Metway CRBMWDD3 Product Manual

page 12

LOAD
Channel 1 (switching):

10A of lighting and or ventilation i ncluding incandescent, fluoresc ent, compact fluorescent, low volt age
(switch primary of transformer).

Channel 2 (dimming):

Maximum number of DSI or DA LI ballasts is 10 unless the relay is disabled then it is 20.

SUPPLY VOLTAGE 220-240 Volts AC 50 Hz
TIME OUT PERIOD Adjustable 10 seconds to 99 minutes
LIGHT LEVEL Light to dark
TERMINAL CAPACITY 2.5mm2
MATERIAL Flame retardant ABS
TYPE Class 2
TEMPERATURE -10°C to 35°C
SAFETY The microwave radiation emitt ed by these units is exteremely low power.

At a distance of > 50mm the p ower density is <6% of the ANSI IEEE C95.1 –1991
recommended microwave power d ensity.
At a distance of 5mm from the uni t it is <84% of recommend ed power density.

CONFORMITY EMC-89/336/EEC

LVD-73/23/EEC

13. Specification

Ref #WD417 Issue 1

IMPORTANT NOTICE!

This device should be installed by a qualified electrician in
accordance with the latest edition of the IEE wiring regulations.

Due to our policy of c ontinual product improvement Metway Electrical Industries
reserves the right to alter the specification of this product without prior notice.

Metway Electrical Industries Limited
Barrie House
18 North Street
Portslade
East Sussex
BN41 1DG
Tel: + 44 1273 439266
Fax: + 44 1273 439288
www.metway.co.uk
[e-mail]

page

1. Dimensions

Section Contents Page

1 Dimensional information 1
2 Description and operation 2
3 Wiring & Fixing 3
4 Installation 3
5 Fixing - Flush 4
6 Fixing - Surface 4
7 Head locking 5
8 Time, Lux & Sensitivity adjusters 5

9 Programming 6
10 Wiring diagrams 8
11 Detection pattern diagrams 11
12 Fault finding 12
13 Specification 12
14 Part numbers 12

Contents

Direct Dim Microwave Presence/Absence Detector

Product Guide

CRBMWDD3

page 2

The CRBMWDD3 microwave pres ence detector provides automatic control of lighting loads with opti onal
manual control. It can be us ed on incandescent, fluorescent and c ompact fluorescent lighting and DSI or
DALI digital dimming ballasts over 1 or 2 channels. The CRBMW DD3 detects movement using a highly
sensitive microwave detector. This works by emitting low power microwave signals and measuring the
reflections as the signals bounce off moving objects. The CRBMW DD3 has a unique adjustable sens or
head that allows the area of detection to be optimised for the applic ation.

The dimming channel of the det ector can be used to control the lig ht output of luminaires that are fitted
with dimming ballasts. The detect or measures the overall light level in the detection area and c alculates
the correct output for the luminaires, to achieve a preset lux level (m aintained illuminance).
The switching channel of the det ector can either be used to isolate the supply to the dimming ballasts
(saving on the standby current of the ballasts) or to switch a sep arate channel of standard, non -dimming
luminaires.

Two input terminals can be us ed to manually override the dimming levels and override the lights on or off.

The flexibility of having two ch annels and two switch inputs allows the following example scenarios:

1. Dim an outsid e row of luminaires whilst internal fittings are switched

2. Provide absence detection (see below) for two s eparate channels

3. Maintained illu minance system with manual up/d own controls

An integral infra-red sens or in the unit allows the unit to be pr ogrammed using the optional CRPHS
programming handset. This gi ves complete flexibility over many of the operating parameters. W ithout the
handset, manual adjustments c an be made to the sensitivity, lux and time settings using controls
accessible behind the lens.

The UHS user handset can be used to change output lux levels and override the lights on or off.

Two standard units are available:

CRBMWDD3 - presence detection:
When movement is detected the load will automatically turn on. W hen the area is no longer occupied the
load will automatically switch off after an adjustable time period.

CRBMWDD3/ABS - absenc e detection:

The load is manually switch ed on. When the area is no longer occupied the load will automatic ally switch
off after the adjustable time peri od has elapsed. Note that the CRB MWDD3 can be programm ed to
absence detection using the programming handset.

In most applications the CRBMWDD3 can be used with simple manual adjustment. However, th e
CRBMWDD3 unit has a compr ehensive set of features that c an be set using the CRPHS hands et.
Alternatively the units can b e commissioned as follows:

On-site commissioning service - please contact our sales departmen t for details.

Pre-commissioning service - t he units will be despatched t o site with the correct features set. Th e
part number will read CRBMW DD3/PRG followed by the proj ect reference number. Please contact
our sales department for details.

2. Description and Operation

page 11

11. Detection Patterns

Ideal for large office or classroom

Ideal for corridor or aisle applications

Ideal for open plan areas and offices

LOAD DOES NOT COME ON

Check to see if the live supply to the circuit is
good. Strap across the L and LIVE OUT terminal
to turn the load on.

If the supply and wiring are good, ch eck the LUX
level setting. Increase the LU X level setting to
allow the controller to turn on at higher ambient
natural light level.

LIGHTS DO NOT GO OFF

Ensure that the area is left unoccupied for a
greater time period than the time out period set
using the switch.

Make sure that the sensor is not adjacent to
vibrating surfaces or objects (e.g. ventilation
equipment).

The unit may pick up movement th rough thin
partitions or walls. Reduce the sensitivity by
turning the adjuster anticlockwis e.

12. Fault Finding