Cause : Overspeed comes when the motor speed feedback exceeded the F1-08 setting or overshoot is occurring. Incorrect speed feedback scaling if terminal RP is used as speed feedback input in V/f control

1. Increase the settings for C5-01 (Speed Control Proportional Gain 1) and reduce C5-02 (Speed Control Integral Time 1).
2. If using a Closed Loop Vector mode enable Feed Forward Control and perform Inertia Auto-Tuning.
3. Set H6-02 to value of the speed feedback signal frequency when the motor runs at the maximum speed.
4. Adjust the input signal using parameters H6-03 through H6-05.
5. Incorrect PG pulse number has been set Check and correct parameter F1-01.
6. Inappropriate parameter settings. Check the setting for the overspeed detection level and the overspeed detection time (F1-08 and F1-09).