Motor Short-Circuit

What does SCF mean?

This fault signals a short-circuit or ground fault condition detected at the output of the drive controller or within the motor windings. This is a critical fault that can cause immediate and significant damage to the drive's output stage if not addressed.

Complete Troubleshooting Guide

1. 1

   Perform a thorough visual inspection of the motor cables for any insulation damage, chafing, or signs of short-circuiting.

2. 2

   Using a megger, measure the insulation resistance between each motor phase and ground, and between phases, ensuring it meets manufacturer specifications (typically >1 MΩ).