Siemens SINAMICS G120 Operating Instructions Manual page 251

Procedure for replacing the inverter without a memory card
● Disconnect the line voltage of the inverter.
Risk of electrical shock!
Hazardous voltage is still present for up to 5 minutes after the power supply has been
switched off.
It is not permissible to carry out any installation work before this time has expired!
● Remove the connectors for line, motor and braking resistor of the inverter.
● Remove the signal cables of the inverter.
● Remove the defective inverter.
● Mount the new inverter.
● Reconnect the signal cables of the inverter.
● Reconnect the connectors for line, motor and braking resistor of the inverter.
● Connect up the line voltage again.
● The inverter goes into the "ready-to-switch-on" state.
● If you have saved your settings:
● If you did not save the parameter setting, you have to recommission the drive.
Inverter with enabled safety functions
If you replace an inverter with enabled safety functions, then you also need to confirm the
safety function settings on the new inverter. You will find the procedure in Section: Data
backup and series commissioning (Page 71).
SINAMICS G120C Inverter
Operating Instructions, 01/2011, FW 4.4, A5E02999804A AB
DANGER
– Load the settings from the Operator Panel or via the STARTER in your inverter.
– For inverters of the same type and an equal or higher firmware version, you can now
switch on the motor. Check the function of the motor.
Alarm A01028 will be output for inverters of different types. This alarm indicates that
the parameter settings are not compatible with the inverter. In this case, delete the
message using p0971 = 1 and recommission the drive.
Servicing and maintaining
9.2 Steps for replacing the inverter
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