Rockwell Automation MV SMC Flex Motor Controller (for Series K or later) - Manual (Page 109)

Rockwell Automation Publication 1560E-UM051F-EN-P - June 2013 99
Diagnostics Chapter 7
Fault Description
Ground Fault Ground faults are based on feedback from the user supplied 825 CT detecting ground
fault currents. Ground fault parameters of level and time delay must be programmed
for proper operation.
Excess Starts/Hour Excess starts/hour is displayed when the number of starts in a one hour period
exceeds the value programmed.
Power Loss Power loss indicates that an input power phase is not present. The controller’s LCD
display will identify the missing phase. If all three phases are absent when a start
command is issued, the LCD will display “Starting” without motor rotation.
Line Loss (F41, F42, F43) During expected SCR gate periods, the power pole voltage and currents are
monitored. If the SCR conduction is discontinued, a fault is indicated.