Emerson AC4 user manual Wiring Specifications, Wiring and Connections, Wiring specifications

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Wiring and Connections

3.0WIRING AND CONNECTIONS

! WARNING

Risk of electric shock. Can cause property damage, injury and death.

Switch Off electric power to the Liebert AC4 before installing any wiring to the unit or changing input or output connections. The Power On/Off switch is in the top left corner of the unit.

3.1Wiring Specifications

Input and output connections to the Liebert AC4 may be made in any order—it is not necessary, for example, to make all input connections before making any output connections. Use copper conductors only for all wiring.

Table 4

Wiring specifications

 

 

 

 

 

 

 

 

 

 

Connection

Supported Wire Type

Maximum Wire Length

Rating

 

 

 

 

 

 

 

Digital

 

18-22 AWG Stranded & Unshielded

 

 

 

 

 

18 AWG* (recommended)

 

750 ft. (225m)

 

Dry Contact

Input

 

Non Plenum - Belden 9740

 

 

(24VDC, 10 mA)

 

 

 

 

 

 

Plenum - Belden 89740

 

 

 

 

 

 

 

 

 

 

 

 

 

18-22 AWG Stranded & Unshielded

18 AWG*

20 AWG

22 AWG

 

Digital

 

(recommended)

 

 

18 AWG* (recommended)

 

 

 

24VAC @3A

 

@3A 50 ft. (15m)

@3A 40 ft. (12m)

@3A 25 ft. (7m)

Output

 

Non Plenum - Belden 9740

 

 

Plenum - Belden 89740

@2A 100 ft. (30m)

@2A 60 ft. (18m)

@2A 35 ft. (10m)

 

 

 

 

@1A 200 ft. (60m)

@1A 100 ft. (30m)

@1A 75 ft. (23m)

 

 

 

18-22 AWG Stranded & Unshielded

18 AWG*

20 AWG

22 AWG

 

Common

(recommended)

 

 

 

 

Alarm

 

18 AWG* (recommended)

 

 

 

24VAC @3A

 

@3A 50 ft. (15m)

@3A 40 ft. (12m)

@3A 25 ft. (7m)

 

Non Plenum - Belden 9740

Output

 

 

 

Plenum - Belden 89740

@2A 100 ft. (30m)

@2A 60 ft. (18m)

@2A 35 ft. (10m)

 

 

 

 

 

 

 

@1A 200 ft. (60m)

@1A 100 ft. (30m)

@1A 75 ft. (23m)

 

Communication

Null Modem Cable

 

50 ft. (15m)

 

N/A

RS232

 

 

 

 

 

 

24VAC Power

18-22 AWG Stranded & Shielded

 

 

 

 

18 AWG* (recommended)

 

 

 

 

Connection

 

150 ft. (45m)

 

24VAC @1.3A

Non Plenum - Belden 8770

 

 

(TB7)

 

 

 

 

 

 

Plenum - Belden 88770

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

* Recommended

 

 

 

 

 

