ABB i-bus KNX Product Manual page 121

®
ABB i-bus KNX
4.7.1.2 Deactivation of control
4.7.1.3 Activating constant
lighting control
4.7.1.4 Follow-up time of the
inactive control
© 2008 ABB STOTZ-KONTAKT GmbH
Planning and application
Constant lighting control can be deactivated by users at any time if this
option has been enabled. Corresponding parameterisation options can be
found in the parameter window
The deactivation of the light control can for example be implemented by a
local operation, dimming or switching of the lighting. Thus the user always
has the option of setting their optimum brightness .
Before light control runs (controls), the constant lighting control must be
selected on the parameter page
function. The light control is activated and controlled after the first download.
With a further download the light control state before the download is
restored. Light control can be activated (telegram with value 1) or
deactivated (telegram with value 0) via the object activate control.
In the activated state the light control is triggered as follows:
Constant lighting control is then activated and set to the control state when
the switched off lighting is switched on (via object Switch a telegram with
the value 1 is received).
The switch command can also be provided by a presence detector.
In this case it is possible to fully relinquish manual operation of the lighting
in extreme cases. This can prove to be useful if an optimum energy
consumption is to be achieved, or if you must ensure that when a certain
task is performed a particular level of brightness is assured.
In the following cases the light control which is in standby mode is not
triggered by an ON command:
•
The output is inhibited or is under forced operation.
•
The Follow-up time of the inactive control is active.
This function is particularly useful when there is a presence detector in
the room.
Example
The user has deactivated the light control and set the maximum level of
brightness. The user leaves the room and the presence detector switches
off the light. If the user returns after a short time (within the adjustable
follow-up time) the lighting is automatically set again to the maximum
brightness value and the light control remains active. The temporary
setpoint set by the user, e.g. by dimming, remains active.
X: Control Operating.
via the parameter Enable
X: General
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