CP Electronics VITM6-MWS6-DD User Manual

Product Guide

MWS6-DD

Ceiling microwave presence detector – DALI / DSI

Overview

The MWS6-DD microwave presence detector provides
automatic control of lighting loads with optional manual
control. The MWS6-DD 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.

Output Channel 1 comprises a mains voltage relay capable
of simple on/off switching, while Output Channel 2 provides
dimmable control of either DALI or DSI type ballasts.
Functioning as a presence detector, the unit can turn lights
on when a room is occupied and off when the room is
empty. Optional settings allow lights to be turned off in
response to ambient daylight, or to implement a maintained
illuminance (daylight harvesting) system.
The flexibility of having two channels and two switch inputs
allows the following example scenarios:

 Dim an outside row of luminaires whilst internal fittings

are switched

 Provide absence detection for two separate channels
 Maintained illuminance system with manual up/down

controls

All functionality is fully programmable using an IR handset.

Front features

Mounting Bezel

Back features

Retaining Spring

Power Input
& Switched
Output Connector

(Channel 1)

Sensor Lens

which covers...

Microwave Sensor

IR Receiver

Light Level Sensor

Status LEDs

Dimmable

Control Output

Connector

(Channel 2)

Features

Microwave Sensor

Detects movement within the unit’s detection range,

allowing load control in response to changes in occupancy.

IR Receiver

Receives control and programming commands from an
IR (infrared) handset.

Light Level Sensor

Measures the overall light level in the detection area

Status LEDs
The LED flashes Red to indicate the following:

Walk Test LED active

Valid setting received

Power Input & Switched Output Connector (Channel 1)
Used to connect mains power to the unit and to connect a
switched load.

Dimmable Control Output Connector (Channel 2)
Used to connect DSI/DALI controllable ballasts and
transformers for dimmable loads.

Switch Input Connector

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

when movement is detected

Retaining Spring

Switch Input

Connector

Detection diagram

Area of lower sensitivity Area of high sensitivity

Note. If the range is compromised by the ceiling construction /
material. Add the supplied 20mm spacer ring. See page 4 for
fitting details.

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Installation

Choosing a Suitable Location

The detector should be sited so that the occupants of the room fall inside the detection pattern shown opposite).

 Avoid positioning the unit where direct sunlight may enter the sensor element.

 Do not site the sensor within 1m of any lighting, forced air heating or ventilation.

 Do not fix the sensor to an unstable or vibrating surface.

 Avoid metallic objects directly in front of the sensor head.

Sensor functionality

Detection Mode

The Detection Mode for both output Channels 1 and 2 can be set to behave in Presence or Absence mode:
 Presence When movement is detected the load will automatically turn on. When the area is no longer occupied the

load will automatically switch off after an adjustable time period.

 Absence The load is manually switched on. When the area is no longer occupied the load will automatically switch

off after the adjustable time period has elapsed.

In either case, sensitivity to movement of the microwave sensor can be adjusted using the Sensitivity parameter.

HINT: To assist in setting the Sensitivity, turn on the Walk Test LED which will flash red when movement is detected.

Switch Level On/Off

Occupancy detection can be made dependant on the ambient light level using the Lux On Level and Lux Off Level
parameters.

Maintained Illuminance (daylight harvesting)

The detector measures the overall light level in the detection area and calculates the correct output for the luminaires, to
achieve a preset lux level (maintained illuminance or daylight harvesting).

Burn-in

Overview

It is a requirement of many fluorescent lamp manufacturers to have the lamps on at maximum output for a period of time
to guarantee lamp life (refer to the manufacturer’s datasheet for details) As this MWS6-DD is able to dim the lamps
using DALI/DSI, the product provides a facility to disable this for a given period of time.

Operation

By setting the “Burn in” parameter, you can select a time during which the lamps are not allowed to deviate from

maximum output. The unit counts the time, and even remembers how long has elapsed in the event of a power failure.
To cancel the burn in function, simply select a time of 0. Note that when the lamps are changed, the burn in time should
be set again.

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Installation

The MWS6-DD is designed to be mounted using either:

 Flush fixing, or

 Surface fixing, using the optional Surface Mounting Box (part no. DBB).

Both methods are illustrated below.

Flush Fixing

Warning - be careful
bending springs
when mounting unit.

Surface Fixing

1 2 4

Hole Ø64mm

If the range is compromised by
the ceiling construction /
material. Add the supplied
20mm spacer ring.

1

50mm or 60mm fixing centres

2

Pull out spring tab and rotate
spring arm as shown

3

3

5

4

Wire stripping details

Important

Ensure that the cables are formed as shown
before affixing the cable clamp. The clamp
MUST clamp the outer sheath(s) only.

Bend cores as shown.

Readback function (UNLCDHS handset only)

The UNLCDHS has the ability to read back the settings stored in a device.

To read back individual parameters

 Navigate to the parameter and press the ‘R’ (Read) button whilst pointing at the device. The handset will click

when the parameter has been read back, the device will flash its LED, and the value will be shown against the
parameter in the menu.

To read back all of the parameters in a menu

 Press and hold the ‘R’ (Read) button for more than 1 second.

 The handset will click every time a parameter is received

 The device will show multiple flashes of its LED

 All of the values will be shown against the parameters in the menu.

 The individual parameters may be edited and then saved as a ‘Macro’.

Notes

 If a parameter(s) has been missed because of a communication error, the missing value(s) is replaced by dashes.

 When reading back, the Channel 1 relay (where fitted) will temporarily be switched off, and will return to it’s normal

state 2 seconds after the read back has been completed.

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