Basic Documentation

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Siemens Wall-mounted sensors and room operator units for KNX/ETS and KNX/ACS CM2N1602en_07
Smart Infrastructure Functionality / Use 2020-06-20
no one is in the room or if the window is open, the radiator valve closes and
reduces the room temperature automatically. Up to 4 window contacts and
presence detectors can be connected via KNX bus.
4.5.2 Presence dependent room climate control with
operation of all disciplines
Key (Example of a possible combination of components)
1. Room operator unit QMX3.P02
2. Room sensor QMX3.P70
3. Room operator unit QMX3.P37
4. Presence detector UP 258
5. Switch actuator N 562/11 for fan
6. Shutter/blind actuators N 523/04
7. Universal dimmer N 528/31 with sub-module N 528/41
8. Thermal drive actuator N 605 for up to 6 rooms
9. Thermal valve actuator STA23 (up to 4 per room)
This application is especially suitable for rooms with several heaters, e.g. in offices,
lecture halls or conference rooms.
The room operator unit (1) measures and controls the room temperature and
sends the control signal to the thermal actuator (8) via KNX bus. Together with the
integrated room temperature control, the sensor provides for a comfortable room
climate.
The Room operator unit (2) measures the air quality (CO
2
) in the room, controls the
ventilation as required and thus saves energy and costs. The buttons on the room
operator unit (1 and 3) can be used to control shading, lighting and scenes for
example.
Additional room operator units (1) can also be connected, e.g. in large rooms with
several doors.