Why would I see Output Phase Loss on my E-flex system that is equipped with Bypass (Power circuit Y)?
Issue:
Possible cause of an Output Phase Loss on an E-flex system that is equipped with Bypass (Power circuit Y)
Product Line:
8839EFD* E-flex systems.
Environment:
Units equipped with power circuit Y (Full voltage bypass)
Cause:
Customer is seeing random Output Phase Loss faults with no apparent cause.
Resolution:
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 the 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.
Possible cause of an Output Phase Loss on an E-flex system that is equipped with Bypass (Power circuit Y)
Product Line:
8839EFD* E-flex systems.
Environment:
Units equipped with power circuit Y (Full voltage bypass)
Cause:
Customer is seeing random Output Phase Loss faults with no apparent cause.
Resolution:
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 the 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.
Released for: Schneider Electric USA
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