Liebert SERIES 300 UPS manual Alarm Messages

3.11Alarm Messages

:KHQýWKHýGHIDXOWýVFUHHQýLQVWUXFWVý\RXýWRý&KHFNý0HVVDJHVñýSUHVVýWKHý'RZQýSDGýWRýVHHýWKHý$ODUPý 0HVVDJHVýVFUHHQïý$FWLYHý$ODUPý0HVVDJHVýZLOOýEHýGLVSOD\HGýDORQJýZLWKýDýVHTXHQFHýQXPEHUýDQGý WLPHýRIýRFFXUUHQFHïý1RWHýWKDWýWZRýRUýPRUHý$ODUPý0HVVDJHVýFDQýKDYHýWKHýVDPHýVHTXHQFHýQXPEHUý ZKLFKýPHDQVýWKH\ýRFFXUUHGýVLPXOWDQHRXVO\ïý&RQWLQXHýSUHVVLQJýWKHý'RZQýSDGýXQWLOýDOOýDFWLYHý $ODUPý0HVVDJHVýKDYHýEHHQýGLVSOD\HGï

7DEOH åýVKRZVý$ODUPý0HVVDJHVýõZLWKýUHODWHGýDODUPVýJURXSHGýWRJHWKHUôýDQGýRSHUDWRUýFRUUHFWLYHý DFWLRQñýLIýDQ\ïý&RQWDFWý/LHEHUWý&XVWRPHUý6HUYLFHýDQGý6XSSRUWýDWýìðåííðèéêðëêæåýLIý\RXýUHTXLUHý DVVLVWDQFHïý

Table 8	Alarm Messages
Alarm		Meaning and
Message		Corrective Action in Brackets [ ]
AC INPUT
Input power out of tolerance		Frequency or voltage of the input power is outside the acceptable range. The
		battery supplies power to the critical load through the UPS Module.
DC BUS
Charger in reduced current mode		Customer has selected reduced current operation of the charger from a contact
		external to the UPS.
Battery charger problems		The battery is not being charged. The voltage produced by the charger is
		insufficient to maintain a charge on the battery.
		[Contact Liebert Customer Service and Support at 1-800-543-2378.]
Low battery warning issued		Battery has been discharging and the Low Battery Warning Time (factory set at
		5 minutes, adjustable range 1 to 99 minutes) has been reached. Note time
		stamp on alarm message.
		[Follow appropriate procedures to shut down the critical load in an orderly
		sequence.]
Low battery shutdown		Battery has discharged to the minimum allowable voltage and the UPS is shut
		down. No power is being supplied to the critical load.
		[When input power becomes available, perform a UPS start-up procedure.]
DC bus overvoltage		DC bus voltage has exceeded the specified limit and the charger has been
		turned off. The charger will automatically restart when the DC bus voltage
		returns to within tolerance.
		[Contact Liebert Customer Service and Support at 1-800-543-2378 if this
		condition persists for more than 2 minutes.]
BYPASS
Bypass frequency out of tolerance		Input power frequency is outside of the specified tolerance (adjustable range .5
		to 5 Hz). Automatic transfers to the Static Bypass Line are prohibited.
		[Do not operate the Rotary Switch while this condition is present.]
Load transferred to bypass due to		Critical load connected to the UPS has exceeded the UPS power rating. The
overload		load has been automatically transferred to the Static Bypass Line. Power to the
		load is not being conditioned by the UPS. An automatic retransfer will be
		attempted when the load is reduced.
		[Determine cause of the overload and reduce the load.]
Load transferred to bypass due to DC		DC bus voltage has exceeded the specified limit. The load has been
overvoltage		automatically transferred to the Static Bypass Line. An automatic retransfer will
		be attempted when the DC bus voltage returns to within tolerance.
		[Contact Liebert Customer Service and Support at 1-800-543-2378 if this
		condition persists for more than 2 minutes.]
Excessive retransfers attempted		Several automatic retransfer attempts (15 attempts during 20 minutes or less)
		have been made to retransfer the load from the Static Bypass Line back to the
		UPS. The UPS has not been able to consistently sustain the load because of
		an overload condition or an inverter failure. The load will remain on the Static
		Bypass Line. Power to the load is not being conditioned by the UPS.
		[Check other messages for inverter failure. Determine cause of the overload
		and reduce the load.]
Static Switch failure		A fault has been detected in the Static Transfer Switch. Automatic transfers to
		the Static Bypass Line are prohibited.
		[Contact Liebert Customer Service and Support at 1-800-543-2378.]

58 Operation