Emerson 250-400kVA manual Check the One-Line Display for system status

Page 57

 

 

 

 

 

UPS Alarm and Status Messages

 

 

 

 

 

 

Table 7

Liebert NXL alarm and status messages (continued)

 

 

 

 

 

Event Message

Event Definition

Recommended Action

 

 

 

Press “SILENCE” to silence the audible alarm.

 

 

 

Check the One-Line Display for system status:

 

 

 

1.

UPS Off

 

 

 

 

a. If external Maintenance Bypass is available,

 

 

 

 

 

close the Maintenance Bypass Breaker

 

 

 

 

 

(MBB) to restore power to the load. Do not

 

 

 

 

 

attempt to restart the UPS without first

 

 

 

 

 

contacting your factory-authorized service

 

 

 

 

 

provider.

 

 

 

 

b. If external Maintenance Bypass is not

 

 

 

 

 

available, but the CB3 option is visible on the

 

 

 

 

 

One-Line Display, verify the bypass line is

 

 

 

 

 

green and close CB3 to restore power to the

 

 

 

 

 

load. Contact your factory-authorized

 

 

 

 

 

service provider.

 

 

 

2.

UPS On Bypass

 

 

 

 

a.

Verify the bypass line is green. If it is not,

 

 

 

 

 

contact your factory-authorized service

 

 

 

 

 

provider immediately and prepare to shut

 

 

 

 

 

down the load.

 

 

This summary event occurs when one or more

 

b. If external Maintenance Bypass is available,

 

 

 

 

close the Maintenance Bypass Breaker

 

 

internal temperatures have exceeded the

 

 

 

 

 

 

(MBB) to place the load on Maintenance

 

 

maximum temperature setpoint. This is the

 

 

 

 

 

 

Bypass. Do not attempt to re-transfer to UPS

Equip

 

second of two over temperature alarms. The first,

 

 

 

 

 

without first contacting your factory-

Ovtemp

 

“Equipment Overtemperature Warning,” sets

 

 

 

 

 

authorized service provider.

Limit

 

when the detected temperature is near the limit.

 

 

 

 

c.

If external Maintenance Bypass is not

 

 

The controls react to this condition in various

 

 

 

 

 

available, but the CB3 option is visible on the

 

 

ways, depending on which sensor is reporting the

 

 

 

 

 

 

One-Line Display, close CB3. Do not

 

 

over temperature condition.

 

 

 

 

 

 

attempt to re-transfer to UPS without first

 

 

 

 

 

 

 

 

 

 

contacting your factory-authorized service

 

 

 

 

 

provider.

 

 

 

3.

UPS On Battery

 

 

 

 

a.

Verify the bypass line is green. If it is not,

 

 

 

 

 

contact your factory-authorized service

 

 

 

 

 

provider immediately and prepare to shut

 

 

 

 

 

down the load.

 

 

 

 

b. If the bypass line is green, press "Transfer",

 

 

 

 

 

"Bypass", to transfer the load to bypass.

 

 

 

 

c.

If there is a CB3 present on the One-Line

 

 

 

 

 

Display, close CB3. If CB3 is not present

 

 

 

 

 

and external Maintenance Bypass is

 

 

 

 

 

available, close the MBB to place the load

 

 

 

 

 

on Maintenance Bypass. If both CB3 and

 

 

 

 

 

Maintenance Bypass are present, first close

 

 

 

 

 

CB3, then close the external MBB. If CB3 or

 

 

 

 

 

external Maintenance Bypass is not

 

 

 

 

 

available, shut down the UPS by pressing

 

 

 

 

 

"Shutdown", "UPS" and contact your factory-

 

 

 

 

 

authorized service provider.

51

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Contents Liebert NXL Contacting Liebert for Support Battery Cabinet PrecautionsTable of Contents Specifications Figures Page Important Safety Instructions Normal Mode General DescriptionModes of Operation Battery Mode Bypass ModeMaintenance Bypass OptionsIntroduction Main component locations FeaturesMimic display Monitor/mimic display example Utility fail Monitor/mimic display example Normal power flowMonitor/mimic display example Load on bypass, UPS On Menu tree Touchscreen Navigation Main Display ScreenRating Parameters Configurations Menu RatingSystem Settings parameters User SettingsAdjustable setpoints parameters Adjustable SetpointsCell Count Adjustment Event Management Status Reports MenuStartup Menu Shutdown menu Shutdown MenuTransfer Menu Transfer/retransfer commandsTime remaining display Battery Management MenuDisplay summary see Figure Metering ResetHelp SilenceLoad on bypass, UPS available OK to TransferInput power fail, load on battery Input Power Failure-Load on BatteryEmergency Module Off Off BatteryRemote Emergency Power Off Manual ProceduresStartup Procedure Startup commands Transfer Procedure Load Transfer ProceduresRe-Transfer Procedure Maintenance Bypass Load TransfersMaintenance Bypass Load Transfers-If Load is on UPS Bypass UPS Shutdown Procedure Shutdown ProceduresSystem Shutdown Procedure Automatic OperationsCurrent-versus-time curves of overload capacity Automatic Transfers to Bypass Overload ConditionAutomatic Retransfers to UPS Automatic Transfers to Bypass, UPS System FaultsSafety Precautions Routine Maintenance Liebert ServicesAir Filters Record LogUPS component service life Battery MaintenanceLimited Life Components Component Expected Life ReplaceBattery Safety Precautions Matching Battery Cabinets-Optional Battery voltage, nominal and floatBattery retorque values Detecting Trouble Torque specifications, unless otherwise labeledRack-Mounted Batteries Torque RequirementsReporting a Problem Upstream Feeder Circuit Breaker Setting InspectionsCorrective Actions Environmental specifications Battery OperationParameter Specification Environmental ConditionsBattery & DC Parameters Electrical specificationsLiebert NXL Model Size 250 Input ParametersLiebert NXL Model Size System ParameterPhysical Parameters & Standards, in mm Specifications Event Message Event Definition Recommended Action Liebert NXL alarm and status messagesObserve the One-Line Display. If the input line is Observe the One-Line Display. To identify which Do not Attempt to Close CB3 Until Reset Displayed on the Module Output Meter. If UPS controls monitor the DC Bus positive Resolve the issue that precipitated the EPO Check the One-Line Display for system status UPS, to transfer back to Inverter If this alarm occurs on an operational unit, it Attempt to manually close the disconnect by Module Output Meter. If the load is less than Output Power Factor. If the displayed power factor Until a service visit has been made and action taken When manual transfers are enabled Under normal conditions, no user action is required Observe the One-Line Display and the Active Event If the command to terminate Regeneration Mode If the alarm cannot be reset, or if the alarm condition UPS Alarm and Status Messages UPS Alarm and Status Messages Page Iti Ne tTi n That
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