User Manual
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Siemens RXC20, RXC21, RXC22 – Room controllers CA2N3834en_12
Building Technologies 2015-12-23
Connection terminals
1 2 3 4 5 6 7 8 9 13 14 15 16 17 18
M
D1
GND
D2
Y1
G
Y2
G
CP–
CP+
CLA
CLB
B1
CLA
CLB
12 3 4
QAX...
T
M
25 26 27 28
Q13
Q14
AC 230 V
Q24
Q34
5(4) A
22 23
24
N.C.
Q44
10 A
19 19 21
N
L
N
21
L
Q43
3804A04
LonWorks®
Bus
Measured value input
B1
1
Measured value input with LG-Ni 1000 sensor
M
2
Measured value input ground
Signal inputs
D1
3
Signal input
GND
4
Signal ground
D2
5
Signal input
Triac outputs
Y1
6
AC 24 V, 0.5 A switching output
G
7
AC 24 V actuator supply
Y2
8
AC 24 V, 0.5 A switching output
G
9
AC 24 V actuator supply
Room unit
CP–
13
PPS2 ground
CP+
14
PPS2 data
CLA
15
Data A
CLB
16
Data B
LONWORKS® bus (plug-in)
CLA
17
Data A
CLB
18
Data B
Power supply
N
19
Neutral conductor
L
21
Phase line AC 230 V +/- 10 %
Relay outputs
Q13
25
Common feed for Q14, Q24 and Q34
Q14
26
N/O contact AC max. 250 V, 5 (4) A (stage 1)
Q24
27
N/O contact AC max. 250 V, 5 (4) A (stage 2)
Q34
28
N/O contact AC max. 250 V, 5 (4) A (stage 3)
22
Not connected!
Q43
23
Feed for Q44
Q44
24
N/O contact AC max. 250 V, 10 A (electric heating coil)
• Observe the technical data for the relay outputs:
Max. AC 250 V, 5 (4) A and 10 A, respectively
• Local installation regulations must be observed.
Standard RJ45 tool socket for L
ONWORKS® devices.
1
3206Z01
2 3 4 5 6 7 8
1 L
ON
W
ORKS
®, Data A (CLA)
2 LONWORKS®, Data B (CLB)
3 Unoccupied
4 Unoccupied
5 Unoccupied
6 unoccupied
7 PPS2 (CP+)
8 PPS2 (CP–)
RXC22
STOP
Note!
Tool socket