Liebert 30-130kVA manual Epo

Operation

Table 7	Alarms, functions, and corrective actions (continued)
Actual
Alarm/fault
Name
Displayed		Description	Fault
On Front		of Alarm/	Or	Latch	Dial	Freeze	Event Log
Panel		Fault	Alarm	Mask	Mask	Mask	Mask	Meaning and Corrective Action(s)
								The instantaneous inverter current of any
								one phase has exceeded its Pulse by Pulse
								current limit value. An “Inverter Current
								Limit” alarm was already issued and pulse
								parallel operation was initiated. At the end
								of pulse parallel the load current has not be
		Inverter						reduced below 150% The load will transfer
Inv I limit xfer		Current Limit	Fault	NO	YES	NO	YES	to Static Bypass. If the fault or over load
		Transfer						clears the unit will retransfer to UPS. Check
								the total load compared to the UPS rating,
								reduce load where necessary. If the UPS
								does not retransfer when the load is below
								100% of the rated load or if the unit shuts
								down, contact Liebert Global Services
								Immediately.
								With the battery breaker closed and the
								Battery Overtemp…Breaker Trip” option
								enabled, the internal battery temperature
								has exceeded its Maximum set point value.
								The battery UV trip will be activate and the
		Battery						battery will be disconnected from the UPS.
Batt ovtemp								Battery Back up is no longer available.
		Overtemp CB	Fault	YES	YES	NO	YES
cb trip								Check the battery to determine the possible
		Trip
								cause of the overload and remove if
								possible. Once the battery has cooled
								below the set point temperature, the battery
								may be brought on line again. If the
								problem recurs contact Liebert Global
								Services.
								With BGF option installed, BGF breaker trip
								enabled, and batt breaker closed, Comms
Batt gnd	CB	Batt gnd fault						DPS sees its BGF input asserted by the
			Fault	NO	YES	NO	YES	SWGR. It will issue a batt breaker UV trip
trip		CB trip
								and motor op disable. To correct, repair and
								restart batt via the MM. Contact Liebert
								Global Services for assistance.
								With Bypass source available, the UPS has
								determined that the bypass power supply
Byp pwr		Bypass Power						has failed. The SBS will be turned off and
			Fault	NO	YES	NO	YES	the contactors opened. SBS will not be
supply fail		Supply Fail
								available. This fault will inhibit transfers and
								start-up. Contact Liebert Global Services
								immediately.
								The Emergency Power Off switch has been
								pressed, which caused the UPS system to
EPO		EPO						shut down and remove all power from the
			Fault	NO	YES	NO	YES	critical load. Determine the cause of the
shutdown		Shutdown
								emergency condition and correct it if
								possible. Contact Liebert Global Services if
								you require assistance.

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