Liebert AC4 用户手册
System and Control Options
45
7.8.4 Specify Hold Delay Time
After an output changes state, the hold delay timer directs the 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 AC4
This delay is the amount of time that must elapse before the 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
The time delay applies only when a monitored output device changes
from its normal state—for example, the AC4 detects a closed contact
that is defined as Normally Open.
When the output device returns to its normal state, the AC4 acknowl-
When the output device returns to its normal state, the AC4 acknowl-
edges any input change of state immediately.
The hold delay timer also takes effect when the AC4 is powered up. All
The hold delay timer also takes effect when the 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 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 AC4 begins a
If two or more outputs change state simultaneously, the AC4 begins a
new countdown between each output change of state.
The default is 6 seconds (displayed as 00 MIN : 06 SEC).
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
STANDBY TESTING OFF
FAILED STANDBY
N
↑↓
=NEXT
↵
=SELECT
> HOLD DELAY : 10:00
RESTART
: 00:06
Hold Delay Time
HOLD DELAY
10 MIN : 00 SEC
10 MIN : 00 SEC
↑↓
=NEXT
↵
=EDIT
Setup Operation Menu
AUTO SEQUENCING OFF
STANDBY TESTING OFF
FAILED STANDBY
STANDBY TESTING OFF
FAILED STANDBY
N
↑↓
=NEXT
↵
=SELECT
HOLD DELAY : 10:00
> RESTART
: 00:06
Restart Delay Time
RESTART DELAY
00 MIN : 06 SEC
00 MIN : 06 SEC
↑↓
=NEXT
↵
=EDIT