User Manual

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Siemens RXC39.5 – Room controller CM2N3856en_07
Building Technologies 2015-12-23
• Observe the technical data for the relay outputs: max. AC 250 V, 1.8 KW
• External fuse (essential!): max. 10 A
• Local installation regulations must be observed.
Proprietary RJ45-type tool socket
1
3206Z01
2
3
4 5
6 7
8
1 LonWorks®, Data A (CLA)
2 LonWorks®, Data B (CLB)
3 Not used
4 Not used
5 Not used
6 Not used
7 CP+
8 CP–
Connection diagram
Connection of field devices, room unit, bus and power supply
N1
RXC39.5
B1, B2
LG-Ni 1000 temperature sensor
B1.1
Air quality sensor (DC 0...10 V)
D1...D4 Volt-free contacts
(window contact, occupancy sensor, etc.)
R1
QAX… room unit
Q1, Q2
AC 230 V loads
Y01,
Y02
Thermal actuators
Y1...Y4
Motorized AC 24 V actuators
Twisted pair
STOP
Note!
For Q1, Q2, use external fuses of max.
10 A to protect the PCB tracks.
Notes • Do not exceed the maximum
simultaneous load on outputs Y1, Y2
(see “Engineering”).
• A power amplifier may be used to
connect additional valve actuators to
Y1 and Y2 (see Desigo RXC
installation guide, CA110334).
• For information on actuators compatible
with the RXC39.5 controller, refer to the
RX Hardware overview, N3804).
• The AC 24 V supply (G) for devices
such as the DC 0 …10 V damper
actuators, can be derived either from
the controller or from an external
source (see Desigo RXC installation
guide CA110334). If the connected
devices receive their supply from the
controller the power consumption of
these devices must be taken into
account when sizing the transformer.
Caution
Tool socket