Drive Controller Overheat

What does OHF mean?

This fault indicates that the drive controller's internal temperature or its I²t thermal model has exceeded safe operating limits, leading to an overheat condition. Continuous operation in this state will cause irreversible damage to the drive's sensitive electronic components.

Complete Troubleshooting Guide

1. 1

   Check the motor load to ensure it is within the drive's rated capacity and not causing excessive current draw.

2. 2

   Inspect the drive controller's ventilation system (fans, heatsinks) for obstructions, dust accumulation, or fan failure, and ensure the ambient temperature is within specifications.

3. 3

   Allow the drive controller to cool down completely before attempting to reset and restart operation.