Siemens Desigo RXB User manual

DESIGO™
RXB (KNX)
1 Contents
Technical manual
Version 2.37 and higher
2Selection guide
RXC, RXB, RXL, RXA
3System overview
DESIGO RXB
4Hardware overview
DESIGO RX
5
Data sheets RXB (KNX)
Room controllers,
Room unit
6
CLC & RAD
Chilled ceiling and
radiator applications
7FNC
Fancoil applications
8RXB, RXL
Installation guide
9
CM110389en_06
30 Jun 2009 10

CM110389en_06
DESIGO™ RXB (KNX)
Technical manual
Version 2.37 and higher
s
CM110389en_06
DESIGO™ RXB (KNX)
Technical manual
Version 2.37 and higher
s
CM110389en_06
DESIGO™ RXB (KNX)
Technical manual
Version 2.37 and higher
s
CM110389en_06
DESIGO™ RXB (KNX)
Technical manual
Version 2.37 and higher
s
CM110389en_06
DESIGO™ RXB (KNX)
Technical manual
Version 2.37 and higher
s
CM110389en_06
DESIGO™ RXB (KNX)
Technical manual
Version 2.37 and higher
s
CM110389en_06
DESIGO™ RXB (KNX)
Technical manual
Version 2.37 and higher
s
CM110389en_06
DESIGO™ RXB (KNX)
Technical manual
Version 2.37 and higher
s

Siemens Technical manual DESIGO RXB (KNX) CM110389de01_05
Building Technologies Contents 28.02.2009
Contents RXB (KNX)
Tab 01 Contents CM110389
Tab 02 Selection guide DESIGO RXC, RXB, RXL, RXA CA110331
Tab 03 DESIGO RXB System overview CM110380
Tab 04 DESIGO RX Hardware overview CA2N3804
Tab 05 DESIGO RXB (KNX) Data sheets
RXB21.1, RXB22.1 Room controllers for fan-coil systems (FC-10, FC-11, FC-12) CM2N3873
RXB24.1 Room controllers chilled ceiling and radiator systems (CC-02) CM2N3874
QAX34.3 Room unit with PPS2-interface. With temperature sensor, setpoint adjustment,
/Auto / Fan speed switch, with LCD display for room temperature
and operating mode,
with HandyTool function CM2N1640
(For more room units, refer to the DESIGO RX hardware overview in Tab 04)
Tab 06 CLC & RAD – Chilled ceiling and radiator applications
Description of functions for CC-02 CM110384
Applications from CC-02 CM110671
Tab 07 FNC – Fancoil applications
Description of functions for FC-10, FC-11, FC-12 CM110385
Applications from FC-10, FC-11, FC-12 CM110672
Tab 08 DESIGO RXB / RXL Installation guide CM110381

Building Automation
Flexibility
Functionality
RXA
RXB
RXC
Non-communicating
10331Z01en
RXL
Proprietary
Communications
LONWORKS bus
DESIGO™
RXC, RXB, RXL, RXA
Room automation systems
Selection guide

2 / 4
Solutions meeting a variety of needs
The DESIGO RX… room automation systems take care of comfort in
individual rooms or self-contained zones. In this process, the
temperature and quality of the indoor air can be adjusted by use of
an operator unit (the "room unit"). The system is rounded off by
integrated room units for the operation of HVAC, lighting and blinds
where required.
In addition to the room controllers, extension modules and room
units, technically sophisticated application libraries are available,
covering the large majority of common HVAC and electrical
applications.
Integration into the DESIGO building
automation & control system
Communication
Room controllers and
accessories from Siemens or
third-party manufacturers
Identical range of functions in the
applications
Identical room units
RXB RXARXC
RAD, CLC, FNC, VAV, FPB
QAX...
DESIGO
KNX / EIB
standard
devices
LONWORKS
standard
devices
10331Z02en_01
LONWORKS bus
RXL
Proprietary
communication
Principal features
The four ranges, RXC, RXB, RXL, and RXA are tailored to the various bus systems
used in buildings:
RXC: LON bus communication
RXB: KNX / EIB bus communication
RXL: Proprietary communication
RXA: Stand-alone (non-communicating)
RXC: RXC offers the widest selection of HVAC applications, and integrated
applications incorporating lighting and blinds. The RXC controllers are
therefore suitable for more sophisticated HVAC applications where control of
lighting and blinds form part of the requirements.
An important benefit is the scope for combined operation of HVAC, lighting
and blinds in a single room unit.
RXB: RXB offers HVAC room control based on KNX / EIB technology.
In addition to the HVAC functions, sophisticated electrical functions can also
be implemented in conjunction with commercially available KNX / EIB
equipment.
RXB is thus primarily suitable for systems where, in addition to the HVAC
controls, there is an emphasis on electrical functions.
RXL: RXL offers HVAC room control based on proprietary communication.
RXL is primarily suitable for systems where the emphasis is on a cost-
effective HVAC solution for DESIGO without additional functions.
RXA: RXA is the ideal solution for fan-coil systems where no communications
are required.

