Liebert AC4 用户手册

The AC4’s operation features allow you to set up a rotation sequence to 

alternate which devices are operating and which are placed on 

Standby, as well as test devices while in Standby mode and specify 

what to do when a Standby device goes into alarm as it is powered up. 

You may also specify delay times after an output changes state, direct-

ing the AC4 to wait before acknowledging inputs or turning an output 

on or off.
To change any operation features:

• 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

↵

.

• From the Setup System Menu, shown at right, use the arrows

↑↓

 to

 

choose Setup Operation and press Enter

↵

.

• Use the steps following Table 18 to access any of the Setup Operation options.

Table 18 shows the default settings for operation options: automatic sequencing, standby testing, 

failed standby, hold delay and restart.
Table 18

AUTO SEQUENCING

OFF (Deactivated)

ON (Activated), 12h (Activated for 12-hour intervals)

STANDBY TESTING

OFF (Deactivated)

ON (Activated)

FAILED STANDBY

N (Deactivated)

Y (Activated)

HOLD DELAY

10:00 (No delay)

Any time (in minutes and seconds) from 00:00 to 99:59

RESTART

00:06 (No delay)

Any time (in minutes and seconds) from 00:00 to 99:59

SETUP INPUTS
SETUP COMMON ALARM
SETUP ZONES

↑↓

=NEXT

↵

=SELECT

SETUP OUTPUTS
SETUP SYSTEM INFO

STANDBY TESTING OFF
FAILED STANDBY

N

↑↓

=NEXT

↵

=SELECT

HOLD DELAY : 10:00
RESTART

: 00:06