Switch/shutter actuator 8/4gang 16A RMD
75318003
Switch/shutter actuator 16/8gang 16A
RMD
75310002
Technical
Documentation
© Berker GmbH & Co KG 2007
Version: 04.04.2007
Part 5
(Subject to prior change)
75310002.doc
Seite: 108 / 174
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IV. sun protection with shading control and variable curtain height and variable slat position tracking:
The shading control of the weather station is used. The blinds connected to the switching/shutter
actuator are slatted blinds. When the basic brightness for shading operations is exceeded, the weather
station transmits a 1-bit telegram of value "1" via the "Shading facade [shading control facades 1-4]" to
the bus. The switching/shutter actuator activates the shading function.
The individual facade control of the weather station transmits additionally the slat position to be preset
for sun-dependent slat tracking via the 1-byte object "Slat position (%) facade [individual control facade
...]" and the blind height to be adjusted via the 1-byte object "Shading facade curtain height
threshold/position [individual control facade ...]" to the bus. The slat position and the blind height
required for shading will thus be adjusted in the switching/shutter actuator.
When the brightness drops below the basic brightness for shading operations (with hysteresis, if
programmed), the weather station transmits a "0" telegram via the "Shading facade [shading control
facade 1-4]" to the bus . This deactivates the shading function in the switching/shutter actuator and the
corresponding reaction at the end of sunshine /shading will be executed.
Ideally, the telegrams "Slat position (%) facade [individual facade control …]" = "0 %" and "Shading
facade curtain height threshold/position [individual control facade ...]" = 0 % are suppressed in the
weather station by means of a parameter. The extra slat and blind positioning movement might
otherwise adversely affect the behaviour of the output at the end of shading (possibly brief bucking).
The communication objects must be linked as shown in Fig. 38.
Required parameterization of the switching/shutter actuator (parameters not listed are optional):
- polarity object "Sunshine / shading facade" = "1" sunshine,
- reaction at the beginning of sunshine / shading = variable blind position, variable slat position.
sunsh./shading
blind position
(1 byte)
shading facade…height of curtain
...[individual contral facades 1-4]
(1 byte)
Weather station
Shutter actuator
sunshine/shading facade (1 bit)
sunsh./shading
slat position
(1 byte)
shading facade …
[shading control facades 1-4]
(1 bit)
slat position facade …
[individual control facades …]
(1 byte)
Fig. 38: Programming of the communication objects for application example IV
