Siemens RXB39.1 User manual

CM2N3875en_04
2013-06-16 Building Technologies
s3875
RXB
Room controller RXB39.1
Communicating room controller
for fan-coil applications FC-13
The RXB39.1 room controller is used for temperature control in individual
rooms.
For 2-pipe or 4-pipe fan-coil systems, with or without change-over
ECM fan support
PI control
KNX bus communication
Integration into the Desigo building automation and control system via
PX KNX
DC 0…10 V control of valve actuators, fan, and electric heating coil
Volt-free relay contacts for release of the fan and the electric heating coil
Commissioning with ETS Professional, "HandyTool" or Synco ACS
AC 230 V operating voltage
Pluggable screw terminals

2 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
Use
The RXB39.1 room controller is optimized for control of fan-coil systems in
individual rooms.
The function of each controller is determined by the application software.
The controllers are delivered with a fixed set of applications. The relevant
application is selected and activated during commissioning using one of the
following tools:
ETS Professional
"HandyTool" (the QAX34.3 room unit includes a tool function which allows you to
set the parameters of the connected RXB controller)
Synco ACS
Functions
The room controller functions are determined by the selected application, its
parameters, and by the input/output configuration.
For details, refer to the FNC description of functions, document CM110788.
When RXB controllers are integrated into a building automation and control
system, or into a Synco system, additional functions become available such as
time scheduling, central control of setpoints, etc.
Applications
The following applications are available for the RXB39.1 room controller:
Application group (type) Fan-coil applications
FC-13 ECM fan application
Only one application at a time can be activated with the tool (ETS Professional,
"HandyTool" or Synco ACS).
Ordering
Equipment combinations
The RXB39.1 room controller is compatible with field devices from Siemens
Building Technologies.
For details, refer to the Desigo RX hardware overview, CA2N3804.
Note
Product number Stock number Designation
RXB39.1/FC-13 S55373-C121 Room controller

3 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
Technical design
The RXB39.1 controller consists of a housing base, a housing cover and the
printed circuit board with connection terminals. The room controller also has a tool
socket, a service LED and a programming button.
Plug-in connection terminals
Cover
Plug-in connection terminals
80048
Cable restraints
Plug-in connection terminals
for KNX bus
Housing base
Service LED
Programming button
Tool socket
The Service LED shows the operational status of the room controller as follows:
Green, flashing Normal operation.
Red, ON Programming mode for address assignment (ETS / ACS).
Fault
Orange / green,
flashing
Startup phase.
No application selected.
Loading.
Download from ACS.
Room unit QAX34.3 in HandyTool mode.
OFF No supply voltage
Fault
Other patterns After switching on the operating voltage, the service LED
flashes in different patterns for 3 to 5 seconds.
If other patterns appear during normal operation, this indicates
an error.
The programming button is used to identify the room controller in the
commissioning phase.
Pressing this button causes the red service LED to light up and remain on until
identification of the controller is complete.
Once the programming button has been pressed, the tool overwrites the hardware
address in the room controller.
If there are no terminal covers fitted, the programming button may be operated
only by a qualified electrician.
The adjacent terminal may be a live mains voltage conductor.
Service LED
Programming button
Terminal cover

4 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
Terminal covers (RXZ30.1) are available as an option, to protect the connection
terminals from physical contact and dirt. The service LED remains visible when the
terminal covers are in place, and the programming button can be operated with a
pointed implement. The cable is connected to the room controller by breaking out
the perforated cable entry guide.
80049
Removing the terminal cover
Bar code, Code 39
(ID number)
Protection standard
Temperature range
(0 … 50 °C)
Test date, series
(Z, A, B, C…)
Serial No.
Observe the warning
notes in this data sheet
Identification number
(unique serial number)
3
Definitively loaded
application
Location
Options for use of the labeling fields “Appl.” and “Loc.”:
Handwritten identification of the location and the activated application group.
All connection terminals are detachable plug-in screw-terminals.
To avoid incorrect wiring, terminals which can be connected to AC 230 V (relay
outputs) are physically separated from the other terminals.
STOP Note!
Warning!
The cable restraints on the housing base must be used
for the connections to terminals 19 ... 27 (AC 230 V).
The conductors must be secured with cable ties (see
diagram).
Ensure that the power is off before inserting or
removing plug-in terminals connected to a mains
voltage.
3873J04
Label
Note
Connection terminals

