CP Electronics VITP-MWS3A - Manual (Page 2)

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The VITP-MWS3A microwave presence detector switches are designed to provide automatic control
of lighting loads via the VitessePlus marshalling box. The VITP-MWS3A detects movement using a
highly sensitive microwave detector and turn the load on. When an area is no longer occupied the
load will switch off after an adjustable time out period. This microwave works by emitting low power
microwave signals and measuring the reflections as the signals bounce off moving objects. The
VITP-MWS3A has a unique adjustable sensor head that allows the area of detection to be optimised
for the application.
The detector also has an integral light sensor which can provide the following optional features:-
With VitessePlus dimming marshalling boxes, the unit can provide a maintained illuminance (or
daylight linking) feature. The internal light sensor measures the light level in an area and will
automatically adjust the output of the luminaries, via the marshalling box, to maintain a
constant, adjustable lux level. Please note that this function only works with VitessePlus
dimming marshalling boxes using either DALI, DSI or analogue (1-10V) dimming ballasts.
―Lux hold off‖ with non-dimming marshalling boxes, to prevent lighting coming on when a person
first enters the area if there is sufficient ambient light present (only available using the DD-
LCDHS programming handset - please see below).
―Lux switch off‖ with non-dimming marshalling boxes, to switch lighting off during occupancy if
the light level rises above a certain lux level in an area, which is sometimes required if ambient
light affects the area during certain times of the day (only available using the DD-LCDHS
programming handset - please see below).
When the unit is first powered up the microwave sensor will always detect immediately regardless of
whether the room is occupied or not.
An integral IR sensor in the unit allows the additional functions to be used in conjunction with
remote control handsets, there are several available:-
User Handset (Part No. UHS) the following functionality is available:-
Override the detector on or off (so lighting can stay on or off).
Act as a conventional dimmer - with dimming marshalling boxes only.
Change the maintained illuminance lux setting - with dimming marshalling boxes only.
User Handset 3 (Part No. UHS3) the following functionality is available:-
Override the detector on or off (so lighting can stay on or off) - no dimming override available.
User Handset 3/2 (Part No. UHS3/2) the following functionality is available:-
Override the detector off (so lighting can stay off) - no on override or dimming override available.
Programming Handset (Part No. DD-LCDHS) the following additional functionality is available for
commissioning purposes:-
Setting the time delay.
Sensitivity (range) adjustment.
Walk test LED - to check that the detector is picking up movement in the area.
Set the maintained illuminance lux setting on dimming marshalling boxes.
Set ―lux hold off‖ and ―lux switch off‖ levels on non-dimming marshalling boxes.
If remote control handsets are requested by the end user, it is usually recommended that the UHS
range or the UHS3 handset is supplied. The DD-LCDHS programming handset should only be used
by specifically trained personnel for commissioning purposes only.
2. Description & Operation
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9. Detection Patterns
Ideal for large office or classroom applications
Ideal for corridor or aisle applications
Ideal for open plan areas and offices