BECKHOFF AM8100 - Manual (Page 26)

Comissioning
Error Possible cause Measures to remove the cause
of the fault
Motor doesn’t rotate Servo terminal not enabled
Break in setpoint lead
Motor phases in wrong sequence
Brake not released
Drive is mechanically blocked
Supply ENABLE signal
Check setpoint lead
Correct the phase sequence
Check brake control
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 feedback cable
Use motor default values
Error message: brake Short­circuit in the supply voltage
lead to the motor holding brake
Voltage too low
Faulty motor holding brake
Remove the short circuit
Increase the voltage
Replace motor
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
Internal error
Check the plug connector
Check cables
Reading of error messages from
OCT feedback
Brake does not grip Required holding torque too high
Brake faulty
Check the design
Replace motor
Synchronous servomotor AM8100 26 Version 1.1