Should I see Output Phase Loss on my E-flex system that is equipped with Bypass (Power circuit Y)?
Why would I see Output Phase Loss on my E-flex system that is equipped with Bypass (Power circuit Y)?
8839EFD* E-flex systems.
Units equipped with power circuit Y (Full voltage bypass)
Customer is seeing random Output Phase Loss faults with no apparent cause.
Output Phase Loss faults should not be indicated on an E-flex system with Full Voltage Bypass. Under menu 1.8, Fault management menu, Output Phase Loss should be disabled on E-flex systems WITH bypass contactor. This should be disabled from the factory to prevent a known condition where Output Phase Fault can be improperly triggered in E-flex systems equipped with full voltage bypass contactors. Phase loss protection for the motor is provided by other components within the E-flex system in this particular configuration.