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Siemens
PXC3.E... Room automation stations
CM1N9203en_05
Building Technologies
2015-11-23
Island bus interface
Communications
Interface type
Siemens specific protocol
DC output
Nominal voltage
DC 24V
Max. current
600 mA
(sufficient for typically 8 TX-I/O modules)
Parallel switchable with 3 supply
modules TXS1.12F10
For details, see: TX-I/O planning and
installation manual, CM110562)
Short-circuit proof, overload-proof
Self-resetting
Protection
Short-circuit proof
Island bus connector on
side
Protection against faulty wiring with
AC 24 V
No electric protection.
Use the terminal cover.
KNX PL-Link interface
Communications
Interface type
KNX, galvanically separated
Transceiver
TP-UART
Baud rate
9.6 kbps
Bus power supply
Nominal voltage
DC 29 V
Max. supply
Note: for devices with higher power
requirement, use the output AC 24 V
2 A, see above.
160 mA for max 32 devices with KNX
PL-Link. Default: Auto detection; must
be turned off via ABT if external bus
supply is used.
Up to 64 devices with KNX PL-Link can
be operated using one or two external
bus supplies.
Protection
Short-circuit proof
Protection against miswiring up to AC 24 V
DALI interface
Communications
Interface type
DALI, galvanically separated
Baud rate
1.2 kBit/s
Insulation strength
Reinforced insulation for 230 V (1.5 kV)
Suitable for installations in overvoltage
category III (4 kV).
Bus power supply
Nominal voltage
DC 16 V
Max. current
128 mA for max 64 DALI devices
Protection
Short-circuit proof
Upon power-on, AC 230 V bus voltage is
recognized on terminals DA+ and DA–.
NO protection against miswiring with AC 24 V or AC 230 V:
Voltage between DA+ / DA+ or between DA– / DA– will destroy the DALI PCB!
Wiring, topology, cable
length, cross section
See installation manual TRA, CM111043.
Connection terminals,
plug-in
Construction type
Copper-wire or Cu-strand
with wire end sleeve
Copper-strand without
wire end sleeve
Pluggable screw terminals
1 x 0.6 mm dia. to 2.5 mm
2
(22 to 14 AWG)
or 2 x 0.6 mm dia. to 1,0 mm
2
(22 to 18 AWG)
1 x 0.6 mm dia. to 2.5 mm
2
(22 to 14 AWG)
or 2 x 0.6 mm
∅
to 1.5 mm
2
(22 to 16 AWG)
Screwdriver
Slot screws
Screwdriver, size 1
Max. tightening torque
0.6 Nm (0.44 lb-ft)
