Lenze DISCO−Variable speed drive - Manual (Page 28)

Troubleshooting and fault elimination 8
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28 BA 11.5032−EN 3.0
8 Troubleshooting and fault elimination
Fault Possible cause Remedy
Drive does not start Voltage supply interrupted Check connection
Faulty electrical connection Check that supply voltage matches
nameplate data
Excessive load Reduce load
Check drive−machine assignment
Motor runs, gearbox does not Coupling components are missing or
defective Check mounting
Gearbox is defective Inform Lenze Service
Unusual running noise Overload Reduce load
Check drive−machine assignment
Damage to the gearbox or motor Inform Lenze Service
Excessive temperature Overload Reduce load
Check drive−machine assignment
Inadequate heat dissipation Improve cooling air flow
Clean gearbox/motor
Lack of lubricant Top up lubricant according to regulations
Loose fixing elements Vibrations Avoid vibrations