Emerson AC4 user manual Typical Sequence

Page 13

Introduction

1.8Typical Sequence

Figure 4 shows a typical sequence of how the Liebert AC4 functions after detecting a change in a monitored device. Many responses depend on configuration settings. This example shows what happens when a digital input changes state—assuming the input is defined as alarmable—and when the condition returns to normal.

Figure 4 Example of typical sequence

RESPONSES TO AN ALARM

ALARM CONDITION DETECTED

A device connected to the Liebert

AC4 changes state.

The horn sounds (audible horn on the controller board—silence horn by pressing any key on the LCD keypad)

The LCD flashes

ESC	(except during setup)

RETURN-TO-NORMAL SEQUENCE

RETURN TO NORMAL

The device that triggered the alarm returns to its normal state.

The alarm is cleared (automatically if Unlatched; must be cleared manually if Latched)

The horn stops sounding

(if user hasn’t silenced it)

The LCD stops flashing

ESC

DEVICE_1 ALARM

CONTACT CLOSED

30-SEP-04 16:23:04

DEVICE_1 ALARM

CONTACT CLOSED

DEVICE_4 STARTED

30-SEP-04 16:23:10

User setup determines output control (for example, the device in alarm might be disabled and a standby device set to operate)

Entry in Alarm Log

Condition (ALARM)

&state (CONTACT CLOSED)

Entry in Active Alarm Log

Condition (ALARM)

&state (CONTACT CLOSED)

Entry in Event Log

Status change

(DEVICE_4 STARTED)

ALARMS CLEARED

30-SEP-04 16:24:04

DEVICE_1 STARTED DEVICE_2 STARTED DEVICE_3 STARTED DEVICE_4 OFF

30-SEP-04 16:24:06

Entry in Alarm Log

(ALARMS CLEARED)

Entry in Event Log Actions in response to event

(DEVICE_1 STARTED, DEVICE_4 OFF)

7	Liebert® AC4™

Image 13

Contents Liebert AC4 Page 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 Liebert AC4Data Logs IntroductionOutside Enclosure Overview LCD for configurationOperation Device Liebert Challenger Typical ConfigurationDevice RS232 LiebertLiebert HimodHimod Controller board components Controller Board OverviewDIP switch ConnectorLCD connector 24VAC powerLED indicators summary LED IndicatorsOutput LEDs Status LEDs Input LEDs Typical Sequence Installation Installation ConsiderationsPacking Contents Unpacking and Preliminary InspectionRequired tools Surface-Mounting the Liebert AC4Mounting the Panel Flush-Mounting the Liebert AC4 Electrical connections to panel Connect Power to the Liebert AC4Wiring and Connections Wiring SpecificationsWiring specifications Connecting Liebert Precision Cooling Units Connecting Digital Inputs and OutputsConnecting Digital Inputs Numbering keysSetting the Digital Output Jumpers Connecting Digital OutputsDigital output jumper settings RS232 Connector Connecting Common Alarm OutputsCommon alarm outputs Serial interface connector RS232/EIA5Guide to Liebert AC4 functions Overview of MenusMain Menu Overview Opening Screen OverviewLCD 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 OverviewChange Label Name of Input Define Input as Alarmable or EventDefine Input as Normally Open or Normally Closed Set Up Delay Time Set Up Alarmable Inputs in Latched or Unlatched ModeDelay Time Latched / UnlatchedChange to Reset Y or Not Reset N Setup System Setup Common AlarmReset Common Alarm 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 Factory Defaults Factory DefaultsFirmware Update Service Terminal Interface only Perform Firmware UPDATE-YESY or NON? N Select Setup Operation 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 TimeRestart Delay Time Setup Operation MenuOverride Output Clear Active Alarms Clear Alarms & LogsClear the Alarm Log Clear the Event LogSpecifications Liebert AC4 SpecificationsSpecifications Liebert AC4 Comparison of Functions LCD and Service Terminal Interface Appendix a Service Terminal InterfaceConnecting to the Service Terminal Interface Create a Connection COM1 Port SetupSpecify COM Port 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, seeView Active Alarms View Active AlarmsView Status Menus Main MenuView Alarm Log View Alarm LogView Input Status View Event LogView Event Log 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 Menu Setup MenuLogin Setup Menu Setup MenuTips on Using the Service Terminal Interface See DescriptionSetup Inputs Setup InputsSetup Zones Setup Common AlarmSetup Common Alarm Setup ZonesSetup Outputs Setup OutputsSetup System Info Setup System InfoChange Password Set Date & Time Setup Site IDBackup & Upload Configuration File Backup Factory Defaults Backup & Upload Configuration File UploadFirmware Update Firmware Update Service Terminal Interface onlySetup Operation Auto Sequencing Setup OperationAuto 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 Active Alarms Clear Alarms & LogsClear Alarms & Logs Clear the Alarm Log Clear Alarms & Logs Clear the Event Log Specifications Liebert AC4 Specifications Specifications Liebert AC4 Page Is t Ne tTwor k Care