Emerson 250-400kVA manual Resolve the issue that precipitated the EPO

Page 56

 

 

 

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.

 

 

 

Resolve the issue that precipitated the EPO.

 

 

 

For safety, the UPS latches an EPO event. There

 

 

 

are two ways to clear the latch:

 

 

 

1. Press the EPO Reset pushbutton on the External

 

 

 

Interface Board (EIB).

 

 

The UPS shuts down in response to an active

2. From HMI front panel display, press OK button

EPO Shutdown

when ” Press OK to Reset EPO Latched signal”

Emergency Power Off (EPO) command.

 

 

message is displayed

 

 

 

 

 

 

in a dialog box.

 

 

 

Verify the EPO is cleared by observing the EPO

 

 

 

alarm in the Active Event Window is gone.

 

 

 

Restart the UPS by pressing “Startup,” “Manual

 

 

 

Start,” and follow the prompts.

 

 

 

 

 

 

 

Investigate possible causes for a rising temperature

 

 

 

condition, such as loss of air conditioning, airflow

 

 

 

obstructions, etc. If the ambient temperature is high

 

 

 

due to loss of air conditioning and cannot be

 

 

This summary event indicates the UPS is nearing

addressed immediately, perform the following:

 

 

1. Press “Transfer,” “Bypass” to transfer the UPS

 

 

an over temperature condition. Depending on

to bypass.

 

 

which sensor is reporting the high temperature,

 

 

2. Press “SILENCE” to silence the audible alarm.

Equip Ovtemp

the UPS may do one of three things once the limit

3. Wait at least 15 minutes, then attempt to reset

 

 

is reached: shut down, transfer to bypass, or

the alarm by pressing “RESET.”

 

 

transfer to battery operation. This is a potentially

 

 

4. If the alarm clears and proper cooling has been

 

 

serious event.

 

 

restored to the UPS, press “Transfer,” “UPS” to

 

 

 

 

 

 

transfer back to UPS.

 

 

 

If this alarm is present and no external factors are

 

 

 

affecting proper cooling of the UPS, contact your

 

 

 

factory-authorized service provider.

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Contents Liebert NXL Battery Cabinet Precautions Contacting Liebert for SupportTable of Contents Specifications Figures Page Important Safety Instructions Modes of Operation Normal ModeGeneral Description Bypass Mode Battery ModeMaintenance Bypass OptionsIntroduction Features Main component locationsMimic display Monitor/mimic display example Normal power flow Monitor/mimic display example Utility failMonitor/mimic display example Load on bypass, UPS On Touchscreen Navigation Main Display Screen Menu treeConfigurations Menu Rating Rating ParametersUser Settings System Settings parametersAdjustable Setpoints Adjustable setpoints parametersCell Count Adjustment Startup Menu Event ManagementStatus Reports Menu Shutdown Menu Shutdown menuTransfer/retransfer commands Transfer MenuBattery Management Menu Time remaining displayDisplay summary see Figure Reset MeteringHelp SilenceOK to Transfer Load on bypass, UPS availableInput Power Failure-Load on Battery Input power fail, load on batteryOff Battery Emergency Module OffManual Procedures Remote Emergency Power OffStartup Procedure Startup commands Load Transfer Procedures Transfer ProcedureRe-Transfer Procedure Maintenance Bypass Load TransfersMaintenance Bypass Load Transfers-If Load is on UPS Bypass Shutdown Procedures UPS Shutdown ProcedureSystem Shutdown Procedure Automatic OperationsAutomatic Transfers to Bypass Overload Condition Current-versus-time curves of overload capacityAutomatic Transfers to Bypass, UPS System Faults Automatic Retransfers to UPSSafety Precautions Liebert Services Routine MaintenanceRecord Log Air FiltersBattery Maintenance UPS component service lifeLimited Life Components Component Expected Life ReplaceBattery Safety Precautions Battery retorque values Matching Battery Cabinets-OptionalBattery voltage, nominal and float Torque specifications, unless otherwise labeled Detecting TroubleRack-Mounted Batteries Torque RequirementsCorrective Actions Reporting a ProblemUpstream Feeder Circuit Breaker Setting Inspections Battery Operation Environmental specificationsParameter Specification Environmental ConditionsElectrical specifications Battery & DC ParametersLiebert NXL Model Size 250 Input ParametersPhysical Parameters & Standards, in mm Liebert NXL Model SizeSystem Parameter Specifications Liebert NXL alarm and status messages Event Message Event Definition Recommended ActionObserve 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 Ne t ItiTi n That
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