5 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
The RXB39.1 room controller communicates with other devices via the following
interfaces:
PPS2 interface (proprietary) for the exchange of data with the room units
KNX bus (terminals CE+ and CE-) for communication with:
PX/KNX interface (to Desigo Insight)
Interface OCI700 (to Synco)
Other RXB controllers
Other KNX devices (e.g. field devices)
To facilitate commissioning, the tools ETS / ACS can be connected at three diffe-
rent points (marked (A) in the diagram) in the plant:
to the KNX bus cable at any point
to the RXB39.1 controller (RJ45 tool socket)
to the room unit (RJ45 tool socket)
A
A
A
A
B
B
A
B
The tool socket is a proprietary socket.
A Siemens connecting cable must be used (e.g. PXA-C1).
When connected to Ethernet, the device on the other end may be damaged!
The tools ETS and ACS, even if connected to a tool socket, require an interface:
RS232-KNX interface (ETS)
USB-KNX / EIB interface OCI700 (ETS, ACS).
The "HandyTool" is connected to the tool socket of the room controller or to the
tool socket of the room unit (QAX…, RXZ90.1) (B).
If you use OCI700 as an interface, it is connected to the service plug of the
controller or of the room unit.
As long as the OCI700 is connected to the service plug, it must be sup-
plied by the computer via the USB interface. Otherwise the LCD display of
the room unit will turn dark and the controller will switch to addressing mode.
Communication
Connecting the tool
Notes
Caution!

6 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
Disposal
The device is classified as waste electronic equipment in terms of the European
Directive 2002/96/EC (WEEE) and should not be disposed of as unsorted
municipal waste.
The relevant national legal rules are to be adhered to.
Regarding disposal, use the systems setup for collecting electronic waste.
Observe all local and applicable laws.
Engineering
Topology Tree, line, or star
NO closed loops
Cable length Max. 1000 m (sum of all cables of a line
(for details refer to document CM110381)
Cable type E.g. YCYM 2 x 2 x 0.8 mm
Number of RXB Controllers per
Network
Max. 45
Bus supply Up to 45 RXB-controllers:
5WG1 125-1AB12
Bus terminator Not required
The RXB39.1 room controller operates with a mains supply voltage of AC 230 V.
The sizing and fuse protection of the power supply cables depend on the total
load and on local regulations.
If serial wiring is applied on the terminal block L / N, the connection will be inter-
rupted if the block is removed from the controller (the jumpers 19-19 and 21-21
are on the PCB, not in the block, see terminal diagrams on page 10)
Different phases may be connected to the terminals 21 (L), 23 (Q13) and
26 (Q33).
All AC 230 V conductors must be secured with cable ties.
The volt-free releasing relay output for the fan allows the switching of a load up
to AC 250 V, 5(4) A.
The volt-free releasing relay output for the heating coil switches a resistive load
up to 1.8 kW, max. 10 A.
The circuits must be externally fused (10 A) as there are no internal fuses.
The cables connected to the room controller must be secured with cable ties.
The DC 0 … 10 V control outputs YC1, YC2 deliver max 1.5 mA.
The AC 24 V supply output G (next to YC2) delivers max. 6 VA.
The DC 0 … 10 V control output YC3 delivers max 1.5 mA.
The controlled devices (valve and damper actuators) receive their power directly
from the room controller. This means that a separate AC 24 V supply is only
necessary for the field devices require more than a total of 6 VA.
KNX bus
AC 230 V
supply cables
Volt-free
relay outputs
AC 230 V
DC 0...10 V outputs
– Valve actuators
– Fan control
AC 24 V supply for
field devices (G)

7 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
Mounting
The room controllers can be mounted in any orientation, and fixed as follows:
80060
80061
Rail mounting
The housing base is designed for snap-
mounting on DIN rails, type EN50022-
35x7.5 (can be released with a screw-
driver)
Surface mounting
There are four drill holes for screw-
mounting (see “Dimensions” for drilling
template). The housing base is fitted with
raised supports.
When mounting note the following:
The controller should not be freely accessible after mounting. It must be mounted
in a cabinet or behind a cover that can only be opened / removed with a key or a
tool.
Ensure adequate air circulation to dissipate heat generated during operation.
Easy access is required for service personnel
Local installation regulations must be observed.
Mounting instructions and a drilling template are printed on the controller packaging.
Commissioning
The RXB39.1 room controller is commissioned with one of the following tools:
ETS Professional
Synco ACS
"HandyTool" via PPS2
The definitive application and the controller's location are handwritten in the
labeling fields "Appl." and "Loc" in the commissioning stage.
A special test mode (ETS and HandyTool) is available for operation of the outputs
and interrogation of the inputs.
Labeling
Function test

