Cause : Overspeed comes when the speed actual value has exceeded the value of maximum speed plus the set hysteresis. This means the positive or negative maximum speed has been exceeded.he positive or negative maximum speed has been exceeded.

The A033 alarm in siemens master drive indicates an overspeed alarm. This means the motor connected to the drive has exceeded its safe maximum speed.

1. Increase relevant maximum speed.
2. Reduce regenerative load.
3. Increase the parameter for the maximum frequencies or reduce the regenerative load.