual insulation measuring

Start Start of the isolation of the strings for insulation measuring

RisoCtlWarn Alert threshold for the insulation monitoring device iso-PV1685

0 kΩ to 50 kΩ ‒ 45 kΩ

PvVtgRisoStart Start voltage of the insulation measuring

0 V to 1,200 V SC 500CP-US-10 500 VSC 500CP-US-10 600V 390 VSC 630CP-US-10 610 VSC 720CP-US-10 675 VSC 750CP-US-10 715 VSC 800CP-US-10 760 VSC 850CP-US-10 760 VSC 900CP-US-10 770 V

PvVtgRisoDif Difference voltage to PvVtgStrLevMin for changing from insulation measuring into feed-in operation

− 250 V to +250 V ‒ 0 V

IsoDev* Selection of the insulation monitoring device

isoPV3 ‒ isoPV1685isoPV1685 ‒




13.1.5 Device-Internal Values* These parameters can only be viewed and changed after the installer password has been entered.


PvPwrMinTr Threshold for starting the MPP tracker

0 W to 20 kW ‒ 20 kW

PvPwrMinTrT Timeout for starting the MPP tracker

1 s to 1,800 s ‒ 600 s

PvVtgStrLevMin* Threshold for switching to feed-in operation

0 V to 1,800 V SC 500CP-US-10 500 VSC 630CP-US-10 600V 390 VSC 630CP-US-10 610 VSC 720CP-US-10 675 VSC 750CP-US-10 715 VSC 800CP-US-10 760 VSC 850CP-US-10 760 VSC 900CP-US-10 770 V

PVStrT Timer: Target status switches from Wait-PV to Grid-Connect when timer elapses

1 s to 300 s ‒ 90 s

VArGra** Gradient of reactive power change (VAr/s)

0%/s to 200%/s ‒ 20%/s

QoDInvCurPv** Maximum allowed reverse current to the PV array

− 1,600 A to 0 A ‒ − 60 A

RmpVtgPvSNg Internal channel: negative PV voltage ramp (DSP)

0 V/s to 200 V/s ‒ 200 V/s

RmpVtgPvSPos Internal channel: positive PV voltage ramp (DSP)

0 V/s to 200 V/s ‒ 200 V/s

MppFact Ratio between maximum power PMPP of the PV cell at the maximum power point and the product of open-circuit voltage VOC and short-circuit current ISC

0.5 to 1 ‒ 0.8

Serial Number * Serial number of the inverter 0 to 2,147,483,647 ‒ ‒CntrySet* Setting the Country Country-specific ‒ ‒CardFunc* MMC/SD card function ‒ ‒ ‒

ForcedWrite SD card logoutStoFailHis Writes error history to

SD cardDtSet Date 20060101 to

20991231‒ 0

TmSet Time 0 to 235959 ‒ 0



TmZn Time zone GMT − 12:00 to GMT +12:00

Time zone setting Country-specific

ExtSolIrrOfs Offset of the external irradiation sensor

− 5,000 to +5,000 ‒ 0

ExtSolIrrGain Amplification of the external irradiation sensor

− 1,000 to +1,000 ‒ 1

CntRs* Resets meter h-Cnt Operating hours meter ‒E-Cnt Energy meter

CntFanHs All fan runtime metersCntFanCab1 Fan runtime meterCntFanCab2 Fan runtime meterCntHtCab2 Fan runtime meter

Ofs_h-On** Offset for operating hours 0 h to 2,147,482 h ‒ 0Ofs_h-Total** Offset for feed-in hours 0 h to 2,147,482 h ‒ 0Ofs_E-Total** Offset for total supplied energy 0 kWh to

214,748,367 kWh‒ 0

Ofs_CntFanHs* Offset for operating hours of heat sink fan

0 h to 2,147,482 h ‒ 0

Ofs_CntFanCab1* Offset for operating hours of internal fan 1

0 h to 2,147,482 h ‒ 0

Ofs_CntFanCab2* Offset for operating hours of internal fan 2

0 h to 2,147,482 h ‒ 0

Ofs_CntHtCab2* Offset for operating hours of internal heater 2

0 h to 2,147,482 h ‒ 0

SpntRemEna Enables the plant remotely Stop Deactivated RunRun Activated

Ackn Acknowledges errors in inverter Ackn Selects parameter to acknowledge an error

-

GdErrTm** Waiting time for grid error 0 s to 600 s ‒ 300 sExlStrStpEna* Activation of the external

shutdown signal / remote shutdown


ExlTrfErrEna* Activation of the hermetic protection of the medium-voltage transformer

Off Deactivated OnOn Activated

* These parameters can only be viewed after the installer password has been entered.** These parameters can only be changed after the installer password has been entered.


