Siemens SINAMICS G120 Operating Instructions Manual page 347

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
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. Attach the operator panel to the Control Unit.
8. Transfer the settings from the operator panel to the inverter, e.g. via menu "EXTRAS" -
9. Wait until the transfer is complete.
10.After loading, check whether the inverter outputs alarm A01028.
11.Switch off the inverter power supply.
12.Wait until all LED on the inverter go dark.
13.Switch on the inverter power supply again (power on reset).
14.Set p0010 to 95.
15.Set p9761 to the safety password.
16.Set p9701 to AC hex.
17.Set p0010 to 0.
18.Ensure that the settings are protected against power failure, e.g. via menu "EXTRAS" -
19.Switch off the inverter power supply.
20.Wait until all LED on the inverter go dark.
21.Switch on the inverter power supply again (power on reset).
22.Perform a reduced acceptance test, see the section Reduced acceptance (Page 315).
You have replaced the Control Unit and transferred the safety function settings from the
operator panel to the new Control Unit.
Converter with the CU250S-2 Control Unit (vector)
Operating Instructions, 06/2013, FW V4.6, A5E31759476B AB
supply or the voltage for the digital outputs of the Control Unit.
"FROM BOP" in the BOP-2.
– Alarm A01028:
The loaded settings are not compatible with the inverter.
Clear the alarm with p0971 = 1 and recommission the drive.
– No alarm A01028: Proceed with the next step.
The inverter signals the faults F1650, F1680, and F30680. Ignore these faults, as they
will be automatically acknowledged by the following steps.
"RAM-ROM" in the BOP-2.
10.2 Replacing a Control Unit with enabled safety function
Corrective maintenance
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