Wiring Diagrams - CP Electronics MWS3A-DD Manual

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.
Channel 1 (switched output) of the MWS3A-DD can either
be used to switch a separate channel of standard, non-
dimming luminaires, or to isolate the mains supply to
dimming ballasts (saving on the standby current of the
ballasts).
Multiple luminaires may be connected in parallel to
Channel 1 (via the N and L/Out terminals) as long as the
maximum total load is not exceeded.
Channel 2 (dimmable output) of the MWS3A-DD can be
Single channel dimming
Functions: Switches the luminaire with occupancy and maintains illuminance. Dims and switches using optional centre
biased retractive switch (MK K4900 or similar).
Configured to presence detection: Turns on automatically with occupancy. Maintains illuminance. Press and release
down switch to turn off. Press and release up switch to turn back on. Press and hold up switch to dim up, press and hold
down switch to dim down. Turns off after occupancy.
Configured to absence detection: Press and release up switch to turn on. Maintains illuminance. Press and release
down switch to turn off. Press and hold up switch to dim up, press and hold down switch to dim down. Turns off after
occupancy.
Channel mode: Set to "Switch and dim together".
Switch mode: Set to "2 position switch together".
NEUTRAL
LIVE
CIRCUIT PROTECTION
(IF REQUIRED)
used to control the light output of luminaires that are fitted
with dimming ballasts/transformers.
The ballasts/transformers can be connected in parallel to
Channel 2 (via the DIM– and DIM+ terminals). Refer to the
specification on page 12 for ballast quantities.
The wiring examples below show common methods of
connecting the output channels for a single detector unit.
N
DIM-
L/OUT
DIM+
L
SW1/UP
SW2
DOWN
EBDSPIR-DD SENSOR
Installation

Wiring diagrams

DIMMING
BALLAST
DIMMING LUMINAIRE
(DSI or DALI)
CENTRE BIASED
RETRACTIVE SWITCH
(240V SWITCHING)
Optional for presence,
mandatory for absence detection
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