Siemens SINAMICS G120 Operating Instructions Manual page 418

Corrective maintenance
9.2 Replacing inverter components
Procedure
1. Switch off 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. Switch on the line voltage again.
7. Open the right project for the drive in the PC.
8. Select "Load to device".
9. Connect Startdrive online with the drive.
The inverter signals faults after the download. Ignore these faults, as they will be
automatically acknowledged by the following steps.
10.Press the "Start safety commissioning" button.
11.Enter the password for the safety functions.
12.Confirm the prompt for saving your settings (copy RAM to ROM).
13.Disconnect the online connection.
14.Switch off the inverter power supply.
15.Wait until all LEDs on the inverter are dark.
16.Switch the inverter power supply on again.
17.Perform a reduced acceptance test.
(Page 436)
You have replaced the Control Unit and transferred the safety function settings from the PC
to the new Control Unit.
❒
Replacing the Control Unit with data backup in the operator panel
Requirement
You have backed up the actual settings of the Control Unit to be replaced to an operator panel.
Procedure
1. Switch off 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.
416
Reduced acceptance after a component has been replaced and a firmware change
Converter with the CU250S-2 Control Units
Operating Instructions, 04/2018, FW V4.7 SP10, A5E31759476B AG