14 Contact SMA America, LLC


14 ContactIf you have technical problems concerning our products, contact the SMA Service Line. We require the following information in order to provide you with the necessary assistance:

• Device type• Serial number• Type and number of modules connected• Communication type• Error number and error message

United States/Estados Unidos

SMA America, LLCRocklin, CA

+1 877-MY-SMATech (+1 877-697-6283)*+1 916 625-0870**

* toll free for USA, Canada and Puerto Rico / Llamada gratuita en EE. UU., Canadá y Puerto Rico** international / internacional

Canada/Canadá

SMA Canada, Inc.Toronto

+1 877-MY-SMATech (+1 877-697-6283)***

*** toll free for Canada / gratuit pour le Canada

SMA America, LLC 15 Revision History


15 Revision HistoryIn this section, you will find an overview of the content changes in the new version of this document. The pages where

Revisions to version 5.0New additional information

Medium-voltage transformer requirements 9Q at Night 9

New dangerQ at Night 15

New functionIntegrated DC Switch 12, 22, 23, 24, 29Q at Night 40, 65SC-COM Modbus (Zone Monitor) 9

New label"ABC 50 Hz" 21"Closed" 20"DC-Switch" 20"Open" 20

New specification50 Hz operation 74, 91, 101, 102grid monitoring measurement accuracy 74, 101

New warningGFDI required 12

New warning labelDanger Do not pull out fuses under load 21Electric Shock due to Live Voltage 20Electric Shock Hazard 21

Revisions to version 5.1Deleted content

Overview and manual operation of the Insulation Monitoring Device 76New function

Integrated DC Switch cycle counter 88Revised hardware

Insulation monitoring device 33, 34, 35, 36Updated content

Clarified effect of IEEE 1547 limits on UL certification 73, 101, 103, 104DC disconnect requirements 22Hazard Risk Category 2 9, 13, 14, 15, 16, 76, 77lockout device 12, 22

15 Revision History SMA America, LLC


Personal protective equipment clothing requirement 16Personal protective equipment glove requirement 16Personal protective equipment specification 13, 16Trademark information 2

Revisions to version 5.2New error message

Error 0802 80Error 6461 84

New parameterFirmware-2-CRC 89Firmware-5-CRC 89Firmware-6-CRC 89Firmware-CRC 89IsoDev 105ManResPLD 104PF-WLockInVtg 96PF-WLockOutVtg 96PF-WLockTm 96P-HzStopMin 52, 91P-VtgAtMin 97P-VtgEna 97P-VtgGraNom 97P-VtgNomP1 97P-VtgNomP2 97QoDInvCurPv 40, 106QoDQmax 67, 92QoDQ-VAr 65, 66, 94QoDQ-VArMod 65, 94QoDQ-VArNom 65, 66, 95Q-VArGraNomNeg 99Q-VArGraNomPos 99Q-VLockInTm 99Q-VLockInW 98Q-VLockOutTm 99Q-VLockOutW 98RisoCtlWarn 34, 82, 84, 105VArCtlVolHysDbA 56, 65, 93VCtllCharEna 102VCtllCharTm 102WGraRecon 97

SMA America, LLC 15 Revision History


New parameter rangeHzCtlhLim added parameter range 103HzCtlhLimTm added parameter range 103HzCtllLim added parameter range 103HzCtllLimTm added parameter range 103HzCtlllLim added parameter range 103HzCtlllLimTm added parameter range 103Qlimit new maximum value SC 850CP-US-10 91Qlimit new maximum value SC 950CP-US-10 91QMax new maximum value and default 92QoDQMax new maximum value 92Q-VAr new minumum and maximum value 94Q-VArGraNom new maximum value 96Q-VArSubVal new minumum and maximum value 98Q-VArSubValRun new minumum and maximum value 98VCtlhhLimTm added parameter range 101VCtlhLimTm added parameter range 101VCtllLim added inverter setting range 101VCtlllLim added inverter setting range 102VCtlllLimTm new maximum value 102

New parameter valueCntFanCab1 107Curve 91CurveHys 52, 91FRT_OFF 104ManResOvrFrq default is Off 103ManResOvrVol default is Off 103ManResPID default is Off 104ManResUndrFrq default is Off 103ManResUndrVol default is Off 103WGra minimum 0.17%/s 97

New parameter unitsPlimit values in kVA 90

Updated contentUpdated figure 52

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SUNNY CENTRAL 500CP-US/CA / 500CP-US/CA 600V / 630CP