Follow-Up Time Of The Inactive Light Control; Commissioning/Calibration Of The Constant Lighting Control - ABB i-bus KNX Product Manual

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ABB i-bus KNX
Planning and application
4.9.4

Follow-up time of the inactive light control

This function is particularly useful, when there is a presence detector in the room.
Example
The user has deactivated the light controller 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 dimming value and
the light controller remains active. The temporary setpoint set by the user, e.g. by dimming, remains
active.
A more detailed explanation can be found under the parameter Follow-up time of the inactive control
in s [0...65,535] in the
4.9.5

Commissioning/calibration of the constant lighting control

Commissioning of the constant lighting control should be undertaken when the intended furnishings are in
place. The technical lighting attributes of the room are influenced by the furniture and the floor coverings,
e.g. reflection and absorption. This on the other hand has a direct effect on the brightness value, which is
detected by the light sensor.
If constant light control is set in a room that does not yet have its final configuration and changes are then
made to the layout in the room, this will have a direct effect on the light control. In the simplest case, this
can lead to larger setpoint overshoots or undershoots. In extreme cases, it can lead to unstable oscillating
light control.
With a calibration of the constant lighting control, all lamps controlled directly (master) or indirectly (slave)
by the DALI Light Controller are to be included in the calibration.
Important
The sequence of daylight and artificial light calibration is not random. Calibration with artificial light must
be performed before calibration with daylight.
Before the calibration process, it is recommended that the function of the Light Sensor is checked. The bit
combination of the communication object Status Sensors (no. 9) displays whether brightness is detected
on the sensor input. If this is not the case, the sensor cable may have the poles reversed, be open circuit
or the room may be in absolute darkness. After verifying the function of the Light Sensors relevant to the
light controller, the required light controller should be deactivated. This can be performed, for example, by
a telegram with the value 0 to the communication object Function Activate controller. The light can now be
dimmed independently of the parameterization of the light controller, any brightness can be set and the
calibration of the constant light control can commence.
Parameter window - Gx Control Operating, page 107.
DLR/S 8.16.1M | 2CDC 507 100 D0202 177