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1.9
Typical Sequence
Figure 4 shows a typical sequence of how the AC8 functions after detecting a change in a monitored
device. Many responses depend on configuration settings. This example shows what happens when a
digital input changes state—assuming the input is defined as alarmable—and when the condition
returns to normal.
Figure 4
Example of typical sequence
RESPONSES TO AN ALARM
UNIVERSAL MONITOR
05-SEP-02 14:04:13
V5.100.0
PRESS
=STATUS/SETUP
ESC
ESC
DEVICE_1
ALARM
CONTACT CLOSED
30-SEP-04
16:23:04
DEVICE_1
ALARM
CONTACT CLOSED
DEVICE_4 STARTED
30-SEP-04
16:23:10
ALARM CONDITION DETECTED
A device connected to the AC8
changes state.
The horn sounds (audible horn on
the controller board—silence horn by
pressing any key on the LCD keypad)
The LCD flashes
(except during setup)
Pager numbers are dialed
(up to four configured pagers)
Service number is dialed
(if configured)
User setup determines output
control (for example, the device
in alarm might be disabled and a
standby device set to operate)
Entry in Alarm Log
Condition (
)
ALARM
& state (
)
CONTACT CLOSED
Entry in Active Alarm Log
Condition (
)
ALARM
& state (
)
CONTACT CLOSED
Entry in Event Log
Status change
(
)
DEVICE_4 STARTED
RETURN-TO-NORMAL SEQUENCE
UNIVERSAL MONITOR
05-SEP-02 14:04:13
V5.100.0
PRESS
=STATUS/SETUP
ESC
ESC
ALARMS CLEARED
30-SEP-04
16:24:04
DEVICE_1 STARTED
DEVICE_2 STARTED
DEVICE_3 STARTED
DEVICE_4 OFF
30-SEP-04
16:24:06
7
Introduction
RETURN TO NORMAL
The device that triggered the alarm
returns to its normal state.
The alarm is cleared
(automatically if Unlatched; must be
cleared manually if Latched)
The horn stops sounding
(if user hasn't silenced it)
The LCD stops flashing
Pager numbers & service
number are dialed
Return-to-normal message sent
Entry in Alarm Log
(
)
ALARMS CLEARED
Entry in Event Log
Actions in response to event
(
DEVICE_1 STARTED,
)
DEVICE_4 OFF
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