Overtorque

What does OL3 mean?

An OL3 condition indicates an overtorque situation where the motor's output torque exceeds the configured L6-02 level for the duration set in L6-03. This can be set as either an alarm or a fault and can be detected continuously or only when at speed agreement. It typically signifies a jam, excessive mechanical load, or an obstruction in the driven equipment. Unresolved overtorque can lead to motor overheating, mechanical damage, or drive trip.

Complete Troubleshooting Guide

1. 1

   Inspect the mechanical system for jams, obstructions, excessive load, or binding that could be causing the motor to draw excessive current/torque.

2. 2

   Verify that the motor and drive are correctly sized for the application's maximum and typical torque requirements.

3. 3

   Adjust L6-02 (Torque Detection Level 1) and L6-03 (Torque Detection Time 1) to an appropriate level for the application, ensuring it detects actual problems without nuisance trips during normal operation.

4. 4

   Ensure proper lubrication and alignment of mechanical components to reduce friction and load.

5. 5

   Check L6-01 to confirm if the condition is set to trigger an alarm or a fault, and if detection is only at speed agreement or continuously during run.