Emerson 250-400kVA manual Output Power Factor. If the displayed power factor

			UPS Alarm and Status Messages
Table 7	Liebert NXL alarm and status messages (continued)
Event Message		Event Definition	Recommended Action
		With LBS operation enabled, conditions required	Press “SILENCE” to silence the audible alarm.
			Check both Systems and verify normal operation:
		to allow LBS operation are not met.
			a. Both Systems running online on inverter;
		Voltage or Frequency differences sensed by the
			b. Neither System in Maintenance Bypass;
		LBS control are preventing the ability of LBS to
LBS Inhibited			c. No Bypass, Input, or Synchronization errors
		function correctly.
			present on either system.
		This alarm is self-clearing. When the condition is
			If the cause of the alarm cannot be determined by
		no longer present, the alarm and any control
			checking both Systems, contact your factory-
		activity tied to the alarm reverts to normal.
			authorized service provider.
		Load Bus Synchronization (LBS) is enabled and
		is active.
		This status message informs the user that one	Under normal circumstances, none.
		system in an LBS system has lost its
LBS Operating		synchronization source (usually its own Bypass)	If this message is active, and there is no clear
		and is now synchronized to the other system by	reason why the LBS circuit should be active, contact
		the LBS controls.	your factory-authorized service provider.
		This status message is self-clearing. When the
		condition is no longer present, the alarm and any
		control activity tied to the alarm reverts to normal.
		With a load of 80% or greater, the controls have
		calculated the output Power Factor to be less than	Press “SILENCE” to silence the audible alarm.
		.95 leading.	Check the Output Meter readings and verify the
		Leading Power Factors result in wasted energy. If
Leading Pwr			Output Power Factor. If the displayed power factor
		the Power Factor is less than .95 leading, the	is less than .95 leading, and the load is greater than
Factor		UPS output is de-rated to compensate for output
			80%, reduce the load or investigate.
		losses.
			Contact your factory-authorized service
		This alarm is self-clearing. When the condition is
			representative.
		no longer present, the alarm and any control
		activity tied to the alarm reverts to normal.
Load on Bypass		The load is being supplied by bypass.	None.
Load on Maint Byp		The load is on Maintenance Bypass.	None.
		One or more battery circuit breakers are open.
		This alarm applies if the system includes more	Press “SILENCE” to silence the audible alarm.
		than one battery circuit breaker, and at least one
Low Batt Capacity		is closed, but one or more are open.	To clear this alarm, verify all battery breakers are
		This alarm is self-clearing. When the condition is	closed. Investigate any open breakers.
		no longer present, the alarm and any control
		activity tied to the alarm reverts to normal.
		The Battery has reached End of Discharge	Press “SILENCE” to silence the audible alarm.
		(EOD).
			Once power is restored, attempt a normal restart of
Low Batt		There is no longer enough energy left in the
			the UPS.
Shutdown		battery to run the Inverter with the current load.
			If the restart fails, contact your factory-authorized
		If bypass is available, the UPS attempts to
			service provider.
		transfer the load to bypass at EOD.
			Check to see if bypass is available by observing the
		The battery is nearly depleted, and the unit shuts	One-Line Display. Acceptable bypass voltage is
		down very soon.	indicated by a green power line feeding the Static
		The Low Battery Warning setpoint is adjustable	Bypass Switch (BPSS) box.
Low Battery		under User Settings. This alarm means the	If bypass is available, press “Transfer,” “Bypass” to
		calculated time remaining on battery is now less	transfer to bypass. If the bypass is qualified, the
Warning
		than the Low Battery Warning setpoint.	UPS transfers to the bypass source.
		This alarm is self-clearing. When the condition is	If bypass is not available, prepare to shut down
		no longer present, the alarm and any control	critical loads, or remove non-essential loads in
		activity tied to the alarm reverts to normal	order to extend battery run time so that critical loads
			may be shut down in an orderly manner.

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