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.
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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.
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.
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Installation
The VITMR-MWS3A-PRM 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.
Flush fixing
1 3
Hole Ø74mm
2
If the range is compromised by the
ceiling construction / material. Add the
supplied 20mm spacer ring.
Surface fixing
1 2 3
Hole Ø30mm
MAX
4
Head locking
1 2
Remove metal
locking clip from
rear of unit.
4
Adjust head to
required position.
Push clip into position
shown below to lock
head.
To remove clip, lever
out with a small
screwdriver.
Basic programming
The functionality of the VITMR-MWS3A-PRM is controlled by a number of parameters which
can be changed or programmed by any of the following devices:
UHS5 Infrared Handset. See below for programmable functions.
UNLCDHS Infrared Handset (with LCD). See user guide for full programming details.
For most basic programming operations the UHS5 handset can be used and the following procedures
are based on using this device.
Point the handset at the Sensor and send the required programming commands to the unit as shown
below.
Valid commands will be indicated by a red LED flash. See page 1 for details of other LED responses.
Note: other functions on the UHS5 which are not shown below are not applicable to this product.
Number of Shift key presses
Parameter
Name
Default
Value
0 1 2 3 UHS5 Handset Graphics Description
SHIFT 1 SHIFT 2 SHIFT 1 SHIFT 2 SHIFT 1 SHIFT 2 SHIFT 1 SHIFT 2
Button Activation
On On
Off Off
Walk test Off On Off
Time Out
(Time
adjustment)
Lux on
level
(Switch
level on)
Lux off
level
(Switch
level off)
Sensitivity 9 1, 5 & 9 3, 6 & 8
Defaults D
20 mins 1, 10 &
20
minutes
9 2, 5 & 7 4, 6 & 9
9 2, 5 & 7 4, 6 & 9
5, 15 &
30
minutes
10
seconds
Turn lights on.
Turn lights off.
When set to On this causes a red LED to flash on
the sensor when it detects movement. Use this
feature to check for adequate sensitivity levels.
Once the detector is turned on, this value sets
how long the lights will stay on once movement
has ceased.
Lux level setting to prevent the luminaires being
switched on if the ambient light level is sufficient
(adjustable between 1 and 9). The luminaires will
always be switched on at level 9.
Lux level setting to switch the luminaires off during
occupancy if the ambient light level goes above
the setting (adjustable between 1 and 9). Level 9
will always keep the lights on. This setting can be
used for “window row switching”.
Note: the Lux Off Level value must always be
greater than the Lux On Level value.
Sensitivity level for detecting movement.
1 = low sensitivity
9 = high sensitivity
Returns the unit to the default settings.
Shift
Use this button to select the settings in red and
blue signified by the ‘Shift 1’ and ‘Shift 2’ LEDs
Fault finding
What if the load does not turn ON?
Check that the live supply to the circuit is good.
Check that the load is functioning by bypassing the sensor (e.g. link terminals L and L/ Out on Channel1).
If the detection range is smaller than expected, check the diagram on page 2. Rotating the sensor slightly may
improve the detection range. If still reduced it may be compromised by the ceiling construction / material. Add the
supplied 20mm spacer ring. See page 4 for fitting details.
HINT: The Walk Test LED function can be used to check that the unit is detecting movement in the required area.
What if the load does not turn OFF?
Ensure that the area is left unoccupied for longer than the Time Out Period.
Ensure that the sensor is not adjacent to circulating air, heaters or lamps.
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Advanced programming
Parameter Name Default Value Range / Options Description
Detector Parameters
Walk Test LED Off On or Off
Time Out
(Time adjustment)
Manual Time Out 10 minutes 0-99 minutes
Sensitivity On 9 1 (min) to 9 (max)
Sensitivity Off 9 1 (min) to 9 (max)
Lux time 0 0 (disabled)
Power Up State On On or Off
Disable Detector N Y or N
Inhibit 4 seconds 1 to 999 seconds
Factory default
20 minutes 0-99 minutes
1-99 minutes
-
-
When set to On this causes a red LED to flash on the sensor when it detects
movement. Use this feature to check for adequate sensitivity levels.
Once the detector is turned on, this value sets how long the lights will stay on once
movement has ceased. Select 0 for 10 second delay – use for commissioning only.
