Installation manual

IRIS Touch 400 Range Dialler Installation Manual V1.4
11
Reference ground
pins
Pin inputs
1
4
4K7 Resistor
15K Resistor
1
4
Reference ground
pins
Pin inputs
7.1. Installation
Each PIN input is designed to be connected in a loop via an open/close contact source
from an alarm panel, or other device, to a reference ground PIN [8] available on the IRIS
dialler, as shown below:
Opening the contact (i.e. loop is open circuit) generates an alarm signal.
Closing the contact generates the equivalent restore signal.
It is also possible to link the contacts to the IRIS dialler via sense resistors so that an open
or short circuit tamper on the loop can be detected and the monitoring centre alerted. In
this case the connections should be made as shown below:
Note: For this feature to work correctly it is essential that the resistors are connected at
the contact end of the loop and not the dialler end and that this monitoring is enabled
on the dialler, which can either be done in the Installation Wizard for all inputs in
use, or for each input individually in the Settings menu. The monitoring centre must
also enable the monitoring of this facility on the dialler within the IRIS receiving system.