UPS 30-300kVA User Manual
Operator Control and Display Panel
53
Please check if rectifier’s fuses, diode, IGBT or PFC diodes are
broken.
Please check if input voltage is abnormal.
70
DC Bus Over Volt
Voltage of DC bus capacitors is over limitation. UPS shutdown
rectifier and inverter.
71
REC Soft Start
Fail
While soft start procedures are finished, DC bus voltage is lower
than the limitation of calculation according utility voltage. Please
check
1.
Whether rectifier diodes are broken
2.
Whether PFC IGBTs are broken
3.
Whether PFC diodes are broken
4.
Whether drivers of SCR or IGBT are abnormal
5.
Whether soft start resistors or relay are abnormal
72
Relay Connect Fail
Inverter relays are opened and cannot work or fuses are broken.
73
Relay Short
Circuit
Inverter relays are shorted and cannot be released.
74
PWM Sync Fail
PWM synchronizing signal is abnormal
75
Intelligent Sleep
UPS works in intelligent sleep mode. In this mode, the power
modules will be standby in turn. It will be more reliability and
higher efficiency. It must be confirmed that remained power
modules’ capacity is big enough to feed load. It must be conformed
that working modules’ capacity is big enough if user add more load
to UPS. It’s recommended that sleeping power modules are waken
up if the capacity of new added loads is not sure.
76
Manual Transfer to
INV
Manually transfer UPS to inverter. It’s used to transfer UPS to
inverter when bypass is over track. The interrupt time could be over
20ms.
77
Input Over Curr
Tout
Input over current timeout and UPS transfer to battery mode.
Please check if input voltage is too low and output load is big.
Please regulate input voltage to be higher if it’s possible or
disconnect some loads.
78
No Inlet Temp.
Sensor
Inlet temperature sensor is not connected correctly.
79
No Outlet Temp.
Sensor
Outlet temperature sensor is not connected correctly.
80
Inlet Over Temp.
Inlet air is over temperature. Make sure that the operation
temperature of UPS is between 0-40°C.
81
Capacitor Time
Reset
Reset timing of DC bus capacitors.
82
Fan Time Reset
Reset timing of fans.
83
Battery History
Reset
Reset battery history data.
84
Byp Fan Time
Reset
Reset timing of bypass fans.
85
Battery Over
Battery is over temperature. It’s optional.
