Cause : Over-torque 3 warning comes when the motor connected to the drive has exceeded the set torque limit for a certain period.

The ot3 error code on your Delta MS300 drive indicates an Over-torque Warning Level 3. This error signifies that the motor's torque has exceeded a over-torque limit.

1. When the output current < Pr.14-75, the Ot3 warning automatically clears.
2. When the output current < Pr.14-75, the Ot3 warning automatically clears.
3. Configure the settings for Pr.14-75 and Pr.14-76 again.
4. Decrease the loading.
5. Correct the parameter settings for speed tracking.