Vigilant MX1 - Addressable Loop Wiring

Installation Guide MX1 Fire Alarm System (NZ)
LT0360 ISSUE 2.43 29 NOVEMBER 2017 PAGE 6
Addressable Loop Wiring
Figure 6 shows the
general form of the
addressable loop wiring
from the MX1.
The screw terminals on
the controller board can
accommodate loop wire
of up to 4.0mm
2
in size.
Correct polarity must be
maintained around the
loop as most MX
devices are polarity
sensitive.
NZS 4512:2010
requires that short
circuit isolators (isolator
base, isolator module,
or in-built to
module/detector) be
located at zone
boundaries to restrict
the effect of short
circuits or overloads to a
single zone.
F
IR
E
D
E
F
N
C
2
C
2
N
O
2
MX1 CONTROLLER
N
C
2
C
2
N
O
2
AR-
BRIGADE SIGNALLING
INTERFACE
ASE+
0V
ASE
INTERFACE
Detector
DetectorDetector
Detector
Detector
Detector Detector
Module
Module
Detector
AR+
AL-
AL+
Figure 6 – Addressable Devices on MX Loop
Note that the 850P, 850PH, 850PC and 850H detectors have built-in short circuit isolators when fitted to 4B-C
bases.
Refer to the MX1 System Design Manual (LT0361) for detailed information on acceptable current loads and wire
sizes for the addressable loop wiring.
A range of brackets is available for mounting certain MX modules in the MX1 15U Cabinet – typically where the MX
Loop Cards mount. Refer to the relevant installation instructions LT0557 and LT0591 for details.