7.3.3 Replacing the Control Unit without data backup
If you do not backup the settings, then you must recommission the drive after replacing the
Control Unit.
Procedure
To replace the Control Unit without backed-up settings, proceed as follows:
1. Disconnect the line voltage to the Power Module and (if installed) the external 24 V supply
or the voltage for the digital outputs of the Control Unit.
2. Remove the signal cables of the Control Unit.
3. Remove the defective Control Unit.
4. Mount the new Control Unit on the Power Module.
5. Reconnect the signal cables of the Control Unit.
6. Switch on the line voltage again.
7. Recommission the drive.
The Control Unit replacement has been completed after the drive has been successfully
commissioned.
Corrective maintenance
7.3 Replacing components of the SINAMICS G120 or G120D inverters
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
340 Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD
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