ABB i-bus KNX Product Manual page 126

®
ABB i-bus KNX
© 2008 ABB STOTZ-KONTAKT GmbH
Planning and application
As an example, short operating instructions for output A are listed for
artificial lighting calibration:
Implementation
Artificial lighting calibration
1. Checking the Light
Sensor
1a. Check the Light Sensor
position.
1b. After checking the
Light Sensor.
2. Deactivate lighting
control
3. Slaves must be
actively integrated into
the lighting.
4. Dim room lighting.
5. Set the artificial lighting
so that the setpoint
brightness is set to the
reference point.
The Light Sensor
should be positioned
above the reference
surface.
6. Switch calibration
object to ready to
receive.
7. Initiate artificial lighting
calibration.
8. End artificial lighting
calibration.
1)
Before the artificial lighting calibration ensure that the luminaries feature a constantly reproducible dimming
performance during dimming. For this purpose the burn-in time
must be considered and already completed. Consider also that some fluorescent lamps only develop their
full lighting intensity after a few seconds.
2)
Interference of the artificial lighting calibration caused by daylight has the effect that the Light Controller
assumes that the illumination can produce a larger brightness level than is actually the case. The Light
Controller will set a lower level of brightness in control operation.
By
1)
Set T flag object Sensor
value (No. 32).
Partial download is
sufficient.
Observe the sensor value.
See
Positioning of the Light
Sensor
Reset the T flag object
Sensor value (No. 32).
Partial download is
sufficient.
Send 0 to object activate
control (No. 24).
Write the corresponding
Activate slave mode objects
with 1.
Blind or time of day.
Dimming via object Relative
dimming (No. 12).
Send a telegram with the
value 1 to object Enable
calibration (No. 25).
Send a telegram with the
value 1 to object Calibration
lighting (No. 26).
Automatic via LR/S.
(Effect of ageing on
Effect
The sensor value must
change with a change in
the brightness value.
Sensor value is not subject
to interference.
Reduction of the bus load
in normal operation.
Control is deactivated.
The entire lighting which is
effective in the control
must be active during
calibration.
Brightness in the detection
range of the Light Sensor
2)
less than 20 lx
Setpoint is set, e.g. 500 lx.
Luxmeter is positioned
vertically below the Light
Sensor.
Object Calibration lighting
and Calibration daylight
are ready to receive for 1
hour.
Control commences
calibration of artificial
lighting. Jump to 100 %
brightness. Dimming to 0.
The calibration is
completed after about 1
minute.
At the start of calibration
the value of the object
Enable calibration (25) is
reset to 0.
Control active and
controlling.
At the end of calibration
the object Calibration
lighting (26) is reset to 0.
lamps) of the luminaries
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