Replacing The Inverter - Siemens SINAMICS G120 Function Manual

Servicing and maintenance
5.2 Replacing the SINAMICS G120C inverter
5.2.2

Replacing the inverter

After commissioning has been completed, we recommend that you back up your settings on
an external storage medium, e.g.: on a memory card or the operator panel.
Without a data backup, you must recommission the drive after replacing the inverter.
Procedure to replace an inverter with memory card
● Disconnect the line voltage to 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.
● Remove the memory card from the old inverter and insert it in the new inverter.
● Reconnect the signal cables of the Control Unit.
● Reconnect the connectors for line, motor and braking resistor of the inverter.
● Connect up the line voltage again.
● The inverter adopts the settings from the memory card, saves them (protected against
● For inverters of the same type and an equal or higher firmware version, you can switch
184
DANGER
power failure) in its internal parameter memory, and switches to "ready to start" state.
on the inverter without any additional commissioning.
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.
Safety Integrated Function Manual, SINAMICS G120 and G120C
Function Manual, 01/2011, FW 4.4, A5E03052391B AB