Liebert Guide to Alarm Reset and Clearing Logs for Optimal AC4 Controller Management
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System and Control Options

7.10Clear Alarms & Logs

The Clear Alarms & Logs menu allows you to clear active alarms or delete all records from either of the AC4’s alarm and event logs.

To clear alarms or logs:

Log In and Choose Clear Alarms & Logs

• From the Main Menu, use the arrows ↑↓ to choose System and Control, then press Enter ↵ (see 7.1 - Login for help).

• Enter your password at the Login screen.

• From the System and Control Menu, use the arrows ↑↓ to choose Clear Alarms & Logs, then press Enter ↵ .

•Use the following steps to clear alarms or delete log records.

7.10.1Clear Active Alarms

To clear all active alarms:

• From the Clear Alarms/Logs Menu, use the arrows ↑↓ to choose Clear Active Alarms, then press Enter ↵ .

•Use the arrows ↑↓ to choose Y (Yes - clear all active alarms) or N (No - do not clear alarms), then press Enter ↵ .

NOTE

Clear active alarms is the only means to reset Latched alarms. This action must be taken to return Latched points to their

normal state. To set up a digital input as latched, see 7.3.4 - Set Up Alarmable Inputs in Latched or Unlatched Mode.

7.10.2Clear the Alarm Log

The alarm log contains up to 99 records of alarms that have occurred. You may want to clear the log after backing up the file or simply to free up space.

NOTE

Before deleting the records in the alarm log, you may want to back up the file to a computer, as described in 6.2 - Back Up Log Files (Service Terminal Interface only).

To delete all records from the alarm log:

• From the Clear Alarms/Logs Menu, use the arrows ↑↓ to choose Clear Alarm Log, then press Enter ↵ .

•Use the arrows ↑↓ to choose Y (Yes - clear the alarm log) or N (No - do not clear the alarm log), then press Enter ↵ .

7.10.3Clear the Event Log

The event log contains up to 99 records of events detected by the AC4. You may want to clear the log after backing up the file or simply to free up space.

NOTE

Before deleting the records in the event log, you may want to back up the file to a computer, as described in 6.2 - Back Up

Log Files (Service Terminal Interface only).

To delete all records from the event log:

Main Menu

VIEW STATUS

> SYSTEM AND CONTROL

↑↓ =NEXT

↵ =SELECT

Login

LOGIN

AAAA

↑↓ =SELECT ↵ =NEXT/END

System & Control Menu

SETUP SYSTEM

OVERRIDE OUTPUT

>CLEAR ALARMS & LOGS

↑↓ =NEXT ↵ =SELECT

Clear Alarms/Logs Menu

>CLEAR ACTIVE ALARMS CLEAR ALARM LOG

CLEAR EVENT LOG

↑↓ =NEXT ↵ =SELECT

Clear Active Alarms

CLEAR ACTIVE ALARMS ARE YOU SURE? N

↑↓ =Y/N

↵ =END

Clear Alarms/Logs Menu

CLEAR ACTIVE ALARMS

>CLEAR ALARM LOG

CLEAR EVENT LOG

↑↓ =NEXT ↵ =SELECT

Clear Alarm Log

CLEAR ALARM LOG

ARE YOU SURE? N

↑↓ =Y/N

↵ =END

Clear Alarms/Logs Menu

CLEAR ACTIVE ALARMS CLEAR ALARM LOG

>CLEAR EVENT LOG

↑↓ =NEXT ↵ =SELECT

Clear Event Log

CLEAR EVENT LOG

ARE YOU SURE? N

↑↓ =Y/N

↵ =END

• From the Clear Alarms/Logs Menu, use the arrows ↑↓ to choose Clear Event Log, then press Enter ↵ .

•Use the arrows ↑↓ to choose Y (Yes - clear the event log) or N (No - do not clear the event log), then press Enter ↵ .