3 / 4
Product scope
RXC RXB RXL RXA
Communication LON KNX / EIB Proprietary - -
Applications (HVAC functions) and suitable
controllers
(see page 4 for details)
RAD, CLC, FNC, VAV,
FPB, INT (downloadable)
RAD, CLC,FNC
(selected via tool)
RAD, CLC,FNC
(selected via tool)
FNC
(selected via
DIP switch)
Room units for HVAC operation 
Electrical controls (lighting, blinds) Conventional switches EIB third-party devices - - Convention
al switches
Operation of HVAC, lighting and blinds over
bus
QAX5... EIB third-party devices - - - -
Integration of third-party devices (field level) - - - -
Integration into the DESIGO
building automation and control system
- -
Commissioning tool DESIGO RXT10 ETS3 Professional,
(ACS, HandyTool from V2.36)
ACS, HandyTool DIP
switches
Other documentation:
System description CA110333 CA2S3879 (EIB)
CM110380 (KNX)
CM110780 CA2S3880
Applications library CA110300 CA2A3899 (EIB)
CM110389 (KNX)
CM110789 CA2Z3889
Room units
DESIGO RX includes a range of stylish room units designed to satisfy a wide variety of
demands, from simple temperature sensing to integrated operation of HVAC, lighting
and blinds at room level.
Room unit functions
QAX
30.1,
31.1
QAX
32.1
QAX
33.1
QAX
34.1
QAX
34.3
QAX
84.1/
PPS2
QAX
39.1
QAX
90.1,
91.1
QAX
95.1,
96.1
QAX
50.1,
51.1
Built-in room temperature sensor   
Room temperature setpoint adjustment QAX
31.1
QAX
91.1
QAX
96.1

Selection of operating mode ( /Auto)  
Selection of fan speed
 
LCD display for room temperature,
operating mode and fan speed
 
Exchangeable pushbuttons for control of
lighting and blinds

Downloadable application software for
operation of lighting and blinds

PPS2 interface to room controller 
LONWORKS bus communication  2) 
KNX bus communication 2)
Wireless room units 1) 
Batteryless EnOcean technology 2)  
HandyTool (Parametrization of KNX
RXB controllers) 
Suitable for ... RXC
RXA, RXB, RXL, PX 3)
1) The RXZ90.1 receiver is the PPS2 interface for the QAX90.1 / 91.1 room units
2) The RXZ95.1 gateway is the LONWORKS interface, The RXZ97.1 gateway is the KNX interface to the QAX95.1 / 96.1 room units
3) All room units apart from the QAX5… can also be used at the automation level (DESIGO PX). However, the displays on room units
QAX32.1, QAX33.1, QAX34.1, QAX34.3or QAX84.1 only show the request of the user and not the effective state

4 / 4
Applications
The comprehensive application library contains predefined standard applications for
radiators, chilled ceilings, fan-coil units, VAV and fan-assisted VAV units, and integrated
applications for HVAC, lighting and blinds.
The library is continuously updated.
Use Application (software) RXC... RXB... RXL... RXC…
RAD01 LTHW radiator
RAD03 Electric radiator


 
Radiator / chilled ceilings
01717
CLC01 Chilled ceiling
CLC02 Chilled ceiling and radiator-type heating
CLC03 Chilled ceiling and electric radiator
CLC06 Chilled/heated ceiling, two-pipe system with
change-over via LON bus
CLC07 Chilled/heated ceiling, two-pipe system with
change-over via LON bus and radiator
etc.









Fan-coil units
01719
FNC02 Two-pipe system with change-over
FNC03 Two-pipe system with change-over and electric re-heater
FNC04 Four-pipe
FNC05 Four-pipe system with electric reheater
FNC08 Four-pipe system with room supply air cascade control
FNC10 Two-pipe system with change-over and outside air damper
FNC20 Four-pipe system with controlled air damper
etc.



























Variable air volume systems
01718
VAV01 Single-duct supply or extract air system
VAV02 Single duct supply air system with reheater or cooling coil
VAV03 Single-duct supply air system with electric re-heater
VAV04 Single-duct supply and extract air system
VAV05 Single-duct supply/extract air system with re-heater /
cooler
VAV06 Single duct supply and extract air system
with electric re-heater
etc.







