System and Control Options

7.6Setup System - Setup Outputs

The AC4 has four outputs that may be configured individually. These outputs correspond to the four numbered inputs. For example, Device_1 is the unit connected to Input 1 and to Output 1.

The output name is the same as the input name, as described in 7.3.1 - Change Label (Name of Input).

To configure an output:

Log In and Choose Setup System

• From the Main Menu, use the arrows ↑↓ to choose System and Control, then press Enter (see 7.1 - Login for help).

• Enter your password at the Login screen.

• From the System and Control Menu, use the arrows ↑↓ to choose Setup System, then press Enter .

Select an Output to Configure

• From the Setup System Menu, shown at right, use the arrows ↑↓ to choose Setup Outputs and press Enter .

From the Select Output Menu, choose an output—for example, Device_1—and press Enter .

Setup System Menu

SETUP INPUTS SETUP COMMON ALARM SETUP ZONES

↑↓ =NEXT =SELECT

>SETUP OUTPUTS SETUP SYSTEM INFO SETUP OPERATION

Select Output Menu

SELECT OUTPUT

>DEVICE_1 NO-OP-E DEVICE_2 NO-ST-E

=SELECT↑↓ =NEXT

DEVICE_3 NO-NU-D DEVICE_4 NO-NU-D

Table 17 shows digital output features and their default settings: you

may define an output as normally open or normally closed, set the device’s mode—operating, standby or not used—and specify whether to disable the device when an alarm occurs.

Use the steps following Table 17 to change the default settings for any digital output.

Table 17 Default settings - digital outputs

Feature

Default

Other Options

 

 

 

NORM OPEN/CLOSE

NO (Normally open)

NC (Normally closed)

 

Outputs 1-3: OP (Operating)

OP (Operating)

MODE

ST (Standby)

Output 4: ST (Standby)

 

NU (Not Used)

 

 

 

 

 

IN ALARM

E (Enable)

D (Disable)

7.6.1Define Output as Normally Open or Normally Closed

Each output may be set up as Normally Open (NO) or Normally Closed (NC). The default setting for all output points is NO (Normally Open).

From the Setup Outputs Menu, shown at right, use the arrows ↑↓ to choose Norm Open/Close and press Enter .

• To change the normal state for this output, use the arrows ↑↓ to choose the state:

NO (Normally Open)

NC (Normally Closed)

Press Enter .

Setup Outputs Menu

SETUP DEVICE_1

> NORM OPEN/CLOSE: NO

MODE: OPERATING

↑↓ =NEXT

=SELECT

IN ALARM: ENABLE

Change State

SET TO NORMAL OPEN OR NORMAL CLOSE? NO

↑↓ =NO/NC

=END

33

Page 39
Image 39
Liebert AC4 user manual Setup System Setup Outputs, Define Output as Normally Open or Normally Closed

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.