Siemens Desigo TRA Engineering, Mounting And Installation Manual page 27

Basic circuit diagram
(connections AC 24 V,
fusing)
Secure operation
Note!
s
Communications
Note!
STOP
Siemens
Building Technologies
1 2 3
+ ~
KNX 2) 24V/2A
KNX
Island bus
DALI
DALI 3)
+
12
9 10 11
1), 2) Not with PXC3.E16A-100A
3) Only with PXC3.E...A... types
The next device has no AC 24 V power when a room automation station is
removed. The connection exists only on the board, but not on the terminal block.
Without AC 24 V, the internal Ethernet switch of the room automation station is
inactive. The next devices, if in line topology, are disconnected from the network.
For secure operation of the system it is recommended to supply each
room automation station separately with AC 24 V.
Island bus: If a TXS1.12F10 supply module is connected to output
(terminals 7 and 8), do not invert ~ and .
The devices are not damaged but island bus communications will not work.
USB: If USB communications do not work, this is an indicator that the AC 24 V
operating voltage is incorrectly wired (conductors ~ and
inverted).
Desigo TRA Engineering, mounting and installation
Wiring of power lines
4
5 6
~
24V~
PTC
7 8
~
24V~
CS
V~
T 10A
Island
Bus 1)
24 V
, terminals 5 and 6
CM111043en_09
2016-02-22
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