Cerber C816 - Page 68

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A.2.5. ZONE DOUBLING with N.C. CONTACTS, with EOL RESISTOR, with TAMPER & WIRE FAULT RECONGNITION
If your security installation requires tamper (open circuit) and wire fault (short circuit) recognition, connect the detection devices with a 1K end of line (EOL)
resistor, as shown in the next figure and ensure the zone wiring attributes are programmed as shown in the next table. This setup will communicate the violated
zones to the control panel which will display them on the keypads. The control panel will also communicate any open loops (tamper trouble) and/or short circuits
(wire fault trouble) as per Tamper / Wire Fault Recognition Options. Do not use devices with N.O. contacts in this zone setup, as this will cause the zones to remain
in alarm.
A.2.6. ZONE DOUBLING with N.O. CONTACTS, with EOL RESISTOR, with TAMPER & WIRE FAULT RECONGNITION
If some off your detection devices will use normally open contacts and your security installation requires tamper (open circuit) and wire fault (short circuit)
recognition, connect the detection devices with a 1K end of line (EOL) resistor, as shown in the next figure and ensure the zone wiring attributes are programmed
as shown in the next table. This setup will communicate the violated zones to the control panel which will display them on the keypads. The control panel will also
communicate any open loops (tamper trouble) and/or short circuits (wire fault trouble) as per Tamper / Wire Fault Recognition Options. Do not use devices with
N.C. contacts in this zone setup, as this will cause the zones to remain in alarm.
ATZ
ATZ
parallel
wiring
EOL
Tamper
recognition
Contact
type
Zone terminal
status
System Response
ON OFF OFF ON N.O.
short circuit A&B Zones Violated
1KΩ ±35%
Zone A Violated & Zone B Secured
2K2 ±35%
Zone A Secured& Zone B Violated
3K2 ±35%
A&B Zones Secured
open circuit
Tamper trouble A&B
ATTRIBUTES
2
set:
ATZ
ATZ
parallel
wiring
EOL Contact type Zone terminal status System Response
ON OFF ON N.C.
short circuit
Wire fault trouble A&B
1KΩ ±35%
A&B Zones Secured
2K2 ±35%
Zone A Secured & Zone B Violated
3K2 ±35%
Zone A Violated & Zone B Secured
4K2 ±35% A&B Zones Violated
open circuit
Tamper trouble A&B
ATTRIBUTES
2
set:
ATZ
ATZ
parallel
wiring
EOL Contact type Zone terminal status System Response
ON OFF ON N.O.
short circuit
Wire fault trouble A&B
1KΩ ±35%
A&B Zones Violated
2K2 ±35%
Zone A Violated & Zone B Secured
3K2 ±35%
Zone A Secured & Zone B Violated
4K2 ±35%
A&B Zones Secured
open circuit
Tamper trouble A&B