Overtorque Detection 2

What does OL4 mean?

The OL4 alarm or fault signifies that the motor's current or torque has surpassed the Overtorque Detection 2 Level (L6-05) under conditions defined by L6-04. Depending on the L6-04 setting, the inverter might continue running (alarm) or coast to a stop (fault). This secondary detection allows for different responses to specific overtorque scenarios.

Complete Troubleshooting Guide

1. 1

   Consult parameter L6-04 to determine if OL4 is configured as an alarm (operation continues) or a fault (inverter stops).

2. 2

   Examine the mechanical load for any issues causing high torque, similar to OL3. Pay attention to specific operating modes or speed ranges where this detection is enabled.

3. 3

   Validate the setting of parameter L6-05 (Overtorque Detection 2 Level) to ensure it's appropriate for the application's secondary torque monitoring.

4. 4

   Check for sudden load changes or transient events that might briefly exceed the set torque limit.