User Manual - SUNNY BOY 3.0-US / 3.8-US / 5.0-US / 6.0-US ... · Legal Provisions SMA Solar Technology America LLC 2 SBxx-US-1XP-40-BA-en-12 User Manual Legal Provisions No part of

SUNNY BOY

SBxx-US-1XP-40-BA-en-12 | Version 1.2ENGLISH

User ManualSUNNY BOY 3.0-US / 3.8-US / 5.0-US /6.0-US / 7.0-US / 7.7-US

Legal Provisions SMA Solar Technology America LLC

User ManualSBxx-US-1XP-40-BA-en-122

Legal ProvisionsNo part of this document may be reproduced, stored in a retrieval system, or transmitted, in anyform or by any means, be it electronic, mechanical, photographic, magnetic or otherwise, withoutthe prior written permission of SMA Solar Technology America LLC.Neither SMA Solar Technology America LLC nor SMA Solar Technology Canada Inc. makesrepresentations, express or implied, with respect to this documentation or any of the equipmentand/or software it may describe, including (with no limitation) any implied warranties of utility,merchantability, or fitness for any particular purpose. All such representations or warranties areexpressly disclaimed. Neither SMA Solar Technology America LLC nor its distributors or dealers norSMA 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 theabove exclusion may not apply.Specifications are subject to change without notice. Every attempt has been made to make thisdocument complete, accurate and up-to-date. Readers are cautioned, however, that productimprovements and field usage experience may cause SMA Solar Technology America LLC and/orSMA Solar Technology Canada Inc. to make changes to these specifications without advancenotice, or per contract provisions in those cases where a supply agreement requires advancenotice. SMA shall not be responsible for any damages, including indirect, incidental orconsequential 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.

SMA WarrantyYou can download the current warranty conditions from the Internet at www.SMA-Solar.com.

Software licensesThe licenses for the used software modules can be called up on the user interface of the product.

TrademarksAll trademarks are recognized, even if not explicitly identified as such. Missing designations do notmean that a product or brand is not a registered trademark.

SMA Solar Technology America LLC6020 West Oaks Blvd.Suite 300 Rocklin, CA 95765 U.S.A.

SMA Solar Technology Canada Inc.2425 Matheson Blvd. E7th FloorMississauga, ON L4W 5K4CanadaStatus: 6/29/2018Copyright © 2018 SMA Solar Technology America LLC. All rights reserved.

http://www.SMA-Solar.com

Table of ContentsSMA Solar Technology America LLC

User Manual SBxx-US-1XP-40-BA-en-12 3

Table of Contents1 Information on this Document................................................. 5

1.1 Validity ........................................................................................................................ 51.2 Target Group.............................................................................................................. 51.3 Content and Structure of this Document ................................................................... 51.4 Levels of warning messages ...................................................................................... 51.5 Symbols in the Document .......................................................................................... 61.6 Typographies in the document .................................................................................. 61.7 Designation in the document ..................................................................................... 71.8 Additional Information ............................................................................................... 7

2 Safety ........................................................................................ 82.1 Intended Use .............................................................................................................. 82.2 IMPORTANT SAFETY INSTRUCTIONS.................................................................... 9

3 Product Overview .................................................................... 123.1 Product Description .................................................................................................... 123.2 Symbols on the Product ............................................................................................. 133.3 Interfaces and Functions ............................................................................................ 143.4 LED Signals ................................................................................................................. 183.5 Display messages....................................................................................................... 19

4 Operation ................................................................................. 204.1 Establishing a connection to the user interface ........................................................ 20

4.1.1 Establishing a Direct Connection via Ethernet ...................................... 204.1.2 Establishing a direct connection via WLAN ......................................... 204.1.3 Establishing a Connection via Ethernet in the local network ............... 224.1.4 Establishing a Connection via WLAN in the Local Network ............... 23

4.2 Logging In and Out of the User Interface................................................................. 244.3 Activating and Operating the Display ...................................................................... 244.4 Start Page Design of the User Interface.................................................................... 264.5 Displaying and Downloading the Stored Data........................................................ 284.6 Starting the Installation Assistant ............................................................................... 294.7 Secure Power Supply Operation .............................................................................. 30

4.7.1 Activating Secure Power Supply Operation ......................................... 304.7.2 Deactivating Secure Power Supply Operation..................................... 31

4.8 Activate WPS Function............................................................................................... 314.9 Switching WLAN On and Off................................................................................... 324.10 Switching the Dynamic Power Display Off............................................................... 334.11 Changing the Password............................................................................................. 33

Table of Contents SMA Solar Technology America LLC


4.12 Changing Operating Parameters.............................................................................. 344.13 Configuring the Country Data Set............................................................................. 354.14 Activating of the Rapid Shutdown DC discharge function ...................................... 354.15 Configuring the Modbus Function............................................................................. 364.16 Setting SMA OptiTrac Global Peak ......................................................................... 364.17 Deactivating the Arc-Fault Circuit Interrupter (AFCI)................................................ 374.18 Saving the Configuration in a File............................................................................. 374.19 Adopting a Configuration from a File....................................................................... 374.20 Updating the Firmware .............................................................................................. 38

5 Cleaning the Inverter ............................................................... 40

6 Troubleshooting........................................................................ 416.1 Forgotten Password.................................................................................................... 416.2 Event Messages ......................................................................................................... 426.3 Checking the PV System for Ground Faults .............................................................. 606.4 Resetting the Operation Inhibition after Detection of an Arc Fault ......................... 64

7 Compliance Information .......................................................... 66

8 Contact ...................................................................................... 67

1 Information on this DocumentSMA Solar Technology America LLC


1 Information on this Document

1.1 ValidityThis document is valid for:

• SB3.0-1SP-US-40 (Sunny Boy 3.0-US)• SB3.8-1SP-US-40 (Sunny Boy 3.8-US)• SB5.0-1SP-US-40 (Sunny Boy 5.0-US)• SB6.0-1SP-US-40 (Sunny Boy 6.0-US)• SB7.0-1SP-US-40 (Sunny Boy 7.0-US)• SB7.7-1SP-US-40 (Sunny Boy 7.7-US)• SB3.0-1TP-US-40 (Sunny Boy 3.0-US)• SB3.8-1TP-US-40 (Sunny Boy 3.8-US)• SB5.0-1TP-US-40 (Sunny Boy 5.0-US)• SB6.0-1TP-US-40 (Sunny Boy 6.0-US)• SB7.0-1TP-US-40 (Sunny Boy 7.0-US)• SB7.7-1TP-US-40 (Sunny Boy 7.7-US)

1.2 Target GroupThis document is intended for qualified persons and end users. Only qualified persons are allowedto perform the activities marked in this document with a warning symbol and the caption"Qualified person". Tasks that do not require any particular qualification are not marked and canalso be performed by end users. Qualified persons must have the following skills:

• Knowledge of how an inverter works and is operated• Training in how to deal with the dangers and risks associated with installing, repairing and

using electrical devices and installations• Training in the installation and commissioning of electrical devices and installations• Knowledge of all applicable laws, standards and directives• Knowledge of and compliance with this document and all safety information

1.3 Content and Structure of this DocumentThis document describes the configuration, operation and troubleshooting of the product as well asthe operation of the product user interface.You will find the latest version of this document and further information on the product in PDF formatat www.SMA-Solar.com.Illustrations in this document are reduced to the essential information and may deviate from the realproduct.

1.4 Levels of warning messagesThe following levels of warning messages may occur when handling the product.


1 Information on this Document SMA Solar Technology America LLC


DANGERIndicates a hazardous situation which, if not avoided, will result in death or serious injury.

WARNINGIndicates a hazardous situation which, if not avoided, could result in death or serious injury.

CAUTIONIndicates a hazardous situation which, if not avoided, could result in minor or moderate injury.

NOTICEIndicates a situation which, if not avoided, can result in property damage.

1.5 Symbols in the DocumentSymbol Explanation

Information that is important for a specific topic or goal, but is not safety-rele-vant

☐ Indicates a requirement for meeting a specific goal

☑ Desired result

✖ A problem that might occur

Example

1.6 Typographies in the documentTypography Use Examplebold • Messages

• Terminals• Elements on a user interface• Elements to be selected• Elements to be entered

• Connect the insulatedconductors to the terminalsX703:1 to X703:6.

• Enter 10 in the fieldMinutes.

> • Connects several elements to beselected

• Select Settings > Date.

[Button][Key]

• Button or key to be selected orpressed

• Select [Enter].

1 Information on this DocumentSMA Solar Technology America LLC


1.7 Designation in the documentComplete designation Designation in this documentSMA Solar Technology America LLC SMA

SMA Solar Technology Canada Inc. SMA

Sunny Boy Inverter, product

1.8 Additional InformationFor more information, please go to www.SMA-Solar.com.

Title and information content Type of informationMounting, installation, commissioning and decommissioning Installation manual

"Application for SMA Grid Guard Code" Form

"PUBLIC CYBER SECURITY - Guidelines for a Secure PV SystemCommunication"

Technical information

"Efficiency and Derating"Efficiency and derating behavior of the SMA inverters

Technical Information

"Grid Support Utility Interactive Inverters"Information about how to activate and to set the grid supporting fea-tures according to UL 1741 SA


"Parameters and Measured Values"Overview of all inverter operating parameters and their configura-tion options


"SMA Modbus® Interface"List with the product specific SMA Modbus registers


"SMA Modbus® Interface"Information on the commissioning and configuration of the SMAModbus interface


"SunSpec® Modbus® Interface"List with the product specific SunSpec Modbus registers


"SunSpec® Modbus® Interface"Information on the commissioning and configuration of the SunSpecModbus interface


http://www.sma-solar.com

2 Safety SMA Solar Technology America LLC


2 Safety

2.1 Intended UseThe Sunny Boy is a transformerless PV inverter which converts the direct current of the PV array togrid-compliant alternating current and feeds it into the utility grid.The product is suitable for indoor and outdoor use.The product must only be operated with PV arrays (PV modules and cabling) that are approved bythe electrical standards applicable on-site and the National Electrical Code® ANSI/NFPA 70 orthe Canadian Electrical Code® CSA C22.1.

No galvanic isolationThe product is not equipped with a transformer and therefore has no galvanic isolation.

• Do not operate grounded PV modules together with the product. If grounded PV modulesare connected to the product, an event will occur which will appear on the productdisplay. The event will also be displayed, along with the associated message, in the eventlist on the user interface of the product.

• Only ground the mounting frames of the PV modules.• The neutral conductor of the AC output is not bonded to ground within the product.• The neutral conductor of the AC output for secure power supply operation is bonded to

ground within the product.

