Emerson 250-400kVA manual Liebert NXL alarm and status messages

Page 49

UPS Alarm and Status Messages

APPENDIX A - UPS ALARM AND STATUS MESSAGES

Table 7 shows alarm and status messages as they appear in Liebert NXL’s touchscreen and in the history log, along with a description and recommended actions, if any.

If the recommended action fails to correct the condition, contact your factory-authorized service pro- vider.

The “Service Telephone Number” can be found by pressing “CONFIG,” “Ratings,” “More>>” on the menu bar.

Table 7

Liebert NXL alarm and status messages

 

 

 

 

Event Message

Event Definition

Recommended Action

 

 

 

 

 

 

An Automatic Restart was enabled but has failed

 

 

 

to complete.

 

 

 

With Automatic Restart enabled, the unit

Press “SILENCE” to silence the audible alarm.

 

 

automatically restarts after an End of Discharge

 

 

(EOD) event. This alarm means that one of the

Check the active events to determine the status of

 

 

auto restart requirements was true, but failed

the UPS.

 

 

before the restart sequence completed.

If “Auto Restart Fail” is the only alarm present,

Auto Restart Fail

For example, one conditional requirement for

attempt a manual start of the unit by pressing

Automatic Restart to occur is that the Rectifier

“Startup,” “Manual Start,” then following the prompts

 

 

 

 

Input Voltage must be within acceptable limits. If,

to attempt to place the unit back online.

 

 

during the restart sequence, the input voltage

If the manual start fails, or if there are other alarms

 

 

drops out of tolerance, the Automatic Restart will

present that won’t clear, contact your factory-

 

 

fail.

authorized service provider.

 

 

This alarm is self-clearing. When the condition is

 

 

 

no longer present, the alarm and any control

 

 

 

activity tied to the alarm reverts to normal.

 

 

 

 

Press “SILENCE” to silence the audible alarm.

 

 

 

Press “RESET” to attempt to clear active events.

 

 

The condition that caused an automatic transfer

This does not clear the “Auto Retransfer Failed”

 

 

alarm.

 

 

to bypass failed to clear within a specified time

 

 

If all other alarm conditions clear, attempt a manual

 

 

delay.

 

 

transfer back to Inverter by pressing “Transfer,”

Auto Rexfer Failed

An example of a recoverable transfer (one which

“UPS.”

 

 

the controls may attempt to recover from

 

 

If the transfer is successful, press “RESET” to clear

 

 

automatically) is an overload that exceeded the

 

 

this alarm from the Active Event Window. If the UPS

 

 

overload time curve.

 

 

fails to transfer and the active messages do not

 

 

 

 

 

 

explain the reason, contact your factory-authorized

 

 

 

service provider.

 

 

Battery Circuit Breaker “#” is open.

Press “SILENCE” to silence the audible alarm.

 

 

This status message is self-clearing. When the

 

 

Check the status of Battery Circuit Breaker “#”. If it

 

 

condition is no longer present, the message and

Batt CB “#” Open

is open, the alarm is normal.

any control activity tied to the status event reverts

 

 

If Battery Circuit Breaker “#” is closed, contact your

 

 

to normal. (The Liebert NXL has eight battery

factory-authorized service provider.

 

 

circuit breakers.)

 

 

 

43

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Contents Liebert NXL Contacting Liebert for Support Battery Cabinet PrecautionsTable of Contents Specifications Figures Page Important Safety Instructions General Description Normal ModeModes 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 Status Reports Menu Event ManagementStartup 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 Battery voltage, nominal and float Matching Battery Cabinets-OptionalBattery retorque values Detecting Trouble Torque specifications, unless otherwise labeledRack-Mounted Batteries Torque RequirementsUpstream Feeder Circuit Breaker Setting Inspections Reporting a ProblemCorrective Actions Environmental specifications Battery OperationParameter Specification Environmental ConditionsBattery & DC Parameters Electrical specificationsLiebert NXL Model Size 250 Input ParametersSystem Parameter Liebert NXL Model SizePhysical 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