![Jung Smart Control SC 1000 KNX Скачать руководство пользователя страница 139](http://html1.mh-extra.com/html/jung/smart-control-sc-1000-knx/smart-control-sc-1000-knx_product-documentation_2031686139.webp)
Art. No. SC 1000 KNX
4.2.4.1.21 Brightness sensor
The device has a brightness sensor that measures the ambient lighting locally. The brightness
sensor is located on the front of the device outside of the display (figure 69).
Figure 69: Brightness sensor on the front of the device
(A) Brightness sensor
The determined brightness value can be compared to a configured limiting value. If values fall
below or exceed the limiting value, it is possible to transmit a switching telegram to the bus
allowing lighting to be triggered, for example. The brightness sensor and associated limiting
value evaluation can be enabled and influenced separately in the ETS in the parameter node
"Display". In the setting "available", the parameter "Limiting value object brightness sensor"
enables the limiting value evaluation and switches the corresponding 1-bit limiting value object
to visible. In this case, additional parameters are available for defining the limiting value and
specifying a switching hysteresis. In the setting "not available", the device's internal brightness
sensor is functionless and therefore no limiting value evaluation is possible.
The physical measurement range of the brightness sensor integrated in the device is referenced
to a standard living room measurement during the measured value evaluation and assigned to
the percentage value range 0...100 %. The percentage measured value corresponds reliably to
the lighting situation in the room (0 % = Darkness, 100 % = as bright as daylight, maximum
ambient lighting) and is compared immediately with the configured limiting value in the ETS.
If the preset limiting value is exceeded, a "1" telegram is transmitted to the bus via the limiting
value object. As soon as values fall below the limiting value less the set hysteresis, the device
transmits a "0" telegram to the bus.
After a device reset (programming with the ETS, switching on the power supply), the brightness
value is evaluated immediately. If the determined brightness should be greater than the
configured limiting value in this case, the device transmits a "1" telegram to the bus. A "0"
telegram is - as described - first retransmitted when the ambient lighting falls below the limiting
value less the hysteresis.
Page 139 of 347
Software "Smart Control 501511"
Functional description