User Manual

14 / 86
Siemens Desigo Room automation - Engineering, mounting and installation CM111043en_14
Smart Infrastructure Installation – overview 2020-10-30
4 Installation – overview
4.1 PXC3...
The illustration is a diagram of a PXC3 room automation station in an installation
box / panel, the TX-I/O modules, connections to the field devices as well as bus
connections (Ethernet, KNX, DALI).. Insert
Element
Description
Details see section
/ document
T1 Transformer AC 24 V à transformer sizing 6.3.3
AC 24 V Wiring of power lines and island bus 6.3.1
N1 PXC3... room automation station. [8]
U1, U3 TXS1.EF10Bus connection modules [8]
U2 I/O row, supplied by the PXC3... [8]
U4 I/O row supplied by a TXS1.EF10Bus connection
module
[8]
U5 TXA1.IBE Island bus expansion module (optional) [8]
-- Electrical properties of inputs and outputs 8
-- Power supply for field devices 6.4
-- Wiring of field devices 7
Ethernet 9
KNX PL-Link 13
DALI 14
Island bus
AC 24 V
M
Installation box /
cabinet
DALI
KNX
PL-Link
Ethernet
MS/TP
24 V