2224 WH
The KNX weather station detects the meteorological data “Wind speed”, “Precipitation”, “Twilight”, “Temperature” and the brightness in three directions. Its main area of application is the automatic, weather-dependent control of shading. It is specially designed for use in homes. To increase functional reliability, the weather station monitors itself in some important functions, and reports any corresponding errors to the bus automatically via indicator objects. It is intended for outdoor installation on a mast or on a wall. The bus coupling to the KNX/EIB is integrated (monoblock). Evaluation of the data themselves, in particular the limiting value processing, is performed already in the weather station. A built-in heater protects against degradation of function from frost and moisture condensation down to –20 °C. The heating system further ensures that the sensor surface of the precipitation sensor will dry off quickly after rain, and also melts snow and ice. Power is supplied to the unit via the bus, except for the heating system and the power supply for the precipitation sensor. The weather station requires an external 24 V AC/DC power supply for the heating system, without which precipitation detection is not possible. Logic gates are available for cascading a number of weather stations and for linking the limiting values and the monitoring functions. Blocking elements make it possible to block individual functions at the installation location.
Product characteristics
- Integrated KNX bus coupling unit
- Compact housing
- Low-maintenance device
- Measured-value acquisition and limit value monitoring
The power supply ref.–no.: WSSV 10 is necessary for precipitation detection.
Technical data
| KNX medium: | TP 64 |
| Rated voltage KNX: | DC 21 … 32 V SELV |
| Power consumption KNX: | typical 450 mW |
| Connection, KNX: | terminal |
| External power supply | |
| Rated voltage: | AC/DC 24 V SELV |
| Power consumption: | typical 7.5 W |
| Connection: | connecting terminal yellow/white |
| Ambient temperature: | −20 … 55 °C (free of ice and dirt) |
| Storing temperature: | −40 … +70 °C |
| Protection level: | IP 44 (in position for use) |
| Protection class: | III |
| Dimensions (W x H x D): | approx. 88 x 170 x 204 mm (with assembly arm) |
| Weight: | approx. 240 g |
| Sensor signals: | |
| Temperature sensor | |
| Measuring range: | −20 … +55 °C |
| Accuracy: | ± 1 K (for wind speeds > 0.5 m/s) |
| Wind sensor | |
| Measuring range: | approx. 0 … 40 m/s |
| Accuracy: | ± 2 m/s |
| Precipitation sensor | |
| Measuring range: | precipitation yes / no |
| Sensitivity: | fine drizzle |
| Switch-off delay: | adjustable |
| Brightness sensor | |
| Direction: | east, south, west |
| Measuring range: | approx. 1 … 110 klx |
| Spectral range: | approx. 700 … 1050 nm |
| Accuracy: | 10 % (of measuring range end value) |
| Dawn sensor | |
| Direction: | south |
| Measuring range: | approx. 0 … 674 lx |
| Spectral range: | approx. 700 … 1050 nm |
| Accuracy: | 10 % (of measuring range end value) |
