Dell J728N, K803N, H950N, H967N manual Troubleshooting

Page 69

Table 16. Typical Alarms and Conditions (continued)

Alarm or Condition

Possible Cause

Action

Shutdown Imminent

(Alarm 55)

Continuous Alarm

Communication to external devices stops because the UPS has entered a state where it may abruptly stop operating without further notice unless utility returns.

The alarm is issued when the battery time remaining reaches zero. All connected devices should have already shut down gracefully.

Battery Test Failed

A weak battery string was

This is a warning notice. Dell recommends

(Alarm 191)

detected during the last battery

that you replace the batteries soon.

 

test.

 

 

Intermittent Alarm

 

 

 

 

 

 

 

 

 

Service Battery

A faulted battery string has

Contact your service representative.

 

(Alarm 149)

been detected and as a result,

 

 

the charger is disabled.

 

 

Continuous Alarm

 

 

 

 

 

 

 

 

Utility Not Present

Utility level has fallen below the

Transfer to battery if supporting load. Power

(Alarm 59)

Utility Not Present threshold

down if not supporting load.

 

(typically <25 to 50V).

 

 

Intermittent Alarm

 

 

 

 

 

 

 

 

Bypass Not Available

Utility is outside of the bypass

Check the bypass settings. See “Settings” on

(Alarm 105)

limits defined in the UPS.

page 41.

 

 

 

 

 

 

 

 

Input AC Over Voltage

Utility voltage exceeds the

The UPS transfers to Battery mode if

 

(Alarm 6)

maximum operating range.

supporting load.

 

 

 

 

Intermittent Alarm

 

 

 

 

 

 

 

Input AC Under Voltage

Utility voltage is below the

The UPS transfers to Battery mode if

 

(Alarm 7)

minimum operating range.

supporting load.

 

 

 

 

Intermittent Alarm

 

 

 

 

 

 

 

Input Under/Over Frequency

The utility frequency is out of

The UPS transfers to Battery mode if

 

(Alarm 8)

usable frequency range.

supporting load.

 

 

 

 

Intermittent Alarm

 

 

 

 

 

 

Site Wiring Problem

An alarm triggers when the

Have a qualified electrician correct the wiring

(Alarm 194)

difference between ground and

problem. If the UPS is not wired with a neutral

neutral voltage is >15V.

wire, Site Fault should be disabled in the

Continuous Alarm

 

Settings menu (see page 41).

 

 

 

 

 

 

 

Remote Emergency Power

The external contacts in the

The UPS de-energizes the load and enters

Off

rear of the UPS are configured

Standby mode. See “Installing Remote

 

(Alarm 12)

for REPO operation and they

Emergency Power-off” on page 27 for more

have been activated.

information.

 

Continuous Alarm

 

 

 

 

 

 

 

 

 

 

Troubleshooting

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Contents Users Guide September 2009 S 164201788 Table of Contents Dell UPS Management Software RS-232 and USB Communication PortsUPS Status Menu Event Log Menu Testing BatteriesDell Online Rack UPS IntroductionIntroduction What are You Looking For? Find It Here Finding InformationUPS Output Power Safety WarningsSafety Warnings Do not add weight to slide/rail mounted equipment Inspecting the Equipment InstallationUnpacking the Cabinet Unpacking the CabinetLifting the Cabinet 120V Rear Panel Identifying the UPS Rear Panels230V Rear Panel Identifying the UPS Front PanelOpening the Metal Battery Cover Rackmount SetupIf installing additional UPSs, repeat for each cabinet Positioning the Rails Attaching the Rails to the Rack Installing and Securing the Cabinet Installing the Battery Tray Install the UPS front cover see Figure Removing the Battery Connector Cover Installing the EBMInstalling the Strain Relief Bracket EBM Installation Installing the UPSRepo Connections Wire Function Installing Remote Emergency Power-offRepo Connector Minimum Upstream Circuit Breaker Rating UPS Output Power Power Cord RatingsUPS Initial Startup Installation Operation UPS Startup and ShutdownStarting the UPS UPS Shutdown Starting the UPS on BatteryControl Button Functions Control Button Sequence Control Panel FunctionsChanging the Language Display FunctionsStartup Screen UPS Status Screen LockedBypass Mode Battery ModeBad Battery Detected or Battery Disconnected UPS General Alarms ActiveNormal Mode Status Summary Screens Description Battery Test StatusHigh Efficiency Mode Converter ModeEvent Log Battery Status Screens DescriptionMeasurements Control Screens Description Control ScreensSettings Settings Description Available Settings Default SettingIdentification Settings Description Available Settings Default Setting Settings Description Available Settings Default Setting Settings Description Available Settings Default Setting Settings Description Available Settings Default Setting Transferring the UPS Between Modes Transferring from Normal to Bypass ModeTransferring from Bypass to Normal Mode Setting Power StrategyBehavior on Overload Retrieving the Event LogControlling Load Segments Through the Display Configuring Load SegmentsConfiguring Automatic Start Delay Configuring Automatic on Battery Shutdown Configuring the UPS for an EBM Configuring Battery SettingsConfiguring Automatic Restart Running Automatic Battery TestsConfiguring Automatic Battery Tests RS-232 and USB Communication Ports Additional UPS FeaturesGND RS-232 Communication Port Pin AssignmentDell Network Management Card Dell Network Management Card OptionalDell UPS Management Software UPS Maintenance UPS and Battery CareTransporting the UPS Remove the UPS front cover see Figure Disconnect the internal battery connectors see Figure Storing the UPS and Batteries When to Replace BatteriesUpdating the UPS Firmware Testing BatteriesSpecifications Rated at nominal inputs Regulation Normal mode Power LevelsRegulation Battery mode Environmental and SafetyBattery Runtimes Battery ConfigurationVoltage FusesTroubleshooting Accessing Alarms and ConditionsUPS Status Menu Event Log Menu Typical Alarms and ConditionsAction Troubleshooting Troubleshooting Silencing the Alarm

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