Connecting Signal And Supply Cables; Wiring The Terminal Block For Ex I/O Module - Siemens SIMATIC ET 200SP HA System Manual

Wiring

6.2 Connecting signal and supply cables

6.2 Connecting signal and supply cables
6.2.1

Wiring the terminal block for Ex I/O module

The terminal block for connecting the I/O signals is part of the Ex BaseUnit for Ex I/O modules and
cannot be mounted separately.
Connections on the slot and I/O module
The following figure shows the connections on the Ex BaseUnit and the I/O module.
Ex I/O module slot
1- n
1)
2)
3)
You can find additional information on the pin assignment of the I/O module (terminal block) in
the documentation of the I/O module.
64
X2
Ex BaseUnit:
- Contacts of the backplane bus 1)
X3
Ex BaseUnit:
- Contacts of the Ex I/O module 2)
Ex BaseUnit:
- Terminal block: n process terminals 3)
Ex BaseUnit contacts of the backplane bus (max. 50 mA; 3.3 V DC
Ex BaseUnit contacts for process signal transmission (for maximum voltages and currents, refer to
the documentation of the respective I/O module)
Process terminals on the terminal block (number, maximum/permissible voltages and currents,
refer to the documentation of the respective I/O module).
Connector side of the Ex I/O module
System Manual, 04/2021, A5E50165138-AA
)
Modules for devices in a hazardous area