8 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
Technical data
Power supply Operating voltage
A
C 230 V +/-10 %
Rated voltage
A
C 230 V
Frequency 50/60 Hz
Power consumption with connected field devices Max. 12 VA
Internal fuse Thermal, non-resetting
Operating data Control algorithm PI
Inputs (SELV)
Signal inputs D1 … D4 Quantity 4
(for volt-free contacts) Contact voltage DC 16 V
Contact current DC 5 mA
Contact transfer resistance Max. 100 
Contact insulation resistance Min. 50 k
Switch time: min. 20ms “ON”, min. 20ms “OFF”
Measured value input B1 Compatible temperature sensors LG-Ni 1000
Quantity 2
Measuring range 0 … 50 °C
Sensor current 0.5 mA
Resolution 0.1 K
Measuring error at 25 °C sensor temp. (without cable) max. 0.5 K
Outputs (SELV)
DC 0 … 10 V YC1, YC2, YC3 Quantity 3
Resolution 3 mV
A
ccuracy 100 mV
Output current Max. 1.5 mA
Supply output G (SELV) Voltage / Max. load
A
C 24 V / Max. 6 VA
Relay outputs
Q34 (fan release) Quantity 1 (N/O contact)
Relay type Monostable
Contact rating with AC voltage
Switching voltage Max. AC 250 V, min. AC 19 V
Nominal current, resistive/inductive Max. AC 5(4) A (cos = 0.6)
Making current 200 ms half-time Max. 20 A
Switching current at AC 19 V Min. AC 10 mA
Contact rating with DC voltage
Switching voltage Max. DC 250 V, min. DC 5 V
Switching current at DC 5 V Min. DC 100 mA
Switching capacity Max. 20 W
Inductive load L/R Max. 7 ms
External fuse (essential!) Max. 10 A
Q14 (heater release) Quantity 1 (N/O contact)
Relay type Monostable
Contact rating with AC voltage
Max. admissible load (resistive only) Max. 1.8 kW
External fuse (essential) Max. 10 A
Ports/interfaces
Interface to room unit Number of room units connectable 1
Interface type for room unit
for ETS / ACS
PPS2
KNX bus
PPS2 baud rate 4.8 kbit/s
Baud rate on the KNX bus 9.6 kbit/s
KNX bus Interface type Electrically isolated
Bus current 5 mA
Baud rate bus 9.6 kbit/s
Bus topology Refer to Engineering, page 6

9 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
Cable connections Connection terminals for signals and power supply Solid or stranded conductors
0.25 … 2.5 mm2
or 2 x 1.5 mm2
KNX bus connection terminals Solid or stranded conductors 2 x max. 1.0 mm2
e.g. YCYM 2x2x0.8
Single cable lengths For field devices, see also the RXB / RXL
installation guide, CA110381
Signal inputs D1 … D4 Max. 100 m with diameters 0.6 mm
Measured value input B1, B2 Max. 100 m
0 … 10 V outputs YC1, YC2 (valve actuators) Max. 100 m where A 1.5 mm2
0 … 10 V outputs YC3 (fan) Max. 100 m where A 1.5 mm2
Relay outputs Q14, Q34 Depends on load and local regulations
Interface to room unit Max. 115 m where A= 0.75 mm2
(including connecting cable for tool)
Cable type 4-core, twisted pair, unscreened
KNX bus Max. 1000 m (see Engineering, page 6)
Tool connecting cable Max. 3 m
Housing
protection standard
Protection standard to EN 60529 IP30 with terminal cover fitted and
wall mounted without DIN rail
IP20 for all other mounting arrangements
Protection class Suitable for use in systems with protection class I or II
Ambient conditions Normal operation Class 3K5 to IEC 60721-3-3
Temperature 0 … 50 °C
Humidity < 85 % r.h.
Transport Class 2K3 to IEC 60721-3-2
Temperature – 25 … 65 °C
Humidity < 95 % r.h.
Industry standards - Product standards EN 60730
marking
- EMC
Immunity (industrial & residential)
Emission (residential)
2004/108/EG
EN 60730-1, EN 50491-5-2, EN 50491-5-3
EN 60730-1, EN 50491-5-2
- Low Voltage Directive
Electrical safety
2006/95/EC
EN 60730-1
- RoHS
Techn. RoHS proof
2011/65/EU
EN 50581
C-Tick conformity (EMC)
A
S/NZS 61000-6-3
Environmental compatibility The product environmental declaration CM1E3876
contains data on RoHS compliance, materials
composition, packaging, environmental benefit,
disposal
ISO 14001 (Environment)
ISO 9001 (Quality)
Dimensions See dimension diagrams
Weight excluding packaging 0.560 kg
including packaging 0.600 kg

