1. ABB STOTZ-KONTAKT GmbH ABB i-bus® KNX Weather Unit, Weather Sensor
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 1

2. Weather Unit (WZ/S 1.1), Weather Sensor (WES/A 2.1) Overview
MDRC
Application program „Sensor Data 2.0“
Conversion not possible
Weather Sensor WES/A 2.1 SM
9 Measured variables detectably
100 x 96 x 128 (H x W x D)
Enclosure IP 44
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 2

3. Weather Unit (WZ/S 1.1), Weather Sensor (WES/A 2.1) Wiring diagram
The designations are alike with both devices.
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 3

4. Weather Unit (WZ/S 1.1), Weather Sensor (WES/A 2.1) Technical Data
Over the RS485-interface the data are conveyed to the Weather Unit.
The devices are protected from exchanging the connections (1, 2, A or B).
Communication Weather Unit and Weather Sensor:
Cable connection
4 wires
Cable length
max. 100 m
Cable type
PYCYM (2x2x0.8mm)
J-Y(ST)Y (2x2x0.8mm)
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 4

5. ABB i-bus® KNX Weather Unit WZ/S 1.1
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 5

6. Weather Unit (WZ/S 1.1) Hardware
Auxiliary voltage and data interface for Weather Sensor supply
1 (0V potential)
2 (24 V potential)
A (RS485 interface)
B (RS485 interface)
Programming-button/LED
Bus connection terminal
Power supply    
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 6

7. Weather Unit (WZ/S 1.1) Application program „Sensor Data 2.0”
Adjustable which Weathers Sensor are connected.
Measured value represented in the appropriate type of data point, e.g. in m/s, in lux or in °C.
2 threshold value each input with upper and lower limit / threshold value modified via the bus.
Logic AND / OR, 4 inputs, invertible.
4 memory with 24 values / storage each takes place in the FiFo principle (ring puffer).
Minimum duration underflow and over range adjustable (If the send communication reverts during the minimum duration, no telegrams are sent).
Offset temperature +/- 5 °C.
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 7

8. ABB i-bus® KNX Weather Sensor WES/A 2.1
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 8

9. Weather Sensor (WES/A 2.1) Overview sensors
Twilight
3 x Brightness
Rain
Temperature
Day-/Night-change over
Wind
GPS
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 9

10. Weather Sensor (WES/A 2.1) Functionality of the individual sensors
Twilight 
Total measuring range
0…999 Lux
Resolution
1 Lux
Accuracy
+/- 200 Lux
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 10

11. Weather Sensor (WES/A 2.1) Functionality of the individual sensors  
3 x Brightness  Right  Left  Middle
Total measuring range
0, 1.000… Lux
Resolution
1.000 Lux
Measuring range
1.000…9.999 Lux
Accuracy
+/ Lux
10.000… Lux
+/ Lux
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 11

12. Weather Sensor (WES/A 2.1) Functionality of the individual sensors
Rain 
The sensor surface is permanently heated.
After a rain alarm, the rain message will continue to be issued for approximately another 6 minutes.
The sensor surface is heated to approximately + 50 °C above the ambient temperature.
ATTENTION: Rain sensor is hot in the operation!
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 12

13. Weather Sensor (WES/A 2.1) Functionality of the individual sensors
Temperature 
Total measuring range
- 25 °C…+ 85 °C
Resolution
0,1 °C
Measuring range
- 25 °C…+ 10 °C
Accuracy
+/- 2,5 K
+ 10,1°C…+ 85 °C
+/- 1,5 K
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 13

14. Weather Sensor (WES/A 2.1) Functionality of the individual sensors
Day / night 
Day => night
> 10 Lux night
Night => day
< 10 Lux*
* One minute and 15 seconds after the brightness value has exceeded 10 lux
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 14

15. Weather Sensor (WES/A 2.1) Functionality of the individual sensors
0 °
315 °
45 °
270 °
90 °
180 °
Wind
Total measuring range
0…24 m/s
Resolution
0,1 m/s
Accuracy (45°…315°)
+/- 22 % from measure value
Accuracy (180°)
+/- 15 % from measure value
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 15

16. Weather Sensor (WES/A 2.1) Functionality of the individual sensors
GPS
Radio receiver of basis from GPS.
Connection to a satellite is sufficient, in order to date and time.
World-wide applicable.
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 16

17. Weather Sensor (WES/A 2.1) Preparation of the Weather Sensors
 Cover with rain sensor
 Catches of the cover (left and right)
 Base   
The cover  of the Weather Sensor is locked on the right and left side of the lower edge .
Remove the cover  from the Weather Sensor by pulling the catches carefully outwards.
Be careful in order not to tear off the cable connection between the circuit board  in the base and the rain sensor in the cover .
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 17

18. Weather Sensor (WES/A 2.1) Installation of the holder
Bridge
Bridge
The weather sensor includes a combined wall/pole holder.
When the unit supplied, the holder is fastened to the back of the housing with adhesive tape.
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 18

19. Weather Sensor (WES/A 2.1) Installation of the Weather Sensors
Horizontal
wall or pole
The Weather Sensor is fastened horizontal and laterally with an assembly angle of 90°.
© ABB STOTZ-KONTAKT GmbH 2CDC N0204 | Seite 19

20. © ABB STOTZ-KONTAKT GmbH 2CDC 504 057 N0204 | Seite 20