DSC LC-171 Manual
1
INSTALLATION INSTRUCTIONS
&
USER MANUAL
P/N: 7131691 ver.B
LC-171
Dual-Tech Motion Sensor
(Dual PIR & Microwave)withPet
Immunity
2
1 General .................................................................................................................................................... 3
2 Features................................................................................................................................................... 3
3 Assembly description............................................................................................................................. 4
4 Detection Pattern.................................................................................................................................... 5
5 Selecting mounting location.................................................................................................................. 6
6 Detector Installation ............................................................................................................................... 7
7 Terminal Block Connections................................................................................................................. 9
7.1 Wire Size Requirements..................................................................................................... 9
8 Settings & Adjustments ....................................................................................................................... 10
8.1 Detection beam direction.................................................................................................. 10
8.2 Detection range setting .................................................................................................... 10
8.3 Sensitivity, Range and Pet immunity Adjustment ............................................................. 11
8.4 Indications setting............................................................................................................. 13
9 Operation ............................................................................................................................................... 14
10 Test procedure...................................................................................................................................... 14
11 Specifications ........................................................................................................................................ 15
3
1 General
The LC-171 is unique motion detector utilizing four passive infra-red elements and
Microwave technology for use outdoors and in harsh environments.
The LC-171 is designed for outdoor use in the most severe climatic conditions and may also
accommodate pets.
High reliability is achieved by combining both dual tech hardware with highly sophisticated
software and an adaptive coverage area, greatly reducing the possibility of false alarms.
The active elements are comprised of a dual PIR and advanced Microwave detector inside a
stylish, rigid plastic body.
This special optics combined with state of the art microwave Doppler sensor assures elimination
of “false alarms” while maintaining high security standards for the detection of human intruders
into the protected area.
The detection sensitivity and range is controlled by a digital rotary switch allowing 16 calibration
levels, so that the correct detection pattern will be set for every installation.
The LC-171 is designed to protect large areas and can easily be installed on walls or poles in
order to provide a solid area of protection while rejecting interference from birds and small
animals due to the provided pet immunity optics.
2 Features
!Microwave detection based on Doppler concept.
!N.O. & N. C. Relays switched at the same time.
!Pet immunity up 35kg (77 lb.)
!16 levels of PIR sensitivity adjustment and 3 microwave sensitivity groups.
!Temperature compensation.
!Microcontroller signal processing.
!Front and back tamper protection.
!Audible indication of walk test and intruder detection.
!Unique waterproof sealed plastic design.
!Detection Range: Up to 18m (59ft.)
!Detect human intruders walking or running.
!No maintenance required.
!High RFI/EMI Immunity.
!Protection from: direct sunlight, wind up to 30 m/sec (98 ft/sec), snow and rain, small animals,
removal of the top cover and removal from mounting bracket
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4
3 Assembly description
The LC-171 is a robust detector which includes a large LED indicator that can be easily observed
from long distances and an optional buzzer to provide indication of intrusion.
Using the supplied mounting bracket, the LC-171 can be easily mounted to walls using mounting
screws and poles using the supplied metal bands.
The LC-171 is combined of three detection elements:
!Upper PIR element
!Lower PIR element
!Microwave element
!The upper PIR element has an adjustable detection height while the other two are fixed.
The following drawing shows all internal elements:
U
pp
er PIR element
Lower PIR element
Microwave element
LED
Terminal Connection Blocks
LED and Buzzer di
p
switches
Sensitivit
y
settin
g
Direction An
g
le Indicato
r
Ran
g
e settin
g
handle
Ran
g
e Indication
Tam
p
er switch
Bracket lockin
g
screw
5
4 Detection Pattern
The LC-171 has a 90° top view PIR and MW detection pattern with over 18m (59 ft.)
detection distance (when installed at 1.2m (4 ft.) above the ground surface).
The LC-171 has an internal rotating housing (which includes the 2 PIR elements and the MW)
that can be adjusted horizontally, so its 90° coverage may vary between 0° and 180°.
The LC-171 can differentiate between pets and human bodies and alert accordingly by
having microwave movement detection combined with two PIR detection beams:.
A. Lower PIR element which is fixed to 18m (59 ft.) range and 60cm (2 ft) above ground level
which helps avoiding pet detection over the entire area.
B. Upper PIR element which has adaptive range between 3 and 18m (10 and 59 ft).
An intrusion is defined by both PIR detection beams being crossed and a Microwave detection
occurring, causing an alarm.
No alarm will be generated if only one of the PIR detection beams is crossed and microwave
detection occurs.
