Cause : Hardware current limiting in phase U comes when hardware current limit for phase U responded. The pulsing in this phase is inhibited for one pulse period.

- closed-loop control is incorrectly parameterized.
- fault in the motor or in the power cables.
- the power cables exceed the maximum permissible length.
- motor load too high.
- power unit defective.

1. check the motor data and if required, recalculate the control parameters (p0340 = 3). As an alternative, run a motor data identification (p1910 = 1, p1960 = 1).
2. check the motor circuit configuration (star/delta).
3. check the motor load.
4. check the power cable connections.
5. check the length of the power cables.