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3.6

Power Supply

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The system power supply and field power supply must be powered via

SELV/PELV power supply units.

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3.6.1

Overcurrent Protection

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Possible fire hazard due to insufficient overcurrent protection!

In the event of a fault, insufficient overcurrent protection can present a possible

fire hazard. In the event of a fault, excessive current flow in the components can

cause significant overheating. Therefore, you should always dimension the

overcurrent protection according to the anticipated power usage.

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The system and field voltage of the WAGO I/O SYSTEMs 750 XTR is supplied on

the head stations and bus supply modules.

For components that work with extra low voltage, only SELV/PELV voltage

sources should be used.

A single voltage source supplying multiple components must be designed

according to the component with the strictest electrical safety requirements.

For components which are only allowed to be supplied by SELV voltage sources,

these requirements are listed in the technical data.

Most components in the WAGO-I/O-SYSTEM 750 XTR have no internal

overcurrent protection. Therefore, appropriate overcurrent production must

always be implemented externally for the power supply to these components,

e.g. via fuses.

The maximum permissible current is listed in the technical data of the

components used.

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System supply only with appropriate fuse protection!

Without overcurrent protection, the electronics can be damaged.

If you implement the overcurrent protection for the system supply with a fuse, a

fuse, max. 2 A, slow-acting, should be used.

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Field supply only with appropriate fuse protection!

Without overcurrent protection, the electronics can be damaged.

If you alternatively implement the overcurrent protection for the field supply with

an external fuse, a 10 A fuse should be used.

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Manual

Version 1.3.0

WAGO-I/O-SYSTEM 750 XTR

750-352/040-000 FC ETHERNET G3 XTR

Table of Contents