PV modules with a high capacity to ground may only be used if their coupling capacity does notexceed 2.5 μF.To protect the PV system against excessive reverse currents under fault conditions, a DC-sideovercurrent protective device must be connected in accordance with the National Electrical Code®

to prevent any short-circuit currents that exceed the ampacity of the DC electric circuit or themaximum series fuse rating of the PV modules. Typically, this requires string fusing where more thantwo strings are combined in parallel. Where an overcurrent protection device is required, theNational Electrical Code® requires that both positive and negative conductors have overcurrentprotection for ungrounded PV modules.All components must remain within their permitted operating ranges and their installationrequirements at all times.The product is approved for the US and Canadian market.Use this product only in accordance with the information provided in the enclosed documentationand with the locally applicable standards and directives. Any other application may causepersonal injury or property damage.Alterations to the product, e.g. changes or modifications, are only permitted with the express writtenpermission of SMA. Unauthorized alterations will void guarantee and warranty claims and in mostcases terminate the operating license. SMA shall not be held liable for any damage caused bysuch changes.Any use of the product other than that described in the Intended Use section does not qualify as theintended use.

2 SafetySMA Solar Technology America LLC


The enclosed documentation is an integral part of this product. Keep the documentation in aconvenient place for future reference and observe all instructions contained therein.The type label must remain permanently attached to the product.

2.2 IMPORTANT SAFETY INSTRUCTIONSSAVE THESE INSTRUCTIONSThis section contains safety information that must be observed at all times when working on or withthe product.The product has been designed and tested in accordance with international safety requirements. Aswith all electrical or electronical devices, there are residual risks despite careful construction. Toprevent personal injury and property damage and to ensure long-term operation of the product,read this section carefully and observe all safety information at all times.

DANGERDanger to life due to electric shock when live components or DC conductorsare touchedWhen exposed to sunlight, the PV array generates dangerous DC voltage which is present in theDC conductors and the live components of the inverter. Touching live DC conductors results indeath or lethal injuries due to electric shock.

• Disconnect the product from voltage sources and make sure it cannot be reconnectedbefore working on the device.

• Do not touch non-insulated parts or cables.• Do not remove the terminal block with the connected DC conductors from the slot under

load.• Wear suitable personal protective equipment for all work on the product.

DANGERDanger to life due to electric shock when touching live system components incase of a ground faultIf a ground fault occurs, parts of the system may still be live. Touching live parts and cablesresults in death or lethal injuries due to electric shock.


• Touch the cables of the PV array on the insulation only.• Do not touch any parts of the substructure or frame of the PV array.• Do not connect PV strings with ground faults to the inverter.• Ensure that no voltage is present and wait five minutes before touching any parts of the PV

system or the product.

2 Safety SMA Solar Technology America LLC


CAUTIONRisk of burns from hot surfacesThe surface of the inverter can get very hot. Touching the surface can result in burns.

• Mount the inverter in such a way that it cannot be touched inadvertently.• Do not touch hot surfaces.• Wait 30 minutes for the surface to cool sufficiently.• Observe the safety messages on the inverter.

NOTICEDamage to the enclosure seal in subfreezing conditionsIf you open the product when temperatures are below freezing, the enclosure seals can bedamaged. Moisture can penetrate the product then.

• Only open the product if the ambient temperature is not below 0°C (32°F).• If a layer of ice has formed on the enclosure seal when temperatures are below freezing,

remove it prior to opening the product (e.g. by melting the ice with warm air). Observe theapplicable safety regulations.

NOTICEDamage to the product due to sand, dust and moisture ingressSand, dust and moisture penetration can damage the product and impair its functionality.

• Only open the product if the humidity is within the thresholds and the environment is free ofsand and dust.

• Do not open the product during a dust storm or precipitation.• Close tightly all enclosure openings.• Only use listed rain-tight or liquid-tight conduit fittings to attach the conduits to the product.

NOTICEDamage due to cleaning agentsThe use of cleaning agents may cause damage to the product and its components.

• Clean the product and all its components only with a cloth moistened with clear water.

NOTICEDamage to the inverter due to electrostatic dischargeTouching electronic components can cause damage to or destroy the inverter throughelectrostatic discharge.

• Ground yourself before touching any component.

2 SafetySMA Solar Technology America LLC


Electrical installations (for North America)All installations must conform with the laws, regulations, codes and standards applicable in thejurisdiction of installation (e.g. National Electrical Code® ANSI/NFPA 70 or CanadianElectrical Code® CSA-C22.2.).

• Before connecting the inverter to the utility grid, contact your local grid operator. Theelectrical connection of the inverter must be carried out by qualified persons only.

• Ensure that the cables or conductors used for electrical connection are not damaged.

3 Product Overview SMA Solar Technology America LLC


3 Product Overview

3.1 Product Description

G

K

ISUNNY BOY

H

J

B

E

C

SUNNY BOY

A

D

F

Figure 1: Design of the inverter

Position DesignationA Power Unit

B Enclosure lid of the Power Unit

C Enclosure lid for the Connection Unit

D Connection Unit

E Warning label with compliance information

F DC load-break switch

G Type labelThe type label clearly identifies the product. The type label must remainpermanently attached to the product. You will find the following informa-tion on the type label:

• Device type (Model)• Serial number (Serial No. or S/N)• Date of manufacture• Device-specific characteristics

H Fan (only with Sunny Boy 7.0 and 7.7)

3 Product OverviewSMA Solar Technology America LLC


Position DesignationI Additional type label

The additional type label must remain permanently attached to the prod-uct. You will find the following information on the additional type label:

• Identification key (PIC) for registration in Sunny Portal• Registration ID (RID) for registration in Sunny Portal• WLAN password (WPA2-PSK) for the direct connection to the user

interface of the inverter via WLAN

J DisplayThe display shows the current operating data and events or errors.

K LEDsThe LEDs indicate the operating state of the inverter.

3.2 Symbols on the ProductSymbol Explanation

Beware of electrical voltageThe product operates at high voltages.

Beware of hot surfaceThe product can get hot during operation.

Observe the documentationObserve all documentation supplied with the product.

Observe the documentationTogether with the red LED, this symbol indicates an error.

InverterTogether with the green LED, this symbol indicates the operating state of the in-verter.

Data transmissionTogether with the blue LED, this symbol indicates the status of the network con-nection.



Symbol ExplanationEquipment Grounding TerminalThis symbol indicates the position for the connection of an equipment ground-ing conductor.

UL 1741 und CSA C22.2 No. 107.1 are the standards applied by Underwrit-ers Laboratories to the product to certify that it meets the requirements of theNational Electrical Code®, the Canadian Electrical Code® and IEEE 1547.

3.3 Interfaces and FunctionsThe inverter can be equipped or retrofitted with the following interfaces and functions:

User interface for monitoring and configurationThe product is equipped as standard with an integrated webserver, which provides a user interfacefor configuring and monitoring the product. The product user interface can be called up via the webbrowser if there is an existing connection to an end device (e.g. computer, tablet PC orsmartphone).

SMA SpeedwireThe product is equipped with SMA Speedwire as standard. SMA Speedwire is a type ofcommunication based on the Ethernet standard. SMA Speedwire is designed for a data transferrate of 100 Mbps and enables optimum communication between Speedwire devices withinsystems.Class 1 wiring methods are to be used for field wiring connection to the terminals of thecommunication interface.

SMA WebconnectThe inverter is equipped with a Webconnect function as standard. The Webconnect functionenables direct data transmission between the inverters of a small-scale plant and the Internet portalsSunny Portal and Sunny Places without any additional communication device and for a maximumof 4 inverters per visualized system. In large-scale PV power plants with more than 4 inverters, thereis the option of establishing data transmission between the inverters and the web-based monitoringplatform Sunny Portal and Sunny Places via the data logger (e.g. SMA Data Manager) or todistribute the inverters over several plants. You can directly access your visualized system via theweb browser on your end device.

WLANThe product is equipped with a WLAN interface as standard. The inverter is delivered with theWLAN interface activated as standard. If you do not want to use WLAN, you can deactivate theWLAN interface.In addition, the product has a WPS function. The WPS function is for automatically connecting theproduct to a network (e.g. via router) and establish a direct connection between the product andan end device.



Expanding the radio range in the WLAN networkIn order to expand the radio range of the inverter in the WLAN network, you can install theAntenna Extension Kit accessory set in the inverter.

ModbusThe product is equipped with a Modbus interface. The Modbus interface is deactivated by defaultand must be configured as needed.The Modbus interface of the supported SMA products is designed for industrial use – via SCADAsystems, for example – and has the following tasks:

• Remote query of measured values• Remote setting of operating parameters• Setpoint specifications for system control

Module slotsThe inverter is standard-equipped with two module slots. The module slots are located on thecommunication assembly and allow additional modules to be connected (e.g. SMA SensorModule). The modules are available as accessories. The installation of two identical modules is notpermissible.

SMA RS485 ModuleThe inverter can be retrofitted with the SMA RS485 Module.By installing the SMA RS485 Module, the inverter is able to communicate with the energy meter ofthe SMA Revenue Grade Meter Kit.Class 1 wiring methods are to be used for field wiring connection to the terminals of thecommunication interface.

Antenna Extension KitWithin the WLAN network, the Antenna Extension Kit enables the radio range of the inverter to beupgraded (Information on assembly and connection see manual of the Antenna Extension Kit). TheAntenna Extension Kit can be retrofitted.

SMA Cellular LTE Modem KitThe inverter type "SBx.x-1SP-US-40" can be retrofitted with the SMA Cellular LTE Modem Kit. Theinverter type "SBx.x-1TP-US-40" is equipped with SMA Cellular LTE Modem Kit as standard.The SMA Cellular LTE Modem Kit allows the direct data transmission between the inverter and theinternet portal Sunny Portal via the cellular network as an alternative to data transmission viaEthernet or WLAN. In addition, the SMA Cellular LTE Modem Kit enables the communicationbetween the inverter and the energy meter.The SMA Cellular LTE Modem Kit transmits up to four times a day a limited amount of data toSunny Portal. The standard term of the mobile data plan for the SMA Cellular LTE Modem Kit is fiveyears. All costs are covered within the term. No additional costs will be incurred. You have thepossibility to extend the term of the mobile data plan. For this purpose, contact SMA. By using theSMA Cellular LTE Modem Kits, a local network connection is not absolutely necessary. However, itis recommended to be able to view all information regarding the system in Sunny Portal.



