Siemens SINAMICS G120D Operating Instructions Manual page 300

Corrective maintenance
9.1 Replacing inverter components
Replacing the Control Unit with data backup in the operator Panel
Precondition
You have backed up the actual settings of the Control Unit to be replaced to an operator
panel.
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. Plug the Operator Panel into the Control Unit or connect the Operator Panel handheld
device with the inverter.
8. Transfer the settings from the Operator Panel to the inverter.
9. Wait until the transfer is complete.
10.After loading, check whether the inverter outputs alarm A01028.
– Alarm A01028:
– No alarm A01028: Proceed with the next step.
11.Switch off the inverter supply voltage.
12.Wait until all LEDs on the inverter go dark.
13.Switch on the inverter supply voltage again.
The inverter reports the faults F01641, F01650, F01680 and F30680. Ignore these faults,
as they will be automatically acknowledged by the following steps.
14.Set p0010 to 95.
15.Set p9761 to the safety password.
16.Set p9701 to AC hex.
17.Set p0010 to 0.
18.Back up the settings so they are not lost when the power fails:
– BOP-2 in the menu "EXTRAS" - "RAM-ROM".
– IOP in the menu "SAVE RAM TO ROM".
19.Switch off the inverter supply voltage.
20.Wait until all LEDs on the inverter go dark.
300
The loaded settings are not compatible with the inverter.
Clear the alarm with p0971 = 1 and recommission the drive.
Converter with control units CU250D-2
Operating Instructions, 04/2015, FW V4.7.3, A5E34261542B AB