Liebert Series 600T Bypass, Auto Retransfer, Primed, Manual Reset, Static Switch, Unable, Fail

Table 1		Alarm Messages - Meaning and Corrective Action (continued)
Alarm		Cabinet	Special	Meaning and
Message		Location	Functions	Corrective Action in Brackets [ ]
BYPASS (Contʼd.)
Auto Transfer to		SCC	D, E, F	The critical load has been automatically transferred to the bypass
Bypass				line.
				[Use the History Status screen to determine the cause for the
				transfer. Clear all of the alarms before attempting to retransfer the
				load from bypass to UPS.]
Auto Retransfer		SCC	—	An automatic retransfer will be initiated when the OK to Transfer
Primed				condition has been present for 10 seconds, if the overload has
				dropped below 100% of the rated SCC current and if enough UPS
				modules are on-line.
Manual Reset/		SCC	—	A manual retransfer is required. Either a system overload condition
Retransfer				has lasted more than 5 minutes, or no more auto-retransfer attempts
				are available. Note that this alarm is only used if auto-retransfer
				attempts are enabled.
				[Perform a manual retransfer if all necessary conditions are present.]
Static Switch		SCC	S	The UPS output is not synchronized to the bypass power source.
Unable				The static bypass switch is disconnected, or it has failed internally.
				[Emergency and overload transfer to the bypass source is not
				available. Manually set the Static Switch Disconnects to ON (closed)
				if the static switch is disconnected. If the alarm conditions are
				automatically corrected, reset the alarm to clear it. Contact Liebert
				Global Services if the alarm stays on.]
Bypass Not		SCC	—	The bypass power source voltage is not within specifications.
Available				[Check the bypass power source.]
Bypass Phase		SCC	—	The power conductors on the bypass line are not wired to the UPS in
Sequence Wrong				the required sequence. This alarm should appear only during initial
				start-up or after a repair to the source power system.
				[Disconnect power from the bypass line and correct the wiring. A
				Liebert Global Services representative must be present during initial
				start-up of your UPS System.]
UPS SYSTEM
Input Current		MMU	E	At least one input phase differs from the average current by 10% or
Unbalanced				more for four (4) hours. Contact Liebert Global Services. If the
				condition persists, transfer the load to the bypass line.
Control Power		SCC	L, S	The logic control power supply from the UPS output is not operating
Fail		MMU	L, R, S	properly. The UPS module continues operating but will shut down if
				the input power fails. The SCC continues operating but will shut
				down if the bypass power fails. Contact Liebert Global Services
				immediately.
Output Over/		SCC	L, S	Output frequency differs from the nominal (60 Hz) by more than 0.5
Under Frequency				Hz. No transfer or shutdown occurs.
				[Contact Liebert Global Services at once.]
Output Under-		SCC	D, F, L, S	The UPS system output voltage is under the minimum (-12%)
Voltage				deviation from nominal. The load automatically transfers to the
				bypass line.
				[If the alarm condition is no longer present, reset the alarm and
				retransfer the load from bypass to UPS. Contact Liebert Global
				Services if alarm persists.]
Output Over-		SCC	D, F, L, S	The UPS system output voltage is above the maximum (+10%)
Voltage				deviation from nominal. The load automatically transfers to the
				bypass line. All UPS modules are taken off-line and are shut down.
				[Contact Liebert Global Services at once. Do not attempt to reset
				circuit breakers.]
Table 1 Abbreviations
D = auto-dial;	L = latches
E = reports only;	R = remote
F = freezes;	S = summary

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

D# = auto-dial initiated through Module N (1-6) off-line

Operation 71

DISCONTINUED

PRODUCT