The Sensor Sewi KNX AQS/TH LPr light for the KNX bus system captures the presence of persons even in the event of slight movements, such as sedentary activity in the office. Permanentbrightness monitoring means that the light can be switched off from an adjustable brightness value. In addition, the Sewi KNX AQS/TH L-Pr light measures temperature, air humidity (including mixed value calculation) and CO2 concentration and calculates the dew point.
All measurement values can be used for the control of limit-dependent switching outputs. States can be linked via AND logic gates and OR logic gates. Multi-function modules
change input data as required by means of calculations, querying a condition, or converting the data point type. In addition, an integrated manipulated variable comparator can compare and output variables that were received via communication
objects.
Integrated PI controllers control ventilation (according to CO2 concentration) and heating/cooling (according to temperature).
Models:
Nr. EL-71420 Sewi KNX AQS/TH L-Pr light, white
Nr. EL-71422 Sewi KNX AQS/TH L-Pr light, black
Functions
- Brightness measurement with brightness regulation •
- Presence of persons is detected
- Measuring the CO2 concentration of the air, the temperature and air humidity (relative), each with mixed value calculation. The share of internal measurement value and external value can be set as a percentage
- Dew point calculation
- Threshold values can be adjusted per parameter or via communication objects
- PI-controller for heating (one or two-stage) and cooling (one or two-stage) according to temperature. Regulation according to separate setpoints or basic setpoint temperature
- PI controller for ventilation according CO2 concentration: Ventilate/Air (one-stage) or Ventilate (one or two-stage)
- 2 AND and 2 OR logic gates, each with 4 inputs. All switching events as well as 8 logic inputs in the form of communications objects can be used as inputs for the logic gates. The output of each gate can be configured optionally as 1- bit or 2 x 8-bit
- 2 multi-function modules (computers) for changing the input data by calculations, by querying a condition or by converting the data point type
- 2 manipulated variable comparators to output minimum, maximum or average values. 5 inputs each for values received via communication objects
- Configuration is made using the KNX software as of ETS 5.
Technical Data
| General: |
| Casing |
plastic |
| Colours (similar) |
• RAL 9003 / RAL 9002 (white)
• RAL 9005 (black) |
| Ceiling installation |
Surface-mounted or on a suitable appliance box |
| Size (Ø × H) |
≈ 105 mm × 32 mm |
| Degree of protection |
IP30 |
| Total weight |
≈ 80 g |
| Ambient temperature |
0…+45°C |
RH (relative humidity),
non-condensing |
5...85 % |
| Storage temperature |
-20...+70°C |
| Overvoltage category |
III |
| Pollution degree |
2 |
| KNX bus: |
| Medium |
TP1-256 |
| Configuration mode |
S-Mode |
| Group addresses max. |
2000 |
| Assignments max. |
2000 |
| Communication objects |
243 |
| Nominal voltage |
30V DC SELV |
| Power consumption |
≤ 15mA |
Connection KNX plug-in terminal
Conductor diameter
Stripping length |
Ø 0.8mm s
5 mm |
| Duration after bus voltage restoration until data is received |
≈ 5 s |
| Sensors: |
Detection method Presence
Passive infrared method |
PIR |
| Presence coverage angle |
≈ 94° × 82° |
| Presence range |
≈ 5 m |
| Brightness measurement range |
0 Lux … 2000 Lux |
| CO2 measurement range |
400...5000 ppm |
| Temperature measurement range |
-5…+60°C |
| Humidity measurement range |
5...85 % |
