Emerson NX manual Main display screen, typical

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Operation

Figure 4 Main display screen, typical

9

1

53

2


		8	4
6
6

7

1.	Bypass Input: voltage and frequency readings	4.	Battery: voltage and current readings
2.	Line power Input: voltage, current and fre-	5.	System Status
quency readings		6.	Control Buttons
3.	Output: voltage, current and frequency read-	7.	Menu Buttons
ings		8.	Animated One Line Mimic
		9.	About Button

Figure 5 Normal Mode

Module Bypass

AC Input

BFB

Module Rectifier

AC Input

Figure 6 Utility fail

Module Bypass

AC Input

BFB

Module Rectifier

AC Input

DC

Bus

To DC Supply

DC

Bus

UPS Module

UPS Output Critical

Load

UPS Module

UPS Output Critical

Load

To DC Supply

Liebert®NX™

8

Image 14

Contents Liebert NX Product Warranty Registration Table of Contents Options MaintenanceSpecifications Figures Page Important Safety Instructions Battery Cabinet Precautions Typical single module UPS system one-line diagram General DescriptionBattery Mode Normal ModeBypass Mode Maintenance BypassOptions Features Main component locations-225 to 300kVA Liebert NXFront Doors Removed Main display screen, typical System Status Touchscreen NavigationMain Display Screen Events Log Menu Rectifier Bypass Inverter Chg/Boost Battery LoadStatus Measures MenuBattery Test Battery MenuBattery Status Battery Measures Battery parametersLife Menu Life menuRectifier Functional Block Settings MenuAnimated One Line Mimic About MenuLoad on Bypass Load on bypass, UPS availableInput Power Failure-Load on DC Source Off DC SourceRemote Emergency Power Off Manual Operations-All SystemsStartup-Single Module System Startup-1+N System Load Transfer and Retransfer-Single Module System Transfer ProcedureRetransfer Procedure 6 1+N System Transfer load from UPS to Bypass 9 1+N System Shutdown 7 1+N System Transfer load from Bypass to UPSShut Down-Single Module UPS System Load Transfer-1+N System Remove a UPS from System Collective Load Transfer-1+N System Add a UPS to the System CollectiveCurrent-versus-time curves of overload capacity Automatic OperationsOverloads Without Transfer Automatic Transfers to Bypass, UPS System Faults Automatic Transfers to Bypass Overload ConditionAutomatic Retransfers to UPS Remote Alarm Unit MopUPS Shutdown and Monitoring SoftwareConnectivity combinations Manage UPS AdapterConnectivity Available Selectable Input Contacts Available Selectable Output ContactsSafety Precautions Professional Startup Liebert ServicesMaintenance Agreements The Signature Program TrainingAir Filters Routine MaintenanceRecord Log Limited Life Components Battery MaintenanceUPS component service life Component Expected Life ReplaceBattery Safety Precautions Battery Voltage, VDC Matching Battery Cabinets-OptionalBattery voltage, nominal and float Number of Cells Nominal Float 240 480 527Other DC Sources Battery retorque valuesBattery Mfr Battery Model # In-lb N-m Retorque ValueDetecting Trouble Reporting a ProblemUpstream Feeder Circuit Breaker Setting Inspections Items to check includeDC Sources Battery OperationEnvironmental specifications Other DC SourcesElectrical specifications Physical specificationsSpecifications LiebertNX Page Twor k Ne tIs t Care