Siemens SINAMICS G120 Function Manual page 256

Corrective maintenance
7.2 Replacing components of the modular SINAMICS G120/G120D/G110M inverters
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. In STARTER, select the screen form for the safety functions.
10.Select the "Change settings" button.
11.Select the "Activate settings" button.
12.Save your settings (copy RAM to ROM).
13.Switch off the inverter power supply.
14.Wait until all LEDs on the inverter go dark.
15.Switch on the inverter power supply again (power on reset).
16.Perform a reduced acceptance test, see the section Reduced acceptance test after
component replacement (Page 266).
You have replaced the Control Unit and transferred the safety function settings from the PC
to the new Control Unit.
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Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 04/2014, FW V4.7, A5E34261271B AA
button.