Installation
23
Installation and programming manual
4-8-4
Double-Zone balancing
Double zones without EOL resistor can discriminate 5
conditions on the entire terminal:
•
standby on both zones
•
alarm on zone 1 and standby on zone 2
•
alarm on zone 2 and standby on zone 1
•
alarm on both zones
•
tamper (wire cutting)
For each of these, the SmartLink reads different
resistance values on the terminal, expressed below in
Ohm.
4-8-5
Double Zone balancing
with EOL
Double zones with EOL resistors can discriminate 6
conditions on the entire terminal:
•
standby on both zones
•
alarm on zone 1 and standby on zone 2
•
alarm on zone 2 and standby on zone 1
•
alarm on both zones
•
tamper (wire cutting)
•
tamper (short-circuit)
For each of these, the SmartLink reads different
resistance values on the terminal, expressed below in
Ohm.
Ohm
Zone 1
Zone 2
(double)
> 3900 + 6800
tamper
3900 + 6800
alarm
alarm
6800
standby
alarm
3900
alarm
standby
0
standby
standby
Alarm
+12V GND
Tamper
Alarm
+12V GND
Tamper
3K9Ohm
1/4W
6K8Ohm
1/4W
Zone 1
Zone 2
Ohm
Zone 1
Zone 2
(double)
> 2 x 3900 + 6800
tamper (wire cutting)
> 2 x 3900 + 6800
alarm
alarm
3900 + 6800
standby
alarm
2 x 3900
alarm
standby
3900
standby
standby
0
tamper (short-circuit)
Alarm
+12V GND
Tamper
Alarm
+12V GND
Tamper
3K9Ohm
1/4W
6K8Ohm
1/4W
Zone 1
Zone 2