OSF

MAINS OVERVOLTAGE

Schneider Electric · ATV32HD11N4 Variable Speed Drive

What does OSF mean?

This fault occurs when the incoming line voltage supplied to the drive is too high or the line supply is disturbed by transient spikes. Persistent overvoltage conditions can stress and damage the drive's internal power components, reducing its lifespan. Immediate action is required to protect the drive.

Complete Troubleshooting Guide

  1. 1

    Verify the incoming line voltage using a multimeter to ensure it falls within the drive's specified operating range.

  2. 2

    Check for any external factors causing voltage disturbances or transients on the line supply.

  3. 3

    If line voltage is consistently high, consider installing appropriate line reactors or voltage regulation equipment.

Source: Schneider Electric Manual