507Fault · Encoder / feedbackUsually repairable
SIMODRIVE 611U 507: Synchronization Error, Rotor Position
What 507 means
The rotor position from the encoder disagrees with the fine-synchronized position by more than 45 electrical degrees.
Symptoms
Fault on enable; the motor may jerk, run rough or lack torque.
Is it repairable?
Yes: we re-align encoders to the motor and test under drive control.
Common causes
- Encoder slipped on the shaft or replaced without alignment
- Noisy encoder signals from poor grounding or shielding
- Failed encoder
Safe checks
- 1Check encoder cabling, grounding and shield
- 2Ask whether the motor or encoder was recently changed (it may need re-alignment)
Drives hold dangerous voltage after power-off. Checks should only be done by qualified personnel, with power isolated and the DC link discharged.
Reviewed by AutomIQ repair technicians. Code and name from the SIMODRIVE 611 universal Function Manual.
Related SIMODRIVE 611U faults
- 003NMI due to watchdog
- 006Checksum test error
- 020NMI due to cycle failure
- 028Actual current sensing during power-up
- 504Measuring circuit error, motor measuring system
- 505Measuring circuit error, motor measuring system absolute track