System overview
3.10 Connection elements and system cabling
Automation system
System Manual, 12/2017, A5E03461182-AE
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3.10
Connection elements and system cabling
Front connector and shield contact
The front connectors are used to wire the I/O modules. For modules with EMC-critical
signals, such as analog modules and technology modules, the front connectors also need a
shield contact.
The front connectors are available for 35 mm modules optionally with screw terminals and
push-in terminals and for 25 mm modules with push-in terminals. The front connectors for
25 mm modules are included in the scope of delivery of the I/O modules.
24 V DC is supplied, for example, via a plug-in infeed element for analog modules.
The shield contact consists of shield bracket and shield terminal. Together with the shield
terminal, the shield bracket allows the low-impedance, module-level connection of cable
shields with minimum installation times. The shielding takes place without tools.
The components (infeed element, shielding bracket and shield clamp) are included in the
scope of delivery of the modules.
Front connector 35 mm with screw terminals
Front connector 35 mm with push-in terminals
Front connector 25 mm with push-in terminals
Front connector
Shield bracket
Shield terminal
Figure 3-23 Versions of the front connector with and without shield
U connector
The individual modules are connected to one another with the U connector. The U connector
establishes the mechanical and electrical connection between the modules. The U
connectors are included in the scope of delivery of the I/O modules.
Summary of Contents for Simatic S7-1500/ET 200MP
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