Rockwell Automation 20G PowerFlex 750-Series AC Drives - Manual (Page 167)

Rockwell Automation Publication 750-RM002B-EN-P - September 2013 167
Diagnostics and Protection Chapter 3
If a fault action has been selected as a result of an input phase loss, P952 [Fault
Status A] Bit 4 “InPhaseLoss” is set.
If an alarm action is selected as a result for the input phase loss, P959 [Alarm
Status A] Bit 4 “InPhaseLoss” is set.