NFS2-3030 Programming Manual — P/N 52545:K1 03/20/2012 129
Detector Status Display Intelligent Sensing Applications
TROUBLE PREALARM <Trouble Status>*
*The field <Tr
ouble Status> will contain a device trouble message. Refer to this panel’s Operations
manual for information on these messages.
Line 7 - The custom label for this point
Line 8 - Continuation of the point’s custom label, first zone, and device type
Lines 9, 10 - A display of all the zones that contain the current
point being
read.
Lines 11through 14 -These lines will have values in th
em only if the device is a detector. They will
not display for wireless detectors.
Line 11
VALUES:
The screen displays the Alarm and Prealarm values that are in ef
fect when read status is
requested. For example, if occupied settings are in effect, occupied values will display
121% OF ALARM - This field gives the detector reading as it relates to its preprogrammed
alarm level value (indicated in the next line on the screen). The example above shows the
detector exceeding the alarm level by 21%.
145% OF PREALARM - This field gives the detector reading as it relates to its
preprogrammed prealarm level value (indicated in the next line on the screen). The example
above shows the detector exceeding the prealarm level by 45%.
If the detector is an Alert heat detector, the value is indicated by a
temperature reading
(example: 148 DEGREES F).
Line 12
The screen displays the Alarm and Prealarm levels that are in ef
fect when read status is
requested. For example, if unoccupied settings are in effect, they will display.
ALARM: 6=1.66% - Six is the preprogrammed alarm level value for this detector: its value is
1.66%, indicating the percent per foot obscuration value assigned to level 6.
PREALARM: 3=0.47% - Three
is the preprogrammed alarm level value for this detector: its
value is 0.47%, indicating the percent per foot obscuration value assigned to level 3.
Line 13
ACTION/STATUS: NONE/VERY CLEAN - This displays the maintenance status of the
device. The message that appears in this field depends on the drift compensation value. A
detector will automatically compensate for environmental contaminants and other factors over
time, until the tolerance value has been exceeded. The FACP will signal a trouble condition
when this level has been reached. Refer to the following table for messages and required
action.
Line 13 will not display for Acclimate detectors.
Message Drift Compensation % Description
None/Very Clean Less than 50 No action necessary. The detector readings are near
ideal.
None/F
airly Clean 50 - 69 No action necessary. The detector will activate at the
se
lected sensitivity level.
Needs Cleaning 70 - 79 Clean the detector soon. The detector may cause a
false alarm because it has reached the
drift
compensation tolerance value.
Needs Immediate Cleaning 80 - 100 Clean immediately! The detector is a false alarm ri
sk.
The drift compensation tolerance value has been
exceeded.
Table D.3 Drift Compensation Messages/Actions
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