DSC LC-171 Manual

INSTALLATION INSTRUCTIONS

USER MANUAL

P/N: 7131691 ver.B

LC-171

Dual-Tech Motion Sensor

(Dual PIR & Microwave)withPet

Immunity

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

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

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:

er PIR element

Lower PIR element

Microwave element

LED

Terminal Connection Blocks

LED and Buzzer di

switches

Sensitivit

settin

Direction An

le Indicato

Ran

e settin

handle

Ran

e Indication

Tam

er switch

Bracket lockin

screw

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)

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.

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.

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.

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

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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