Troubleshooting

The following table is to be seen as a “First Aid” box. There can be a large number of different reasons for a fault, depending on the particular conditions in your system. The fault causes described below are mostly those which directly influence the motor.
Our applications department can give you further help with your problems.

Error	Possible cause	Measures to remove the cause of the fault
Motor doesn’t rotate	Break in setpoint lead Motor phases in wrong sequence Drive is mechanically blocked	Check setpoint lead Correct the phase sequence Check mechanism
Motor runs away	Motor phases in wrong sequence	Correct the phase sequence
Motor oscillates	Break in the shielding of the feedback cable Amplification to high	Replace the feedback cable Use motor default values
Error message: output stage fault	Motor cable has short circuit or earth leakage Motor has short circuit or earth leakage	Replace motor cable Replace motor
Error message: feedback	Connector is not properly plugged in Break in cable, cable crushed or similar	Check the plug connector Check cables