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Corrective maintenance
16.1 Replacing a converter
Unexpected machine movement caused by incorrect converter type
If a replacement is made with a converter of a different type, this can result in incomplete or
unsuitable converter settings. This can result in unexpected machine movements, e.g. speed
oscillation, overspeed or incorrect direction of rotation. Unexpected machine movements can
result in death, injury or property damage.
• In all cases not permitted according to the above requirements, you must recommission the
Unexpected machine movement caused by unsuitable converter settings
Missing or unsuitable converter settings can lead to unexpected operating states or machine
movements, e.g. a non-functioning EMERGENCY STOP or an incorrect direction of rotation.
This can result in damage to machine components or system sections or in death or bodily
injury.
• Back up the settings of the converter to be replaced by uploading them to an external
• Transfer the settings of the converter to be replaced by downloading them to the new
• If you do not have a backup of the converter settings, recommission the new converter.
• Check the new converter for proper functioning.
NOTICE
Damage caused by interchanging the motor cables
The direction in which the motor rotates switches if the two phases of the motor cable are
interchanged. An incorrect direction of rotation can lead to damage in the machine or system.
• Connect the 3 phases of the motor cables in the correct sequence.
Procedure
Proceed as follows to replace a converter:
1. Disconnect the line voltage to the converter.
2. Remove the connecting cables of the converter.
3. Remove the defective converter.
4. Install the new converter.
5. Connect all of the cables to the converter.
760
WARNING
drive after replacing the converter.
WARNING
storage medium, e.g. a memory card.
converter.
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB
SINAMICS G220 converter
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