CP Electronics VITP-MWS3A User Manual

Product Guide

VITP-MW3A

VitessePlus microwave presence detector

The VITP-MW3A microwave presence detector provides
automatic control of lighting loads via the VitessePlus
marshalling box.

The VITP-MW3A 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.

Functioning as a presence detector, the unit can turn lights
on when a room is occupied and off when the room is
empty. When used with a non-dimming LCM settings allow
lights to be turned off in response to ambient daylight. If a
dimming LCM is used the detector can be set-up to
implement a maintained illuminance (constant light)
system.

The VITP-MW3A has a unique adjustable sensor head that
allows the area of detection to be optimised for the
application.

Overview

Front features

Mounting Bezel

Back features

Retaining Spring

Sensor Lens

which covers...

Microwave Sensor

IR Receiver

Light Level Sensor

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

RJ45 Connections

Two RJ45 connections for CAT5 patch leads.

when movement is detected

Two VitessePlus
RJ45 Connections

Retaining Spring

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 3 for
fitting details.

Sensor functionality

When movement is detected the detector sends a signal to the VitessePlus marshalling box (LCM). The LCM is
programmed to either, turn on the load (Presence) or the load is manuallly turned on via a switch (Absence). When the
area is no longer occupied the load will automatically switch off after an adjustable time period.

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 (with non-dimming LCMs only)

Occupancy detection can be made dependant on the ambient light level using the Lux On Level and Lux Off Level
parameters. See page 7 for programming details.

Maintained Illuminance (with dimming LCMs only)

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).

Burn-in (with dimming LCMs only)

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 VITP-MW3A is able to dim the lamps via
the VitessePlus LCM (lighting control module), 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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Choosing a Suitable Location

The VITP-MW3A is designed to be ceiling mounted and must satisfy the following criteria:

 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.

The VITP-MW3A is designed to be mounted using either:

 Flush fixing, or

 Surface fixing, using the optional Surface Mounting Box (part no. MWS3A-DBB).

Both methods are illustrated below.

Warning - be careful bending springs when mounting unit.

2 x VitessePlus RJ45 Connections

Flush fixing

Installation

for Cat 5 patch leads

1 5 4 3

Hole Ø74mm Attach cable clamp

2

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

Surface fixing

1 3 2 4

Hole Ø30mm

MAX

Head locking

1 2

Remove metal
locking clip from
rear of unit.

 Adjust head to

required position.

 Push clip into position

shown below to lock
head.

 To remove clip, lever

out with a small
screwdriver.

3