Pre-Alarm Operation (AWACS) 3. Operating Modes
Unimode 400 Operations PN 50709:A 10/20/97 11
Pre-Alarm Operation (AWACS)
Note: Refer to the
Unimode400 Programming
manual for more information on
AWACS applications.

If an 1251/2251 or 1551/2551 detector exceeds the programmed Pre-Alarm level, a Pre-

Alarm condition occurs: the panel sounder and zone F9 activate; and the Pre-Alarm

LED lights. Figure 8 shows a sample Pre-Alarm message—sent to the LCD display,

optional ADT-LCD-80, optional printer, and history file—for a control panel

programmed for an Alert Pre-Alarm.

Figure 8 Alert Pre-Alarm Message
Note: ALERT Pre-Alarms
automatically restore. If programming a control panel for an ACTION Pre-Alarm, the display remains the

same, but the word “Action” replaces “Alert”. The control panel latches for ACTION

Pre-Alarms and applies the programmed control functions.

Time Functions

Overview The control panel includes a real-time clock that provides time-of-day, date, and day-

of-week. The clock includes a lithium battery backup. Time normally displays in a

12-hour time format with month/day/year. Table 8 contains descriptions and typical

uses for time functions.

Table 8 Control Time Functions

PREALARM SMOKE (PHOTO) I.C.U WEST WING
ALERT 105%/5 12:01A02/01/97D101
Detector programmed for a Pre-Alarm level of 5.
Shows the detector has reached 105%
of the programmed Pre-Alarm level.
The 105% is a real-time display and
tracks smoke levels.
Shows the detector
programmed for ALERT
Pre-Alarm level.
Time
Function Description Typical Uses
Time Control
Command Zones F5 and F6 are reserved for
control-by-time special functions,
intended for ancillary (non-fire)
applications (such as lighting
control, setting a thermostat, and so
forth).
For example, program zones F5
and F6 to activate at one time of
day and deactivate at another time,
on certain days of the week. You
can turn a non-fire control point on
and off, by using zone F5 or F6.
Day/Night
Sensitivity
Adjust
If a 1551/2551, 1251/2251, or 3251
detector CBE lists zone F5 or F6,
the control panel sets the detector
sensitivity to the minimum (low)
setting when zone F5 or F6 is
activated by the programmed date/
time in its CBE. When zone F5 or
F6 deactivates, the detector
sensitivity returns to the
programmed setting.
For day/night sensitivity use,
consider zones F5 and F6 as Day
zones.
Holiday The control panel reserves zone F7
for setting holiday dates (up to 9
days). When the current date
matches any of the nine holiday
dates, the control panel activates
zone F7.
Other uses for zone F7 include: a
special day-of-year control; or an
8th day in programming zones F5
and F6.