Liebert AC4 user manual Login, System and Control Options, Valid characters for data entry

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System and Control Options

7.0SYSTEM AND CONTROL OPTIONS

NOTE

For ease of understanding, this section uses the LCD interface to illustrate most instructions, except for features that are available only through the Service Terminal Interface. All Service Terminal Interface screens appear in Appendix A - Service Terminal Interface.

The System and Control menu allows you to configure the AC4—setting up inputs and outputs and system features such as date and time. This menu also provides a vehicle for manually changing the state of an output to ON or OFF, clearing active alarms and deleting records from the AC4’s alarm and event logs.

The arrows ↑↓ are used to scroll through the menu. The Enter ↵ key is used to select the menu item and enter new information. Table 12 shows characters that may be entered in labels and values.

Table 12 Valid characters for data entry

Alphanumeric

A-Z, 0-9

Special characters

space [ ] ^ _ ! " # $ % & ( ) * + - / , . ; < = > @

The System and Control options require a password to prevent unauthorized users from making changes to the system.

This section presents step-by-step instructions for each of the following:

•Login - enter the password

•Setup System - configure inputs, outputs, system features

•Override Output - manually override automatic control of outputs; release the override

•Clear Alarms & Logs - clear active alarms; delete records from the alarm and event logs

NOTE

If an alarm occurs while a user is logged on, the LCD backlight will flash and the audible alarm will sound. To obtain specific information about the alarm, you must access the Active Alarm screen (see 5.1 - View Active Alarms) or the Alarm Log (see 5.2 - View Alarm Log).

7.1Login

Users must enter a password to access any of the system and control options. The password consists of four characters (see Table 12 for valid characters). (To set up or change the password, see 7.7.1 - Change Password.) The default password is AAAA.

To log in:

• From the Main Menu, use the arrows ↑↓ to choose System and Control, then press Enter ↵ , as shown at right.

•Use the arrows ↑↓ to choose System and Control, and press Enter ↵ . The Login menu appears.

•To enter your password:

•Use the arrows ↑↓ to choose a character.

•Press Enter ↵ to advance to the next character position.

•When finished, press Enter ↵ again.

The System and Control Menu appears next, with these options that are described in the following sections:

•Setup System (Section 7.2 - Section 7.7)

•Override Output (Section 7.9)

•Clear Alarms & Logs (Section 7.10)

NOTE

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

If, after logging in, you press the ESC key to return to a previous screen that is not password- protected, you must log in again, including entering your password if you wish to access password-protected functions.

