oL3

Overtorque 1

Yaskawa · J1000 AC Drive

What does oL3 mean?

The drive's output current (or calculated torque in OLV, CLV, AOLV/PM, CLV/PM modes) has exceeded the threshold set in L6-02 for longer than the time specified in L6-03. This fault typically indicates either incorrect parameter settings for torque detection or a mechanical issue on the machine side causing excessive load on the motor. Ignoring this can lead to damage to the motor, gearbox, or driven equipment.

Complete Troubleshooting Guide

  1. 1

    Verify and adjust parameters L6-02 (Overtorque 1 Detection Level) and L6-03 (Overtorque 1 Detection Time) to accurately reflect the application's normal operating torque.

  2. 2

    Thoroughly inspect the driven machine for mechanical faults such as locked-up components, increased friction, worn bearings, or material jamming, and resolve the root cause of the overload.

Source: Yaskawa Manual