When a manual operation occurs, either via the switch input or the infrared, it
invokes the timeout period.
Example 1: a detector in presence mode has a detector timeout of 15 minutes and
a manual timeout of 3 minutes. W hen the user leaves the room they press the off
button. The sensor will revert to automatic after 3 minutes, and then walking back
in the room will turn the lights on.
Example 2: using the settings above, the user turns the lights off (say for a
presentation) but stays in the room. Every time a movement is detected, the
manual timeout period is re-triggered, but when it doesn’t pick up for the short
timeout period, the sensor will timeout and revert to automatic. This means the
lights may turn on inadvertently during the presentation, if the occupants are still
for the manual timeout period, so adjust the timing carefully.
Sensitivity level for detecting movement when the detector is already on. *UHS5
sets Sensitivity On and Off to the same value.
Sensitivity level for detecting movement when the detector is off. *UHS5 sets
Sensitivity On and Off to the same value.
If the detector measures the lux level and decides that the output needs switching
on or off as a consequence, the lux time must elapse first. If at any time during the
timed delay the lux change reverses then the process is cancelled.
Select No for a 30 second delay on start up. If Yes is selected, there will be no
delay on start up and the detector will always power up detecting.
Disables detection, leaving the relay output permanently off with the dimming
output operational. This mode is used when the unit is for maintained illuminance
only.
When the detector turns off, a delay is instigated to prevent retriggering. In certain
circumstances this delay may not be enough. T his parameter allows the delay to
be changed.
Restores factory default settings
UHS5 UNLCDHS
*
*
Switching functions
Lux on level
(Switch level on)
Lux off level
(Switch level off)
User Modes
Override On
Override Off
Cancel
9 1 to 9
For a higher
resolution a scale
of 101-199 is
available
9 1 to 9
For a higher
resolution a scale
of 101-199 is
available
- -
- -
- -
Sets a minimum light level below which the Microwave sensor is enabled, allowing
lights to be turned on by movement.
Note: the Lux Level Off value must always be greater than the Lux Level On value.
Sets a maximum light level above which the Microwave sensor is disabled,
preventing lights from being turned on by movement.
If the lights are off, sending the IR command will turn them on immediately and
revert to automatic operation using the manual timeout period .
If the lights are on, sending the IR command will turn them off immediately. After
the manual timeout period (described above), the sensor will revert to automatic.
Cancels the on or off override, returning the detector to normal operation.
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Technical data
Dimensions See diagrams opposite
Weight 0.50kg
Supply Voltage 230VAC +/- 10%
Frequency 50Hz
Maximum Load 10A of lighting and/or ventilation
including incandescent, fluorescent,
compact fluorescent, low voltage (by
switching the primary of transformer).
Power consumption On 1500mW, Off 910mW
Temperature -10ºC to 50ºC
Humidity 5 to 95% non-condensing
Material (casing) Flame retardant ABS and PC/ABS
Type Class 2
Safety The microwave radiation emitted
by these units is extremely low
power and complies with ANSI
standard “IEEEC95.1-1999
Standard for Safety Levels with
Respect to Human Exposure to
Radio Frequency Electromagnetic
Fields 3kHz 300GHz.”
IP rating IP40
Compliance EMC-2004/108/EC
LVD-2006/95/EC
VITMR-MWS3A-PRM
MWS3A-DBB
Part numbers
Part number Description
Detector
Accessories
IMPORTANT NOTICE!
This device should be installed by a qualified electrician in
accordance with the latest edition of the IEE Wiring
Regulations and any applicable Building Regulations.
Due to our policy of continual product improvement CP Electronics reserves the right to alter the specification of this product without prior notice.
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VITMR-MWS3A-PRM Microwave Presence/Absence Detector IR with Ceiling Rose
MWS3A-DBB Surface mounting box
UHS5 Programming IR handset
UNLCDHS Universal LCD IR handset
C.P. Electronics Ltd
Brent Crescent
London
NW10 7XR
United Kingdom
Tel: + 44 (0) 333 900 0671
Fax: + 44 (0) 333 900 0674
www.cpelectronics.co.uk
enquiry@cpelectronics.co.uk
Ref: #WD620 Issue 3
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