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Contents AC4 MonitoringPage Table of Contents Setup System Setup Common Alarm 7.5 Setup System Setup Zones Appendix a Service Terminal Interface Setup MenuFigures Methods of Viewing and Configuring the AC4 Available AlarmsData Logs IntroductionOperation LCD for configurationOutside Enclosure Overview Device RS232 Liebert Himod Typical ConfigurationDevice Liebert Challenger Controller Board Overview Controller board componentsConnector RS232 DIP switchLCD connector 24VAC powerOutput LEDs Status LEDs Input LEDs LED IndicatorsLED indicators summary Typical Sequence Installation Considerations InstallationPacking Contents Unpacking and Preliminary InspectionMounting the Panel Surface-Mounting the AC4Required tools Flush-Mounting the AC4 Connect Power to the AC4 Electrical connections to panelWiring specifications Wiring SpecificationsWiring and Connections Connecting Digital Inputs and Outputs Connecting Liebert Environmental UnitsConnecting Digital Inputs Connecting Digital OutputsConnecting Common Alarm Outputs RS232 ConnectorSetting the Digital Output Jumpers Digital output jumper settingsOverview of Menus Guide to AC4 functionsLCD Menu Overview Opening Screen OverviewMain Menu Overview View Status Options View Active Alarms Active AlarmsClearing Active Alarms Active AlarmsView Alarm Log Alarm LogAlarm log conditions Alarm LogView Event Log Event LogEvent log conditions Event LogView Input Status Input StatusViewing Additional Input Data Digital input statesView Output Status Output StatusViewing Additional Output Data 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 Login LoginSystem and Control Options Valid characters for data entryLogin Screen System & Control menu Clear Alarms&Logs selectedSetup System menu Clear Alarms/Logs menuSetup System Overview Setup System Setup InputsDefine Input as Normally Open or Normally Closed Define Input as Alarmable or EventChange Label Name of Input Set Up Alarmable Inputs in Latched or Unlatched Mode Set Up Delay TimeDelay Time Latched / UnlatchedReset Common Alarm Setup System Setup Common AlarmChange to Reset Y or Not Reset N Setup System Setup Zones Set Up a ZoneMessage if too few devices entered Message if too many devices enteredSetup System Setup Outputs Define Output as Normally Open or Normally ClosedDefine Operating or Standby Mode Enable or Disable an Output Device in Alarm StatusConfigure Output for Loss of Power Fail-Safe Set ModeSetup System Setup System Info Change PasswordChange 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 Setup Operation Select Setup Operation Setup System MenuSetup Operation Menu Default settings operation featuresTurn Automatic Sequencing On or Off Activate / DeactivateSet Interval & Start Time 1- to 99-Day Interval Set Start Time Hour IntervalTurn Standby Testing On or Off Change Standby TestingSpecify Failed Standby Response Failed Standby responseSpecify Hold Delay Time Hold Delay TimeSetup Operation Menu Restart Delay TimeOverride Output Clear Alarms & Logs Clear Active AlarmsClear the Alarm Log Clear the Event LogAC4 Specifications SpecificationsAppendix a Service Terminal Interface Comparison of Functions LCD and Service Terminal InterfaceConnecting to the Service Terminal Interface Specify COM Port Connection COM1 Port SetupCreate a Connection Properties Setup Ascii SetupSettings tab Ascii Setup buttonConnect to the Service Terminal Interface Click on the file name for example, AC4.htSilence Alarm and Backup Log Files Setup Menu OverviewView 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 StatusSilence Alarm Section A.5.1 Section A.5.2Back Up Alarm Log File Backup Log Files 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 Setup Site ID Set Date & TimeBackup & Upload Configuration File Backup Backup & Upload Configuration File Upload Factory DefaultsFirmware Update Service Terminal Interface only Firmware UpdateAuto Sequencing Setup OperationSetup Operation Auto Sequencing Standby Testing Setup Operation Standby TestingHold Delay Setup Operation Failed StandbySetup Operation Hold Delay Failed StandbyRestart Delay Setup Operation 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 Technical Support/Service Company Behind the ProductsLocations 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.

One of the main features of the Liebert AC4 is its adaptability to various configurations and applications. It can be deployed in both hot aisle and cold aisle containment setups, making it versatile for different data center designs. This flexibility allows facilities to implement cooling strategies that align perfectly with their specific layouts and operational requirements.

The Liebert AC4 employs cutting-edge, variable-speed fans that enhance energy efficiency. These fans adjust their speed according to the cooling load, ensuring that the system operates at peak efficiency while significantly reducing energy consumption. This feature is essential in critical environments, where minimizing operational costs is often as important as maintaining optimal temperatures.

In addition to energy-efficient cooling, the Liebert AC4 integrates advanced monitoring and control technologies. With built-in intelligence and compatibility with the Liebert SiteScan monitoring system, users can ensure real-time visibility into their cooling operations. This monitoring capability enables data center managers to make informed decisions and swiftly address any cooling anomalies, minimizing the risk of overheating and downtime.

Furthermore, the system is designed to be easy to install and maintain, reducing downtime during setup and upkeep. The modular design allows for scalability, enabling organizations to expand their cooling capabilities as their needs grow.

The Liebert AC4 also features a robust construction that enhances reliability and durability, making it an ideal choice for environments where equipment uptime is critical. Its streamlined design not only optimizes airflow and cooling distribution but also contributes to aesthetic considerations in professional settings.

In conclusion, the Liebert AC4 combines efficiency, versatility, and advanced technologies to deliver a reliable cooling solution for modern data centers and critical facilities. Its variable-speed fans, flexible configurations, and advanced monitoring capabilities position it as a leader in the competitive field of cooling solutions, ensuring that critical equipment remains operational and efficient. Organizations looking to enhance their cooling strategies will find the Liebert AC4 to be an invaluable asset in today’s fast-paced digital landscape.
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