Note On Connecting Digital I/O Modules - Siemens S7-1500 Manual

5.2

Note on connecting digital I/O modules

Introduction
This section contains information on connecting digital I/O modules with
SIMATIC TOP connect.
Note
The information provided here does not apply to the 2 A output module.
For connecting the 2 A output module, please see Note on connecting the 2 A output module
(Page 41).
Using potential bridges
If you want to supply load groups with the same potential (non-isolated), use the potential
bridges provided with the front connector module. This saves you having to wire a terminal
point with two wires.
The detailed application can be found in the manual for the I/O module to be wired,
described for the front connector. You can find an overview of this documentation under
"Documentation guide (Page 9)". The procedure described in the front connector
documentation can also be followed for the front connector modules.
The potential bridges can be wired either to the front connector module or to the terminal
module.
NOTICE
High continuous current damages components.
The current must not exceed the maximum current carrying capacity of 8 A per potential
bridge.
Make sure when you wire the potential bridges that no continuous current of over 8 A per
potential bridge can occur.
Note
The potential bridges are usually inserted in the front connector module.
SIMATIC TOP connect for S7-1500 and ET200MP
Manual,
Wiring SIMATIC TOP connect to the I/O modules
5.2 Note on connecting digital I/O modules
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