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Siemens Wall-mounted sensors and room operator units for KNX/ETS and KNX/ACS CM2N1602en_05
Building Technologies Functionality / Use 2018-09-14
4.2 Use
Six complementary device types are available which can control HVAC and electric
applications.
• Room temperature, humidity, and CO
2
content of the room are controlled
ac
cording to the demand and to energy efficiency criteria.
• Four freely parameterizable pairs of touchkeys can be configured for light
switching, dimming, blinds, scenes, sending values, etc.
T
he sensors in the room operator unit measure:
– Room temperature.
– Relative room humidity.
– CO
2
concentration in rooms with varying occupancy due to time or number of
people such as in museums, movie theaters, offices, meeting rooms, class
rooms, auditoriums, hospitals, living spaces.
T
he room operator units control and operate:
– Room temperature (via PID controller)
– Humidity (via threshold value)
– Air quality (via threshold value)
– Fan stages (independent of temperature, air quality and humidity control
functions)
– Room operating modes
– Input of the occupancy state
as well as
– Switching of electrical equipment
– Switching and dimming of lights
– Control of shading / blinds
– Selecting and saving of scenes
T
he room operator units with display show the following information about the
room:
– Present room temperature, outdoor temperature.
– Present room humidity, outdoor humidity .
– Present room air quality .
– State of window contacts
– Device mode (e.g. heating, cooling).
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