Replacing A Converter With Enabled Safety Function - Siemens Sinamics G120 Function Manual

7.4.2

Replacing a converter with enabled safety function

Danger from touching energized Power Module connections
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 remaining voltage is at a non-hazardous level. Death or
serious injury can result when live parts are touched.
● Check that the inverter connections are in a no-voltage condition before you carry out any
NOTICE
Material damage from swapping the motor's connection lines
The direction in which the motor rotates changes if you interchange the two phases of the
motor cable. A motor running backwards may damage the machine or installation.
● Connect the three phases of the motor cables in the correct sequence.
● After replacing the inverter, check the direction in which the motor rotates.
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:
Safety Integrated - SINAMICS G110M, G120, G120C, G120D and SIMATIC ET 200pro FC-2
Function Manual, 01/2017, FW V4.7 SP6, A5E34261271B AD
DANGER
installation work.
The loaded settings are not compatible with the inverter.
Clear the alarm with p0971 = 1 and recommission the drive.
Perform a reduced acceptance test.
Reduced acceptance after a component has been replaced and a firmware
change (Page 366)
7.4 Replacing the SINAMICS G120C converter
Corrective maintenance
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