Kidde Fire Systems PEGAsys, Installation, Operation And Maintenance Manual

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M-1 August 1999 76-100016-001
Intelligent Suppression Control/Fire Alarm System
PEGAsys
APPENDIX M
ADDRESSABLE ALARMLINE™ MODULE
M-1 INTRODUCTION
The Addressable AlarmLine
TM
Module (AAM) permits an Alarm-
Line sensor cable to be directly interfaced to the PEGAsys control
panel. This interface will allow for pre-alarm, alarm, and trouble
conditions to be transmitted to the control panel via the RX/TX
(Receive/Transmit) loop. The AAM monitors the resistance of the
sensor cable and generates a pre-alarm (if enabled), alarm, or
overheat output (if enabled) when the resistance drops below the
programmed threshold. The module also supervises the Alarm-
Line cable for opens and shorts, which will generate a fault condi-
tion. All of the pre-alarm, alarm, overheat, and trouble conditions
will be displayed on the Central Control Module (CCM) of the
PEGAsys panel. Up to 255 AAM modules can be connected to a
single RX/TX module. Use of multiple AAMs allows flexibility in
zoning larger installations for location of alarm and zone output
control; the control panel acts as a central display and control in-
terface.
For complete information, please refer to the AlarmLine Addres-
sable Linear Heat Detector Installation, Operation and Mainte-
nance Manual (73.04).
TM
Figure M-1. Addressable AlarmLine™ Module Front Panel
M-2 ADDRESSING AND REGISTERING
Each AAM is shipped from the factory with the default address
of ‘000’. This permits connection to the Power Communication
(PC) line without interfering with devices already on the loop.
Only one device with this default address should be connected
to the PC line at a time. Alternately, the AAM address can be
preset with a hand-held programmer (P/N 74-200013-001) af-
ter which the module can be connected to the PC line. If a hand-
held programmer is not available, the address can be changed
directly at the CCM using the procedure outlined in Chapter 2
of this manual.
M-3 OPERATION
A change in temperature produces a change in resistance be-
tween the loops within the sensor cable (as the temperature
increases, resistance decreases exponentially). This change is
continuously monitored by the AAM, which generates an alarm
or pre-alarm signal at a predetermined level corresponding to
the temperature set point.
The temperature at which the system will alarm is determined
by selecting one of 16 configuration settings using the control
panel’s configuration software or CCM menu options. The ap-
propriate configuration setting for a given set point is estab-
lished by the use of a nomogram incorporating two know factors:
• Maximum ambient temperature of the alarm zone
• Length of the sensor cable
The integrating (averaging) effect of the sensor cable allows it
to detect localized hot spot or a low level temperature increase
over the entire length. For more detailed information, please
refer to the AlarmLine Addressable Linear Heat Detector Instal-
lation, Operation and Maintenance Manual.
M-4 MAINTENANCE OR REPLACEMENT
The AAM is shipped from the factory as an assembled compo-
nent and is not field serviceable. Little or no maintenance is
required.
Refer to Chapters 4 and 5 of this manual and to the AlarmLine
Addressable Linear Heat Detector Installation, Operation and Main-
tenance Manual for further information on maintenance and test-
ing of field devices connected to the FN-2000 panel's RX/TX loop.
M-5 PARTS LIST
Refer to Section 9 of the AlarmLine Addressable Linear Heat
Detector Installation, Operation and Maintenance Manual.
M-6 INSTALLATION
Refer to Paragraph 3-2 of the AlarmLine Addressable Linear
Heat Detector Installation, Operation and Maintenance Manual.
M-7 TESTING
Refer to Section 7 of the AlarmLine Addressable Linear Heat
Detector Installation, Operation and Maintenance Manual.