User Manual

2
Siemens A6V11393931_en--_c
Smart Infrastructure 2020-09-01
Features
Configurable
The DXR1.. automation stations provide the infrastructure for systems and application-
specific functions which can be configured.
Compact series
The compact build allows direct mounting on the damper shaft. It is designed for VAV and
FPB.
Plug-in terminal blocks
Plug-in terminal blocks for easy exchange of room automation stations.
Integrated actuator
The actuator gear base is integrated into the housing of the actuating DXR. It supports
dampers with up to 5 Nm torque.
Use
Desigo Room Automation offers the highest level of flexibility for energy-optimized solutions
while satisfying requirements for temperature control, ventilation and comfort using standard
tools and established workflows.
Pre-installed application types
● Variable (VAV), Fan-Powered Box (FPB) and constant air volume flow
– With staged and modulating electric heating
– With modulating hot water / chilled water with room or supply air temperature control
Application options
● Separate temperature and air volume flow setpoints for all 4 operating modes
● Separate minimum and maximum cooling and heating flow setpoints
● Single-stage, multi-stage or variable fan control (FPB/DXR1.E09PDZ-113)
● Chilled water and hot water valve
● Extract air volume flow control
Functions
The selected application and its parameters as well as input and output configuration
determine the 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
Note: DXR1 supports cabling based on daisy chain topology. The max. number is 20
devices and in the event of a failed automation station, all other stations are no longer
reachable. DXR1 can be cabled as ring topology if higher reliability is required. This
requires support for layer 2 switches RSTP (Rapid Spanning Tree Protocol) as well as
SNMP monitoring and that any loss of superposed system is reported. In the event of a
fault, switching the communication paths can take between 10 and 30 seconds. DXR1
routes the RSTP protocol for the switches. It does not actually process the RSTP
protocol. Further information can be found in Application Guide for BACnet Networks in
Building Automation (A6V11159798).
● USB connection for service, commissioning and firmware download