Fan-powered box
01721
FPB05 Fan Powered Box unit with electric reheater
(Fan-assisted VAV)

Integrated applications
(HVAC, lighting and blinds)
01720
HVAC Lighting Blinds
INT02 CLC02 4 on/off
INT03 CLC02 2 on/off + 2 dimming
INT05 CLC02 2 on/off 4 up/down
INT07 CLC02 2 on/off + 2 dimming 2 up/down
etc.
INT11 VAV08 4 on/off
INT12 VAV08 2 dimming
INT15 VAV08 2 on/off 2 up/down
etc.







KNX / EIB third-party devices
(Conventional switches)
Siemens Switzerland Ltd
Building Technologies Division
International Headquarters
Gubelstrasse 22
CH-6301 Zug
Tel. [phone]
Fax [phone]
www.buildin
g
technolo
g
ies.siemens.com
© 2000 - 2009 Siemens Switzerland Ltd CA110331en_03
Sub
j
ect to chan
g
e 31 Jan 2009

Building Automation
RXB room automation system
System overview

3
Contents
Comfort and well-being in every room ........................................................................5
Range overview .............................................................................................................6
Coordinated room controllers ...................................................................................... 7
The room units: the key to individual comfort ..........................................................8
Applications .................................................................................................................10
Installation....................................................................................................................11
Engineering and commissioning ............................................................................... 12
Integration into building automation and control systems ....................................15
RXB overview...............................................................................................................18

4

5
Comfort and well-being in every room
Most people in the industrial world spend 90 % of their time indoors.
About one third of this time is spent at work. In this context it is clear
that good indoor air quality, the right room temperature and draught-
free air renewal are vital prerequisites for motivation and a sense of
well-being.
The RXB room automation system ensures individual demand-based comfort for room
users in public buildings, offices, schools, hotels and so on.
The RXB controllers provide control and monitoring of the specific comfort conditions in
rooms and other enclosed spaces. These functions are individually adapted to suit the
requirements of each area of application (room or zone). This makes it possible to
satisfy the demand for individual comfort and create a sense of well-being, while at the
same time saving energy.
One bus for HVAC, lighting and blinds
The RXB controllers perform all the HVAC functions, while, for the control of lighting
and blinds, various solutions are available on the market from different manufacturers.
This third-party equipment is easy to combine with the RXB controllers, due to the
clarity of the KNX specifications, the certification procedure and the use of ETS, the
KNX Tool software.
Stand-alone operation at field level, or
integration into a building automation and control system
The RXB controllers use the standard KNX protocol to communicate with each other
and with other KNX devices. Devices at the field level can be integrated seamlessly
into a building automation and control system. This is where all the higher-level control
and coordination tasks, such as time scheduling, display, or energy optimization are
performed.
10380z03
M
Operation of HVAC equipment, lighting and blinds

6
Range overview
RXB is an innovative range of room controllers and room units. Data communications
are based on KNX technology.
The RXB devices are certified by the Konnex Association.
The RXB hardware
The range comprises room controllers and room units for HVAC operation.
The input and output configurations of the compact controllers, and the style of housing
are fully optimized to suit their field of application.
The HVAC functions are operated via standard room units.
RXB22.1 QAX...
e.g. DELTA profil
10380z05en
VAV
Chilled ceilings
Radiator-type heating
Lighting
Blinds
Fan coil units
HVAC Electrical
KNX components for
electrical applications
RXB24.1
RXB21.1
Controllers Operation
RXB software
Each RXB controller is loaded with software (referred to in this document as the
"application") comprising a set of HVAC applications. The application actually required
is enabled in the commissioning phase.
The Building Automation section of Siemens Building Technologies holds a library of
applications, which is continuously being expanded (see Overview, page 10).
For the engineering and commissioning of a network of RXB controllers, use is made of
ETS3, ACS or a "HandyTool".

7
Coordinated room controllers
RXB21.1 and RXB22.1 compact room controllers for fan-coil units
The input/output configuration and mounting options of these room controller s makes
them ideal for fan coil applications. They can be installed in fan coil units, in control
panels or on ducting.
RXB24.1 compact room controller for chilled ceilings and radiators
This controller contains chilled ceiling and radiator applications, and is designed for
installation in ceiling voids or for underfloor or sill mounting.
Inputs and outputs
The functions of the inputs and outputs are determined by the particular application and
its parameters. So, for example, the AC 24 V outputs can be configured either for
thermic valve actuators or for 3-position actuators (depending on the application).
Connections / Functions RXB 21.1 22.1 24.1
Power supply AC 230 AC 230 AC 230
KNX bus   
PPS2 interface for standard room unit (PPS2)   
Digital inputs 1) 2 2 2
Analog input for LG-Ni 1000 temperature sensor 1 1 1
AC 24 V outputs 2) 4 2 4
Volt-free relay outputs 3) 3 3
Relay for electric heating coil 1
1) For window switches, presence detectors and dew point sensors
2) For control of valve actuators (2-position, 3-position or both, depending on application)
3) For fan control

