CP Electronics MWS3 Données du produit et fiche d'installation

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PRODUCT DATA AND INSTALLATION SHEET

MWS3 M

-S

ULTI

ENSE

ICROWAVE

RESENCE

NSTALLATION

Warning. This device works at mains potential. Be sure to take care when working with

electricity.

Make sure the load is connected and in working order.

Isolate the mains supply to the circuit at the main consumer unit.

Connect the controller via the terminal block. Live supply to the L terminal,

Neutral to the N terminal and the load to the L/OUT terminal.

Swing the sensor head down using the finger slot to expose the settings.

Use a small screwdriver to set the LUX level adjuster fully clockwise, the time to

minimum (fully anticlockwise) and the sensitivity to maximum (fully clockwise)

using the diagram below.

Apply power—the load should come on immediately.

Vacate the room or remain very still and wait for the load to switch off (should

take no more than 2 minutes).

Check that the load switches on when movement is detected.

To set the LUX level wait until the level of natural daylight is just enough that

lighting is required. Starting with the LUX adjuster fully anti-clockwise. Very

slowly turn the adjuster clockwise until the lights come on. Note that when the

LUX adjuster is fully clockwise then the lights will always come on with occu-

pancy.

LUX setting can be done using the lux up and lux down

IR handset:

buttons.

Select the time out range using the adjuster, fully clockwise is the maximum.

10.

The area of detection can be varied by altering the angle of the sensor head

and the sensitivity adjuster. Note: on maximum sensitivity this unit is extremely

sensitive to movement and may detect through thin walls or partitions. If this

causes a problem reduce the sensitivity by turning the adjuster anticlockwise.

IR handset: the override on button turns the unit on permanently; the

11.

override off button turns the unit off permanently; the cancel button

cancels the overrides. When an override is selected an LED will flash

inside the unit.

ETECTOR

ESCRIPTION AND

PERATION

The MWS3 microwave presence detectors are designed to provide automatic

control of lighting, heating or ventilation loads. The MWS3 detects movement

using a highly sensitive microwave detector. This works by emitting low power

microwave signals and measuring the reflections as the signals bounce of

moving objects. The MWS3 has a unique adjustable sensor head that allows

the area of detection to be optimised for the application.

When movement is detected the load is turned on. When an area is no longer

occupied the load will switch off after an adjustable time out period.

An internal light sensor provides additional energy saving in lighting applica-

tions. When an area is occupied lighting is only switched on when the level of

natural light is below a preset level.

An integral IR sensor in the unit allows the lux settings to be changed and the

sensor to be overridden using a remote control handset (part no: UHS).

& F

IRING

IXING

Wire the products as in the diagram below.

To switch from more than one position simply wire two or more units in

parallel to achieve two way and intermediate switching.

The detector should be sited so that the occupants of the room fall inside

the detection pattern shown overleaf, at a recommended ceiling height of

2.8m.

Corridors or aisles: the unit should be placed at the end of the corridor or

aisle and the sensor head should be angled to look down the corridor or

aisle.

Open plan areas and offices: the unit can be mounted in a corner looking

outwards in which case the sensor head should be angled . Or the unit can

be mounted in the centre of the area with the sensor head flat.

Note that the higher the sensor is installed the shorter the detection range

will be.

•

Do not site within 1m of any lighting or ventilation equipment.

•

Do not fix to a vibrating surface.

•

Site as far away as possible from the surface of metal objects.

To flush mount:

•

Cut a 86mm hole in the ceiling

•

Insert the mounting clip into the hole and carefully push the two

fixings on the arms downwards until they grip firmly to the ceil-

ing

•

Unscrew the back plate, connect (see below) and re-fix the

back plate

•

Push the unit into the clip and setup as instructed below

To surface mount:

•

Unscrew the back plate and fix straight to the ceiling or to a

BESA box

•

Connect and re-fix the back plate

•

Setup as instructed below

Ref %WD136 Issue 1