Undertorque Detection 2

What does UL4 mean?

This fault triggers when the drive's output current falls below the level set in L6-05 for longer than the time specified in L6-06. Similar to UL3, it's often caused by a machine problem like a broken pulley belt or misconfigured load parameters. Ignoring this can result in undetected mechanical problems, operational inefficiencies, or unexpected stops.

Complete Troubleshooting Guide

1. 1

   Inspect the machine for any mechanical failures or disconnections in the load path, such as a broken pulley belt, and address the underlying cause.

2. 2

   Carefully review and modify the L6-05 [Torque Detection Level 2] and L6-06 [Torque Detection Time 2] parameters to correctly match the expected minimum load for the machine's operation.

3. 3

   Execute a Fault Reset to clear the fault from the drive's memory after troubleshooting.