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System and Control Options
Liebert
®
AC4
™
46
7.8.4 Specify Hold Delay Time
After an output changes state, the hold delay timer directs the Liebert
AC4 to ignore all inputs in the same zone for the specified time.
This delay is the amount of time that must elapse before the Liebert
AC4 acknowledges a change of state in any input. The default is
10 minutes (displayed as 10 MIN : 00 SEC).
The time delay applies only when a monitored output device changes
from its normal state—for example, the Liebert AC4 detects a closed
contact that is defined as Normally Open.
When the output device returns to its normal state, the Liebert AC4
acknowledges any input change of state immediately.
The hold delay timer also takes effect when the Liebert AC4 is powered
up. All alarms are ignored until the hold delay time expires.
• From the Setup Operation Menu, choose Hold Delay, as shown at right, and press Enter ↵.
• To change the time delay in minutes and seconds (in the range of 00:00 to 99:59):
• For minutes (MIN), press and hold one of the arrow keys
↑↓ scroll through the numbers 00-99.
• Press Enter ↵ to advance to seconds (SEC).
• For seconds (SEC), press and hold one of the arrow keys
↑↓ scroll through the numbers 00-59.
• When finished, press Enter ↵ again.
7.8.5 Specify Restart Time
The restart delay timer directs the Liebert AC4 to wait a specified time
before changing the state of an output. This feature can prevent
needless responses to transient conditions.
If two or more outputs change state simultaneously, the Liebert AC4
begins a new countdown between each output change of state.
The default is 6 seconds (displayed as 00 MIN : 06 SEC).
• From the Setup Operation Menu, choose Restart, as shown at
right, and press Enter ↵.
• To change the time delay in minutes and seconds (in the range of
00:00 to 99:59):
• For minutes (MIN), press and hold one of the arrow keys
↑↓
scroll through the numbers 00-99.
• Press Enter ↵ to advance to seconds (SEC).
• For seconds (SEC), press and hold one of the arrow keys
↑↓ scroll through the numbers 00-59.
• When finished, press Enter ↵ again.
Setup Operation Menu
AUTO SEQUENCING OFF
STANDBY TESTING OFF
FAILED STANDBY N
↑↓=NEXT ↵=SELECT
> HOLD DELAY : 10:00
RESTART : 00:06
Hold Delay Time
HOLD DELAY
10
MIN : 00 SEC
↑↓=NEXT
↵=EDIT
Setup Operation Menu
AUTO SEQUENCING OFF
STANDBY TESTING OFF
FAILED STANDBY N
↑↓=NEXT ↵=SELECT
HOLD DELAY : 10:00
> RESTART : 00:06
Restart Delay Time
RESTART DELAY
00
MIN : 06 SEC
↑↓=NEXT
↵=EDIT