Mechanical Safety; Thermal Safety; Indirect Safety - WAGO 750 Series Manual

Serie 750, 753
• In systems operated within the scope of UL, only use UL-approved fuses.
Cables
• To minimize interference (e.g., by electromagnetic interference), maintain a spatial
separation between control, signal and data lines and the power supply lines.
• SELV/PELV circuits must be safely disconnected from circuits with hazardous active
voltage or all connecting cables must be designed for the maximum current load.
• The conductor cross-sections specified in the product manual refer exclusively to the
mechanical connection capacity of the clamping points. Always use connecting cables
designed for the maximum current load.
• Additional heat can be produced at the clamping point by high currents and inherent
heat generated by the product. Plan a higher tenmperature range for the conductors,
or reduce inherent heat by selecting larger conductor cross-sections.
• Only one conductor may be connected to each connection point (e.g., CAGE CLAMP
connection).
Protection
• When working on the system (e.g., during maintenance), protect the facility part in
question from accidental or unauthorized restart.

2.3 Mechanical Safety

• Before start-up, check the product for any damage that may have occurred during ship-
ping. Do not put the product into operation if there is any mechanical damage.
• Do not open the product housing.
• Do not touch the power jumper contacts.
• Avoid conductive contamination.

2.4 Thermal Safety

• The temperature inside the additional enclosure must not exceed the surrounding air
temperature permitted for the mounted products.

2.5 Indirect Safety

• Do not use any contact spray for cleaning.
• Clean product housings and soiled contacts with propanol.
• The products are not resistant to materials having seeping and insulating properties
such as aerosols, silicones and triglycerides (found in some hand creams). If these
substances occur in the environment of the products, install the products in an addi-
tional housing that is also resistant to these substances.
• Replace any defective or damaged devices.
• Do not place products on the data or power jumper contacts.
• If product fails, communication to downstream products may be interrupted.
• Products from the WAGO I/O System 750/753 can be operated in combination with
those of the WAGO I/O System 750 XTR. For combined operation, take the specifica-
tions for the ambient conditions for both I/O Systems into account.
• Operate ETHERNET and PROFINET interfaces in separate networks.
• Only use accessories authorized by WAGO.
System manual | Version: 3.3.1
Safety
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