ST130 | Error E.oC1 – What does it mean and what can be done?
If the error message E.oC1 appears on the ST130 inverter display, it indicates an overcurrent fault during acceleration of the connected motor.
| Possible cause | Possible solution |
| Acceleration ramp too short | Increase the acceleration time (F0.05) |
| Manual torque boost or unsuitable V/f curve |
Reduce torque boost or adjust V/f curve |
| Supply voltage too low | Check mains connection |
| Short circuit at motor | Inspect motor wiring |
| Missing or incorrect motor parameters | Enter correct motor data |
| Motor already moving before start | Enable speed detection or stop motor before starting |
| Phase loss at inverter output | Check output wiring |
| Inverter power rating too low | Use a higher-rated inverter |