Intelligent Detector Functions
Operation
IQ-301 PN 50036:F 10/29/2001
115
4.7 Intelligent Detector Functions
4.7.1 Summary of Detector Functions
Table 37 contains a summary of functions for intelligent detectors used with the control
panel.
Table 37 Intelligent Detector Functions
4.7.2 Pre-Alarm Operation/Advanced Warning Addressable
Combustion Sensing (AWACS™)
If a photo or ionization detector exceeds the programmed Pre-Alarm level, a Pre-Alarm
condition occurs: the panel sounder and zone 99 activate; and the
PRE
-
ALARM
WARNING
LED lights. Figure 110 shows a typical message that is sent to the control panel LCD,
LCD-80, printer and History buffer.
Figure 110 Typical Display for a Pre-Alarm Alert Event
Function
Description
Analog Display
The control panel reads and displays analog information from the 99
analog detectors. The display shows the percent of the alarm threshold
for each detector.
Day/Night Sensitivity
Operation
You can program the system to automatically force smoke detectors to
minimum sensitivity during the day. For more information, refer to
“Time Functions” on page 116.
Maintenance Alert
When compensation reaches the limit of the amount of drift
compensation that can be safely applied, the control panel reports a
special trouble condition, per national fire code standards. This
condition also activates if the detector remains at very high or very low
levels for an extended time.
Automatic Test
Operation
The control panel performs an automatic test of each detector every
256 minutes. Failure to meet the test limits causes an “Detector Test
Fail” trouble.
Type Code
Supervision
The control panel monitors hardware device type codes (FSI, FSP,
FST, monitor module, control module, and relay module) for each
installed device at regular intervals (an interval can take up to 30
minutes for full capacity system). If a mismatch of type compared to
the program occurs, the control panel generates a point trouble
labelled
I
NVALID
T
YPE
.
LED Control
Operation
A global program selection to prevent detector LEDs from blinking
during normal operation. A typical application is in a sleeping area
where a blinking light can distract people. As a standard function, the
control panel allows all LEDs to turn on in alarm.
Alarm Verification and
Counter Operation
The control panel performs alarm verification on programmed FSI and
FSP intelligent smoke detectors. The verification time is a global
program selection of 0–30 seconds. Each detector includes a
verification counter, which displays the number of times that a detector
entered verification but did not time-out to alarm. The counter
increments to 99 and holds.
PREALM@SMOKE(PHOTO)
ROOM@5024
ALERT: 0.50/1.00%
11:13A@12/25/97@D66
This example shows a detector programmed for alarm at 1.00% per foot
(30.48 cm) of obscuration (High level). The 50% indicates that the detector
is at the Alert level programmed for 50% of that, or 0.50% per foot (30.48
cm) . The 50% is a real-time display and may change. Alert Pre-Alarms
automatically restore.
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