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4-1
S E C T I O N 4
System Configuration
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Hardwire Zones
Hardwired Zones: Consist of 4 (OMNI-400 series) or 6 (OMNI-600 series) on-board hardwired zones.
System options allow for all hardwired zones to be configured as E.O.L., N.C., N.O., double-balanced, or
configured for zone doubling.
Standard Mode: Each zone may be programmed as EOL 2.2k, normally closed or normally open. Zone
4 (OMNI-400 series) or zone 6 (OMNI-600 series) can be set as a fast zone (for normally closed loops
only). Refer to the connection diagram for wiring connections.
Double-Balanced Zones: In this configuration, tampers may be detected for both shorted and opened
loops. Tamper conditions will cause an alarm if armed and a fault if disarmed, with visible tamper
indication on the keypad. Up to nine 2.2k resistors are wired in series across normal shorted detectors,
with one 2.2k end-of-line resistor. Any device that opens adds 2.2k to the loop causing an alarm. If the
loop resistance exceeds 22k, the loop is considered tampered. If the system is set for double-balanced,
this will override any individual zone settings.
Zone Doubling: Up to 8 (OMNI-400 series) or 12 (OMNI-600 series) zones may be used as hardwired
when this zone option is selected. The zones are consecutive on each physical loop. The low zone uses a
3.3k resistor and the next zone uses a 7.5k resistor. The loop is wired with normally shorted devices in
parallel. For example, if zone doubling is programmed to begin on Zone 1, then Loop 1 uses the 3.3k
resistor for Zone 1 and the 7.5k resistor for zone 2; Loop 2 contains zones 3 and 4, etc. In Zone
programming (Programming Submode 2, Question 32, L1 and L2), the value of 00 disables zone
doubling; otherwise, program the first loop that zone doubling is to begin. For example, programming a
“5” in the zone doubling question means that loop 5 will contain zones 5 and 6, and loop 6 will contain
zones 7 and 8.
Cross Zoning: Two groups of 2-zone crosses can be programmed. Two cross-zone timers are
programmable (Question 35, L3 [timer 1] and L4 [timer 2] in Programming Submode 2: Zone
Programming) in 15-second increments (15 sec. to 4 min.) Cross-zone processing only occurs when
controlled zones are armed or on 24-hour zones.
Cross zoning functions in either of 2 ways:
•
If the group contains 2 different zones, when the first zone in the group is tripped, the cross-zone
timer loads and starts counting. An alarm will occur if:
The other zone in the same group trips before the timer reaches 0. This causes an alarm on the
second zone to trip. The first zone to trip will only go into alarm if it is still violated at the time
that the second zone causes an alarm.
or
The timer expires and the zone that started the timer is still violated and has not restored
during the entire timing cycle.
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