今天我也碰到了F30072 ， 转速降到几十转时，3，4次出现一次。
F30072 Setpoints are no longer being transferred to the power unit

Drive objects:
All objects

-
Response:
OFF2


Acknowledgement:
IMMEDIATELY

Cause:
The following applies for CU31x and CUA31:
More than one setpoint telegram was not able to be transferred to the power unit.


Remedy:
The following applies for CU31x and CUA31:
Check the interface (adjustment and locking) to the power unit.


不知道如何解决