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

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.