8
The room units:
the key to individual comfort
The room units of the RXB range cover the widely varying requirements of individual
room occupants. When designing these stylish room units, the designers also paid
special attention to ergonomic factors.
The HVAC system, lighting and blinds can be operated in various ways:
•In the conventional way, with standard room units for HVAC and electric switches to
control lighting and blinds
•Wireless room units for HVAC, which can be located anywhere in the room
•KNX switches and KNX actuators from third-party manufacturers
Conventional HVAC room operation
The standard QAX… room units are available for HVAC applications. They are
connected to the RXB controller via a special (PPS2) interface. In addition to the built-in
room temperature sensor, the QAX3... und QAX9 room units incorporate a bus socket
for the interface to the tool.
Wireless HVAC room operation
The wireless room units, types QAZ90.1 and QAX91.1 are used in conjunction with the
RXZ90.1 receiver. They are ideal
•for use in renovation projects (no wiring required)
•in rooms with flexible partitioning and furnishing
Electrical room operation
A wide range of KNX devices is available on the market for the control of lighting and
blinds.
QAX...
KNX
Room operation, HVAC Room operation, electrical
10380z08en
KNX valve actuator
KNX buttons
KNX actuators
(lamps and
blind motors)
RXB24.1
RXB22.1
RXB21.1

9
Functions of the room units
QAX... 30.1 31.1 32.1 33.1 34.1 34.3 39.1 84.1 90.1 91.1
Built-in room temperature sensor   
Room temperature setpoint
adjustment 
Selection of operating mode
(/Auto)1)  
Selection of operating mode
(/Auto)1) and fan speed
 
LCD display for room temperature,
operating mode and fan speed  
PPS2 interface to
RXB room controller 
Wireless room units 2) 
"HandyTool" (Parameter setting
for KNX RXB controllers)

1) Operating mode Auto: Comfort mode
: PreComfort (Standby) or Economy, depending on control from the
building automation and control system (see page 15)
2) For the QAX90/1 room units, the PPS2 interface is the RXZ90.1 receiver

10
Applications
The scope of the RXB controllers is defined by the pre-programmed application
modules.
The following is an overview of the various applications and associated controllers.
The controllers are shipped from the factory pre-programmed with a set of applications.
The required application is then enabled with a tool (ETS3, ACS or the "HandyTool").
Due to the fact that the applications are largely pre-defined, engineering simply involves
the definition of a small number of parameters, e.g.:
•2-position or 3-position control of valves and actuators (depending on application)
•Temperature setpoints
•Manual or automatic fan control
Fan coil systems (examples)
Appl. Description Controller
FNC02 Two-pipe system with change-over RXB21.1 / FC-10
FNC04 Four-pipe system RXB21.1 / FC-10
FNC08 Four-pipe system with room supply air cascade control RXB21.1 / FC-10
FNC20 Four-pipe system with control of a single damper RXB21.1 / FC-10
FNC10 Two-pipe system with change-over outside air damper RXB21.1 / FC-11
FNC12 4-pipe system with outside air damper RXB21.1 / FC-11
FNC18 Two-pipe system with change-over and radiator RXB21.1 / FC-11
FNC03 Two-pipe system with change-over and electric heater RXB22.1 / FC-12
FNC05 Four-pipe system with electric heater RXB22.1 / FC-12
Common functions
•Window contact, presence detector, four operating modes
•Manual fan control via room unit
•Automatic 3-speed fan control
•Options with two-pipe systems: Heating only, cooling only or
changeover via KNX bus
For a detailed description of the applications available, refer to the Applications library,
CM110385 und CM110672.
Chilled ceiling and radiator (example)
Appl. Description Controller
CLC01 Chilled ceiling RXB24.1 / CC-02
CLC02 Chilled ceiling and radiator RXB24.1 / CC-02
RAD01 Radiator RXB24.1 / CC-02
Common functions
•Window contact, presence detector, four operating modes
•Dew point sensor (CLC)
•Downdraft compensation (radiator)
For a detailed description of the applications available, refer to the Applications library,
CM110384 und CM110671.
01577
M T
T
Raum-Controller
01578
T
Raum-Controller