Overspeed

What does SOF mean?

An overspeed condition detected. This means the motor speed has exceeded a predefined maximum limit. This can be caused by an overhauling load, incorrect speed reference, or a feedback error. Overspeed can lead to mechanical damage, safety hazards, and motor/drive failure.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the mechanical load for overhauling conditions (e.g., descending load).

2. 4

   Verify the speed feedback device (encoder, resolver) and its wiring for accuracy.

3. 5

   Increase deceleration ramps if necessary to control transient speeds.