ocA (1) Over-current during acceleration fault in Delta CP2000 series drive
Cause:
- Acceleration time is too short.
- Short circuit at motor output (poor insulation/wiring).
- Motor burnout or aging insulation.
- Load is too large.
- Impulsive change of load.
- Torque compensation too large.
Remedy:
- Increase acceleration time (or S-curve time).
- Check motor cable and remove short circuits.
- Check motor insulation with megger.
- Replace drive with larger capacity model if load exceeds rating.
- Check contactor timing at output (U/V/W).
- Adjust V/F curve setting (reduce voltage if too high).
- Adjust torque compensation (Pr.07-26).
- Perform speed tracking if motor starts in free run.