ADT Security Services 400 Fire Alarm

3. Operating Modes Fire Alarm
6Unimode 400 Operations PN 50709:A 10/20/97
If the trouble clears (before or after pressing <Acknowledge/Step>), the control panel
sends a Clear Trouble message to the printer. Figure 5 shows a sample Trouble
Message:
Figure 5 Sample Trouble Message
If all troubles clear and no supervisory or fire conditions exist, the control panel does
the following:
•Returns to Normal mode;
•Sends an “All Systems Normal” message to the LCD display, the history file, an
optional ADT-LCD-80, an optional printer; and
•Restores troubles automatically even if troubles are not acknowledged.
Pressing <Alarm Silence> when only troubles exist, gives the same result as pressing
<Acknowledge/Step>. The Alarm Silenced LED does not light unless an alarm exists
in the system.
If multiple trouble conditions exist in the system, the LCD and optional ADT-LCD-80
displays automatically step through each trouble event every 3 seconds in the following
order:
1. Alarms, in order of address;
2. Supervisory, in order of address; or
3. Troubles, in order of address.
Press <Acknowledge/Step> and the display stops on the current trouble event for
1minute. Press <Acknowledge/Step> to continue.
Fire Alarm
The system goes into Fire Alarm mode when the control panel detects a fire alarm.
During Fire Alarm mode, the control panel does the following:
•Produces a steady audible tone;
•Activates the System Alarm relay (MPS-400, TB3) and flashes the System Alarm
LED;
•Displays Alarm in the status banner on the LCD display;
•Latches alarms so they cannot clear until the alarm initiating device returns to its
normal condition and the operator resets the control panel;
•Initiates any Control-by-Event actions;
•Starts timers (such as Silence Inhibit, Auto Silence); and
•Activates the general alarm zone (Z00).
Figure 6 Fire Alarm Display
TROUBL CONTROL MODULE ADDRESS 21 Z00 OPEN CIRCUIT 08:10A 08/20/95 M21
TROUBL CONTROL MODULE ADDRESS 22 Z00 OPEN CIRCUIT 08:12A 08/20/95 M22
ALARM:PULL STATION I.C.U. WEST WING
VISITORS LOUNGE 11:55PM TUE 02/11/97
Status banner ALARM