CP Electronics VITMR-MWS3A-PRM User Manual

Product Guide

VITMR-MWS3A-PRM

Microwave Presence/Absence Detector IR & Ceiling Rose

Overview

The VITMR-MWS3A-PRM Microwave presence detector
provides automatic control of lighting loads. This sensor is
supplied pre-wired with a 3m lead and include a ceiling
rose for ease of installation.

The VITMR-MWS3A-PRM 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 output channel comprises a mains voltage relay
capable of simple on/off switching.

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.

The VITMR-MWS3A-PRM has a unique adjustable sensor
head that allows the area of detection to be optimised for
the application.

Front features

Front features

Mounting Bezel

Mounting Bezel

Sensor Lens

Sensor Lens

which covers...

which covers...

Microwave Sensor

Microwave Sensor

IR Receiver

IR Receiver

Light Level Sensor

Light Level Sensor

Status LEDs

Status LEDs

All functionality is fully programmable using an IR handset.

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

when movement is detected

Detection diagrams

Ideal for large office or classroom

Ideal for open plan areas and offices

Ideal for corridor or aisle applications

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

Sensor functionality

Presence detection

 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.

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.

2

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.

Ceiling rose wiring

CIRCUIT PROTECTION

Live

(IF REQUIRED)

Live supply

LUMINAIRE

Earth

Neutral

Permanent
Live

Each pole has two screw terminals.

Each terminal accepts 1 x 2.5mm2

Internal detector wiring

Screw fixings to
conduit box

VITM-ROSE

Where absence detection or override is required, wire the switch directly to the detector or use the VITM4 series of marshalling boxes

Power-up test procedure

When power is applied to the unit, the load will turn on immediately.

Set the timeout to 10 seconds, vacate the room or remain very still and wait for the load to switch off .

Check that the load switches on when movement is detected.

The unit is now ready for programming.

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.

3