Energy meters in accordance with ANSI C12.20The inverter type "SBx.x-1SP-US-40" can be retrofitted with the SMA Revenue Grade Meter Kit thatin accordance with ANSI C12.20 includes an energy meter. The inverter must be equipped eitherwith the SMA Cellular LTE Modem Kit or SMA RS485 Module to operate the SMA Revenue GradeMeter Kit. The inverter type "SBx.x-1TP-US-40" is equipped with an energy meter as standard.The energy meter fulfills the accuracy class 0.5 in accordance with ANSI C12.20. The energymeter is a so called PV production meter intended to measure the generated energy of the inverter.The measured values of the energy meter can be used for billing purposes.

Grid Management ServicesThe inverter is a grid support interactive inverter.The inverter was tested in accordance with the UL 1741 SA (2016-09-07) to be compliant with thesource requirements documents of the states available at the time. For connecting the inverter to theutility grid, no additional grid monitoring equipment is necessary. A description of the testedfunctions and instructions on the activation and setting of functions can be found in the technicalinformation "Grid Support Utility Interactive Inverters" at www.SMA-Solar.com.

PV Rapid Shutdown System EquipmentThe inverter is a PV Rapid Shutdown System Equipment and performs the function of voltagereduction according to UL 1741 CRD PV Rapid Shutdown Systems 2015. When a rapid shutdownis triggered by disconnecting the utility grid, the inverter discharges independently on the AC side to≤ 30 V within 30 seconds.If a disconnection device is used in addition between the inverter and the PV array that disconnectsthe PV array in the case of a rapid shutdown, the inverter discharges independently on the DC sideto ≤ 30 V within 30 seconds.The electric discharge on the DC side is deactivated by default and must be activated manuallyafter commissioning of the inverter via the user interface.

NOTICE - The Rapid Shutdown is tripped when opening the AC Disconnect. The AC Disconnectmust be clearly identified as Rapid Shutdown Initiator in accordance with National ElectricalCode®. The status of the Rapid Shutdown System is indicated depending on the On/Off position ofthe AC Disconnect.

Parallel Operation of the DC Inputs A and BThe DC inputs A and B of the inverter can be operated in parallel and up to three strings can beconnected to it in parallel. As a result, as opposed to normal operation, up to three strings can beconnected directly to inverters with two DC inputs and up to four strings to inverters with three DCinputs. The inverter automatically detects the parallel operation of the DC inputs A and B.

Secure power supply operationYou can connect an external outlet and a switch to the inverter in order to activate the outlet. Incase of a grid failure, the outlet supplies a load with current from the PV system. When the outlet isactivated via the switch, the load is supplied with current from the PV system. The inverterautomatically regulates the energy supply of the outlet depending on the solar irradiation on the PVsystem. When the outlet is activated and a load is supplied with current from the PV system, theinverter is disconnected from the utility grid and does not feed into the utility grid.




If the available accessory communication set for TS4-R module technology components(SMA Rooftop Communication Kit) is installed in the inverter, the secure power supply operation isno longer available. The Rooftop Communication Kit supports the Rapid Shutdown function. The ACcircuit breaker in the system is simultaneously the Rapid Shutdown initiator. In the event of a gridfailure or when operating the Rapid Shutdown initiator, the inverter is also disconnected fromvoltage sources on the DC side. Thus the supply of the outlet for secure power supply operationcan no longer be guaranteed.

Do not connect loads that require a stable electricity supply to the outlet forsecure power supply operationSecure power supply operation must not be used for loads that require a stable electricitysupply. The power available during secure power supply operation depends on the solarirradiation on the PV system. Therefore, power output can fluctuate considerably dependingon the weather or may not be available at all.

• Do not connect loads to the outlet for secure power supply operation if they aredependent on a stable electricity supply for reliable operation.

SMA Sensor ModuleThe SMA Sensor Module has different interfaces for connecting various sensors (i.e. temperaturesensor, irradiation sensor, anemometer or energy meter). The SMA Sensor Module converts thesignals of the connected sensors and transmits them to the inverter. The SMA Sensor Module canbe retrofitted.

Multifunction RelayThe inverter is equipped with a multifunction relay as standard. The multifunction relay is aninterface that can be configured for the operating mode used by a particular system.

String-failure detectionThe self-learning string failure detection identifies to which of the three inverter DC inputs the stringsare connected. The self-learning string failure detection identifies if the connected string isinoperable and is no longer contributing to the energy yield (e.g. due to damages such as a cablebreak) and monitors the input to which the defective string is connected. If the error persists, anevent will be reported at the latest one day after the detection of the defective string. This preventspartial failures of the PV array from being undetected for a long time and which will result in yieldlosses. The self-learning string failure detections automatically identifies if a string has been repairedand resets the event. If the defective string should no longer be connected, the event must be resetmanually.

Arc-Fault Circuit Interrupter (AFCI)In accordance with the National Electrical Code®, the inverter has a system for arc fault detectionand interruption.An electric arc with a power of 300 W or greater must be interrupted by the AFCI in the timespecified by UL 1699B. A detected electric arc causes the inverter to interrupt feed-in operation. Inorder to restart feed-in operation, the feed-in operation must be activated manually. If theinstallation conditions allow it, you can deactivate the arc-fault circuit interrupter.



3.4 LED SignalsThe LEDs indicate the operating state of the inverter.

LED signal ExplanationThe green LED is flashing(two seconds on andtwo seconds off)

Waiting for feed-in conditionsThe conditions for feed-in operation are not yet met. As soon as theconditions are met, the inverter will start feed-in operation.

The green LED is flashing:1.5 s on and 0.5 s off

Secure power supply operationThe secure power supply operation is activated and the inverter sup-plies the outlet with current from the PV system.

The green LED flashesquickly

Update of central processing unitThe central processing unit of the inverter is being updated.

The green LED is glowing Feed-in operationThe inverter feeds in with a power of at least 90%.

The green LED is pulsing Feed-in operationThe inverter is equipped with a dynamic power display via the greenLED. Depending on the power, the green LED pulses fast or slow. Ifnecessary, you can switch off the dynamic power display via thegreen LED.

The green LED is off The inverter is not feeding into the utility grid.

The red LED is glowing Event occurredIn addition to the glowing red LED, the display indicates the follow-ing information about the event:

• Event type• Event number• Date and time at which the event occurred

The blue LED flashes slowlyfor approx. one minute

Communication connection is being establishedThe inverter is establishing a connection to a local network or is es-tablishing a direct connection to an end device via Ethernet (e.g.computer, tablet PC or smartphone).

The blue LED flashes quicklyfor approx. two minutes.

WPS activeThe WPS function is active.

The blue LED is glowing Communication activeThere is an active connection with a local network or there is a di-rect connection with an end device via Ethernet (e.g. computer,tablet PC or smartphone).



3.5 Display messagesDisplay message ExplanationPackage Installed firmware version and configured country data set

Ser Product serial number

HW Hardware version of the product

FW-HP Firmware version of the central processing unit

FW-KP Firmware version of the communication processor

Ethcom A Status of the network port A

Ethcom B Status of the network port B

E-IP Ethernet IP address of the product

SMsk Subnet mask of the product

GW Gateway address of the product

DNS IP address of the domain name server

Wlancom Status of the WLAN connection

W-IP WLAN IP address of the product

DC A Status of the DC input A

DC B Status of the DC input B

DC C Status of the DC input C

AC12 Voltage / current between the line conductors L1 and L2



SPS-mode active The secure power supply operation is active.

P: Overload Overload at the input for secure power supply operation

Update status Firmware update information

Error An event has occurred.

P Instantaneous output power

E-Total Total produced energy

Pmax Maximum output power

cos phi Displacement power factor

Update File(s) found New firmware version available

Update progress Update is being performed

4 Operation SMA Solar Technology America LLC


4 Operation

4.1 Establishing a connection to the user interface

4.1.1 Establishing a Direct Connection via EthernetRequirements:

☐ The product must be commissioned.☐ An end device (e.g. computer) with an Ethernet interface must be available.☐ The product must be connected directly to the end device.☐ The respective latest version of one of the following web browsers must be installed: Chrome,

Edge, Firefox, Internet Explorer or Safari.☐ The SMA Grid Guard code of the Installer must be available for the changing of grid-relevant

settings after completion of the first ten feed-in hours or installation assistant (see "Applicationfor SMA Grid Guard Code" at www.SMA-Solar.com).

Procedure:1. Tap on the enclosure lid of the Connection Unit and continue to switch up to the message E-IP:

169.254.xxx.xxx.2. Read off the displayed IP address for the direct connection via Ethernet and either remember it

or write it down.3. Open the web browser of your device, enter the IP address in the address line of the web

browser and press the enter key.4. Web browser signals a security vulnerability

After the IP address has been confirmed by pressing the enter key, a message mightappear indicating that the connection to the user interface of the inverter is not secure.SMA guarantees that calling up the user interface is secure.

• Continue loading the user interface.☑ The login page of the user interface opens.

4.1.2 Establishing a direct connection via WLANRequirements:

☐ The product must be commissioned.☐ An end device (e.g. computer, tablet PC or smartphone) must be available.☐ The respective latest version of one of the following web browsers must be installed: Chrome,

Edge, Firefox, Internet Explorer or Safari.☐ JavaScript must be enabled in the web browser of the end device.☐ The SMA Grid Guard code of the Installer must be available for the changing of grid-relevant


http://www.sma-solar.com/


4 OperationSMA Solar Technology America LLC


SSID, IP address and necessary passwords• SSID in WLAN: SMA[serial number] (e.g. SMA0123456789)• Standard WLAN password (usable until completion of the configuration by means of the

installation assistant or prior to the end of the first ten feed-in hours): SMA12345• Device-specific WLAN password (usable for initial configuration to completion of the first

ten feed-in hours): see WPA2-PSK on the type label of the inverter or on the back of themanual included in the delivery

• Standard IP address for a direct connection via WLAN outside of a local network:192.168.12.3

Importing and exporting files with end devices having an iOS operatingsystem is not possible.For technical reasons, importing and exporting files (e.g. importing an inverter configuration,saving the current inverter configuration or exporting events) is not possible with mobile enddevices having an iOS operating system.

• Use an end device that does not have an iOS operating system for importing andexporting files.

The procedure can be different depending on the end devices. If the procedure described does notapply to your end device, establish the direct connection via WLAN as described in the manual ofyour end device.

Procedure:1. If your end device has a WPS function:

• Activate the WPS function on the inverter. To do this, tap twice on the enclosure lid of theConnection Unit.

