Undertorque Detection 1

What does UL3 mean?

This error suggests a machine fault, such as a broken pulley belt, or incorrect load parameters causing the motor to operate with insufficient torque. The drive triggers this error if the output current falls below the level set in L6-02 for a duration exceeding L6-03. This can lead to process disruptions or damage if the motor is allowed to run under these conditions.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Perform a Fault Reset to clear the error after the underlying problem is resolved.