Specifications

4
Installation Instructions
Read carefully all of the information presented in this chapter and then
install the system in accordance with the wiring diagram (diagram 1).
Cable requirements
Unless otherwise specified below, it is recommended that the system be
installed with solid-core telephone cable such as BT specification CW1308.
Connections No. of cores Cable length Core diameter
Power supply
(1A)
2 2M max. 0.5mm
Lock release
upto 0.5A
2 upto 25M
upto 100M
0.5mm
1.0mm
Alarm output
upto 0.5A
2 upto 25M
upto 100M
0.5mm
1.0mm
Keypad 10 100M max. 0.5mm
Time 2 100M max. 0.5mm
Trig 2 100M max. 0.5mm
In most cases cable length restrictions should not present a problem,
however where longer lengths are required please refer to the
manufacturer for advice.
Fitting the control unit
The 108 PLUS controller is supplied in a lockable steel box which should
be installed in a protected indoor environment. The box contains a number
of mounting holes and conduit holes. If it necessary to make any
alterations to the box, then it is advisable to remove the printed circuit
board (PCB) and to clean-out any metal particles before refitting.
Installing the keypads
Each keypad requires 10 connections to the 108 PLUS controller as shown
in diagram1. Do not run this cable alongside mains cables or other
transmission cables for any great distance. The keypad interface has a
high degree of noise immunity, which is adequate in most situations. With
very long cable runs, especially if operating in a noisy environment, it is
advisable to use a screened cable; connect the screen to DC negative at
the Controller.