PD00D01KNX
– Product Handbook
Eelectron Spa
Via Claudio Monteverdi 6, I-20025 Legnano (MI), Italia
Tel +39 0331.500802 - Fax +39 0331.564826
[email protected] www.eelectron.com
C.F. e P.IVA 11666760159 - Capitale sociale: 800.000,00 interamente versato
Tribunale di Milano 359157-8760-07 - CCIAA Milano 1486549
PD00D01KNXFI00030103.DOCX
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Integrated constant light level control (dimming)
The luminance of the day light falling through a window into a room decreases in the room with the
distance from the window.
Depending on lamp type, the lighting is controlled to
the preset brightness value via dimming actuators or
switching/dimming actuators. The brightness setpoint
may be configured via a parameter or set via a
communication object.
For optimum use of the day light penetrating the room
the presence detector with constant light level control
offers the option to control a main lighting group
directly and up to four additional lighting control groups
each via their own characteristic curve and their own
controller (master/slave operation).
All lighting groups are dimmed to the same set point value. This allows controlling the light level in
a room with only one presence detector with constant light level control. Depending on the relative
distance of the additional lighting groups to the window compared to the main lighting group, each
of these additional lighting groups has to be dimmed brighter or darker than the main lighting
group.
Firstly, this requires determining the installation position
of the presence detector. The presence detector can be
installed on the ceiling at any of the positions A
–E. The
position of the presence detector determining the main
lighting group is in principle freely selectable. Yet, it
should be close to the window allowing the best
measurement of the daylight contribution.
For master/slave operation the day light curve under
lighting groups A
– E has to be captured. For this
purpose the artificial lighting has to be completely turned
off, such that just the natural day light is illuminating the
room. Ideally, the day light is evenly falling into the room
(no sharp shade / sunlight edges), bright, and diffused,
e.g. at noon on a bright day with overcast sky. Under each lighting group the luminance (Lux) has
to be measured manually and these values have to be entered into ETS.
Fig. 5 Position of lighting groups A-E
Fig. 4 Principal of constant light level control with
five luminaries