User Manual

2
Siemens CM1N9204en
Smart Infrastructure 2020-03-17
Features
Programmable
The DXR2... room automation stations provide the infrastructure for system and application-
specific functions and can be programmed.
Compact series
The compact build permits mounting in narrow spaces and on standardized rails, and is
particularly well suited for compact panels or plants with integrated panel.
Plug-in terminal blocks
Plug-in terminal blocks to easily exchange room automation stations.
Use
● Radiators, chilled/heated ceilings, fan coil applications.
● Room Automation applications combining multiple disciplines (HVAC, lighting, shading)
into one comprehensive solution. Room Automation offers the highest level of flexibility
for energy-optimized solutions without sacrificing comfort.
● Room Automation applications can be extended with lighting and blinds applications via
KNX PL-Link.
Preinstalled applications
● Fan coil: Cooling or heating, cooling and heating (2-pipe), or cooling/heating (4-pipe),
supply air minimum limitations, outside air control
● Chilled beam active or passive cooling (2-pipe) or cooling/heating (2-pipe) or
cooling/heating (4-pipe)
● Radiant ceiling: Cooling, cooling and heating (2-pipe), or cooling/heating (4-pipe)
● Radiator: Hot water, steam (2 or 4-pipe) or electric stepped controlled
● Light: Up to 4 separate zones
● Blinds: 1 or 2 motors
Application options
● Separate temperature setpoints for up to 4 operating modes.
● Chilled water and hot water valve (2-pipe or 4-pipe)
Functions
The selected application and its parameters as well as input and output configuration
determine the room automation station's functionality.
A detailed description of functionality is available in the ABT (Automation Building Tool)
online help.
Communication
● 2-Port Ethernet switch for cost-effective cabling via line topology.
● USB connection for service and commissioning, firmware download, and LAN access.
● The following functions are available with the KNX PL-Link bus:
– Communication with room operator units, switches, sensors, actuators, and
luminaires.
– Plug-and-play connection of Siemens field devices with KNX PL-Link.
– Integration of common devices using KNX S-Mode (ETS engineering required).