7.5.3 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. Switch off the inverter power supply voltage.
2. Remove all cables from the inverter.
3. Wait for 5 minutes until the device is in a no-voltage condition.
4. Release the four Power Modules screws.
5. Remove the Power Module.
6. Withdraw the ribbon cable to the CPI module from the Control Unit.
7. Release the four screws from the Control Unit.
8. Remove the defective Control Unit.
9. Mount the new Control Unit.
10.Insert the ribbon cable to the CPI module back into the Control Unit.
11.Mount the Power Module on the Control Unit.
12.Reconnect all of the cables to the inverter.
13.Switch on the power supply voltages again.
14.Recommission the drive.
The Control Unit replacement has been completed after the drive has been successfully
commissioned.
Corrective maintenance
7.5 Replacing components of the SINAMICS G110M inverters
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
358 Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD
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