☑ The blue LED flashes quickly for approx. two minutes. The WPS function is activeduring this time.

• Activate the WPS on your end device.☑ The connection with your end device will be established automatically. It can take

up to 20 seconds for this connection to be established.2. If your end device has not a WPS function:

• Search for WLAN networks with your end device.• Select the SSID of the inverter SMA[serial number] in the list with the found WLAN

networks.• Enter the inverter WLAN password. Within the first ten feed-in hours and prior to

completing the configuration by means of the installation assistant, you must use thestandard WLAN password SMA12345. After the first ten feed-in hours or aftercompleting the configuration by means of the installation assistant, you must use thedevice-specific WLAN password (WPA2-PSK) of the inverter. You find the WLANpassword (WPA2-PSK) on the type label.

3. Enter the IP address 192.168.12.3 or, if your device supports mDNS services, SMA[serialnumber].local or https://SMA[serial number] in the address bar of the web browser andpress the enter key.



4. Web browser signals a security vulnerabilityAfter the IP address has been confirmed by pressing the enter key, a message mightappear indicating that the connection to the user interface of the inverter is not secure.SMA guarantees that calling up the user interface is secure.


4.1.3 Establishing a Connection via Ethernet in the localnetwork

New IP address for connecting with a local networkIf the product is connected to a local network (e.g. via a router), the product will receive a newIP address. Depending on the type of configuration, the new IP address will be assignedautomatically by the DHCP server (router) or manually by you. Upon completion of theconfiguration, the product can only be reached via the following access addresses:

• Generally applicable access address: IP address manually assigned or assigned by theDHCP server (router) (identification via network scanner software or networkconfiguration of the router).

• Access address for Apple and Linux systems: SMA[serial number].local (e.g.SMA0123456789.local)

• Access address for Windows and Android systems: https://SMA[serial number] (e.g.https://SMA0123456789)

Requirements:☐ The product must be connected to the local network via a network cable (e.g. via a router).☐ The product must be integrated into the local network. Tip: There are various methods of

integrating the product into the local network with the aid of the installation assistant.☐ An end device (e.g. computer, tablet PC or smartphone) must be available.☐ The end device must be in the same local network as the product.☐ The respective latest version of one of the following web browsers must be installed: Chrome,



Procedure:1. Open the web browser of your end device, enter the IP address of the inverter in the address

line of the web browser and press the enter key.




2. Web browser signals a security vulnerabilityAfter the IP address has been confirmed by pressing the enter key, a message mightappear indicating that the connection to the user interface of the inverter is not secure.SMA guarantees that calling up the user interface is secure.


4.1.4 Establishing a Connection via WLAN in the Local NetworkNew IP address for connecting with a local networkIf the product is connected to a local network (e.g. via a router), the product will receive a newIP address. Depending on the type of configuration, the new IP address will be assignedautomatically by the DHCP server (router) or manually by you. Upon completion of theconfiguration, the product can only be reached via the following access addresses:

• Generally applicable access address: IP address manually assigned or assigned by theDHCP server (router) (identification via network scanner software or networkconfiguration of the router).

• Access address for Apple and Linux systems: SMA[serial number].local (e.g.SMA0123456789.local)

• Access address for Windows and Android systems: https://SMA[serial number] (e.g.https://SMA0123456789)

Requirements:☐ The product must be commissioned.☐ The product must be integrated into the local network. Tip: There are various methods of

integrating the product into the local network with the aid of the installation assistant.☐ The end device must be in the same local network as the product.☐ An end device (e.g. computer, tablet PC or smartphone) must be available.☐ JavaScript must be enabled in the web browser of the end device.☐ The respective latest version of one of the following web browsers must be installed: Chrome,



Importing and exporting files with end devices having an iOS operatingsystem is not possible.For technical reasons, importing and exporting files (e.g. importing an inverter configuration,saving the current inverter configuration or exporting events) is not possible with mobile enddevices having an iOS operating system.

• Use an end device that does not have an iOS operating system for importing andexporting files.




Procedure:1. Enter the IP address of the inverter in the address bar of the web browser.2. Web browser signals a security vulnerability

After the IP address has been confirmed by pressing the enter key, a message mightappear indicating that the connection to the user interface of the inverter is not secure.SMA guarantees that calling up the user interface is secure.


4.2 Logging In and Out of the User InterfaceAfter a connection to the user interface of the inverter has been established, the login page opens.Log onto the user interface as described below.

Usage of cookiesFor the correct display of the user interface, cookies are required. The cookies are used forconvenience only. By using this user interface you agree to the placement of cookies.

Log in as Installer or User for the First Time

Procedure:1. In the drop-down list Language, select the desired language.2. In the User group drop-down list, select the entry Installer or User.3. In the New password field, enter a new password for the selected user group.4. In the Repeat password field, enter the new password again.5. Select Login.

☑ The Configuring the Inverter page opens.

Log in as the User or Installer1. In the drop-down list Language, select the desired language.2. In the User group drop-down list, select the entry Installer or User.3. Enter the password in the field Password.4. Select Login.

☑ The start page of the user interface opens.

Log Out as the User or Installer1. On the right-hand side of the menu bar, select the menu User Settings.2. In the subsequent context menu, select [Logout].

☑ The login page of the user interface opens. The logout was successful.

4.3 Activating and Operating the DisplayYou can activate and operate the display by tapping on the enclosure lid of the Connection Unit.



Procedure:1. Activate the display. Tap on the enclosure lid of the Connection Unit once.

☑ The backlight is switched on.2. To move to the next message, tap on the enclosure lid of the Connection Unit once.



4.4 Start Page Design of the User InterfaceA B C

E

F

D

Figure 2: Start page design of the user interface (example)



Posi-tion

Designation Description

A Menu Provides the following functions:• Home

Opens the user interface homepage• Instantaneous values

Current measured values of the inverter• Device Parameters

The various operating parameters of the inverter can be viewed andconfigured here depending on the user group.

• EventsAll events that have occurred in the selected time period aredisplayed here. The event types are Information, Warning andError. Currently existing events of the types Error and Warningwill be additionally displayed in the Device status viewlet.However, only the higher-priority event is displayed. If, for example,there is a Warning and an Error present at the same time, only theError will be displayed.

• Device configurationVarious settings for the inverter can be made here. The selectionavailable is dependent on which user group you are logged in asand the operating system of the device with which the user interfacehas been called up.

• DataYou will find all data that is saved in the internal memory of theinverter or on an external storage medium on this page.

B User settings Provides the following functions, depending on the user group logged in:• Starting the installation assistant• SMA Grid Guard login• Logout

C Help Provides the following functions:• Displaying information on Open Source licenses used• Link to the website of SMA



Posi-tion

Designation Description

D Status bar Displays the following information:• Inverter serial number• Inverter firmware version• IP address of the inverter within the local network and/or IP address

of the inverter during WLAN connection• With WLAN connection: Signal strength of WLAN connection• User group logged in• Date and device time of the inverter

E Currentpower andcurrent con-sumption

Temporal progression of the PV power and the power consumption of thehousehold over the selected time period. Please note, the power con-sumption will only be displayed if an energy meter is installed in the PVsystem.

F Status dis-play

The various areas display information on the current status of the PV sys-tem.

• Device statusDisplays whether the inverter is currently in a fault-free operatingstate or whether there is an Error or Warning present.

• Current powerDisplays the power currently being generated by the inverter.

• Current consumptionDisplays the current consumption of the household if an energymeter is installed in the PV system.

• YieldDisplays the energy yield of the inverter.

• ConsumptionDisplays the energy consumption of the household if an energymeter is installed in the PV system.

• Feed-in managementDisplays whether the inverter is currently limiting its active power.

• Irradiation / wind speedDepending on the connected sensors, displays the current solarirradiation and/or wind speed.

• Temperature measurementDepending on the connected sensors, displays the currenttemperature of the PV modules and/or the ambient temperature.

4.5 Displaying and Downloading the Stored DataIf an external storage device is plugged in, you can display and download the stored data.



Procedure:1. Activate the user interface (see Section 4.1, page 20).2. Log into the user interface (see Section 4.2, page 24).3. Select the menu Data.4. Select the folder Data.5. To call up the data, select the respective folder and click on the required file.6. To download the data, select the data type to be exported in the drop-down list. Then apply

the time filter and select Data export.

4.6 Starting the Installation Assistant

The installation assistant leads you step-by-step through the steps necessary for the initialconfiguration of the inverter.

Layout of the installation assistant

A

C B

Figure 3: Layout of the installation assistant (example)

Position Designation DescriptionA Configuration steps Overview of the installation assistant steps. The number of

steps depends on the type of device and the additionallyinstalled modules. The current step is highlighted in blue.

B User information Information about the current configuration step and thesetting options of the configuration step.

C Configuration field You can make settings in this field.



Requirement:☐ When configuring after completion of the first ten feed-in hours or after exiting the installation

assistant, the SMA Grid Guard code must be available in order to change the grid-relevantparameters (see "Application for SMA Grid Guard Code" at www.SMA-Solar.com).

Procedure:1. Activate the user interface (see Section 4.1, page 20).2. Log in as Installer.3. Select the menu User Settings (see Section 4.4, page 26) on the start page of the user

interface.4. In the context menu, select [Start the installation assistant].

☑ The installation assistant will open.

4.7 Secure Power Supply Operation

4.7.1 Activating Secure Power Supply OperationIf an outlet and a switch for secure power supply operation are connected to the inverter, you cansupply a load with current from the PV system in case of a grid failure during the day. If youactivate the secure power supply operation, the inverter supplies loads that are connected to theoutlet for secure power supply operation.In case of overload, underload or insufficient solar irradiation, the voltage supply of the outlet isbriefly interrupted. The inverter automatically attempts to reestablish the voltage supply 20 secondsafter the interruption. This can lead to inadvertent starting of the load that is connected to the outlet.Ensure that the load connected to the outlet does not consume too much power. If necessary,reduce the power consumption of the load.

In case of a grid failure during the night, secure power supply operation isnot possibleDuring the night, secure power supply operation cannot be activated since the PV system doesnot produce power that is required to supply the load.

• In case of a grid failure during the night, do not activate secure power supply operation.• Continue to operate the inverter on the utility grid and wait for restoration of grid

operation.• In the event of a persistent grid failure, switch to secure power supply operation after

sunrise.

Do not connect loads that require a stable electricity supply to the outlet forsecure power supply operationSecure power supply operation must not be used for loads that require a stable electricitysupply. The power available during secure power supply operation depends on the solarirradiation on the PV system. Therefore, power output can fluctuate considerably dependingon the weather or may not be available at all.