Detection area
Lower PIR element detection pattern
Fixed to 18m range
Microwave detection pattern Detection No Detection
No pet detection in all
protected area
Upper PIR element detection pattern
Adjustable between 3m and 18m (10 ft to 59 ft)
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6
5 Selecting mounting location
The installation of the LC-171 requires a solid, level base for the mounting bracket and must be
located in a manner that when the detector is mounted, it is facing the center of the desired
detection zone.
It is recommended that the detector will face
a solid border limiting the detection area, such as the
building structure or fencing wall, to avoid undesired
detection range.
The protected area must be free from obstacles like walls,
fences, trees, ditches and other microwave detectors.
Choose a location most likely to intercept an intruder according to detection pattern on page 5.
Avoid the Following Installation Locations:
!Facing direct sunlight.
!Facing areas subject to rapid temperature changes.
!Mounted at more than 10º from the vertical or horizontal plane.
!Facing metal doors.
!Near direct sources of heat or airflow.
!Clear all physical obstacles from the detection area
(e.g. plants, laundry, etc.)
!Clear all light reflecting surfaces from the detection area,
including puddles or other standing water.
!Avoid installation on the following types of ground:
Thick vegetation, Grass (un-mown), Water, Sand and Metal.
NOTES:
!Recommended installation height is 1.2m (4ft).
!The DUAL (Four Elements) high quality sensor detects motion crossing the beam; it is less
sensitive detecting motion towards the detector.
!The LC-171 performs best when provided with a constant and stable environment.
!In order to ensure suitable operation of the LC-171 type of ground should be one of the
following: Asphalt concrete, Cement, Soil, Clay, Gravel or Grass (mown).
!Sensitivity adjustment may be required upon extreme temperature changes.
Extremely high temperature will reduce detection range.
Extremely low temperature will increase detection range.
Choose proper installation location to avoid resetting.
7
6 Detector Installation
Important! Prior to installation, read both “Operation” and “Selecting the mounting
location” sections carefully.
1. Install the detector in such manner that the intruder
is most likely to cross the detection area from side to
side.
2. The detector is to be installed at height of 0.8 to 1.5
meter (2.6 to 4.9 ft.), ideally 1.2m (4 ft.)
3. Make sure to attach the metal bracket to a leveled
straight and firm wall, leaving 15cm (5.9 inches) from
the top and 15cm from both sides, for easy installation
and maintenance.
4. Rotating the detection beam may be required for
guarding a side window opening while the detector is
installed facing another direction.
5. Open the detector unwinding the bottom screw. 6. Release the rear metal bracket by unwinding
internal bottom screw.
7. Release the detector body from the metal bracket
by pulling the detector out and up.
8. Attach the rear bracket to the wall or a pole using
mounting screws or metal bands.
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8
9. Break the relevant knockouts on the rear side of the
plastic base and slide the wires from the outside via the
paths and knockout to the internal side of the detector.
10. Attach the sealing “U” shaped Sponge Pad to the
wire opening from the rear side after the wires have
been connected and prior to final product affixing to
the mounted bracket.
11. Place the detector on the mounting bracket from top
side down and then lock the screw at the bottom.
12. Connect the wires to the terminal blocks
according to the following chapter.
9
7 Terminal Block Connections
Terminal 1 - Marked “-” (GND) - Connect to the ground of the Control Panel.
Terminal 2 - Marked “+” (+12V) - Connect to a positive Voltage of 9.6 -16Vdc source
(usually from the Control Panel)
Terminals 3 & 4 - Marked “TAMP” - If a Tamper function is required connect these
Terminals to a normally closed 24-Hour Tamper Zone on the Control Panel.
If the top cover of the detector is opened or the detector is detached from installation wall, an
immediate alarm signal will be sent to the Control Panel.
Terminal 5 - Marked “EOL” - End of line – optional terminal for end of line resistors
connections.
Terminals 6, 7 & 8 - Marked “NC / C / NO” - These are the output relay contacts of the
detector. Connect to a zone input on the control unit. When an intruder is detected, alarm
relays (N.C. and N.O.) will switch for 1.8 sec.
7.1 Wire Size Requirements
Use #22 AWG or larger wires. Use the following table to determine required wire gauge and
length.
Wire Length [m] 205 310 510 870
Wire Length [ft.] 800 1200 2000 3400
Wire Gauge [#] 22 20 18 16
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10
8 Settings & Adjustments
8.1 Detection beam direction
The LC-171 detection beam direction may vary between 0º and 180º.
In order to change the detection beam direction rotate the internal detection element
housing to the desired direction.
8.2 Detection range setting
The LC-171 detection range may vary between 3m (10 ft) and 18m (59 ft), while installed on
1.2m (4 ft.) height above the ground surface.
Changing the detection range is achieved by sliding the upper detection element up or
down.
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