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CP Electronics MWS3A-DD Manual

Ceiling microwave presence detector-dali/dsi
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MWS3A-DD
Ceiling microwave presence detector – DALI / DSI
Front features
Mounting Bezel
Back features
Retaining Spring
Power Input
& Switched
Output Connector
(Channel 1)
Retaining Spring
The MWS3A-DD microwave presence detector provides
automatic control of lighting loads with optional manual
control. The MWS3A-DD 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.
Output Channel 1 comprises a mains voltage relay capable
of simple on/off switching, while Output Channel 2 provides
dimmable control of either DALI or DSI type ballasts.
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, or to implement a maintained
illuminance (daylight harvesting) system.
The flexibility of having two channels and two switch inputs
allows the following example scenarios:
The MWS3A-DD has a unique adjustable sensor head that
allows the area of detection to be optimised for the
application.
All functionality is fully programmable using an IR handset.
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
Sensor Lens
which covers...
The LED flashes Red to indicate the following:
Microwave Sensor
Walk Test LED active
IR Receiver
Light Level Sensor
Valid setting received
Status LEDs
Power Input & Switched Output Connector (Channel 1)
Used to connect mains power to the unit and to connect a
switched load.
Dimmable Control Output Connector (Channel 2)
Used to connect DSI/DALI controllable ballasts and
Dimmable
transformers for dimmable loads.
Control Output
Connector
Switch Input Connector
(Channel 2)
Two input terminals can be used to manually override the
dimming levels and override the lights on or off.
Switch Input
Connector
Dim an outside row of luminaires whilst internal fittings
are switched
Provide absence detection for two separate channels
Maintained illuminance system with manual up/down
controls
Overview
Features
when movement is detected

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Summary of Contents for CP Electronics MWS3A-DD

  • Page 1 Provide absence detection for two separate channels  Maintained illuminance system with manual up/down controls The MWS3A-DD has a unique adjustable sensor head that allows the area of detection to be optimised for the application. All functionality is fully programmable using an IR handset.
  • Page 2 Detection diagrams Ideal for corridor or aisle applications Ideal for large office or classroom Note. If the range is compromised by the ceiling construction / material. Add the supplied 20mm spacer ring. See page 4 for fitting details. Ideal for open plan areas and offices...

  • Page 3: Sensor Functionality

    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 MWS3A-DD is able to dim the lamps using DALI/DSI, the product provides a facility to disable this for a given period of time.

  • Page 4: Installation

    Installation The MWS3A-DD 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.

  • Page 5: Wiring Diagrams

    Avoid metallic objects directly in front of the sensor head. Wiring diagrams Channel 1 (switched output) of the MWS3A-DD can either used to control the light output of luminaires that are fitted be used to switch a separate channel of standard, non- with dimming ballasts/transformers.
  • Page 6 Two channel, individual switches Functions: Switches both channels with occupancy. Maintains illuminance, dims and switches the dimming channel using optional single position retractive switch (switch 2). Switches the switching channel using the optional single position retractive switch (switch 1). Configured to presence detection: Turns on automatically with occupancy. Maintains illuminance (dimming channel only).

  • Page 7: Fault Finding

    Wiring diagrams (cont.) Single channel switching Functions: Switches channel 1 only with occupancy, optional override switch. No dimming output. Configured to presence detection: Turns on automatically with occupancy. Press and release down switch to turn off. Press and release up switch to turn back on. Turns off after occupancy. Configured to absence detection: Press and release up switch to turn on.

  • Page 8: Basic Programming

    Basic programming The functionality of the MWS3A-DD 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.

  • Page 9: Advanced Programming

    Advanced programming Parameter Name Default Value Range / Options Description UHS5 UNLCDHS Detector Parameters When set to On this causes a red LED to flash on the sensor when it detects Walk Test LED On or Off   movement. Use this feature to check for adequate sensitivity levels. Time Out 20 minutes 0-99 minutes...
  • Page 10 Advanced programming Parameter Name Default Value Range / Options Description UHS5 UNLCDHS Channel 1 –Switching Channel Detection Mode Presence Presence or Presence mode allows the output to turn on when movement is detected and off   when movement ceases. Absence mode allows the output to turn off when Absence movement ceases, but must be manually turned on first.
  • Page 11 This page intentionally left blank...

  • Page 12: Technical Data

    Technical data Dimensions See diagrams opposite MWS3A-DD Weight 0.15kg Supply Voltage 230VAC +/- 10% Frequency 50Hz Maximum Load Channel 1 (switching): 10A of lighting and/or ventilation including incandescent, fluorescent, compact fluorescent, low voltage (by switching the primary of transformer). Channel 2 (dimming):...