ABB i-bus KNX Product Manual page 33

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ABB i-bus KNX
© 2008 ABB STOTZ-KONTAKT GmbH
Commissioning
Actual value (Control input)
Options: lower sensor value
average sensor value
upper sensor value
If the output is assigned with several Light Sensors, the actual value for the
constant lighting control is determined with this parameter. The lowest,
the largest or the average value of the detected sensor values can be used
for lighting control. If only a single Light Sensor is assigned to an output,
the current sensor value is used as the actual value irrespective of the
setting.
•
lower sensor value: The Light Controller uses the lowest sensor value
of the assigned Light Sensors as its actual value for constant lighting
control. All Light Sensors are considered which are assigned to the
output (control circuit). With this setting the room is lit up most brightly
by constant lighting control. The setpoint should not be undershot in
normal, malfunction free operation, e.g. no reflections or no direct
incidence of light on the Light Sensor.
•
average sensor value: The Light Controller uses the linear average
value of the assigned Light Sensors as its actual value for constant
lighting control.
•
upper sensor value: The Light Controller uses the highest sensor
value of the assigned Light Sensors as its actual value for constant
lighting control. This setting ensures that constant lighting control
requires the least possible level of artificial lighting. This achieves the
largest possible conservation of energy. However, the brightness at
many locations in the room is very likely below the target brightness
level.
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