©
CIAS Elettronica S.r.l.
Ed. 2.4
3.3 Connection to the Control Unit
Connections to the central control unit must use screened cable.
3.3.1 Alarm Contacts: Alarm, Tamper, Fault
The device outputs are:
on the receiver there are 3 voltage free, normally closed contacts to indicate the following
conditions:
•
ALARM, TAMPER, FAULT
on the transmitter there are 3 voltage free, normally closed contacts to indicate the following
conditions:
•
TAMPER, FAULT
There are also two inputs on the transmitter to activate the following functions:
•
Test
•
Synchronisation (Input or Output)
All output contacts on the transmitter and the receiver are solid state relays with a rating of
100mA max.
N.B.
the Alarm, Tamper and Fault contacts, when closed, have a series resistance of
approximately
40 Ohm
. The alarm contacts will activate under the following conditions:
- ALARM RELAY
7- Pre-Alarm on receiver (Note 1) plus at least an Alarm on an infrared barrier
8- Channel Alarm plus at least an Alarm on an infrared barrier
9- Alarm from at least 2 infrared barriers
10-
Disqualification of at least one infrared barrier plus any other alarm
11-
Any Alarm for the “OR” scenario
12-
Alarm from the lowest IR Barrier or highest IR Barrier for the anti-creep and/or
anti-climb scenarios.
- TAMPER RELAY
3- Removal of cover (Radome)
4- Tilt switch operation
- FAULT RELAY
1 Low battery voltage (< +11V )
2 High battery voltage (> +14.8V )
3 Oscillator Fault BF (low frequency) or RF (radio frequency) TX circuit
4 Loss of mains power for 3 hours continuously if using the appropriate input
5 Disqualification of one or more IR barriers on the RX
Note 1
: if the intrusion signal, after passing the start analysis threshold (Walk-test buzzer
sounds intermittently), remains in this condition for about 30 seconds a pre-alarm will be
generated.
Installation Manual
Page
40
of
56
PYTHAGORAS
