Internal Fault

What does -InF mean?

This fault signifies a general internal malfunction within the drive controller, possibly related to internal circuitry or connections. Electromagnetic interference (EMI) can sometimes induce such faults, or it could be a hardware failure. Continued operation with an internal fault is not possible and requires immediate attention to prevent further damage or unexpected behavior.

Complete Troubleshooting Guide

1. 1

   Identify and mitigate potential sources of electromagnetic interference (EMI) near the drive controller and its control wiring, ensuring proper grounding and shielding.

2. 2

   Verify that any connected accessories, such as the start/stop potentiometer kit (VW3A28100), were not connected or disconnected while the drive was powered. Power cycle the drive after verification.

3. 3

   If the fault persists after checking EMI and accessory connections, the drive controller likely has a permanent internal hardware failure and needs replacement.