PACKAGE CONTENTS
•
1 x MX20 HT
•
2 x Shutters
•
3 x 27mm wall plugs
•
3 x 27mm screws
•
3 x Tamper Feet
•
1 x Tamper Cup
•
1 x Installation manual
•
1 x Opening Tool
•
1 x Lens Mask
INTRODUCTION
The MX20 is an attractively styled, 20 metre Passive
Infrared (PIR) detector, with advanced features such as
dual tamper switches for case and wall-mount tamper
detection, sensor mounted white-light filter and zone
blanking using vertical curtain shutters and horizontal
masking for precise area coverage.
QUICK INSTALLATION
1.
Mount and connect the detector following the
instructions given later in this manual.
2.
Configure programming switches as required
referring to instructions given later in this manual.
3.
Apply supply voltage to the unit. The detection LED
flashes once.
4.
Wait approximately 2 to 3 minutes to allow the
detector to settle
NOTE: The front cover must be fitted when walk testing.
The default settings are:
•
Range: 20 metres
•
Pulse Count: 1
•
Detection LED: On (recommend for set up process)
MOUNTING THE UNIT
During the installation, protect the electronics against
water, as trapped moisture can affect or damage the unit.
1.
Drill the wall to accept the two fixing screws, the
cable entry and the tamper cup (if used)
Note: We recommend using the tamper cup on uneven
wall surfaces.
2.
Remove the cover assembly by loosening the locking
screw and using the opening tool provided. The cover
hinges from the top and lifts out of the location slot.
3.
Feed the cables into the cable entry and Screw
the unit to the wall ensuring that the tamper pin is
correctly located and that the tamper microswitch is
closed.
Three spare tamper feet of different lengths are provided
to aid installation, The tamper foot is a push fit and can be
removed by carefully pulling it from the pin.
4.
Connect the cables to the screw-terminal block on
the back of the detectors PCB ( see figure 1)
5.
When the detector is aligned, connected and
programmed to suit the installation, replace the front
cover and lock in place.
MULTI BEAM ALIGNMENT & MASKING
The multifunction lens fitted to MX20 produces 5 long
range beams and 5 medium to short range curtain PIR
beams (see Figure 2). The PIR circuitry detects changes
in heat and movement in the beam pattern; therefore items
such as trees, shrubs, ponds, boiler flues and animals
should be considered when positioning the detector.
NOTE: The PIR sensor is more sensitive to movement
across the beams and less sensitive to movement
directly towards or away from the beams.
The detector module is fitted with two sliding shutters to
reduce the detection angle.
When coverage exceeds the desired detection area, adjust
the module as required and mask off any beams, either
vertically or horizontally, to avoid unwanted detection
Use portions of the self-adhesive silver mask applied to the
rear, smooth side of the lens as shown in Figure 2. Always
replace the lens the correct way up to ensure exact beam
pattern coverage.
When mounted at heights above 3 metres there could be a
significant reduction in the range of detection and the target
will have to move a greater distance within the field of view
before an alarm is generated.
Masking Configurations for Maximum Range
Configuration
Mounting
Height
(Metres)
Tilt (°)
Max.
Range
(Metres)
Reference
Multibeam
(Optimum)
3
10
20
Figure 4
Pet Immunity*
1.5
5
20
Figure 3&5
(see figure 5)
Black area should be masked for pet alley applications up to 20
metres
Figure 6 shows the pattern for the maximum range in the
optimum position (see Figure 4).
Figures 7 and 8 illustrates alignment recommendations for
when the detector is mounted close to a wall.
MX20 HT
GJD104 Quad PIR High Temperature Detector
Detect
.
Illuminate
.
Deter