• Do not connect loads to the outlet for secure power supply operation if they aredependent on a stable electricity supply for reliable operation.




Procedure:1. If no load is connected to the outlet, connect a load.2. Turn the switch of the outlet to secure power supply operation.3. Wait one minute.

☑ The inverter commences secure power supply operation. As soon as the inverter supplies theoutlet with power, the green LED flashes (1.5 s on and 0.5 s off) and the message SPS-modeactive is shown in the display along with the amount of power being supplied from theinverter to the outlet. In addition, the control light of the outlet for secure power supplyoperation glows.

✖ The green LED does not flash and no message that the secure power supply operation mode isactivated appears on the display or the control lamp of the outlet does not glow?The output power of the PV system is too low. Irradiation on the PV system is probably too lowor the connected load requires more power than currently available.

• Ensure that the outlet's switch is set to secure power supply operation.• If irradiation is too low, wait for it to increase.• Connect a load with lower power consumption to the outlet.

✖ No voltage can be measured at the outlet?• Ensure that the outlet's switch is set to secure power supply operation.• Ensure that the switch, outlet and control light for secure power supply operation are

correctly connected.

4.7.2 Deactivating Secure Power Supply Operation1. If necessary, disconnect the load from the outlet.2. Turn the switch of the outlet to grid operation.

☑ Grid operation is activated.3. Switch on the circuit breaker of the PV system.

☑ The inverter connects to the utility grid and starts feed-in operation.

4.8 Activate WPS FunctionThe WPS function can be used for different purposes:

• Automatic connection to a network (e.g. via router)• Direct connection between the product and an end device

Depending on the intended application of the WPS function, the procedure for activation will vary.

Activating WPS function for automatic connection to a networkRequirements:

☐ WLAN must be activated in the product.☐ WPS must be activated on the router.

Procedure:1. Activate the user interface (see Section 4.1, page 20).



2. Log in as Installer.3. Start the installation assistant (see Section 4.6, page 29).4. Select Network configuration.5. Select WPS for WLAN network button in the WLAN tab.6. Select Activate WPS.7. Select Save and next and exit the installation assistant.

☑ The WPS function is activated and the automatic connection to the network can beestablished.

Activating the WPS function for direct connection to the end device.• Activate the WPS function on the inverter. To do this, tap twice on the enclosure lid of the

Connection Unit.☑ The blue LED flashes quickly for approx. two minutes. The WPS function is active during

this time.

4.9 Switching WLAN On and OffThe inverter is equipped with an activated WLAN interface as standard. If you do not want to useWLAN, you can switch the WLAN function off and switch it on again whenever needed. In doingso, you can switch the WLAN direct connection and the WLAN connection in the local network onindependently of each other.

Switching on the WLAN function only possible via Ethernet connectionIf you switch off both the WLAN function for the direct connection and for the connection inthe local network, access to the inverter user interface and therefore reactivation of the WLANinterface is only possible via an Ethernet connection.

The basic procedure for changing operating parameters is explained in another section (seeSection 4.12 "Changing Operating Parameters", page 34).

Switching WLAN OffIf you would like to switch the WLAN function off completely, you must switch off both the directconnection and the connection in the local network.

Procedure:• To switch off the direct connection in the parameter group PV system communication >

WLAN, select the parameter Soft-access-point is turned on and set this to No.• To switch off the connection in the local network in the parameter group PV system

communication > WLAN, select the parameter WLAN is turned on and set this to No.

Switching WLAN OnIf you have switched the WLAN function for direct connection or for connection in the local networkoff, you can switch the WLAN function back on in accordance with the following procedure.



Requirement:☐ If the WLAN function was previously switched off completely, the inverter must be connected

to a computer or router via Ethernet.

Procedure:• To switch on the WLAN direct connection, in the parameter group PV system

communication > WLAN, select the parameter Soft-access-point is turned on and set thisto Yes.

• To switch on the WLAN connection in the local network, in the parameter group Systemcommunication > WLAN, select the parameter WLAN is turned on and set this to Yes.

4.10 Switching the Dynamic Power Display OffAs standard, the inverter signals its power dynamically via the pulsing of the green LED. Whendoing so, the LED flashes on and off uniformly or is permanently lit at full power. The variousgradations are related here to the set active power limit of the inverter. If this display is not desired,switch this function off in accordance with the following procedure. Once this has been done, thegreen LED is lit permanently to signalize feed-in operation.The basic procedure for changing operating parameters is explained in another section (seeSection 4.12 "Changing Operating Parameters", page 34).

Procedure:• In the parameter group Device > Operation, select the parameter Dynamic power

display via green LED and set this to Off.

4.11 Changing the PasswordThe password for the inverter can be changed for both user groups. Furthermore, the user groupInstaller can change the password for the user group User as well as its own password.

PV systems registered in a communication productWith PV systems that are registered in a communication product (e.g. Sunny Portal,Cluster Controller), you can also assign a new password for the user group Installer via thecommunication product. The password for the user group Installer is also the systempassword. If you assign a password for the user group Installer via the user interface of theinverter that does not correspond to the system password in the communication product, theinverter can no longer be reached by the communication product.

• Ensure that the password for the user group Installer is the same as the system passwordin the communication product.

Procedure:1. Activate the user interface (see Section 4.1, page 20).2. Log into the user interface (see Section 4.2, page 24).3. Call up the menu Device Parameters.4. Select [Edit parameters].



5. In the parameter group User Rights > Access Control change the password of the desireduser group.

6. Select [Save all] to save the changes.

4.12 Changing Operating ParametersThe operating parameters of the inverter are set to certain values by default. You can change theoperating parameters to optimize the performance of the inverter.This section describes the basic procedure for changing operating parameters. Always changeoperating parameters as described in this section. Some function-sensitive parameters can only beviewed by qualified persons and can only be changed by qualified persons by entering thepersonal SMA Grid Guard code.

No configuration via Sunny ExplorerSunny Explorer does not support the configuration of inverters with their own user interface.The inverter can be detected via Sunny Explorer, however it is expressly not recommended touse Sunny Explorer to configure this inverter. SMA does not accept liability for missing orincorrect data and possibly resulting yield losses.

• Use the user interface for the configuration of the inverter.

Requirements:☐ The SMA Grid Guard code of the Installer must be available for the changing of grid-relevant


☐ Changes to grid-relevant parameters must be approved by the responsible grid operator.

Procedure:1. Activate the user interface (see Section 4.1, page 20).2. Log into the user interface (see Section 4.2, page 24).3. Call up the menu Device Parameters.4. Select [Edit parameters].5. Log in using the SMA Grid Guard code to change those parameters designated by a lock

(only for installers):• Select the menu User Settings (see Section 4.4, page 26).• In the subsequent context menu, select [SMA Grid Guard login].• Enter the SMA Grid Guard code and select [Login].

6. Expand the parameter group that contains the parameter which is to be configured.7. Change the desired parameters.8. Select [Save all] to save the changes.

☑ The inverter parameters are set.




Accepting the settingsSaving the made settings is indicated by an hourglass symbol on the user interface. If the DCvoltage is sufficient, the data is transferred directly to the inverter and accepted. If the DCvoltage is too low (e. g. in the evening), the settings are saved, but they cannot be directlytransferred to or accepted by the inverter. As long as the inverter has not yet received andaccepted the settings, the hourglass symbol will continue to be displayed on the user interface.The settings will be accepted when there is sufficient DC voltage applied and the inverterrestarts. As soon as the hourglass symbol appears on the user interface, the settings have beensaved. The settings will not be lost. You can log off of the user interface and leave the system.

4.13 Configuring the Country Data Set

As standard, the inverter is meant for connection to a utility grid with a 208 V wye connection or a240 V split-phase system, and the associated country data set UL1741/2016/120 is factory-set.If the default country data set does not correspond with the grid configuration, the country data setcan be adapted to the connected grid configuration.The basic procedure for changing operating parameters is explained in another section (seeSection 4.12 "Changing Operating Parameters", page 34).

Grid configuration Country data set208 V delta connection UL1741/2016/208

208 V wye connection UL1741/2016/120

240 V delta connection UL1741/2016/240

240 V split-phase system UL1741/2016/120

Procedure:• Select the parameter Set country standard and set the required country data set.

4.14 Activating of the Rapid Shutdown DC dischargefunction

The DC discharge function should be activated if an additional DC switch-disconnector between theinverter and the PV array is available. The additional DC switch-disconnector disconnects the PVarray in the case of a rapid shutdown.

Procedure:• Set the parameter Rapid Shutdown Mode or Op.RssOpMode to On.



4.15 Configuring the Modbus Function

The Modbus interface is deactivated by default and the communication ports 502 set.In order to access SMA invertes with SMA Modbus® or SunSpec® Modbus®, the Modbus interfacemust be activated. After activating the interface, the communication ports of both IP protocols canbe changed. For information on commissioning and configuration of the Modbus interface, see theTechnical Information "SMA Modbus® Interface" or in the Technical Information "SunSpec®Modbus® Interface" at www.SMA-Solar.com.For information on which Modbus registers are supported, see the Technical Descriptions "SMAModbus® Interface" or "SunSpec® Modbus® Interface" at www.SMA-Solar.com.

Data security during activated Modbus interfaceIf you activate the Modbus interface, there is a risk that unauthorized users may access andmanipulate the data or devices in your PV system.

• Take appropriate protective measures, such as:– Set up a firewall.– Close unnecessary network ports.– Only enable remote access via VPN tunnel.– Do not set up port forwarding at the communication port in use.– In order to deactivate the Modbus interface, reset the inverter to default settings or

deactivate the activated parameter again.

Procedure:• Activate the Modbus interface and adjust the communication ports if necessary (see the

technical information "SMA Modbus® Interface" or "SunSpec® Modbus® Interface" atwww.SMA-Solar.com).

4.16 Setting SMA OptiTrac Global Peak

For partially shaded PV modules, you should set the interval at which the inverter is to optimize theMPP of the PV system. If you do not want to use SMA OptiTrac Global Peak feature, you candeactivate the feature.The basic procedure for changing operating parameters is explained in another section (seeSection 4.12 "Changing Operating Parameters", page 34).

Procedure:• In the parameter group DC-side > DC settings > OptiTrac Global Peak, set the parameter

Cycle time of the OptiTrac Global Peak algorithm and set the required time interval. Theideal time interval is usually six minutes. This value should only be increased if the shadingsituation changes extremely slowly.

☑ The inverter optimizes the MPP of the PV system at the predetermined time interval.






