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Data sheet GCM MOD GMM EC.1 V_1.0

Data sheet GCM MOD GMM EC.1Communications module Modbus for GMM EC

ERP no.: 5206415 GCM MOD GMM EC.1

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

Contents

1 GCM MOD GMM EC.1.................................................................31.1 Functional description.......................................................................31.2 Connections........................................................................................ 41.3 LED.......................................................................................................51.4 Slide switch........................................................................................ 51.5 Electrical properties of..................................................................... 61.6 Installation / Operating conditions................................................. 61.7 Scope of delivery...............................................................................71.8 Dimensions and weight.................................................................... 7

2 Installation.................................................................................... 82.1 Requirements..................................................................................... 82.1.1 Handling................................................................................................................. 8

2.1.2 Hardware................................................................................................................8

2.2 Installation.......................................................................................... 92.3 Fault/troubleshooting..................................................................... 112.4 Modbus network - termination, earthing, shielding................... 12

3 Index............................................................................................ 13

4 Picture index.............................................................................. 14

5 Table index................................................................................. 15

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

1 GCM MOD GMM EC.1

1.1 Functional description

The GCM MOD GMM EC.1 module is used to connect the GMM EC control unit to a Modbusnetwork. It facilitates reading out data as well as external control via an RS485 interface. Theprotocol used is Modbus RTU.

The RS485 interface of the Modbus module has galvanic separation.

The GCM MOD GMM EC.1 module can be used for all GMM EC variants.

Both the information transmitted via the bus interface and the protocol used are described indetail in the current Modbus interface specification.

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

1.2 Connections

Connections and components for GCM MOD GMM EC.1

Label Description

SV1 Male connector for connecting the Modbus adapter to the EC controllerof the GMM EC

X1 Terminal on the internal CAN bus for extensions such as GHMspray

CH CAN high signal of the internal CAN interface

CL CAN low signal of the internal CAN interface

GND Ground reference potential of the internal CAN interface

X2 Terminal for connecting to the Modbus network (RS485 two-wire inter-face). This interface has galvanic separation.

A Signal A / data + of Modbus interface

B Signal B / data – of Modbus interface

C Common / GND reference potential of the Modbus interface

Connections for GCM MOD GMM EC

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

1.3 LED

LED name LED state Description

on Module ready for operation, no Modbuscommunication

flashing Module ready for operation, active Modbuscommunication

D1

off Module not ready for operation (1)

State of LED D1

(1) See Fault/troubleshooting, Page 11

1.4 Slide switch

Number State Description

S1 Control of EC controller

off Normal operation of EC controller (default)1

on Reset EC controller

off Normal operation of EC controller (default)2

on Boot mode of EC controller

S2 Control of Modbus adapter

off Normal operation of Modbus adapter (de-fault)1

on Reset Modbus adapter

off Normal operation of Modbus adapter (de-fault)2

on Boot mode of Modbus adapter

off Modbus termination inactive (2)3

on Modbus termination active (default) (2)

DIP switch settings

(2) Termination may be activated only on the first and last units on the Modbus network. Allother units must have termination deactivated.

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

1.5 Electrical properties of

Min Type Max Unit

Power supply 4.75 5.0 5.25 V

Current consumption 110 200 mA

Power consumption 0.55 1.1 W

Modbus

Termination (can be switched in) 120 Ω

Transmission rate 1200 9600 115200 bit/s

Galvanic separation 1,000 V (rms)

Withstand voltage A/B -7 +12 V

Electrical properties

1.6 Installation / Operating conditions

• The Modbus module is intended for installation in a GMM EC casing. Installation must onlybe performed by personnel with appropriate professional training.

• The shielding of bus lines must be earthed at one end only.

• Suitable shielding and routing measures must be taken to ensure that mains cables andmotor cables do not cause any interference in signal and control lines.

• Bus cables must be connected via shielded cables.

• Recommended cables: Belden 9841, Lapp 2170203, Lapp 2170803, Helukabel 81910

• Temperature in operation: -20°C ~ +70°C

• Temperature for storage and transport -20°C ~ +70°C, dry

• The GMM EC with Modbus adapter GCM MOD GMM EC.1 complies with the EMC stan-dards:

EN 61000-6-2 (Immunity for industrial environments)EN 61000-6-3 (Noise emission for residential use)IEC 61000-4-4/-5/-6/-11

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

1.7 Scope of delivery

• GCM MOD GMM EC.1 module pre-assembled incl. fastening material

• Customised ribbon cable 165 mm

• Data sheet with installation instructions

1.8 Dimensions and weight

GCM MOD GMM EC.1

All values in mm

Weight:approx. 35g

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

2 Installation

2.1 Requirements

2.1.1 Handling

The GCM MOD GMM EC.1 reacts sensitively to electrostatic discharge.

CAUTION

Take appropriate precautionary measures when handling the module.

An example of a precautionary measure is the wearing of an ESD wristband which is connect-ed to an earthing point. Turn off the GMM EC power supply before beginning installation.

