Product And Functional Overview - ABB i-bus KNX Product Manual

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ABB i-bus KNX
1.1 Product and functional
overview
LR/S 4.16.1
LR/S 2.16.1
LF/U/ 2.1
© 2008 ABB STOTZ-KONTAKT GmbH
General
Both Light Controllers LR/S 2.16.1 and LR/S 4.16.1 are modular installation
devices in ProM Design. They control dimmable electronic ballasts or
transformers with 1-10 V interface via 2 or 4 outputs. For every output a
floating 16 A switching contact for switch on and off of the ballasts is
available.
The outputs can be programmed independently of one another. Functions,
e.g. dimming, switching, scene recalls, light control, staircase lighting and
slave operation are available individually for each output.
Four (LR/S 4.16.1) or two (LR/S 2.16.1) Light Sensors LF/U 2.1 can be
connected to the Light Controller. The Light Sensor LF/U 2.1 is specially
matched to the Light Controller. Depending of the predefined brightness
target values, the Light Controller can control up to four lighting circuits
which are independent of each other. It is possible to combine the sensor
values from several Light Sensors for the calculation of an individual control
circuit. In this way a constant lighting control can also be implemented in
areas with difficult lighting conditions.
The brightness value calculated for the constant lighting control via the Light
Controller (master) can be transferred on the KNX or directly in the device
on another output. Further components of the KNX lighting system (slaves),
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Switch/Dim Actuators SD/S and DALI Gateways DG/S, can
e.g. ABB i-bus
thus be integrated into an energy efficient constant lighting control.
Rooms are lit up differently by the incidental daylight and the artificial lighting
of the lamps. However not all surfaces in the rooms, e.g. walls, floor, and
furniture reflect the light which falls on them in the same manner.
Accordingly, even though there is an exactly calibrated constant lighting
control in daily operation, deviations to the set target value may occur.
These deviations can be up to +/-100 lx. Usually the differences result due to
changed ambient conditions in the room, new or moved furniture, persons or
paper.
Hereby, the reflection properties of the surfaces can differ significantly from
the original ambient conditions at the time of calibration. Deviations may also
occur if the Light Sensor is influenced by direct or reflected light falling on it.
The Light Controller and the connected Light Sensor are supplied with power
via the KNX and do not require any additional power supply. The control
voltage of the 1-10 V devices is generated by the ballasts.
The Light Controller acts against this control voltage and reduces it. This is
used to set the required dimming value. Switch off is implemented via the
integrated switching relay in the Light Controller.
The setting of the parameters, allocation of the group addresses and
commissioning is implemented with the Engineering Tool Software ETS.
The minimum requirement is version ETS2 V1.3. Preferably the most
up-to-date version should be used.
Important
The Light Sensor of type LF/U 1.1 is not suitable for use on the Light
Controllers LR/S 2.16.1 or LR/S 4.16.1.
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