Liebert 30-130kVA manual Faults, Alarms, Status

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Operation

3.4Faults, Alarms, Status

This section defines the active fault, alarm, and status indicators, their causes, and the associated system operations performed upon their detection.

3.4.1Faults

A fault is defined as an undesirable system operating condition that could cause further damage to the system or potentially drop the load. Once detected, faults may trigger an appropriate emergency action such as transferring the load to an alternative power source. Many fault conditions can only be resolved through Operator intervention or service by an LGS technician.

A fault condition must be valid for a certain amount of time before it is recognized as an active fault. This prevents spurious signals from causing false fault detection and unnecessary state changes.

All fault occurrences are time-stamped and recorded in the Event Log for later analysis, and sent to the Operator display.

Fault Messages

Fault messages are displayed in reverse video, as compared with alarm messages which are displayed in regular video.

The following faults are detected by Rectifier DSP.

•Battery Overcharge

•Battery Fuse Fail

•Battery Low Transfer

•DC Overvoltage Transient

•Input Phase Rotation Error

•Rectifier Fuse Fail

•Rectifier Drive 1 Fail

•Rectifier Drive 2 Fail

•Trap Fuse Fail

•Delta/WYE Current Imbalance

The following faults are detected by Inverter DSP:

•Bypass Frequency Error

•Bypass Overload Shutdown

•Bypass Phase Rotation Error

•IDC Peak

•IGBT Drive Fail

•Inverter Overload Transfer

•Inverter Fuse Fail

•Output Overvoltage Transfer

•Output Undervoltage Transfer

•SBS SCR Open

•SBS SCR Shorted

•Inverter current Limit Transfer

•Inverter DC Offset

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Contents Npower UPS Page Table of Contents Communication Interfaces MaintenanceFigures Page Tables Page Important Safety Instructions Overview of Manual System Description Versatility Safety PrecautionsFactory Backup and Service Assistance ReliabilityRecharge Input Power FailureModes Of Operation Normal Load On UPSCHG Mimic DisplaySYS. Status Options Operator ControlsGeneral Component Description Battery SystemUPS Module Controls Hardware Detailed Component DescriptionsFirmware Operation Input Power FactorBattery Charging Circuit Rectifier/ChargerOperation After End-of-discharge Battery DisconnectBattery Charge Current Limiting Battery Equalize Charge CircuitStatic Switch Backfeed Protection Nonlinear Load CharacteristicsUnbalanced Load Characteristics Static Bypass SwitchTransfer and Retransfer Conditions Operation Operation Navigation Buttons Operator Control PanelRotary switch Rotary SwitchPrev Cancel Save & Exit ConfigurationUser Settings Security Access and PasswordsMenu Tree Display Screens and ProceduresSecondary Screens Primary ScreensMimic Display Screen Main Menu ScreenDischg FaultsFaults / Alarms RectSYS. Status Mimic DisplayTemps DEG C Inlet AIR Outlet AIR Heat Sinks DC BUS / Battery StatusInput Status FreqBypass Input Status Freq .9 HZ 213 214 Phase DiffOutput Load Status EXI T Active Faults and AlarmsFaults and Alarms User ShutdownNext System RatingsSecond Scenario Manual StartupAuto Startup Skip Abort Input Modify Current Limit Target and Ramp ValuesModify DC BUS SET Point Target and Ramp Values ServExternal maintenance bypass switch, dual-input UPS SIB External Maintenance BypassExternal maintenance bypass switch, single-input UPS External Maintenance Bypass Switch Configurations Multiple Battery CabinetsShutdown User ShutdownStatus Reports Status ReportsSystem Status History LOG Clear History Logs Clear Event LOGTotal Event LOGEvent Log Output History LOG02 / 10 OUT-V IN-V Load FreqInput of / UF SBS Line Trap SBS LoadExit Configuration ScreensPrev DC BUS VoltsInput Frequency Output FrequencyCurrent Date System SettingsCancel Save & Exit System SettingsTime Next PREV. Cancel Save & ExitCurrent Time Order NumberOutput Transformer Bypass WIND. no Enter PasswordSingle / Dual Input DualOptions 10% Passive Filter SettingsOptions Active Filter LBS Generator Auto RestartPrev Exit Pulse Rectifier Battery GND Fault Green MachineAlternate Power Pole FAN no Line Drop CompensationAuto Dial Communication OptionsNext Exit Auto Dial YES Auto Dial OUT Pager Pager Support ConfigurationPager Enabled Pager Number Pager PIN Modem Health CheckPREV. Cancel Next PREV. Cancel Factory Settings 10 % Passive Filter SettingsNext Cancel Freeze Alarm MaskLatching DialSave & Exit Cancel Alarm / Fault NameAlarm / Fault Name Battery Fuse Fail Alarm / Fault Name F EAuto Dial Customer Alarm InterfaceProgrammable Output Relay Board # Customer Alarm InterfaceRemote LED Board # STD SET User Defined Relay AssignmentsSTD SET UP Down ADD Remove Clear Exit Prog Relay #Manual Transfer Navigating ProtocolBattery Test Battery ManagementAuto Test MIN MAX Weeks Battery CycleBattery Duration Battery EqualizerStop Start Enabled DisabledAuto ManualEqualize Time Period Battery Temp Compensation ChargeTemperature Battery Temperature Compensation ChargeBattery Cycle Monitor Battery Temp CompensationSummary Clear BCM Battery Cycle MonitorClear Summary YES / no Summary Seconds Discharge CyclesTime Down BATT. EOD Lower SET Point BATT. EOD Upper SET Point Battery Time Low WarningBATT. Time LOW Warning Battery SupplementAuto Restart Auto Restart Trigger Condition Alarm NotificationsSystem Status Monitoring System StatusSign OFF Date 10/30/02 System StatusSign OFF Date 10/30/01 Next Prev Save & ExitAccumulated # of Brown Outs Accumulated Backup HoursAccumulated Operating Hours on UPS Accumulated Operating Hours on BypassFaults Faults, Alarms, StatusDescription L Latching...D Dial Alarm / Fault Name F E DelayOn Battery Input Contact #1 UP DownSummary Alarms, functions, and corrective actions Alarm MessagesContact Liebert Global Service to check Excess load from the UPS and attempt to EPO Maximum heat sink temperature limit This is a summary event based on Battery is discharging. This occurs RMS input current has reached Output kVA or kW or RMS current has With the load on UPS, PhaseB output KVA Condition only causes an alarm, but should Push-button switch located on See 3.3.7 Battery Management All of the alarms before attempting to Status Communication InterfacesWorldwide Reporting 1 RS-232 Port Local Reporting TerminalAuto-Dial Dial Out Pager Requesting InformationSiteScan Remote Alarm Status PanelLoad on Bypass Setting Up External Communication DevicesOK to Transfer Momentary Overloads Input Power Failure Load on BatteryAutomatic Re-transfers to UPS Automatic OperationsOverloads Automatic Transfers to BypassAutomatic Module Off Line Maintenance Air Filters Routine MaintenanceBattery Maintenance Record LogBattery Safety Precautions Torque Requirements Battery voltage recordRecommended Test Equipment Reporting a ProblemDetecting Trouble Corrective ActionsMaintenance 101 Maintenance 102 Page Ne t