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A6V10575277

Product catalog summary

Overview
The document provides detailed information on the Desigo™ Room Automation system, focusing on the DXR2 series of compact room automation stations. These stations are designed for HVAC, lighting, and shading applications in buildings requiring high functionality and flexibility. They support BACnet MS/TP communication and KNX PL-Link bus for sensor and actuator connections.

Features
The DXR2 series is compact and programmable, facilitating easy installation in tight spaces. They include plug-in terminal blocks for easy replacement and support various room automation applications such as HVAC, lighting, and shading. Preinstalled applications cover systems like variable air volume (VAV), fan coil systems, dual duct VAV, chilled beam cooling, and radiant ceiling heating.

Functions
The functionality of these stations depends on the chosen application, parameters, and input/output configuration. Communication is enabled through BACnet MS/TP and USB, with additional functions via the KNX PL-Link bus.

Technical Design
The power supply provides controlled voltages for inputs and outputs, with an internal bus power supply for KNX PL-Link. Terminal covers are not included and must be ordered separately.

Safety and Installation
Compliance with national safety regulations is essential to prevent injury and damage. Devices can be mounted on standard rails or flat surfaces, with guidelines for wiring and strain relief to avoid mechanical stress.

Technical Data
Technical specifications include processor type, RAM, communication resolution, power supply requirements, and input/output configurations. Information on resistance and temperature sensors, voltage measurement, and power consumption is also provided.

Disposal and Warranty
Devices must be disposed of according to European Guidelines and local regulations. Siemens warranties apply only to applications using Siemens products.

Line Failure Detection
Specifications for digital inputs include universal and digital input voltages and currents, and contact resistance requirements for closed and open contacts.

Differential Pressure Sensor
The sensor measures 0 to 500 Pa, with an overload range up to 100 kPa, zero-point accuracy of 0.2 Pa, and a resolution of 12 bits.

Outputs
Outputs are short-circuit proof, including various configurations of Triacs and Analog Outputs (AO) with specific voltage and current parameters.

Switching Outputs
Triac outputs are designed for AC 24 V with specific permissible loads and are short-circuit proof.

Supply for Field Devices
Details on output voltage and permissible load for different DXR2 models, with short-circuit protection, are provided.

Connections and Interfaces
Includes MS/TP and KNX interfaces with specific baud rates and protections, as well as USB connections.

Wiring Connections
Details on pluggable screw terminals, wire types, and stripping lengths, along with maximum wiring lengths for various signals.

Conformity and Standards
The document lists compliance with various IEC/EN standards, EU conformity, and other international approvals, including BACnet and environmental compatibility.

Connection Terminals
Provides pin descriptions and terminal module channels for different DXR2 models, including power supply and output configurations.

Dimensions
Physical dimensions of the device with and without terminal cover are provided.

Issued By
Siemens Switzerland Ltd, with contact information and a note on technical specifications being subject to change.

Catalog excerpts

For building with increased demands placed on functionality and flexibility in Room Automation and VAV applications. • Compact, programmable room automation stations for HVAC, lighting, and shading • Communication BACnet MS/TP (BTL certified) • KNX PL-Link bus to connect sensors, actuators, and operator units (including bus power) • USB interface • Operating voltage AC 24 V • Mounted on standard DIN rails or on the wall • Plug-in terminal blocks Smart Infrastructure

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Features Programmable The DXR2... room automation stations provide the infrastructure for system and applicationspecific 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 ● ● Room automation applications combining multiple disciplines (HVAC, lighting, shading) into one comprehensive solution. Desigo TM room automation offers the highest degree...

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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 • BACnet MS/TP • 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. LED indication Service...

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The devices are supplied without terminal covers. The terminal covers must be ordered separately. See Accessories. Order numbers: World (excluding the U.S. and Canada) Product documentation Topic Related documents such as the environmental declarations, CE declarations, etc., can be downloaded from the following Internet address: https://siemens.com/bt/download Siemens Smart Infrastructure

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Identification Each device has a unique serial number to ensure efficient commissioning. It is provided on the adhesive barcode label. The serial number can be read directly into the engineering tool using a barcode reader. Wiring Wiring must be sufficiently insulated to the available rated voltage. Sizing and fusing of the wiring depends on the connected load. Triac outputs AC 24 V Individual Triac outputs may have a max. load of 6 VA (heating up the device). The following possibilities are permitted: • Multiple motorized actuators with a total of max. 6 VA. • 1 thermal actuator with 6 VA start...

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The room automation stations can be snapped onto standard rails or screwed onto a flat surface. Strain relief Strain relief protects flexible electrical wiring against mechanical stress. The wiring must be fixed using cable binders to the tabs on the housing base. Terminal cover Break off the cable inlets to insert the cables to the room automation station. To take off the terminal cover: Siemens Smart Infrastructure

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Operation The outputs have no electricity when power fails. USB communications that does not work points to improper grounding of AC 24 V operating voltage (connection ⏊ must be grounded). Disposal The device is considered an electronic device for disposal in accordance with the European Guidelines and may not be disposed of as domestic garbage. ● Dispose of the device through channels provided for this purpose. ● Comply with all local and currently applicable laws and regulations. Warranty Technical data on specific applications is only valid on Siemens products. Siemens rejects any and all...

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Technical data *) For thermal valve actuators (starting current) with pulse width modulation 5...50% and pulse length of ca. 1 s. Power for the Triac outputs must be reduced if the max. load of 18 VA is required for AC 24 V field supply on the DXR2.x18... Function data Power data Siemens Smart Infrastructure

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The inputs are protected against incorrect wiring AC 24 V. Inputs: Overview Siemens Smart Infrastructure

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Siemens Smart Infrastructure

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Wiring connections Conformity Ambient conditions and protection classification Siemens Smart Infrastructure

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Siemens Smart Infrastructure

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_ 13 Siemens Smart Infrastructure

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Siemens Smart Infrastructure

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Dimensions Without terminal cover Siemens Smart Infrastructure With terminal cover

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*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.

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