Emerson 60HZ, 480V user manual UPS status messages, UPS Status Messages, Event Message

UPS Status Messages

Table 39 UPS status messages

Event Message	Description / Suggested Action (if any)
	This alarm is triggered by an inverter software routine when the amplitude or frequency of
	bypass voltage exceeds the limit.
	This alarm automatically resets once the bypass voltage goes normal.
	First check whether there are relevant alarms such as “Bypass disconnect open,” “Bypass
	phase reverse” and “Mains neutral lost.” If they appear, solve them first.
	Then verify that the bypass voltage and frequency displayed on the panel is within the bypass
Bypass Abnormal	limit. Note here the rated voltage and frequency are specified by “Output voltage level” and
	“Output frequency level” respectively.
	If the displayed voltage is believed to be abnormal, then verify the bypass voltage and frequency
	presented to the UPS. Check the external bypass supply if it is found to be faulty. If the utility is
	likely to trigger this alarm frequently, the bypass limit can be increased through the configuration
	software according to the customer’s agreement.
	Contact Liebert Services at 800-543-2378 for assistance.
	This alarm is triggered by an inverter software routine when the inverter and bypass waveforms
	are misaligned by more than 6 degrees in phase. This alarm resets automatically once the
Inverter Asynchronous	condition clears.
	First check if the alarm “Bypass unable to trace” or “Bypass abnormal” occurs. If so, solve it first.
	Verify the waveform of the bypass voltage.
	Contact Liebert Services at 800-543-2378 for assistance.
Inverter Fault	This alarm indicates a fault condition exists within the inverter.
	Contact Liebert Services at 800-543-2378 for assistance.
Output Voltage Abnormal	This alarm indicates the inverter voltage waveform is abnormal.
	Contact Liebert Services at 800-543-2378 for assistance.
Input Current Abnormal	This alarm indicates the rectifier input current is abnormal.
	Contact Liebert Services at 800-543-2378 for assistance.
	The temperature of the inverter filter inductor or inverter common mode inductor is too high to
	keep inverter running.
	This alarm is triggered by the signal from a thermostat mounted in the inverter filter inductor.
	The UPS would recover automatically after a 5 minute delay from the disappearance of the
	overtemperature signal.
Inv. Inductor Overtemp.	If the overtemperature condition is true then check for and verify:
	High ambient air temperature.
	Blocked cooling airway
	Any fan failure
	Prolonged inverter overload.
	Contact Liebert Services at 800-543-2378 for assistance.
	The temperature of the inverter heat sink is too high to keep inverter running.
	This alarm is triggered by the signal from a temperature monitoring thermostat on the inverter
	bridge heat sink.
	The UPS will recover automatically after a 5 minute delay from the disappearance of the
	overtemperature signal.
Inverter Overtemp.	If the overtemperature condition is true then check for and verify:
	high ambient air temperature.
	blocked cooling airway.
	any fan failure.
	prolonged inverter overload.
	Contact Liebert Services at 800-543-2378 for assistance.
Fan Fault	At least one of the cooling fans has failed. Contact Liebert Services at 800-543-2378 for
	assistance.
Inverter STS Fail	At least one of the static switches of inverter side is open or short circuit. This fault is locked until
	power off. Contact Liebert Services for assistance at 800-543-2378 for assistance.
	At least one of the static switches of bypass side is open or short-circuited. This fault is locked
Bypass STS Fail	until power off.
	Contact Liebert Services at 800-543-2378 for assistance.
Output Fuse Fail	At least one of the output fuses is open. Contact Liebert Services at 800-543-2378 for
	assistance.
Control Power 2 Fail	Control Power 2 is abnormal or lost. Contact Liebert Services at 800-543-2378 for assistance.

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