OccuSwitch DALI
User Guide
Page 23
3.2
Selecting the OccuSwitch DALI type
When the detection areas are known, you should define
which sensor to use for each area: an OccuSwitch DALI
Basic, OccuSwitch DALI Advanced, OccuSwitch DALI BMS,
or an extension sensor . This decision should be based on
the grouping of the detection areas, and the amount of
communication needed between these groups .
3 .2 .1
OccuSwitch DALI or extension sensor
First step is to select for each detection area between
using an OccuSwitch DALI or an extension sensor . To this
purpose you must define application areas, where all the
luminaires must be dimmed as a group . An application
area may contain one or more detection areas, but can
be controlled by one single OccuSwitch DALI . If the
application area contains more than one detection field,
the extra fields will be monitored by extension sensors
connected to the same OccuSwitch DALI . Take care
however that the total number of luminaires and extension
sensors per OccuSwitch DALI does not exceed the
maximum allowed load .
In the simplest case, a room is so small that it is totally
covered by one detection area . In this case there is only
one application area, which consists of only one detection
area . This application area needs one OccuSwitch DALI
without any extension sensors .
In a larger room, multiple detection or control areas are
needed . These detection areas must be grouped into
application areas:
• If the light levels all over the room must be controlled as
a whole, the detection areas in the room are grouped as
only one application area, which can be controlled by
one OccuSwitch DALI . The additional detection area is
covered by using an extension sensor .
• If the luminaires in the different detection areas may be
dimmed separately, each detection area can be defined
as an application area . For each application area, one
OccuSwitch DALI is used .
If communication between OccuSwitch DALI is used
(see next section), it is still possible and fairly easy to
make separate application areas work as one regarding
movement detection . Splitting an application area is much
harder, as it needs replacement of an extension sensor by
an OccuSwitch DALI, and a split in the DALI connection . It
is therefore recommended to carefully choose between an
extension sensor and an OccuSwitch DALI .
5.4m
3.6m