• In order to deactivate the SMA OptiTrac Global Peak feature, in the parameter group DC-side > DC settings > OptiTrac Global Peak, set the parameter OptiTrac Global Peakswitched on to Off.

4.17 Deactivating the Arc-Fault Circuit Interrupter (AFCI)

The basic procedure for changing operating parameters is explained in another section (seeSection 4.12 "Changing Operating Parameters", page 34).

Procedure:• Select the parameter AFCI switched on or AfciIsOn and set to No.

4.18 Saving the Configuration in a FileYou can save the current configuration of the inverter in a file. You can use this file as a databackup for this inverter and then import this file into this inverter again or another inverter from thesame type or device family to configure the inverter. When saving, only the device parameters willbe saved, not any passwords.

Procedure:1. Activate the user interface (see Section 4.1, page 20).2. Log into the user interface (see Section 4.2, page 24).3. Select the menu Device Configuration.4. Select [Settings].5. In the context menu, select [Saving the configuration in a file].6. Follow the instructions in the dialog.

4.19 Adopting a Configuration from a File

To configure the inverter, you can adopt the configuration from a file. To be able to do this, youmust first save the configuration of another inverter from the same type or device family in a file (seeSection 4.18 "Saving the Configuration in a File", page 37). When saving, only the deviceparameters will be adopted, not any passwords.

Requirements:☐ The SMA Grid Guard code must be available (see "Application for SMA Grid Guard Code"

at www.SMA-Solar.com).☐ Changes to grid-relevant parameters must be approved by the responsible grid operator.

Procedure:1. Activate the user interface (see Section 4.1, page 20).2. Log into the user interface as an Installer.3. Select the menu Device Configuration.




4. Select [Settings].5. In the context menu, select [Adopting the configuration from a file].6. Follow the instructions in the dialog.

4.20 Updating the Firmware

If no automatic update is set in the communication product (e.g. Cluster Controller, Sunny Portal) orvia the user interface of the inverter, you have the option of carrying out a manual firmware update.There are two options to update the firmware:

• Update the firmware via the user interface of the inverter.• Update the firmware via USB flash drive.

Updating firmware via the user interface

Requirements:☐ An update file with the desired inverter firmware must be available. The update file is, for

example, available for download on the product page of the inverter at www.SMA-Solar.com.To download the update file, it is necessary to enter the serial number of the inverter.

Procedure:1. Activate the user interface (see Section 4.1, page 20).2. Log into the user interface (see Section 4.2, page 24).3. Select the menu Device Configuration.4. In the inverter row, click on the gear icon and select Update firmware.5. Select [Browse] and select the update file for the inverter.6. Select Update firmware.7. Follow the instructions in the dialog.

Updating the Firmware via USB Flash Drive

Requirement:☐ A USB flash drive with maximum 32 GB and file system FAT32 must be available.

Procedure:1. Create an "UPDATE" folder on the USB stick.2. Save the update file with the desired firmware in the "UPDATE" folder on the USB flash drive.

The update file is, for example, available for download on the product page of the inverter atwww.SMA-Solar.com. Make sure that only the update file to which the inverter is to beupdated must be saved on the USB flash drive.





3. DANGERDanger to life due to high voltages

• Disconnect the inverter from any voltage sources and open the enclosure lid of theConnection Unit (see the inverter installation manual).

4. Insert the USB flash drive in the USB port on the communication assembly.5. Commission the inverter (see inverter installation manual).

☑ During start-up phase of the inverter, the desired firmware is being installed. At the sametime, the status of the update is shown in the display: Update status: xxxxxxx

☑ Once the desired firmware has been installed in the inverter, the status successful isshown in the display.

6. If the message error occurred is shown in the display, perform the firmware update again.


• Disconnect the inverter from any voltage sources and open the enclosure lid of theConnection Unit (see the inverter installation manual).

8. Pull the USB flash drive out of the USB port.9. Commission the inverter (see inverter installation manual).

5 Cleaning the Inverter SMA Solar Technology America LLC


5 Cleaning the InverterNOTICE

Damage due to cleaning agentsThe use of cleaning agents may cause damage to the product and its components.

• Clean the product and all its components only with a cloth moistened with clear water.

• Ensure that the inverter is free of dust, foliage and other dirt.

6 TroubleshootingSMA Solar Technology America LLC


6 Troubleshooting

6.1 Forgotten PasswordIf you have forgotten the password for the inverter, you can unlock the inverter with a PersonalUnlocking Key (PUK). For each inverter, there is one PUK for each user group (User and Installer).Tip: With PV systems in Sunny Portal, you can also assign a new password via Sunny Portal for theuser group Installer. The password for the user group Installer is the same as the systempassword in Sunny Portal.

Procedure:1. Request PUK (application form available at www.SMA-Solar.com).2. Activate the user interface (see Section 4.1, page 20).3. Enter the PUK instead of the password into the field Password.4. Select Login.5. Call up the menu Device Parameters.6. Select [Edit parameters].7. In the parameter group User Rights > Access Control change the password of the desired

user group.8. Select [Save all] to save the changes.

PV Systems in Sunny PortalThe password for the user group Installer is also the system password for the PV system inSunny Portal. Changing the password of the user group Installer can lead to the inverter nolonger being able to be reached by Sunny Portal.

• Assign the changed password of the user group Installer as the new system password inSunny Portal (see the Sunny Portal user manual at www.SMA-Solar.com).



6 Troubleshooting SMA Solar Technology America LLC


6.2 Event MessagesEvent number Message, cause and corrective measures101 to 105

Grid faultThe grid voltage or grid impedance at the connection point of the inverter istoo high. The inverter has disconnected from the utility grid.Corrective measures:

• Ensure that the correct country data set has been configured (seeSection 4.13, page 35).

• Check whether the grid voltage at the connection point of the inverter ispermanently in the permissible range.If the grid voltage is outside the permissible range due to local gridconditions, contact the grid operator. The grid operator must agree withan adjustment of the voltage at the feed-in point or with a change of themonitored operating limits.If the grid voltage is permanently within the permissible range and thismessage is still displayed, contact the Service (see Section 8, page 67).

202 to 206

Grid faultThe utility grid has been disconnected, the AC cable is damaged or the gridvoltage at the connection point of the inverter is too low. The inverter has dis-connected from the utility grid.Corrective measures:

• Make sure that the circuit breaker is switched on.• Ensure that the AC cable is not damaged and that it is connected

correctly.• Ensure that the country data set has been configured correctly.• Check whether the grid voltage at the connection point of the inverter is

permanently in the permissible range.If the grid voltage is outside the permissible range due to local gridconditions, contact the grid operator. The grid operator must agree withan adjustment of the voltage at the feed-in point or with a change of themonitored operating limits.If the grid voltage is permanently within the permissible range and thismessage is still displayed, contact the Service (see Section 8, page 67).



Event number Message, cause and corrective measures401 to 404

Grid faultThe inverter has disconnected from the utility grid. A stand-alone grid or a verylarge change in the power frequency was detected.Corrective measures:

• Check the grid connection for significant short-term frequency fluctuations.

501

Grid faultThe power frequency is not within the permissible range. The inverter has dis-connected from the utility grid.Corrective measures:

• If possible, check the power frequency and observe how oftenfluctuations occur.If fluctuations occur frequently and this message is displayed often,contact the grid operator and request approval to change the operatingparameters of the inverter.If the grid operator gives his approval, discuss any changes to theoperating parameters with Service (see Section 8, page 67).

601

Grid faultThe inverter has detected an excessively high proportion of direct current inthe grid current.Corrective measures:

• Check the grid connection for direct current.• If this message is displayed frequently, contact the grid operator and

check whether the monitoring threshold on the inverter can be raised.



Event number Message, cause and corrective measures701

Frq. not permitted > Check parameterThe power frequency is not within the permissible range. The inverter has dis-connected from the utility grid.Corrective measures:

• If possible, check the power frequency and observe how oftenfluctuations occur.If fluctuations occur frequently and this message is displayed often,contact the grid operator and request approval to change the operatingparameters of the inverter.If the grid operator gives his approval, discuss any changes to theoperating parameters with Service (see Section 8, page 67).

1001

L/N swapped > Check connectionThe connection of L and N is swapped.Corrective measures:

• Ensure that L and N are correctly connected (see installation manual).

1302

Waiting for grid voltage > Installation failure grid connection > Checkgrid and fusesL or N not connected.Corrective measures:

• Ensure that L and N are connected (see installation manual).• Ensure that the AC conductors are not damaged and correctly connected

(see installation manual).• Make sure that the circuit breaker is switched on.

1501

Reconnection fault gridThe changed country data set or the value of a parameter you have set doesnot correspond to the local requirements. The inverter cannot connect to theutility grid.Corrective measures:

• Ensure that the country data set has been configured correctly. To do this,select the parameter Set country standard and check the value.



Event number Message, cause and corrective measures3301 to 3303

Unstable operationThere is not enough power at the DC input of the inverter for stable operation.The inverter cannot connect to the utility grid.Corrective measures:

• Ensure that the PV array is designed correctly.• Ensure that the PV array is not covered by snow or otherwise shaded.• Ensure that the PV array is free of errors.

3401 to 3407

DC overvoltage > Disconnect generatorOvervoltage at the DC input. This can destroy the inverter.This message is signalized additionally by rapid flashing of the LEDs.Corrective measures:

• Disconnect the inverter from voltage sources immediately (seeinstallation manual).

• Check whether the DC voltage is below the maximum input voltage ofthe inverter. If the DC voltage is below the maximum input voltage of theinverter, reconnect the terminal block with the connected DC conductorsto the inverter.

• If the DC voltage exceeds the maximum input voltage of the inverter,ensure that the PV array has been correctly rated or contact the installerof the PV array.

• If this message is repeated frequently, contact the Service (see Section 8,page 67).

3501

Insulation failure > Check generatorThe inverter has detected a ground fault in the PV array.Corrective measures:

• Check the PV system for ground faults (see Section 6.3, page 60).




High discharge curr. > Check generatorThe leakage current of the inverter and the PV array is too high. There is aground fault, a residual current or a malfunction.The inverter interrupts feed-in operation immediately after exceeding a thresh-old. When the fault is eliminated, the inverter automatically reconnects to theutility grid.Corrective measures:


3701

Resid.curr.too.high > Check generatorThe inverter has detected a residual current due to temporary grounding of thePV array.Corrective measures:


3801

DC overcurrent > Check generatorOvercurrent at the DC input. The inverter briefly interrupts feed-in operation.Corrective measures:

• If this message is displayed frequently, ensure that the PV array has beencorrectly rated and wired.

