Siemens SIMATIC ET 200SP HA, System Manual

Page: 86 / 186

6.5 Wiring the terminal block
Connection on the slot and I/O module
The following figure shows the connections on the terminal block/terminal module and the I/O
module.
Terminal block
Carrier module contact of the backplane bus 1)
Terminal block contact of the I/O module 2)
Slot of the I/O module
n process terminal 3)
Supply of the I/O module
Plug side of the I/O module
X2
X3
1- n
1
) Carrier module contact (max. 50 mA; max. 3.5V DC )
2
) For the terminal block contacts (for maximum voltages and currents, refer to the documentation of
the respective I/O module)
3
) For the process terminal on the terminal block (number, maximum/permissible voltages and cur‐
rents, refer to the documentation of the respective I/O module).
You can find additional information on the pin assignment of the I/O module (terminal block) in
the documentation of the I/O module.
Introduction
The following terminals are located on the terminal blocks.
● Terminals for the supply voltage
– Light-colored terminal block:
Only connect the supply voltage to a terminal block of the type TB..D.
– Dark-colored terminal block: Measure the supply voltage and extend it if necessary
● Process terminals
– The signal lines of sensors and actuators must be connected to the process terminals on
the terminal block.
Wiring
6.5 Wiring the terminal block
ET 200SP HA Distributed I/O system
86
System Manual, 08/2019, A5E39261167-AD