Siemens SINAMICS G120 Operating Instructions Manual page 333

3. Remove the defective Control Unit.
4. Mount the new Control Unit on the Power Module. The new Control Unit must have the
same article number and the same or higher firmware version as the Control Unit that
was replaced.
5. Remove the memory card from the old Control Unit and insert it in the new Control Unit.
6. Reconnect the signal cables of the Control Unit.
7. Connect up the line voltage again.
8. The inverter loads the settings from the memory card.
9. After loading, check whether the inverter outputs alarm A01028.
– Alarm A01028:
– No alarm A01028:
You have successfully replaced the Control Unit.
Replacing a Control Unit with data backup in the PC
Precondition
You have backed up the actual settings of the Control Unit to be replaced to a PC using
STARTER.
Procedure
To replace the Control Unit, 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. Connect up the line voltage again.
7. Open the right project for the drive in STARTER.
8. Go online and transfer the settings from the PC to the inverter by pressing the
The inverter signals faults after the download. Ignore these faults, as they will be
automatically acknowledged by the following steps.
9. Save your settings (copy RAM to ROM).
You have successfully replaced the Control Unit.
Converter with CU230P-2 Control Units
Operating Instructions, 04/2015, FW V4.7 SP3, A5E34257946B AB
The loaded settings are not compatible with the inverter.
Clear the alarm with p0971 = 1, and recommission the drive.
The inverter accepts the settings that have been loaded.
Corrective maintenance
8.1 Replacing inverter components
button.
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