Cause : Over Voltage .

- DC-link controller disabled (P1240 = 0)

- DC-link voltage (r0026) exceeds trip level (P2172)

- Overvoltage can be caused either by too high main supply voltage or if motor is in regenerative mode. Regenerative mode can be caused by fast ramp downs or if the motor is driven from an active load.

Diagnose & Remedy

Check the following:

1. Supply voltage (P0210) must lie within limits indicated on rating plate
2. DC-link voltage controller must be enabled (P1240) and parameterized properly
3. Ramp-down time (P1121) must match inertia of load
4. Required braking power must lie within specified limits