Replacing A Converter Without Enabled Safety Function - Siemens SINAMICS G120C USS/MB Operating Instructions Manual

Corrective maintenance
9.2 Replacing inverter components
9.2.3

Replacing a converter without enabled safety function

Replacing an inverter with data backup on a memory card
Procedure
To replace the inverter, proceed as follows:
1. Disconnect the line voltage to the inverter and (if installed) the external 24 V supply or the
voltage for the digital outputs of the inverter.
2. Remove the connecting cables of the inverter.
3. Remove the defective inverter.
4. Install the new inverter.
5. Remove the memory card from the old inverter, and insert this into the new inverter.
6. Connect all of the cables to the inverter.
7. Reconnect the line voltage, and (if being used) the external 24 V supply or the voltage for
the digital outputs of the inverter.
8. The inverter loads the settings from the memory card.
9. After loading, check whether the inverter outputs Alarm A01028.
– Alarm A01028:
– No alarm A01028:
You have successfully replaced the inverter.
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WARNING
Electric shock as a result of a residual charge in power components
After the power supply has been switched off, it takes up to 5 min. until the capacitors in
the inverter have discharged so that the residual charge is at a non-hazardous level.
● Check the voltage at the inverter connections before you carry out any installation work.
NOTICE
Damage from swapping the motor's connection lines
The direction in which the motor rotates switches if you swap the two phases of the motor
line.
● Connect the three phases of the motor lines in the right order.
● After replacing the power module, check the direction in which the motor rotates.
The loaded settings are not compatible with the inverter.
Clear the alarm with p0971 = 1 and recommission the drive.
The inverter has accepted the settings that have been loaded.
Operating Instructions, 09/2017, FW V4.7 SP9, A5E34263257B AF
SINAMICS G120C converter