Name: Cala KNX - Ambient Climate Sensor and Control
SKU: cala-fr
Availability: InStock

Description

Cala KNX Ambient Climate Sensor and Control

KNX touch controller with sensor and control functions

The Sensor with Cala KNX display for the KNX bus system measures various ambient climate. Via the bus, the indoor sensor can receive external values and process them further with its own data to a total value (mixed value, e.g. room average). All measured values can be used for the control of threshold value-dependent switching outputs. States can be linked via AND logic gates and OR logic gates. Multi-functional 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 humidity or CO2-concentration) and/or heating/cooling (according to temperature), depending on the respective model.

Cala KNX features a touch display that shows various display and control pages depending on the individual configuration. There is one page available that shows the current measured values, a menu area to adjust device settings and pages with touch control elements for internal temperature control, for light (manual switching or dimming), for shades or windows (manual operation).

Cala KNX is supplemented with a frame of the switch series used in buildings, and thus fits seamlessly into the interior fittings.

More info and ETS product database

Functions and Operation

Common features in all models:

Colour touch display with display pages for device settings, measuring values, controls of 1x heating/cooling, 3x light, 3x drive (shading, window)
Screen saver (clock, off) and key tone may be switched on or off.
4 inputs for binary contacts or T-NTC temperature sensor.
8 AND and 8 OR logic gates each with 4 inputs. All switching events as well as 16 logic inputs (in the form of communications objects) can be used as inputs for the logic gates. The output from each gate can be configured optionally as 1-bit or 2 x 8-bit
8 multi-function modules (computers) for changing the input data by calculations, by querying a condition or by converting the data point type
4 manipulated variable comparators to output minimum, maximum or average values. 5 inputs each for values received via communication objects

Cala KNX AQS/TH functions:

Measuring the CO2-concentration of the air, the temperature and air humidity (relative, absolute), each with mixed value calculation. The share of internal measurement value and external value can be set as a percentage.
Bus message, whether the values for temperature and air humidity are within the comfort field (DIN 1946). Dew point calculation
Threshold values can be adjusted per parameter or via communication objects
PI-controller for heating (one or two-level) and cooling (one or two-level) according to temperature. Regulation according to separate set points or basic set point temperature
PI controller for ventilation according to humidity and CO2-concentration: Ventilate/Air (one-level) or Ventilate (one or two-levels)
Summer compensation for cooling systems. A characteristic curve matches the target temperature in the room to the external temperature and sets the minimum and maximum target temperature values

Cala KNX TH functions:

Temperature and air humidity measurement (relative, absolute), in each case with mixed value calculation. The share of internal measurement value and external value can be set as a percentage
Bus message, whether the values for temperature and air humidity are within the comfort field (DIN 1946). Dew point calculation
Threshold values can be adjusted per parameter or via communication objects
PI-controller for heating (one or two-level) and cooling (one or two-level) according to temperature. Regulation according to separate setpoints or basic set point temperature
PI controller for humidity according to humidity: Ventilate/Air (one-level) or Ventilate (one or two-level)
Summer compensation for cooling systems. A characteristic curve matches the target temperature in the room to the external temperature and sets the minimum and maximum target temperature values

Cala KNX T functions:

Measuring the Temperature with a mixed value calculation. The share of internal measurement value and external value can be set as a percentage
Threshold values can be adjusted per parameter or via communication objects
PI-controller for heating (one or two-level) and cooling (one or two-level) according to temperature. Regulation according to separate set points or basic set point temperature
Summer compensation for cooling systems. A characteristic curve matches the target temperature in the room to the external temperature and sets the minimum and maximum target temperature values

Technical Data

Housing	Real glass, plastic
Display	Visible diagonal: 2.3 inch (59 mm) Resolution: 320 × 240 pixel
Colours	• white glass, white housing • black glass, matt black frame
Assembly	Flush mounting (Wall mounting in junction box Ø 60 mm, 42 mm deep)
Protection category	IP 20
Dimensions	approx. 55 × 55 × 35 (W × H × D, mm), mounting depth approx. 7 mm
Total weight	approx. 90 gr (incl. supply line, base plate
Ambient temperature	Operation -10…+50°C, Storage -20…+60°C
Ambient humidity	max. 95% RH, avoid condensation
Operating voltage	KNX bus voltage
Bus current	max. 18 mA
Data output	KNX +/- bus connector terminal
BCU type	Integrated microcontroller
PEI type	0
Group addresses	max. 2000
Allocations	max. 2000
Communication objects	Cala KNX AQS/TH: 405 Cala KNX TH: 367 Cala KNX T: 313 Cala KNX AQS: 286
Inputs	4× analogue/ digital, max. cable length 10 m.
Measurement range	-40…+80°C
Resolution	0.1°C
Accuracy	±0.5°C at +10…+50°C ±1°C at -10…+85°C ±1.5°C at -25…+150°C

CO2-sensor (for Cala KNX AQS/TH):

CO2-measuring range	0…2000 ppm
CO2 resolution	1 ppm
CO2 accuracy	± 50 ppm ± 3% of the measured value

Temperature sensor (for Cala KNX AQS/TH, Cala KNX TH, Cala KNX T):

Temperature measuring range	-10…+50°C
Temperature resolution	0.1°C
Temperature accuracy	± 0.5°C

Humidity sensor (for Cala KNX AQS/TH, Cala KNX TH):

Humidity measuring range	0…95%
Humidity resolution	0.1%
Humidity accuracy	0…20% = ± 5% RH 20…80% = ± 3% RH 80…95% = ± 5% RH
Humidity drift	± 0.5% RH per year in normal atmosphere

Measuring accuracy

Measurement deviations due to sources of interference (see chapter Installation location) must be corrected in the ETS in order to ensure the specified accuracy of the sensor (offset). For a correct CO2 measurement it is necessary to install the device in a windproof socket. The specified CO2 measurement accuracy is achieved after a run-in of 24 hours (without bus voltage interruption), if the sensor comes into contact with fresh air (350…450 ppm) at least once during this period. After this, the CO2-sensor performs a self-calibration every two weeks, in which the lowest CO2-value measured during this period (without bus voltage interruption) is taken as a reference for fresh air. In order to ensure permanent accuracy, the sensor should be supplied with fresh air at least once every two weeks. This is normally the case during room ventilation. During Temperature measurement, the self-heating of the device is taken into consideration by the electronics. It is compensated for by the software, therefore the displayed/output inside temperature measuring value is correct.