Electrical Structure; Potential Groups - WAGO 750 XTR Series System Manual

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750 XTR Series

3.2 Electrical Structure

The I/O system is divided into the following potential groups.

• System Level

This potential group encompasses all the system-side electronics and among other

things, includes the system supply and the local bus signals.

• Field Level

This potential group contains the field-side power supply and I/O signals. The node

structure can be divided into different sections through the supply and segment mod-

ules. Different field potentials can be used in the individual sections.

• Fieldbus

This potential group contains the signals of the respective fieldbus interface. The volt-

age and current levels depend on the fieldbus standard used.

• Functional Ground

To discharge EMC interference, the system power supply, the field power supply and

the I/O signal inputs and outputs are capacitively coupled within the module to the

functional ground via the DIN-rail contacts.

Example Potential Groups / Separation with Galvanically Separated Power Supply

Infeed

System manual | Version: 2.0.0

System-level potential groups

Field-level potential groups in right node section

Field-level potential groups in left node section

Fieldbus system potential groups

System Features

Figure 12: Display of Different Potential Groups

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