Datasheet

4
Room automation
Overview and selection tools
Product range overview
Siemens Switzerland Ltd http://www.siemens.com/buildingtechnologies-productcatalog 2014
Building Technologies Division
4-5
Desigo Total Room Automation topology
The total solution for the room
Desigo TRA (Total Room Automation) is used in buildings with multiple disciplines for room
automation (HVAC, lighting, blinds) all combined in one total solution. Desigo TRA offers solutions
with greater functionality and fl exibility, allowing for energy-optimized plant operation without loss
of comfort (energy performance class A as per EN 15232). The programmable room automation
stations PXC3 communicate via BACnet/IP and offer integrated interfaces to the KNX and the DALI
bus as an option.
Room automation stations PCX3
The room automation stations of the PXC3 series can assume control for multiple rooms. They
communicate with each other or other system components via BACnet/IP. The room automation
stations have two Ethernet interfaces to allow for low-cost cabling via line topology (Daisy Chain).
TX-I/O modules connected directly to the PXC3 allow for direct connection of fi eld devices. The
KNX connection enables room units, sensors and actuating devices to communicate with the room
automation station up to 500 m. Selected Siemens fi eld devices support KNX PL-Link and can be
connected as fi eld devices per plug-and-play to the bus. Desigo Tools parameterize them; KNX
commissioning software (ETS) is not required. Devices with KNX S-Mode can be integrated with the
help of ETS commissioning software.
The DALI bus is used for lighting control. Commercially available DALI-EVG electronic ballasts and
dimmers can be connected. The room automation stations are capable of powering TX-I/O modu-
les, KNX and DALI bus. With TX-I/O modules and KNX connection, separate supplies can be added
as needed.
Programmable room automation
The PXC3 room automation station is programmable based on proven application blocks. Solutions
tailored to specifi c needs achieve maximum effi ciency and comfort. A comprehensive block library
for room automation is provided as part the scope of delivery. The library contains predefi ned
application functions for room climate, lighting, shading, and superimposed room functions. They
can be combined to form individual solutions together with operating and display functions. The
individual application functions can be adapted to customer needs and are freely programmable.
The application functions do not depend on the selected fi eld devices.