Emerson 250-400kVA manual Features, Main component locations

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Operation

2.0OPERATION

The Liebert NXL UPS is equipped with a microprocessor-based display touchscreen designed for con- venient and reliable operation. The display is driven by an easy-to- follow, menu-prompted software.

2.1Features

The Liebert NXL interface display enables the operator to perform such tasks as:

•Quickly check operational status

•Monitor the power flow through the UPS system and all meter readings

•Execute operational procedures

•Check status reports and history files

•Adjustment programmable parameters (access limited by security access function)

•Adjustment output voltage before performing a manual load transfer.

The touchscreen is a white-background display with multicolor text. The display turns on automati- cally, but after 15 minutes of inactivity the backlight will go out and the display will appear very dim. Touching the screen will reactivate the backlight; the backlight will again be active for 15 minutes. If any screen other than the mimic screen is accessed, that screen will be displayed for 5 minutes with- out any interaction. If there is no activity for 5 minutes, the display will revert to the basic mimic screen.

Figure 2 Main component locations

EXTERNAL

INTERFACE

BOARD

(CB2)	(CB1)

5

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Contents Liebert NXL Contacting Liebert for Support Battery Cabinet PrecautionsTable of Contents Specifications Figures Page Important Safety Instructions Modes of Operation Normal ModeGeneral Description Options Bypass ModeBattery Mode Maintenance BypassIntroduction 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 Startup Menu Event ManagementStatus Reports Menu Shutdown menu Shutdown MenuTransfer Menu Transfer/retransfer commandsTime remaining display Battery Management MenuDisplay summary see Figure Silence ResetMetering HelpLoad 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 Maintenance Bypass Load Transfers Load Transfer ProceduresTransfer Procedure Re-Transfer ProcedureMaintenance Bypass Load Transfers-If Load is on UPS Bypass Automatic Operations Shutdown ProceduresUPS Shutdown Procedure System Shutdown ProcedureCurrent-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 LogComponent Expected Life Replace Battery MaintenanceUPS component service life Limited Life ComponentsBattery Safety Precautions Battery retorque values Matching Battery Cabinets-OptionalBattery voltage, nominal and float Torque Requirements Torque specifications, unless otherwise labeledDetecting Trouble Rack-Mounted BatteriesCorrective Actions Reporting a ProblemUpstream Feeder Circuit Breaker Setting Inspections Environmental Conditions Battery OperationEnvironmental specifications Parameter SpecificationInput Parameters Electrical specificationsBattery & DC Parameters Liebert NXL Model Size 250Physical Parameters & Standards, in mm Liebert NXL Model SizeSystem Parameter 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 That Ne tIti Ti n