3901 to 3902

Waiting for DC start conditions > Start cond. not metThe feed-in conditions for the utility grid are not yet fulfilled.Corrective measures:

• Ensure that the PV array is not covered by snow or otherwise shaded.• Wait for higher irradiation.• If this message is displayed frequently in the morning, increase the

voltage limit for starting grid feed-in. Change the parameter Criticalvoltage to start feed-in.

• If this message is displayed frequently with medium irradiation, ensurethat the PV array is correctly rated.




Electric arc detected > Check DC generatorThe inverter has detected an electric arc. The inverter interrupts grid feed-inand cannot connect to the utility grid.Corrective measures:

• Resetting the operation inhibition after detection of an arc fault (seeSection 6.4, page 64).

6512 Minimum operating temperature not reachedThe inverter will only recommence grid feed-in once the temperature hasreached at least −25°C.

6701 to 6702

Communication disturbedError in the communication processor, the inverter continues feeding in, how-ever. The cause must be determined by the Service.Corrective measures:

• If this message is displayed frequently, contact the Service (see Section 8,page 67).

6803

Self-diagnosis > Input A defectiveThe cause must be determined by the Service.Corrective measures:

• Contact the Service (see Section 8, page 67).

6903

Self-diagnosis > Input B defectiveThe cause must be determined by the Service.Corrective measures:


7106 Update file defect.The update file is defective. The update failed. The inverter continues to feedin.

7110 No update file foundNo new update file was found on the SD memory card. The update failed.The inverter continues to feed in.

7112 Update file successfully copied

7113 The memory card is full or write-protected




Update main CPU failedThe cause must be determined by the Service.Corrective measures:


7324

Wait for update conditionsThe testing of the update conditions was not successful. The firmware updatepackage is not suitable for this inverter.Corrective measures:

• Retry update.• Ensure that the selected update file is suitable for this inverter.• If this message is displayed again, contact the Service (see Section 8,

page 67).

7331 Update transport startedUpdate file is being copied.

7332 Update transport successfulUpdate file was copied successfully to the inverter's internal memory.

7333

Update transport failedUpdate file could not be copied to the inverter's internal memory. In the eventof connection with the inverter via WLAN, a poor connection quality can bethe cause.Corrective measures:

• Retry update.• For WLAN connection, improve the WLAN connection quality (e.g. via

SMA Antenna Extension Kit) or establish connection with the inverter viaEthernet.

• If this message is displayed again, contact the Service (see Section 8,page 67).

7340 Update communication failed




Incompatible fileThe configuration file is not suitable for this inverter.Corrective measures:

• Ensure that the selected configuration file is suitable for this inverter.• Retry import.

7348

Incorrect file formatThe configuration file is not of the required format or is damaged.Corrective measures:

• Ensure that the selected configuration file is of the required format and isnot damaged.

• Retry import.

7350 Transfer of a configuration file has startedThe configuration file is being transferred.

7351 Update WLANThe inverter is updating the WLAN module.

7352

Update of WLAN not successfulThe update of the WLAN module failed.Corrective measures:

• Retry update.• If this message is displayed again, contact the Service (see Section 8,

page 67).

7353 Update time zone databaseThe inverter is updating the time zone database.

7354

Update of time zone database not successfulThe update of the time zone database failed.Corrective measures:


page 67).



Event number Message, cause and corrective measures7355 Update WebUI

The inverter is updating the inverter user interface.

7356

Update of the WebUI not successfulThe update of the inverter user interface failed.Corrective measures:


page 67).

7619

Communication fault with meter unit > Check communication to meterThe inverter is not receiving any data from the energy meter.Corrective measures:

• Ensure that the energy meter is correctly integrated into the same networkas the inverter (see energy meter manual).

• For WLAN connection, improve the WLAN connection quality (e.g. viaSMA Antenna Extension Kit) or connect the inverter with the DHCP server(router) via Ethernet.

8003

Active power limited deratingThe inverter has reduced its power output for more than ten minutes due to ex-cessive temperature.Corrective measures:

• Clean the cooling fins on the rear of the enclosure and the air ducts onthe top using a soft brush.

• Ensure that the inverter has sufficient ventilation.• Ensure that the ambient temperature +45°C (113°F) has not been

exceeded.• Ensure that the inverter is not exposed to direct solar irradiation.




Electr. arc detected > Please confirm by tappingThe inverter has detected an electric arc and was recommissioned after a dis-connection. By tapping, you are confirming that you have repaired any possi-ble damage to PV modules, DC conductors or plugs in the PV system.Corrective measures:

• Tap on the enclosure lid of the Connection Unit within ten seconds of themessage appearing in order to recommission the inverter.

8503

Self-diagnosis > Input C defectiveThe cause must be determined by the Service.Corrective measures:


8708

Timeout in communication for active power limitationCommunication to the system control absent. Depending on the fall-back set-ting, either the last received values will be retained or the active power will belimited to the set percentage value of the inverter nominal power.Corrective measures:

• Ensure that the connection to the system manager (e.g.Sunny Home Manager) is intact and that no cables are damaged or thatno plugs have been pulled.

8801 to 8803 No displayNo information can be shown on the display.

9002

SMA Grid Guard code invalidThe SMA Grid Guard code entered is incorrect. The operating parameters arestill protected and cannot be changed.Corrective measures:

• Enter the correct SMA Grid Guard code.

9003 Grid parameter lockedChanges to the grid parameters are now blocked. In order to be able to makechanges to the grid parameters, from now on you must log in using the SMAGrid Guard code.




Changing of grid parameters not possible > Ensure DC supplyThis error can have the following causes:

• The parameters to be changed are protected.• The DC voltage at the DC input is not sufficient to run the main CPU.

Corrective measures:• Enter the SMA Grid Guard code.• Ensure that at least the DC start voltage is available (green LED is

flashing, pulsing or glowing).

9202

SPS AC overvoltageAn AC source has been connected to the socket connection for secure powersupply operation.Corrective measures:

• Check the connection at the SPS slots, and make any necessarycorrections.

9203

Short circuit in the SPS power outletThe maximum initial load has been overshot or the appliance's initial current isabove the maximum permissible load current of the connection for securepower supply operation for more than 5 s.Corrective measures:

• Reduce the load at the connection for secure power supply operation.• If necessary, select an appliance with a lower initial current.

10110 Time synchronization failed: [x]No time information could be called up from the set NTP server.Corrective measures:

• Ensure that the NTP server was configured correctly.• Ensure that the inverter is integrated into a local network with Internet

connection.



Event number Message, cause and corrective measures10248 to 10249 Load reduced through device reduction or increase of query interval

The network is busy. Data exchange between the devices is not at an optimumand is greatly delayed.Corrective measures:

• Reduce the number of devices in the network.• If necessary, increase the data query intervals.• If necessary, reduce the number of devices in the network.

10250

[Interface]: package error rate [ok / high]The package error rate has changed. If the package error rate is high, the net-work is overloaded or the connection to the network switch or DHCP server(router) is disturbed.Corrective measures if the package error rate is high:

• Ensure that with an Ethernet connection, the network cable and thenetwork connector are not damaged and that the network connectors arecorrectly plugged.

• If necessary, increase the data query intervals.• If necessary, reduce the number of devices in the network.

10251 [Interface]: communication status goes to [OK / Warning / Error /Not connected]The communication status to the network switch or DHCP server (router) haschanged. An additional error message may be displayed.

10252

[Interface]: communication disruptedThere is no valid signal on the network line.Corrective measures:


• Ensure that the DHCP server (router) and any network switches aresignalizing correct operation.




[Interface]: connection speed goes to [100 Mbit / 10 Mbit]The data transfer rate has changed. The cause for the status [10 Mbit] can bea defective plug, a defective cable or the pulling or plugging of the networkconnector.Corrective measures if the status is [10 Mbit]:



10254

[Interface]: duplex mode goes to [Full / Half]The duplex mode (data transfer mode) has changed. The cause for the status[Half] can be a defective plug, a defective cable or the pulling or plugging ofthe network connector.Corrective measures if the status is [Half]:



10255 [Interface]: Network load OKThe network load has returned to a normal range after being busy.

10282 [User group]-Login via [protocol] lockedAfter several incorrect login attempts, login has been blocked for a limitedtime. In this case, the User login will be blocked for 15 minutes, theGrid Guard login for 12 hours.Corrective measures:

• Wait until the given time has expired and then retry login.

10283 WLAN module faultyThe WLAN module integrated in the inverter is defective.Corrective measures:





No WLAN connection possibleThe inverter does not currently have a WLAN connection to the selected net-work.Corrective measures:

• Ensure that the SSID, the WLAN password and the encryption methodhave been entered correctly. The encryption method is specified by yourWLAN router or WLAN Access Point and can be changed there.

• Ensure that the WLAN router or WLAN Access Point is in range and issignalizing correct operation.

• If this message is displayed often, improve the WLAN connection byusing a WLAN repeater (e.g. SMA Antenna Extension Kit).

10285 WLAN connection establishedConnection to the selected WLAN network has been established.

10286

WLAN connection lostThe inverter has lost WLAN connection to the selected network.Corrective measures:

• Ensure that the WLAN router or WLAN Access Point is still active.• Ensure that the WLAN router or WLAN Access Point is in range and is

signalizing correct operation.• If this message is displayed often, improve the WLAN connection by

using a WLAN repeater (e.g. SMA Antenna Extension Kit).

10339 Webconnect enabledThe inverter can communicate with Sunny Portal without an additional SMAcommunications product (e.g. Cluster Controller).

10340 Webconnect disabledThe Webconnect function has been switched off. This means that the invertercan not communicate with Sunny Portal without an additional SMA communi-cations product (e.g. Cluster Controller).

• If the inverter is to communicate with Sunny Portal without an additionalSMA communication product, switch the Webconnect function on.



Event number Message, cause and corrective measures10341 Webconnect error: no connection

It is likely that there is an error in the network settings.Corrective measures:

• Check the network components (DLAN, WLAN Access Point etc.).• Ensure that the following ports are not blocked:

– Registrar: ied.sma.de:9523– Proxy: ied.sma.de:9523– Stun: stun.sma.de:3478– Domain: ied.sma.de (for SIP URI)

10343 Webconnect error: Default gateway not configuredIt is likely that there is an error in the network settings.Corrective measures:



10344 Webconnect error: DNS server not configuredIt is likely that there is an error in the network settings.Corrective measures:



10345 No reply to DNS requestIt is likely that there is an error in the network settings.Corrective measures:





Event number Message, cause and corrective measures10346 SIP proxy DNS resolution failed

It is likely that there is an error in the network settings.Corrective measures:



10347 Stun server DNS resolution failedIt is likely that there is an error in the network settings.Corrective measures:



10348 Webconnect error: No reply to request to STUN serverIt is likely that there is an error in the network settings.Corrective measures:





Event number Message, cause and corrective measures10349 Webconnect error: No reply to SIP option packs

It is likely that there is an error in the network settings or a Sunny Portal mainte-nance message is present.Corrective measures:

• If a Sunny Portal maintenance message is present, wait until themaintenance has been completed.



