FireFinder
™
Installation Commissioning & Operation
Page 82
17
Accessing a Loop, Sensor or Zone
LOOP OR SENSOR
1.
From the default display, press
LOOP
2.
Enter the
loop number
you wish to interrogate then press
SENSOR.
3.
Press the button for the
sensor number
.
4.
Press the
TO
button if you wish to access a range of sensors on the loop,
5.
Press the
DISPLAY
button if you wish to display the status of a sensor,
6.
Press the
ISOLATE
button if you wish to isolate a sensor then
ACKNOWLEDGE
7.
Press the
DE-ISOLATE
button to de-isolate a sensor.
LOOP
1
ABC
SENSOR
JKL
4
TUV
7
TO
DISPLAY
For Multiple Devices
ISOLATE
ACKNOWLEDGE
Figure 111: Steps for Isolating Single and / or Multiple Devices
ZONE
1.
From the default display, press
ZONE
2.
Press the button for the
zone number
.
3.
Press the
TO
button if you wish to access a range of zones,
4.
Press the
DISPLAY
button if you wish to display the status of a zone,
5.
Press the
ISOLATE
button if you wish to isolate a zone then
ACKNOWLEDGE
6.
Press the
DE-ISOLATE
button to de-isolate a sensor.
18
List of Compatible Devices
18.1 Short Circuit Isolation
The Ampac modules listed above feature built-in Short Circuit Isolation that continually monitors the Apollo
detection loop. In the event the loop voltage drops below 14.0V DC, an open circuit condition is introduced
on the negative line of the loop. This action effectively isolates the short circuit condition, and allows the
device to function by drawing power from the unaffected side of the loop. The isolated section of the loop is
tested every four (4) seconds, and is automatically reconnected when a loop voltage of greater than 14 V
DC can be maintained.
Note:
Should an OC/SC condition eventuate on a loop the LEDs A & B on the Loop Termination Board will
both be illuminated.
Figure 112: Short Circuit Isolation Block Diagram
Isolator
Isolator
Isolator
Interface
Section A
Section B
Direction of Current Flow
Direction of Current Flow
Panel Loop Termination Board
L+ L-
L- L+
Detectors
LEDs A & B
Loop 1
Summary of Contents for SP Series
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