Troubleshooting and fault elimination 8
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BA 12.0028−EN 6.0
8 Troubleshooting and fault elimination
If any malfunctions should occur during operation of the drive system, please check the
possible causes using the following table. If the fault cannot be eliminated by one of the
listed measures, please contact the Lenze Service.
Fault Possible cause Remedy
Drive is at standstill
Voltage supply interrupted
Check connection
Wrong electrical connection Check if nameplate matches voltage supply
Excessive load Reduce load
Check drive − machine combination
Motor running, gearbox at
standstill
Fixing elements are missing or
defective
Check attachment
Gearbox is defective Contact Lenze Service
Unusual noise Overload Reduce load
Check drive − machine combination
Damage in the gearbox or
motor
Contact Lenze Service
Excessive temperature Overload Reduce load
Check drive − machine combination
Insufficient heat dissipation Improve cooling air supply
Clean gearbox / motor
Insufficient lubricant Refill lubricant as specified
Loose fixing elements Vibrations Avoid vibrations
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