2.1.2 Hardware

The GCM MOD GMM EC.1 can be installed on hardware version 3.2 or later of the EC con-troller board. It cannot be subsequently installed on earlier hardware versions. The hardwareversion can be found on the top and bottom of the circuit board. Since it is not always possi-ble to identify the hardware version when the circuit board is installed, the easiest way of find-ing out a compatible version is by looking at the two mounting holes for the GCM, as shown inImage 2: EC/08 controller board and Image 3: EC/16 controller board.

EC/08 controller board EC/16 controller board

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

2.2 Installation

1) Disconnect the power supply to the GMM EC.

2) Remove the upper control unit from the GMM EC by loosening the screws as shown inImage 4: GMM EC/08 + GMM EC/16 and by disconnecting the connecting cable from thepin header of the lower controller PCB.

GMM EC/08 + GMM EC/16

3) If not already done, insert the ribbon cable into the pin connector socket of the GCM.When doing so, ensure that the cable exits at the side to the left, as shown in Image 5: GCMMOD GMM EC with ribbon cable.

GCM MOD GMM EC with ribbon cable

4) Now insert the free multipoint connector of the ribbon band into the corresponding pinconnector socket of the controller circuit board. When using in the GMM EC/08, the ribboncable is to be laid in a loop.

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

GMM EC/08 cable loop

5) Place the GCM on the EC controller circuit board with the two spacer bolts screwed inplace in the mounting holes of the controller circuit board and press it down slowly. Thespacer bolts must snap into place in the controller circuit board. If the bolts are correctlysnapped into place it is no longer possible to remove them. The two additional spacer boltsare used for mechanical stabilisation and merely lay on the controller circuit board. They arenot screwed in place. The upper spacer bolt fixes the position of the GCM towards the sup-port plate of the control unit. Check that the spacer bolts are correctly seated before contin-uing with the installation.

6) Check that the DIP switch is correctly set for normal operation.

→ see graphic Connections , Page 4 and see table Slide switch, Page 5

Activate or deactivate the termination for the Modbus according to the position of the GMMEC on the Modbus network.

Termination may be activated only on the first and last units on the Modbus network. All otherunits must have termination deactivated.

→ See Modbus network - termination, earthing, shielding, Page 12

7) For mounting the upper control unit, first reconnect the connecting cable to the pin head-er of the controller PCB and then attach the support plate again using the screws from step2.

8) Connect the shield of the Modbus cable to the corresponding subplate on the EC con-troller board. If you are using a GMM EC/16 with 16 fans, use the upper subplate to fit theshielding.

→see Image 4: GMM EC/08 + GMM EC/16, Page 9

Recommended cable types are listed under Installation / Operating conditions, Page 6 .

The standard connection for the shielding is on the lower subplate, onto which the shielding forthe fans is also fitted.

→ See Modbus network - termination, earthing, shielding, Page 12

9) Connect the signal lines of the Modbus cable to the terminals of terminal strip X2.

→ see table Connections , Page 4

The Modbus interface is galvanically isolated from the GMM-EC.

10) The unit is now ready for operation.

After switching on the GMM EC supply voltage, the operating state of the GCM MOD GMMEC.1 can be verified using the LED D1.

→ see table LED, Page 5

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

2.3 Fault/troubleshooting

Fault status Cause/troubleshooting

Fault with supply voltage→ Check mains voltage of GMM EC, check fuses,check that ribbon cable connector is correctly seated

DIP switch "GCM Reset" and/or "GCM Firmware" ac-tive→ Put S2 switches 1 + 2 into the OFF position

LED does not illuminate

Fault with firmware→ Reimport firmware for GCM MOD GMM EC

Control unit displays the following: "No power unit" or "Fault with bus"

DIP switch "ECC Reset" and/or "ECC Firmware" active→ Put S1 switches 1 + 2 into the OFF position

Fault with signal connection→ Check connection of signals A and B

LED does not flash, even thoughthe Modbus master is active

Faulty configuration of Modbus address, baud rate orframing parameters→ Check setting of the Modbus interface parametersin the GMM EC control unit

Fault/troubleshooting

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

2.4 Modbus network - termination, earthing, shielding

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

3 Index

CConnections.................................................................................................................................................................... 4

FFault/troubleshooting.............................................................................................................................................. 11

HHandling........................................................................................................................................................................... 8

IInstallation....................................................................................................................................................................... 8

LLED..................................................................................................................................................................................... 5

SScope of delivery......................................................................................................................................................... 7Slide switch.................................................................................................................................................................... 5

TTroubleshooting......................................................................................................................................................... 11

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

4 Picture index

Image 1: Connections and components for GCM MOD GMM EC.1.........................................4

Image 2: EC/08 controller board............................................................................................................8

Image 3: EC/16 controller board............................................................................................................8

Image 4: GMM EC/08 + GMM EC/16.................................................................................................. 9

Image 5: GCM MOD GMM EC with ribbon cable............................................................................ 9

Image 6: GMM EC/08 cable loop........................................................................................................ 10

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Data sheet GCM MOD GMM EC.1 V_1.0 © Güntner GmbH & Co. KG

5 Table index

Table 1: Connections for GCM MOD GMM EC....................................................................................4

Table 2: State of LED D1 ............................................................................................................................5

Table 3: DIP switch settings........................................................................................................................ 5

Table 4: Electrical properties.......................................................................................................................6

Table 5: Fault/troubleshooting ............................................................................................................... 11