Edwards LaserSense HSSD-2

Chapter 2: Installation and assembly
30 LaserSense HSSD-2 Aspirating Smoke Detector Installers Handbook
Interfacing with fire alarm panels
Because of the flexible nature of the detector and the many possible
configurations, there are many options for interfacing the detectors to the fire
panel. These include many third party interfaces available from various
manufacturers. Because of this, it is not possible to give a complete list of
interfacing methods but the following pages will give details of the most common
methods that are likely to be used.
Setting the detector address
In order to identify itself to the command module or fire panel, each detector
needs to have a unique address ranging from 1 to 127. The detector address is
simply set on the red DIP switch SW1 located at the lower left of the opened
detector on the bottom of the main circuit board. The switch settings are up for 1
and down for 0, and the detector address is set as a 7-bit binary code (switch 8
equates to a value of 128 and so is outside the usable address range).
Figure 20 shows an example where the address equates to “01100011” in binary,
or:
(1 x 1) + (1 x 2) + (0 x 4) + (0 x 8) + (0x 16) + (1 x 32) + (1 x 64) + (0 x 128) = 99
Figure 20 : Sample DIP switch settings
The full range of available addresses and their relevant switch settings are
provided in Table 2 for reference.
Note: Addresses chosen for detectors do not have to be consecutive or in a
given order as long as they are all different.
Table 2: Address table
Address 1 2 3 4 5 6 7 8 65 1 0 0 0 0 0 1 0
1 1 0 0 0 0 0 0 0 66 0 1 0 0 0 0 1 0
2 0 1 0 0 0 0 0 0 67 1 1 0 0 0 0 1 0
3 1 1 0 0 0 0 0 0 68 0 0 1 0 0 0 1 0
4 0 0 1 0 0 0 0 0 69 1 0 1 0 0 0 1 0
5 1 0 1 0 0 0 0 0 70 0 1 1 0 0 0 1 0
6 0 1 1 0 0 0 0 0 71 1 1 1 0 0 0 1 0
7 1 1 1 0 0 0 0 0 72 0 0 0 1 0 0 1 0
8 0 0 0 1 0 0 0 0 73 1 0 0 1 0 0 1 0
9 1 0 0 1 0 0 0 0 74 0 1 0 1 0 0 1 0
10 0 1 0 1 0 0 0 0 75 1 1 0 1 0 0 1 0
11 1 1 0 1 0 0 0 0 76 0 0 1 1 0 0 1 0
12 0 0 1 1 0 0 0 0 77 1 0 1 1 0 0 1 0