Drive: Motor overspeed

What does F07901 mean?

The motor's actual speed has exceeded its configured maximum permissible limit, either in the positive or negative direction. This indicates a potential loss of speed control, incorrect parameterization, or an external force driving the motor. Exceeding the motor's rated speed can lead to mechanical failure, rotor damage, or safety hazards.

Complete Troubleshooting Guide

1. 1

   Review and correct speed-related parameters such as p1082 (maximum speed), p1085 (positive speed limit), p1088 (negative speed limit), and p2162 (overspeed hysteresis).

2. 2

   Activate pre-control for the speed limiting controller (p1401.7 = 1) to improve speed control response.

3. 3

   Increase the hysteresis for the overspeed signal (p2162) if nuisance tripping occurs, ensuring it doesn't compromise safety.