Overspeed

What does oS mean?

This fault occurs due to speed overshoot, incorrect PG pulse settings in the drive, or an improperly configured overspeed detection level. An overspeed condition can lead to mechanical failure, instability, and safety hazards if not promptly addressed.

• Motor speed exceeds the maximum allowed speed limit (P3-01).
• Runaway condition due to loss of control signal or feedback.
• Incorrect speed setpoint entered.
• Mechanical failure causing uncontrolled acceleration.

Click steps to track your progress.

1. 1

   Adjust the ASR (Automatic Speed Regulator) parameters: decrease C5-01 [ASR Proportional Gain 1] and increase C5-02 [ASR Integral Time 1].

2. 2

   Calibrate the PG pulse settings by adjusting H6-02 to H6-05 [Pulse Train Input Setting Parameters] and set H6-02 [Terminal RP Frequency Scaling] to the correct pulse train frequency for 100% reference.

3. 3

   Fine-tune the overspeed detection level and delay by adjusting F1-08 [Overspeed Detection Level] and F1-09 [Overspeed Detection Delay Time].

4. 4

   Perform a Fault Reset after making adjustments.