Liebert 610 manual UPS System

Operation

Table 4 Alarm messages and corrective actions, continued

Alarm

Message

Special

Functions

Meaning and Corrective Action

BYPASS, continued

		The UPS output is not synchronized to the bypass power source, the static bypass switch is
Static Switch		disconnected, or it has failed internally. Emergency and overload transfer to the bypass
	D, S	source is not available. If the module has a manual Static Switch Disconnect, set it to ON
Unable		(closed). If the module does not have a manual disconnect switch, open and re-close the
		static switch fuseholder. If the alarm conditions are automatically corrected, reset the alarm
		to clear it. Contact Liebert Global Services if the alarm stays on.
Bypass Not		The bypass power source voltage is not within specifications. Correct the bypass AC power
Available		source.
Bypass Phase		The power conductors on the bypass line are not wired to the UPS in the required
		sequence. This alarm should appear only during initial start-up or after a repair to the source
Sequence	D, L, S
		power system. Disconnect power from the bypass line and correct the wiring. Liebert Global
Wrong
		Services must be present during initial start-up of your UPS System.
UPS SYSTEM
Input Current	D, E	At least one input phase differs from the average current by 10% or more for four (4) hours.
		Contact Liebert Global Services. If the condition persists, transfer the load to the bypass
Unbalanced
		line.
Control Power		The logic control power supply from the UPS output is not operating properly. The UPS
	D, L, S	module continues operating but will shut down if the input power fails. Contact Liebert
Fail
		Global Services immediately.
Output Over/		Output frequency differs from the nominal (60 Hz) by more than 0.5 Hz. No transfer or
Underfre-	D, L, S	shutdown occurs. Contact Liebert Global Services at once.
quency
		The UPS module output voltage is under the minimum permitted (-12%) deviation from
Output	D, F, L, S	nominal. The load automatically transfers to the bypass line. If the alarm condition is no
Undervoltage		longer present, reset the alarm and retransfer the load from bypass to UPS. Contact Liebert
		Global Services if alarm persists.
		The UPS module output voltage is above the maximum permitted (+10%) deviation from
Output	D, F, L, S	nominal. The load automatically transfers to the bypass line. The UPS module is shut down
Overvoltage		and isolated. Contact Liebert Global Services at once. Do not attempt to reset circuit
		breakers.
		The UPS output current exceeds the rated system load current. This condition causes an
Overload	D, R, S	alarm only, the UPS does not shut down. Determine cause of the overload. Reduce the load
		until the overload condition is corrected. Reset the UPS alarm.
		The load on the UPS has exceeded the current versus time window of system overload
Overload	D, F, L, S	capacity. The UPS system transfers the load to bypass. Reduce the load. If the system does
Transfer		not initiate an automatic load retransfer, manually retransfer the critical load from the bypass
		line to the UPS. Reset the alarm.
		Excessive reverse power flow from the critical bus into the UPS inverter has occurred,
Reverse	D, F, L, S	probably because of low inverter output voltage or a phase mismatch. The UPS module is
Power		shut down and isolated. Contact Liebert Global Services immediately. Do not attempt to
		reset circuit breakers.
Rectifier Fuse	D, F, S	At least one of these fuses has opened. The UPS automatically transfers the critical load to
Blown		the bypass line. Circuit breakers trip open to shut down and isolate the UPS module.
		Contact Liebert Global Services immediately. Do not attempt to reset the circuit breakers.
Inverter Fault	D, F, S
		At least one of the following alarm conditions is present: Inverter Fault, Rectifier Fuse Blown,
Hardware		Reverse Power, Overload Shutdown, logic power supply failure or inverter output symmetry
	D*	failure. The load automatically transfers to the bypass line. The UPS module is shut down
Shutdown
		and isolated. Contact Liebert Global Services at once. Do not attempt to reset the circuit
		breakers.
D = auto-dial	L = latches
E = logs only	R = remote
F = freezes	S = summary

D* = auto-dial initiated by Auto Transfer to Bypass if load is on UPS when alarm occurs

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