House Control and Weather Sensors - LOGO! Set 11
Entry ID: 68585346, V2.1, 09/2018
Siemens AG 2018 All rights reserved
3 Mode of Operation
Detailed information on the house functions controlled in this application example
can be found in the LOGO! Set 9 documentation under entry ID 64143308.
It is also possible to use the LOGO! Set 11 individually as a mere weather station
or to control other devices.
3.1 Weather sensors
3.1.1 Wind sensor
The measured values from the wind sensor are processed in the LOGO! program
"68585346_LOGO!_Set11_LOGO!_8.lsc” in the "Blinds” program part.
In automatic mode, all blinds are raised in the event of "strong” wind via function
block "wind” (B183/analog threshold trigger).
For protecting the blinds, "strong wind” (here, 20 km/h) is given functional priority
over high solar irradiation (here, 20 kLux) and lowering via weekly timers.
The function block "wind” can be called up in parameter assignment mode with the
respective block name using the LOGO! display or LOGO! TDE. This makes it
possible to adjust the threshold values for the wind speed for opening the blinds.
When wind speeds fall below 18 km/h, the LOGO! program signals that the wind
has died down and the blinds can be moved down again.
For wind velocities below the limit value (here, 18 km/h), the blinds will be raised
in the morning and lowered in the evening automatically according to the set
times of the weekly timers.
3.1.2 Light sensor
The light sensor is processed in the LOGO! program in the blinds control. In
automatic mode, all blinds are lowered in the event of high solar irradiation (here,
20 kLux) via function block "sun” (B184/analog threshold trigger).
High solar irradiation takes priority over raising via weekly timers.
Manual switching of blinds takes highest priority, even if the automatic mode is
activated and high solar irradiation occurs.
The function block "sun” can be called up in parameter assignment mode with the
respective block name using the LOGO! display or LOGO! TDE. This makes it
possible to adjust the threshold values for sun irradiation for closing the blinds.
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