AFP-200 Instruction PN 15511:F2 10/11/99 101
Action Level Pre-Alarm Function
If a detector reaches a level that exceeds the pro-
grammed Action threshold, an Action condition is
indicated. The display shown to the right appears if a
detector is in Action level.
ACTION indicates that the Action level is reached.
70% is the real-time approximate obscuration
reading. Suppose Zone 99 was programmed for
ACTION = 60% OF ALARM. Any measurement over .60 X 2.00% = 1.20% would cause an Action Pre-Alarm.
The following functions are performed at Action level:
• The message is sent to the LCD-80, printer, and history file.
• The Pre-Alarm LED and piezo sounder pulse until acknowledged.
• Zone 99 is activated. Zone Z00 (general alarm) is not activated, nor are trouble and alarm relays.
• The fifth zone programmed (not the first four) for this detector is activated. The fifth zone is the right-most
entry on line three of the point programming screen. This zone may be used to control functions of a detector
or group of detectors on Action level. The fifth zone activations will also allow ACS annunciation by a
detector or group of detectors in Action Pre-Alarm state.
• The Pre-Alarm condition and the zone programmed will latch until System Reset, even if the sensitivity drops
below the Action or Alert level.
• A subsequent alarm condition for this detector will clear the Action indication from the LCD display and
keypad LED, but will not reset the fifth zone (the fifth zone is also on the alarm list).
Pre-Alarm Programming
You can adjust the setting of the two Action and Alert
levels as desired. The Special Zone 99 display is
shown to the right.
ALERT=70% OF ALARM means that every photo
and ion detector will give an Alert indication when its
present sensitivity reaches 70% of its alarm level.
The “ACTION=00% OF ALARM” means that there
will be no Pre-Alarm Action level in the system.
The numbers 70% and 00% are default values, and
may be adjusted in the range from 00% to 99%. ACTION=00% means no Pre-Alarm, therefore the default is no
Action level. The control panel's software ensures that the Action level is higher than the Alert level (or the
Action level is zero) and that both are below 100%.
The Alert and Action program levels are global settings, meaning they apply to all SDX or CPX detectors.
However, different Pre-Alarm Action can be selected for each detector by using different alarm levels. For
example, if the Alert level is set at 50% of alarm, and detector D13 is set to alarm at 2.00%, D13 will Pre-Alarm
at 1.00%, while if detector D14 is set to alarm at 1.00%, it will Pre-Alarm at 0.50% per foot obscuration.
There are applications where only one level of Pre-Alarm function is necessary, but the Pre-Alarm must be
latching. This can be done by programming ALERT=00% and only using the Action level. Also, if non-latching
operation is desired, ACTION=00% can be selected to allow use of Alert level only. Note: Only the Action
level will provide ACS point annunciation.
PRE-ALARM@ZONE@99
ALERT=70%@OF@ALARM
ACTION=00%@OF@ALARM
PREALM@SMOKE(PHOTO)
WEST@HALLWAY@FLR@5
70%@2.0%@ACTION
12:00P@12/25/97@D13
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