Overcurrent

What does OCF mean?

An overcurrent condition detected, indicating the motor current has exceeded the drive's protective limits. This can stem from mechanical overload, a short circuit in the motor/cabling, or an internal drive fault. Unresolved overcurrent can cause severe damage to the motor, drive, or mechanical system. This fault can be manually cleared if the 'Reset restricted fault configuration' (HrFC) parameter is set to 'Yes'.

Complete Troubleshooting Guide

1. 1

   Inspect the mechanical load for binding, obstructions, or excessive friction.

2. 2

   Verify motor wiring for any short circuits (phase-to-phase, phase-to-ground) and measure insulation resistance using a megger (>1 MΩ).

3. 3

   Check motor parameters in the drive to ensure they precisely match the motor nameplate data.

4. 4

   Reduce acceleration ramp times or increase current limits if appropriate for the application and within motor ratings.