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Note
Protective ground
A PELV circuit contains a connection to protective ground. Without a connection to protective
ground, or in case there is a fault in the connection to the protective ground, the voltage for the
circuit is not stabilized.
Note
Minimum temperature rating of the cable to be connected to the field wiring terminals, 90 °C.
Safety notices on use in hazardous areas
General safety notices relating to protection against explosion
WARNING
EXPLOSION HAZARD
Do not press the SET button if there is a potentially explosive atmosphere.
WARNING
EXPLOSION HAZARD
Do not connect or disconnect cables to or from the device when a flammable or combustible
atmosphere is present.
WARNING
Unsuitable cables or connectors
Risk of explosion in hazardous areas
• Only use connectors that meet the requirements of the relevant type of protection.
• If necessary, tighten the connector screw connections, device fastening screws, grounding
screws, etc. according to the specified torques.
• Close unused cable openings for electrical connections.
• Check the cables for a tight fit after installation.
Connecting up
5.1 Safety when connecting up
SCALANCE M826
42
Operating Instructions, 10/2022, C79000-G8976-C362-07
Summary of Contents for SCALANCE M812
Page 10: ...Safety notices SCALANCE M826 10 Operating Instructions 10 2022 C79000 G8976 C362 07 ...
Page 58: ...Maintenance and cleaning SCALANCE M826 58 Operating Instructions 10 2022 C79000 G8976 C362 07 ...
Page 62: ...Technical specifications SCALANCE M826 62 Operating Instructions 10 2022 C79000 G8976 C362 07 ...