The weather station Plus for KNX detects the wind speed, wind direction, precipitation, global radiation, temperature, twilight, relative humidity and air pressure as well as determining brightness directionally using four sensors.
The measured data is used to calculate the maximum value for the brightness sensors, absolute humidity, perceived temperature and comfort level.
Area of use is the automatic, weather-dependent shading control system specifically for home use.
The weather station monitors some of its own major functions and reports corresponding faults automatically via message objects on the bus.
Monitoring of the applied voltage. Failure is reported using a communication object on the bus.
With integrated bus coupler.
Mounting outdoors on a pole or on the wall.
The position of the mounting location can be determined using GPS.
Functions
Two limit values with adjustable hysteresis for each sensor can be parameterised internally or specified as 8-bit or 16-bit values.
A teach-in function enables the current measured value to be applied to a limit.
All limit objects have a parameterisable switch-on and switch-off delay.
16 logic gates (AND, AND with return, OR, exclusive OR, NAND, NOR) with up to 4 inputs for external and internal 1-bit values.
Four blocking elements for disabling functions or manual operation.
An automatic shading control system for up to 8 facades can be realised with sun position-dependent slat tracking and a hanging height control system.
All values can be output in the event of a change of value or on a cyclical basis. The outputs of the blocking elements can only be sent in the event of a change of value.
Weather stations can be cascaded using the logic functions. This is recommended for upgrading functions (measurement of the wind speed on different facades) or for a significant increase in functional reliability due to redundancies.
Technical data
KNX medium
TP256
Power supply
Rated voltage
DC 21 to 32 V SELV
Current consumption
100 to 400 mA
Connection cable
Cable type
LiYCY 4xAWG26
Cable length
5 m
Total length per line
15 m
Number of weather stations
max. 3 (per line)
Ambient temperature
-30 °C to +60 °C
Protection class
IP44
Wind direction sensor
Measurement range
1 to 360°
Resolution
1°
Precision
±10°
Wind speed sensor
Measurement range
0 to 40 m/s
Resolution
0.1 m/s
Accuracy (≤ 10 m/s)
±1 m/s
Accuracy (≥ 10 m/s)
±5%
Temperature sensor
Measurement range
-30 °C to +60 °C
Resolution
0.1 K
Precision
±1 K
Precipitation sensor
Measurement range
yes / no
Precision
Fine drizzle
Brightness sensors
Quantity
4
Measurement range
0 to 150 klx
Resolution
1 klx
Precision
±3%
Twilight sensor
Measurement range
0 to 900 lx
Resolution
1 lx
Precision
±10 lx
Air pressure sensor
Measurement range
300 to 1100 hPa
Resolution
0.01 hPa
Precision
±0.5 hPa
Humidity sensor
Measurement range
0 to 100 % rel. humidity
Resolution
0.01 g/m³
Precision
±10% rel. humidity (20 °C)
Abs. Humidity
0 to 400 g/m³
Global radiation
Measurement range
0 to 1300 W/m²
Resolution
1 W/m²
Precision
±10%
Dimensions
Dia. 130, H 68
Notes
Measured values are valid for the mounting location. Differences to other weather services are possible.
All accuracy values for the measured values refer to the full respective measuring value range.