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Contents Monitoring AC4Page Table of Contents Setup System Setup Common Alarm 7.5 Setup System Setup Zones Setup Menu Appendix a Service Terminal InterfaceFigures Available Alarms Methods of Viewing and Configuring the AC4Data Logs IntroductionOperation LCD for configurationOutside Enclosure Overview Device RS232 Liebert Himod Typical ConfigurationDevice Liebert Challenger Controller board components Controller Board OverviewDIP switch Connector RS232LCD connector 24VAC powerOutput LEDs Status LEDs Input LEDs LED IndicatorsLED indicators summary Typical Sequence Installation Installation ConsiderationsPacking Contents Unpacking and Preliminary InspectionMounting the Panel Surface-Mounting the AC4Required tools Flush-Mounting the AC4 Electrical connections to panel Connect Power to the AC4Wiring specifications Wiring SpecificationsWiring and Connections Connecting Liebert Environmental Units Connecting Digital Inputs and OutputsConnecting Digital Inputs Connecting Digital OutputsRS232 Connector Connecting Common Alarm OutputsSetting the Digital Output Jumpers Digital output jumper settingsGuide to AC4 functions Overview of MenusLCD Menu Overview Opening Screen OverviewMain Menu Overview View Status Options Active Alarms View Active AlarmsClearing Active Alarms Active AlarmsAlarm Log View Alarm LogAlarm log conditions Alarm LogEvent Log View Event LogEvent log conditions Event LogInput Status View Input StatusViewing Additional Input Data Digital input statesOutput Status View Output StatusViewing Additional Output Data Digital output statesSilence Alarm Service Terminal Interface only Silence Alarm & Backup LOG Files Service Terminal InterfaceBack Up Log Files Service Terminal Interface only Silence Alarm & Backup Log Files Service Terminal Interface Login LoginSystem and Control Options Valid characters for data entrySystem & Control menu Clear Alarms&Logs selected Login ScreenSetup System menu Clear Alarms/Logs menuSetup System Setup Inputs Setup System OverviewDefine Input as Normally Open or Normally Closed Define Input as Alarmable or EventChange Label Name of Input Set Up Delay Time Set Up Alarmable Inputs in Latched or Unlatched ModeDelay Time Latched / UnlatchedReset Common Alarm Setup System Setup Common AlarmChange to Reset Y or Not Reset N Set Up a Zone Setup System Setup ZonesMessage if too few devices entered Message if too many devices enteredDefine Output as Normally Open or Normally Closed Setup System Setup OutputsEnable or Disable an Output Device in Alarm Status Define Operating or Standby ModeConfigure Output for Loss of Power Fail-Safe Set ModeChange Password Setup System Setup System InfoChange the Password Reset Password to the Factory Default AaaaSetup Site ID Setup Site IDSet Date & Time/Automatic Daylight Saving Time Set Date & TimeBackup and Upload Configuration File Back Up the Configuration File Upload the Configuration File Firmware Update Service Terminal Interface only Factory DefaultsFactory Defaults System and Control Options Select Setup Operation Setup System Menu Setup OperationSetup Operation Menu Default settings operation featuresActivate / Deactivate Turn Automatic Sequencing On or OffSet Interval & Start Time 1- to 99-Day Interval Set Start Time Hour IntervalChange Standby Testing Turn Standby Testing On or OffSpecify Failed Standby Response Failed Standby responseHold Delay Time Specify Hold Delay TimeSetup Operation Menu Restart Delay TimeOverride Output Clear Active Alarms Clear Alarms & LogsClear the Alarm Log Clear the Event LogSpecifications AC4 SpecificationsComparison of Functions LCD and Service Terminal Interface Appendix a Service Terminal InterfaceConnecting to the Service Terminal Interface Specify COM Port Connection COM1 Port SetupCreate a Connection Ascii Setup Properties SetupSettings tab Ascii Setup buttonClick on the file name for example, AC4.ht Connect to the Service Terminal InterfaceSetup Menu Overview Silence Alarm and Backup Log FilesView Status Overview Main Menu For sample screens, seeMain Menu View Status MenusMain Menu View Active Alarms View Active AlarmsView Alarm Log View Alarm LogView Event Log View Event LogView Input Status View Input StatusView Output Status View Output StatusSection A.5.1 Section A.5.2 Silence AlarmBackup Log Files Alarm Log File Back Up Alarm Log FileBackup Log Files Event Log File Back Up Event Log FileLogin Setup MenuLogin Menu Setup Menu Setup MenuTips on Using the Service Terminal Interface See DescriptionSetup Inputs Setup InputsSetup Common Alarm Setup Common AlarmSetup Zones Setup ZonesSetup Outputs Setup OutputsChange Password Setup System InfoSetup System Info Set Date & Time Setup Site IDBackup & Upload Configuration File Backup Factory Defaults Backup & Upload Configuration File UploadFirmware Update Firmware Update Service Terminal Interface onlyAuto Sequencing Setup OperationSetup Operation Auto Sequencing Setup Operation Standby Testing Standby TestingSetup Operation Failed Standby Hold DelaySetup Operation Hold Delay Failed StandbySetup Operation Restart Delay Restart DelayOverride Output Override OutputClear Alarms & Logs Clear the Alarm Log Clear Alarms & LogsClear Alarms & Logs Clear Active Alarms Clear Alarms & Logs Clear the Event Log Page Company Behind the Products Technical Support/ServiceLocations Asia 23F, Allied Kajima Bldg
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AC4 specifications

The Liebert AC4 is a highly advanced cooling solution designed for critical environments, such as data centers and telecommunications facilities. As data demands rise and IT equipment generates significant heat, an effective cooling system is paramount to maintaining optimal performance and reliability. The Liebert AC4 stands out in this space, offering a blend of efficiency, flexibility, and innovative technology.

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