10 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
Connection terminals
CP – CP + CE –
CE +
3875A08
12345678910111213141516 1718
M D1 GND D2 B1
KNX
1243
QAX...
T
23 24 25 26
Q13
Q14
AC 230 V
Q33
5(4) A
19 19 21
N L N
21
L
CE –
CE +
B2
Ni1000
29 30 31 32
D3 GND D4 N.C. YC1 G0 G YC2 G0 YC3
0 ... 10 V
AC 24 V
0 ... 10 V 0 ... 10 V
27
Q34 N.C.
24 ... 230 V
10 A
Measured value input
B1 1 Measured value input for LG-Ni 1000 sensors
M 2 Measured value input ground
B2 3 Measured value input for LG-Ni 1000 sensors
Signal inputs
D1 4 Signal input
GND 5 Signal ground
D2 6 Signal input
D3 7 Signal input
GND 8 Signal ground
D4 9 Signal input
N.C. 10 Do not use this terminal as an auxiliary terminal!
0 … 10 V outputs
YC1 11 0 … 10 V Heating control signal
G0 12 Signal ground
G 13 AC 24 V max. 6 VA
YC2 14 0 … 10 V Cooling control signal (heating / cooling in case of changeover)
G0 15 Signal ground
YC3 16 0 … 10 V Fan control signal
KNX bus
CE+ 17 KNX bus
CE– 18 KNX bus
Power supply
N 19 Neutral conductor
L 21 Phase conductor AC 230 V +/- 10 %
Relay outputs
Q13 23 Feed for Q14
Q14 24 Normally-open contact, max. AC 250 V, 1.8 kW, max. 10 A (Electric heating)
Q33 26 Feed for Q34
Q34 27 Normally-open contact, max. AC 250 V, 5(4) A (controlled fan)
Room unit
CP– 29 PPS2 ground
CP+ 30 PPS2 data
CE+ 31 KNX bus
CE– 32 KNX bus
Observe the technical data for the relay outputs: max. AC 250 V, 5 (4) A
External fuse (essential!): max. 10 A
Local installation regulations must be observed.
Proprietary RJ45-type tool socket
1
3206Z01
2345678
1 KNX bus (CE+)
2 KNX bus (CE–)
3 Not used
4 Not used
5 +12VDC
6 RxD
7 PPS2 (CP+) / TxD
8 PPS2 (CP–)
Caution
Tool socket

11 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
Connection diagrams
G0
G
G0
G
N1 RXB39.1
B1, B2 LG-Ni 1000 temperature sensor
D1 … D4 Volt-free contacts (window contact, occupancy sensor, etc.)
Y1 0 … 10 V valve actuator heating
Y2 0 … 10 V valve actuator cooling (heating / cooling in case of changeover)
Q1 Controlled fan
Q2 Power controller (PWM or modulating)
e.g. SEM61.4 + SEA45.1, data sheets N5102, N4937
Q3 Electric heating
B3 QAX… room unit
Twisted pair
For Q2 (1.8 kW max. resistive load), use additional external fuses of max.
10 A to protect the PCB tracks.
For information on the compatibility of field devices with the RXB39.1 room
controller, refer to the RX hardware overview, CA2N3804.
Connection of
field devices, room
unit, KNX bus and
power supply
Note

12 / 12
Siemens RXB39.1 – Room controller CM2N3875en_04
Building Technologies 2013-06-16
Dimensions
Dimensions in mm
62
35,3
90
3876M01
1
3,9
110
62 1
3,9
35,3
3876M02 120
152
50
6
161
100
135
80056
Without terminal
covers
With terminal covers
Drilling diagram
2012 - 2013 Siemens Switzerland Ltd Sub
j
ect to chan
g
e