Overcurrent
Vacon · NX All-in-One Application
What does 1 mean?
A hardware trip (S1) has detected excessively high current (>4 times nominal current) in the motor cable, potentially due to a sudden heavy load, a short circuit in the motor cables, or an incorrectly matched motor. Other subcodes (S3, S4) indicate current controller supervision issues or an exceeded user-configured limit.
Common Causes
- Motor or load current exceeds the nominal rating (e.g., P1-10 = 15A).
- Short circuit in the motor windings or power cables.
- Mechanical overload on the driven equipment.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Inspect the motor's mechanical loading and reduce if exceeding the motor's nominal capacity.
- 2
Verify the motor's specifications (e.g., nominal current, voltage, power) match the AC drive's rating and application requirements.
- 3
Visually inspect the motor cables for damage, proper routing, and verify all connections are secure and free of short circuits.
- 4
Perform an identification run to ensure the drive's motor parameters are accurately tuned to the connected motor.