Cause : STOP A initiated comes when the drive is stopped via a STOP A (pulses are suppressed via the safety shutdown path of processor 1).

Possible causes:
- stop request from processor 2.
- Pulses not suppressed after test stop selection.

- remove the cause of the fault on the monitoring channel of processor 2.
- carry out a diagnostics routine for message C01706.
- carry out a diagnostics routine for message C01714.
- carry out a diagnostics routine for message C01701.
- check the shutdown path of processor 1.
- replace Power Module.
- replace Control Unit.