Emerson Ultimate Guide to the Liebert AC4 Controller for Home Security Management
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Introduction

1.0INTRODUCTION

The Liebert AC4 is ideal for coordinated control of systems with redundant equipment, such as multiple environmental units or pumps. When the Liebert AC4 controller detects an alarm in an operating device, the Liebert AC4 enables a standby device and controls the device in alarm as configured, either leaving that device operating or disabling it.

The Liebert AC4 controller can also balance usage of devices by rotating units through Operating and Standby modes according to a user-defined schedule. This helps keep redundant equipment operating efficiently and only when needed. The Liebert AC4 can perform routine testing of standby devices and alert personnel if a standby device fails an operating test and requires attention.

Another capability of the Liebert AC4 is monitoring the status of connected devices and keeping personnel apprised through local alarming.

The Liebert AC4 controller can interface with anything that closes an electrical contact. To improve process efficiency and troubleshooting, the controller tracks data in two types of logs: alarm and event. The Liebert AC4 has a local LCD interface and an RS232 interface.

When an alarm condition arises, the Liebert AC4 displays alarm information, sounds an audible alarm, changes the state of the common alarm relay and turns connected devices on or off according to user configuration. See 1.5 Typical Configuration for a more detailed example.

1.1Methods of Viewing and Configuring the Liebert AC4

The Liebert AC4 features access through two interfaces that allow users to configure the unit, silence alarms, back up logs, and perform many other functions to keep a large or small operation running smoothly and safely.

•LCD—liquid crystal display on the front of the panel

•Service Terminal Interface—accessible via a computer connected directly to an RS232 port

These interfaces permit easy access and configuration of the Liebert AC4, allowing users to view data, silence alarms and have full access to information stored in the controller, including logs of alarms and events.

1.2Data Logs

The two types of data logs—alarm history and event history—can be viewed on the LCD on the front of the Liebert AC4 or the Service Terminal Interface. The logs may also be downloaded to a computer through the Service Terminal Interface.

1.3Available Alarms

The alarms available with the Liebert AC4 are:

•Discrete input alarm (for each digital input)

•Loss of power

•No standby available

•Standby device failed

•No restart available

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Liebert® AC4™

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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 Introduction Methods of Viewing and Configuring the Liebert AC4Available Alarms Data LogsOutside Enclosure Overview LCD for configurationOperation Device Liebert Challenger Typical ConfigurationDevice RS232 LiebertLiebert HimodHimod Controller board components Controller Board Overview24VAC power ConnectorDIP switch LCD connectorLED indicators summary LED IndicatorsOutput LEDs Status LEDs Input LEDs Typical Sequence Unpacking and Preliminary Inspection Installation ConsiderationsInstallation Packing ContentsRequired 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 Numbering keys Connecting Digital Inputs and OutputsConnecting Liebert Precision Cooling Units Connecting Digital InputsSetting the Digital Output Jumpers Connecting Digital OutputsDigital output jumper settings Serial interface connector RS232/EIA5 Connecting Common Alarm OutputsRS232 Connector Common alarm outputsGuide to Liebert AC4 functions Overview of MenusMain Menu Overview Opening Screen OverviewLCD Menu Overview View Status Options Active Alarms View Active AlarmsActive Alarms Clearing Active AlarmsAlarm Log View Alarm LogAlarm Log Alarm log conditionsEvent Log View Event LogEvent Log Event log conditionsDigital input states View Input StatusInput Status Viewing Additional Input DataDigital output states View Output StatusOutput Status Viewing Additional Output DataSilence 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 Valid characters for data entry LoginLogin System and Control OptionsClear Alarms/Logs menu Login ScreenSystem & Control menu Clear Alarms&Logs selected Setup System menuSetup System Setup Inputs Setup System OverviewChange Label Name of Input Define Input as Alarmable or EventDefine Input as Normally Open or Normally Closed Latched / Unlatched Set Up Alarmable Inputs in Latched or Unlatched ModeSet Up Delay Time Delay TimeChange to Reset Y or Not Reset N Setup System Setup Common AlarmReset Common Alarm Message if too many devices entered Setup System Setup ZonesSet Up a Zone Message if too few devices enteredDefine Output as Normally Open or Normally Closed Setup System Setup OutputsSet Mode Define Operating or Standby ModeEnable or Disable an Output Device in Alarm Status Configure Output for Loss of Power Fail-SafeReset Password to the Factory Default Aaaa Setup System Setup System InfoChange Password Change the PasswordSet Date & Time Setup Site IDSetup Site ID Set Date & Time/Automatic Daylight Saving 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 Default settings operation features Setup OperationSelect Setup Operation Setup Operation MenuSet Start Time Hour Interval Turn Automatic Sequencing On or OffActivate / Deactivate Set Interval & Start Time 1- to 99-Day IntervalFailed Standby response Turn Standby Testing On or OffChange Standby Testing Specify Failed Standby ResponseSetup Operation Menu Specify Hold Delay TimeHold Delay Time Restart Delay TimeOverride Output Clear the Event Log Clear Alarms & LogsClear Active Alarms Clear the Alarm 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 button Properties SetupAscii Setup Settings tabClick on the file name for example, AC4.ht Connect to the Service Terminal InterfaceMain Menu For sample screens, see Silence Alarm and Backup Log FilesSetup Menu Overview View Status OverviewMain Menu View Active AlarmsView Active Alarms View Status MenusView Alarm Log View Alarm LogView Input Status View Event LogView Input Status View Event LogView Output Status View Output StatusSection A.5.1 Section A.5.2 Silence AlarmBack Up Event Log File Back Up Alarm Log FileBackup Log Files Alarm Log File Backup Log Files Event Log FileLogin Menu Setup MenuLogin See Description Setup MenuSetup Menu Tips on Using the Service Terminal InterfaceSetup Inputs Setup InputsSetup Zones Setup Common AlarmSetup Zones Setup Common AlarmSetup 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 TestingFailed Standby Hold DelaySetup Operation Failed Standby Setup Operation Hold DelayOverride Output Restart DelaySetup Operation Restart Delay 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 Care Ne tIs t Twor k
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