ABB i-bus KNX Product Manual page 68

®
ABB i-bus KNX
© 2008 ABB STOTZ-KONTAKT GmbH
Commissioning
The control limits are independent of the dim and value limits which are
parameterised in the parameter windows
Note
All luminaries have a minimum dimming value to which you can dim down
based on its physical properties.
If this limit is undershot, either the brightness will remain constant – e.g.
with fluorescent tubes in conjunction with ballasts – or the luminaries will
switch off, e.g. incandescent bulbs. As it is a physical property of the
luminaries, sometimes when in combination with a ballast, it is not
possible that this minimum dimming limit can be reduced further by a
smaller value set in the parameterisation. Furthermore, some luminaries
will no longer light with constant brightness underneath 10 %. For this
reason with a brightness value less than or equal to 10 %, the message
Attention: illuminant charact. is displayed.
If a lower control limit ≤ 10 is set, the following parameter appears:
Allow switching on/off during lighting control
Options: no, illumination is always on
switching on only via going up
switching on and off via going up/down
These parameters define if switch off or switch off and switch on of
the lighting during light control is allowed by the Light Controller.
•
no, illumination is always on: The lighting is not switched on or off
independently by the light control.
Switching on is implemented by an ON command via the Switch
object. This can be undertaken by a pushbutton or automatically
by a presence detector.
In this way a problematic or extended period of lighting up the
luminaries can be avoided.
This is the case particularly when ignition takes a few seconds.
This causes interference and damages the service life of the
luminaries.
•
switching on only via going up: The Light Controller switches off
the light, however the lighting must be implemented manually via
an ON command.
•
switching on and off via going up/down: In this way it is possible
to parameterise switch off dependent on the setpoint deviation.
In this way continuous switch on and switch off is avoided.
This causes interference and damages the luminaries.
The following parameter appears:
and
X: Dimming X: Value.
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