68 Chapter 4 Operator Control And Display Panel
Liebert EXM 80kVA ~ 200kVA UPS User Manual
Alarm
Explanation
Silence Inactive
SILENCE ON/OFF key on the operator control and display panel pressed in alarm silence
state
Bypass Mode
The UPS is in bypass mode
Normal Mode
The UPS is in normal mode
Battery Mode
The UPS is in battery mode
Check UPS Output
UPS shutdown with no output power
Output Disabled
EOD event happened. Check the battery voltage
Other Bypass STS Fail The adjacent bypass STS open circuit fault or short-circuit fault
Input Voltage
Abnormal
The mains voltage is outside specifications and results in rectifier shutdown
Input Undervoltage
At least one phase main input voltage is within 132V ~ 176V, thus the load should be
derated
Input Freq. Abnormal
The mains frequency is outside specifications and results in rectifier shutdown
Input Phase Reversed The AC input phase rotation is reversed
Input Backfeed
Battery voltage fed back to rectifier input
Input Neutral Lost
AC rectifier input neutral line not detected
Input Current
Abnormal
Battery load sharing imbalance or rectifier input current abnormal
Input Current Limit
Input current over limit
Bypass Unable to
Trace
The bypass frequency is outside specifications. This alarm automatically resets once the
bypass voltage goes normal
Bypass Abnormal
The amplitude or frequency of the bypass voltage exceeds the limit. This alarm
automatically resets once the bypass voltage returns to normal
Bypass STS Fail
At least one of the STSs at the bypass side is open or shorted. This fault is locked until
power-off
Byp. Abnormal
Shutdown
Both the bypass and inverter voltages are abnormal, and the output is off
Bypass Phase
Reversed
The phase rotation of the bypass voltage is reversed
Bypass overcurrent
The bypass current is outside the rated current
Bypass backfeed
The bypass back-feed is faulty
Bypass
Overtemperature
The bypass has overtemperature
Bypass in Charge
The bypass detects an inverter signal when the system runs normally. When the output
voltage is abnormal, the system will transfer to bypass mode for power supply
Bypass Neutral Lost
The bypass lacks of N
Bypass in Setting
The bypass module is initialized and synchronized
Rectifier Fault
Bus voltage abnormal or battery SCR short circuit
DC Bus Overvoltage
The rectifier, inverter and battery converter shut down because the DC bus voltage is too
high. The load transfers to bypass
DC Bus Abnor.
Shutdown
The DC bus voltage is abnormal and results in inverter shutdown. The load transfers to
bypass
Inverter
Asynchronous
The output voltage and bypass voltage are misaligned in phase. This alarm resets
automatically once the condition is no longer true
Inverter Fault
Inverter output voltage outside specifications. Load transfers to bypass
Inverter Relay Fail
At least one of the inverter relays is opened or shorted. This fault is locked until mains
power-off
Output Fuse Fail
At least one of the inverter output fuses is blown
Output Volt.
Abnormal
At least one phase of the output voltages is abnormal
Output Overload
This alarm appears when the load arises above 105% of the nominal rating. The alarm
Summary of Contents for EXM 0080kTK16FN01000
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