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  Presence control
Documentation DALI MSensor 02 | 02-2012 | en
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Presence control
Description
Presence-based control makes it possible to link illuminance to the presence or absence of people. The light is switched on
as soon as a person enters a room. When the person leaves, the light is set to a predefined light value after a certain time
lapse. Presence-based control offers the benefits of saving energy as well as the convenience of automatic lighting control.
The device has different operating modes and profiles that can be adjusted in the masterCONFIGURATOR software (V2.02
or later).
Notice
The presence-based control of the DALI MSensor 02 reacts to moving thermal radiation from people. Other
heat sources (e.g. photocopiers, radiators, etc.) may have an adverse affect on presence-based control.
Make sure that there are no other heat sources in the immediate vicinity of the sensor.
Detection area of the motion sensor
The detection area of the motion sensor consists of a pattern of various measurement fields. The following conditions must
be met in order for an object to be detected reliably:
The object must move from one measurement field to another
The temperature of the object must be different from the background temperature
The diameter of the detection area depends on the detection angle of the sensor and the height at which it is mounted. The
mounting height also has an effect on the sensor's accuracy.
The position and mounting height produce two different detection areas:
in the centre of the detection area, the sensor operates as a presence detector, i.e. objects are detected merely by
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