Liebert Series 600T manual Emergency Off, Ambient Over, Temperature, Blower Failed, Equipment Over

Table 1		Alarm Messages - Meaning and Corrective Action (continued)
Alarm		Cabinet	Special	Meaning and
Message		Location	Functions	Corrective Action in Brackets [ ]
UPS SYSTEM (Contʼd.)
Hardware		MMU	D#	At least one of the following alarm conditions is present: Inverter
Shutdown				Fault, Rectifier Fuse Blown, Reverse Power, Overload Shutdown,
				logic power supply failure, or inverter output symmetry failure. The
				UPS module is taken off-line and is shut down.
				[Contact Liebert Global Services at once. Do not attempt to reset the
				circuit breakers.]
Emergency Off		SCC	D*, L, S	The Emergency Module Off (or Emergency Power Off) switch has
		MMU		been pressed, which caused the UPS system to shut down and
				transfer the load to the bypass line (or all power to the critical load
				has been shutdown).
				[Determine the cause of the emergency condition and correct it if
				possible. Contact Liebert Global Services if you require assistance.]
COOLING
Ambient Over-		MMU	R, S	The intake air to the UPS module exceeds the specified maximum
Temperature				temperature.
				[This condition only causes an alarm, but should be corrected
				immediately to prevent damage to equipment due to overheating.]
Blower Failed		MMU	S	A fault in one or more of the blower motors has occurred. This
				condition only causes an alarm, but if not promptly corrected it could
				cause an equipment over-temperature condition that would shut
				down the UPS module.
				[Check the blowers for proper operation. Contact Liebert Global
				Services if you require assistance.]
Equipment Over-		MMU	S	Sensors on power semiconductor heatsinks detect temperatures
Temperature				above the steady state limits for these components. The control logic
				sets off the alarm but does not shut down the UPS module if the
				condition lasts less than 10 minutes.
				[Check the air intake, air exhaust, and filters. Reduce the load or
				transfer it to bypass. Contact Liebert Global Services if the alarm
				persists.]
Over-Temperature		MMU	D, F	An Equipment Over-Temperature condition has persisted for more
Timeout				than 10 minutes. The UPS module is taken off-line and is shut down.
				[Check the air intake, air exhaust, and filters before attempting to
				start-up the UPS.]
REMOTE MONITOR		PANELS
(Refer also to SCC and Module Remote Monitor Indications and Other Alarms That Activate Summary Alarms in
3.1.5 - System Configuration Screens)
Load On UPS		—	R (SCC)	The UPS is operating properly. No corrective action is necessary.
New Alarm		—	R (SCC)	Another new alarm message has been registered on the UPS
			R (MMU)	system.
				[Clear the new alarm condition, if possible.]
System Summary		—	R (SCC)	One or more of the UPS system alarm messages has been activated
Alarm				or a control logic failure has been detected by a watchdog timer.
				[Use the Present Status screen to determine which alarms are
				active. Clear the new alarm condition if possible to do so.]
Module Summary		—	R (MMU)	One or more of the UPS module alarm messages has been
Alarm				activated.
				[Use the Present Status screen to determine which alarms are
				active. Clear the new alarm condition, if possible to do so.]
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 73

DISCONTINUED

PRODUCT