Integrating Inverters Into Profibus; Configuring The Communication Using Simatic S7 Control - Siemens SINAMICS G120 Operating Instructions Manual

Installing
4.7 Connecting the inverter to the fieldbus
4.7.2.2

Integrating inverters into PROFIBUS

Procedure
To connect the inverter to a control via PROFIBUS DP, proceed as follows:
1. Integrate the inverter into the bus system (e.g. line topology) of the control using
PROFIBUS cables via socket X126.
The maximum permitted cable length to the previous station and the subsequent one is
100 m at a baud rate of 12 Mbit/s.
2. Externally supply the inverter with 24 VDC through terminals 31 and 32.
The external 24 V supply is only required if communications with the control should also
run when the line voltage is switched off.
You have now connected the inverter to the control using PROFIBUS DP.
Communication with the controller even when the supply voltage on the Power Module is
switched off
You must supply the Control Unit with 24 V DC at terminals 31 and 32 if you wish to maintain
communication with the control system when the line voltage is switched off.
In the case of brief interruptions of the 24 V power supply, the inverter may signal a fault
without communications with the control system being interrupted.
4.7.2.3

Configuring the communication using SIMATIC S7 control

● If the inverter is listed in the hardware library of HW-Conifg, you can configure the
communication in the SIMATIC control.
● If the inverter is not listed in the hardware library, you can either install the newest
STARTER or Startdrive version or install the GSD of the inverter via "Extras/GSD-Install
file" in HW-Config.
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Overview of the interfaces (Page 91)
Converter with the CU240B-2 and CU240E-2 Control Units
Operating Instructions, 01/2016, FW V4.7 SP6, A5E34259001B AC