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Zones
Wiring Zones
The zones on the Galaxy 16 and 16 plus control panels are end-of-line moni-
tored. The zone is in the Closed condition when the system reads 1 kΩ and in
the Open condition when the system reads 2 kΩ. The transition from 1 kΩ to 2
kΩ generates an alarm condition. Refer to Table 1.1 Zone Resistance and
Conditions for details of the zone resistance and resulting conditions.
The circuit debounce time (the period the zone must remain open to register a
change in condition) is 300 milliseconds.
Z
o
n
0
-
7
2
1
1
3
0
1
2
5
Table 1.1 Zone Resistance and Conditions.
Note: The values in Table 1.1 operate within a tolerance band of ±4%.
The standard wiring of a detector into a zone is shown in Figure 1.9 Standard
Zone/Detector Wiring. The recommended maximum cable run from a zone to a
detector is 500 metres. This recommendation is based on 7 × 0.2 mm multicore
cable.
Tamper switches should be closed in normal operation going open in the event
of a tamper condition.
Zone
Figure 1.9 Standard Zone/Detector Wiring.
Ω )
Ω )
Ω )
Ω )
Ω
)
e
R
e
s
s i
a t
n
c
e
(
7
2
0
-
1
3
0
0
1
-
1
2
5
0
0
α
0
1
-
Alarm
N/C
1k
1%
Zone Wiring
C
o
n
d
t i
o i
n
a T
m
p
r e
S
h
o
t r
i C
c r
t i u
N
r o
m
l a
C (
o l
s
e
) d
l A
r a
m
(
O
p
e
) n
a T
m
p
r e
O
p
e
n
i C
c r
t i u
Tamper
N/C
500 m
9
1k
1%
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