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# PlantPAx auto restart in operator mode on fault
The problem:
When equipment is running in Operator mode and the power drops, the equipment does not restart once the power is returned.
Logic for motor start is in P_Motor
Wrk_Run is the tag that commands the motor to run
![[PlantPAx_auto_restart_in_operator_mode_on_fault_image_3.png]]
if we set Cfg_ShedOnFailToStart to 0 then logic shouldn't release the call to run on fail to start
![[PlantPAx_auto_restart_in_operator_mode_on_fault_image_4.png]]
may also need to check to see if either Nrdy_PrioStop or Nrdy_IOFault go to 1 when power drops
![[PlantPAx_auto_restart_in_operator_mode_on_fault_image_5.png]]
here is the part of rung 25 that unlatches Wrk_Run when there is a fault
MCC PLC UPS - affects Influent Pumps, Secondary Sump Pumps, and Reclaimed Water PumpsMCC Comm UPS - affects all SCADA communications. Control should remain operational.Heating/Mixing UPS - affects heating/mixing equipment and centrifuge feed pumpsGrit King UPS - affects the Grit King controlCCT UPS - affects the CCT chemical injection and monitoringOffice PLC UPS - affects all SCADA communications- FFR UPS - affects FFR pumpsInfluent Pumps No P_Motors