10350 Webconnect error: Registration rejected by SIP registrarIt is likely that there is an error in the network settings.Corrective measures:



10351 Unknown SIP registryIt is likely that there is an error in the network settings.Corrective measures:





Event number Message, cause and corrective measures10352 Webconnect error: Faulty communication

It is likely that there is an error in the network settings or a Sunny Portal mainte-nance message is present.Corrective measures:




10353 Webconnect error: registration of the SIP registry has not respondedIt is likely that there is an error in the network settings or a Sunny Portal mainte-nance message is present.Corrective measures:




27107 Update file OKThe update file is suitable for this inverter and its components and is fully avail-able for the next update step.

27108 Memory card is being readThe storage medium is being read.

27109 No new update on the memory cardA new update file was not found on the storage medium.

27301 Update communicationThe inverter is updating the communication component.

27302 Update main CPUThe inverter is updating the inverter component.

27312 Update completedThe inverter has successfully completed the update.



Event number Message, cause and corrective measures27331 Update transport started

The inverter has successfully started the update.

27332 Update transport successfulThe update file has been successfully transferred to the communication compo-nent.

29001 Inst. code validThe entered Grid Guard code is valid. Protected parameters have now beenunlocked and you can adjust the parameters. The parameters will be automati-cally locked again after ten feed-in hours.

29004 Grid parameters unchangedChanging the grid parameters is not possible.

6.3 Checking the PV System for Ground Faults

If the inverter displays the event numbers 3501, 3601 or 3701, there could be a ground fault. Theelectrical insulation from the PV system to ground is defective or insufficient.

DANGERDanger to life due to electric shock when touching live system components incase of a ground faultIf a ground fault occurs, parts of the system may still be live. Touching live parts and cablesresults in death or lethal injuries due to electric shock.


• Touch the cables of the PV array on the insulation only.• Do not touch any parts of the substructure or frame of the PV array.• Do not connect PV strings with ground faults to the inverter.• Ensure that no voltage is present and wait five minutes before touching any parts of the PV

system or the product.

NOTICEDestruction of the measuring device due to overvoltage

• Only use measuring devices with a DC input voltage range of 600 V or higher.

Procedure:In order to check the PV system for ground faults, perform the following actions in the prescribedorder. The exact procedure is described in the following sections.

• Check the PV system for ground faults by measuring the voltage.



• If the voltage measurement was not successful, check the PV system via insulation resistancemeasurement for ground faults.

Test by Measuring the VoltageProceed as follows to check each string in the PV system for ground faults.

Procedure:


• Disconnect the inverter from any voltage sources (see the inverter installation manual).

2. Measure the voltages:• Measure the voltage between the positive terminal and the ground potential (PE).• Measure the voltage between the negative terminal and the ground potential (PE).• Measure the voltage between the positive and negative terminals.

If the following results are present at the same time, there is a ground fault in the PVsystem:

☑ All measured voltages are stable.☑ The sum of the two voltages to ground potential is approximately equal to the

voltage between the positive and negative terminals.3. If a ground fault is present, determine the location of the ground fault via the ratio of the two

measured voltages and eliminate the ground fault.4. If a definite ground fault cannot be measured and the message is still displayed, measure the

insulation resistance.5. Reconnect the strings without ground faults to the inverter and recommission the inverter (see

inverter installation inverter).



Location of the ground fault

The example shows a ground fault between the second and third PV module.

+

100 V 100 V 100 V 100 V 100 V

V = 200 V1 V = 300 V2

Test by Measuring the Insulation ResistanceIf the voltage measurement does not provide sufficient evidence of a ground fault, the insulationresistance measurement can provide more exact results.

+

Figure 4: Schematic diagram of the measurement



Calculating the insulation resistanceThe expected total resistance of the PV system or of an individual string can be calculatedusing the following formula:

total

The exact insulation resistance of a PV module can be obtained from the module manufactureror the datasheet.For the resistance of a PV module an average value can be assumed: for thin-film PV modulesapproximately 40 MOhm and for polycrystalline and monocrystalline PV modulesapproximately 50 MOhm per PV module (for further information on calculating the insulationresistance see the Technical Information "Insulation Resistance (Riso) of Non-GalvanicallyIsolated PV Systems" at www.SMA-Solar.com).

Required devices:☐ Suitable device for safe disconnection and short-circuiting☐ Measuring device for insulation resistance

Device required for safe disconnection and short-circuiting of the PV arrayThe insulation resistance can only be measured with a suitable device for safe disconnectionand short-circuiting of the PV array. If no suitable device is available, the insulationmeasurement must not be carried out.

Procedure:1. Calculate the expected insulation resistance per string.



3. Install the short circuit device.4. Connect the measuring device for insulation resistance.5. Short-circuit the first string.6. Set the test voltage. The test voltage should be as close as possible to the maximum system

voltage of the PV modules but must not exceed it (see datasheet of the PV modules).7. Measure the insulation resistance.8. Eliminate the short circuit.9. Measure the remaining strings in the same manner.

☑ If the insulation resistance of a string deviates considerably from the theoreticallycalculated value, there is a ground fault present in that string.

10. Reconnect to the inverter only those strings from which the ground fault has been eliminated.11. Reconnect all other strings to the inverter.




12. Recommission the inverter (see inverter installation manual).13. If the inverter still displays an insulation error, contact the Service (see Section 8, page 67).

The PV modules might not be suitable for the inverter in the present quantity.

6.4 Resetting the Operation Inhibition after Detection of anArc Fault

If the red LED is glowing and the event number 4301 is shown on the display and/or in the eventlist on the user interface of the inverter, the inverter has detected an electric arc and interrupts feed-in operation.There are two options for resetting the operation inhibition:

• Reset the operation inhibition by tapping twice on the enclosure lid of the Connection Unit.• Reset the operation inhibition by parameter setting.

Reset the operation inhibition by tapping twice on the enclosure lid of theConnection Unit

1. DANGERDanger to life due to electric shock


2. Ensure that the PV modules, the connected DC cables and the terminal block for the DCconnection are not defective.Repair or replace defective PV modules, DC cables or terminal block for the DC connection.

3. Recommission the inverter (see inverter installation manual).4. If the event with the event number 4301 appears in the display, immediately tap on the

enclosure lid twice in quick succession. Here, the operation inhibition can only be reset if theevent is showing in the display when you begin tapping.

☑ This effects resetting of the operation inhibition and the inverter will start feeding in again. Atthe same time, the blue LED can flash rapidly, indicating that there is an active WPS function.The WPS function deactivates automatically after a short period.

Reset the operation inhibition by parameter setting

1. DANGERDanger to life due to electric shock


2. Ensure that the PV modules, the connected DC cables and the terminal block for the DCconnection are not defective.Repair or replace defective PV modules, DC cables or terminal block for the DC connection.

3. Recommission the inverter (see inverter installation manual).4. Activate the user interface (see Section 4.1, page 20).



5. Log into the user interface as an Installer (see Section 4.2, page 24).6. Reset the operation inhibition by setting one of the following parameters:

• Select the parameter Reset operating data and set to Reset operation inhibition.or

• Select the parameter AFCI switched on and set to No and then back to Yes.☑ This effects resetting of the operation inhibition and the inverter will start feeding in again.

7 Compliance Information SMA Solar Technology America LLC


7 Compliance InformationFCC ComplianceThis device complies with Part 15 of the FCC Rules and with Industry Canada licence-exempt RSSstandard(s).Operation is subject to the following two conditions:

1. this device may not cause harmful interference, and2. this device must accept any interference received, including interference that may cause

undesired operation.Le présent appareil est conforme aux CNR d'Industrie Canada applicables aux appareils radioexempts de licence.L'exploitation est autorisée aux deux conditions suivantes :

1. l'appareil ne doit pas produire de brouillage, et2. l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le

brouillage est susceptible d'en compromettre le fonctionnement.NOTE: This equipment has been tested and found to comply with the limits for a Class B digitaldevice, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonableprotection against harmful interference in a residential installation. This equipment generates, usesand can radiate radio frequency energy and, if not installed and used in accordance with theinstructions, may cause harmful interference to radio communications. However, there is noguarantee that interference will not occur in a particular installation. If this equipment does causeharmful interference to radio or television reception, which can be determined by turning theequipment off and on, the user is encouraged to try to correct the interference by one or more ofthe following measures:

• Reorient or relocate the receiving antenna.• Increase the separation between the equipment and receiver.• Connect the equipment into an outlet on a circuit different from that to which the receiver is

connected.• Consult the dealer or an experienced radio/TV technician for help.

Changes or modifications made to this equipment not expressly approved by SMA SolarTechnology America LLC may void the FCC authorization to operate this equipment.

IC ComplianceThis Class B digital apparatus complies with Canadian ICES-003.Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

8 ContactSMA Solar Technology America LLC


8 ContactIf you have technical problems with our products, please contact the SMA Service Line. Thefollowing data is required in order to provide you with the necessary assistance:

• Device type• Serial number• Firmware version• Event message• Mounting location and mounting height• Type and number of PV modules• Optional equipment, e.g. communication products• Use the name of the system in Sunny Portal (if available)• Access data for Sunny Portal (if available)• Special country-specific settings (if available)• Operating mode of the multifunction relay

United States SMA Solar TechnologyAmerica LLCRocklin, CA

Toll free for USA and US Territories+1 877-MY-SMATech (+1 877-697-6283)International: +1 916 625-0870

Canada SMA Solar TechnologyCanada Inc.Mississauga

Toll free for Canada / Sans frais pour le Canada :+1 877-MY-SMATech (+1 877-697-6283)

México SMA Solar Technologyde MéxicoMexico City

Internacional: +1 916 625-0870

www.SMA-Solar.com

Documents

User Manual - SUNNY BOY 3.0-US / 3.8-US / 5.0-US / 6.0-US ... · Legal Provisions SMA Solar Technology America LLC 2 SBxx-US-1XP-40-BA-en-12 User Manual Legal Provisions No part of