Liebert® AC4

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Contents Liebert AC4 Page Table of Contents Setup System Setup Common Alarm 7.5 Setup System Setup Zones Appendix a Service Terminal Interface Setup MenuFigures Data Logs Methods of Viewing and Configuring the Liebert AC4Available Alarms IntroductionLCD for configuration Outside Enclosure OverviewOperation Typical Configuration Device Liebert ChallengerDevice RS232 LiebertLiebert HimodHimod Controller Board Overview Controller board componentsLCD connector ConnectorDIP switch 24VAC powerLED Indicators LED indicators summaryOutput LEDs Status LEDs Input LEDs Typical Sequence Packing Contents Installation ConsiderationsInstallation Unpacking and Preliminary InspectionSurface-Mounting the Liebert AC4 Required toolsMounting the Panel Flush-Mounting the Liebert AC4 Connect Power to the Liebert AC4 Electrical connections to panelWiring Specifications Wiring and ConnectionsWiring specifications Connecting Digital Inputs Connecting Digital Inputs and OutputsConnecting Liebert Precision Cooling Units Numbering keysConnecting Digital Outputs Setting the Digital Output JumpersDigital output jumper settings Common alarm outputs Connecting Common Alarm OutputsRS232 Connector Serial interface connector RS232/EIA5Overview of Menus Guide to Liebert AC4 functionsOpening Screen Overview Main Menu OverviewLCD Menu Overview View Status Options Clearing Active Alarms View Active AlarmsActive Alarms Active AlarmsAlarm log conditions View Alarm LogAlarm Log Alarm LogEvent log conditions View Event LogEvent Log Event LogViewing Additional Input Data View Input StatusInput Status Digital input statesViewing Additional Output Data View Output StatusOutput Status Digital output statesSilence Alarm & Backup LOG Files Service Terminal Interface Silence Alarm Service Terminal Interface onlyBack Up Log Files Service Terminal Interface only Silence Alarm & Backup Log Files Service Terminal Interface System and Control Options LoginLogin Valid characters for data entrySetup System menu Login ScreenSystem & Control menu Clear Alarms&Logs selected Clear Alarms/Logs menuSetup System Overview Setup System Setup InputsDefine Input as Alarmable or Event Change Label Name of InputDefine Input as Normally Open or Normally Closed Delay Time Set Up Alarmable Inputs in Latched or Unlatched ModeSet Up Delay Time Latched / UnlatchedSetup System Setup Common Alarm Change to Reset Y or Not Reset NReset Common Alarm Message if too few devices entered Setup System Setup ZonesSet Up a Zone Message if too many devices enteredSetup System Setup Outputs Define Output as Normally Open or Normally ClosedConfigure Output for Loss of Power Fail-Safe Define Operating or Standby ModeEnable or Disable an Output Device in Alarm Status Set ModeChange the Password Setup System Setup System InfoChange Password Reset Password to the Factory Default AaaaSet Date & Time/Automatic Daylight Saving Time Setup Site IDSetup Site ID 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 Setup Operation Menu Setup OperationSelect Setup Operation Default settings operation featuresSet Interval & Start Time 1- to 99-Day Interval Turn Automatic Sequencing On or OffActivate / Deactivate Set Start Time Hour IntervalSpecify Failed Standby Response Turn Standby Testing On or OffChange Standby Testing Failed Standby responseRestart Delay Time Specify Hold Delay TimeHold Delay Time Setup Operation MenuOverride Output Clear the Alarm Log Clear Alarms & LogsClear Active Alarms Clear the Event LogLiebert AC4 Specifications SpecificationsSpecifications Liebert AC4 Appendix a Service Terminal Interface Comparison of Functions LCD and Service Terminal InterfaceConnecting to the Service Terminal Interface COM1 Port Setup Create a ConnectionSpecify COM Port Connection Settings tab Properties SetupAscii Setup Ascii Setup buttonConnect to the Service Terminal Interface Click on the file name for example, AC4.htView Status Overview Silence Alarm and Backup Log FilesSetup Menu Overview Main Menu For sample screens, seeView Status Menus View Active AlarmsView Active Alarms Main MenuView Alarm Log View Alarm LogView Event Log View Event LogView Input Status View Input StatusView Output Status View Output StatusSilence Alarm Section A.5.1 Section A.5.2Backup Log Files Event Log File Back Up Alarm Log FileBackup Log Files Alarm Log File Back Up Event Log FileSetup Menu Login MenuLogin Tips on Using the Service Terminal Interface Setup MenuSetup Menu See DescriptionSetup Inputs Setup InputsSetup Common Alarm Setup Common AlarmSetup Zones Setup ZonesSetup Outputs Setup OutputsSetup System Info Setup System InfoChange Password Setup Site ID Set Date & TimeBackup & Upload Configuration File Backup Backup & Upload Configuration File Upload Factory DefaultsFirmware Update Service Terminal Interface only Firmware UpdateSetup Operation Setup Operation Auto SequencingAuto Sequencing Standby Testing Setup Operation Standby TestingSetup Operation Hold Delay Hold DelaySetup Operation Failed Standby Failed StandbyOverride Output Restart DelaySetup Operation Restart Delay Override OutputClear Alarms & Logs Clear Alarms & Logs Clear Active AlarmsClear Alarms & Logs Clear the Alarm Log Clear Alarms & Logs Clear the Event Log Specifications Liebert AC4 Specifications Specifications Liebert AC4 Page Twor k Ne tIs t Care