Installation
4.1 Safety notices for installation
SCALANCE XR-300WG
Operating Instructions, 05/2017, C79000-G8976-C454-01
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Do not disconnect equipment when a flammable or combustible atmosphere is present.
For operation the device is intended to be installed within an enclosure/control cabinet. The
inner temperature of the enclosure/control cabinet corresponds to the ambient temperature
of the device. Use installation wiring connections with admitted maximum operating
temperature of at least 30 °C higher than maximum ambient temperature.
Note
You must not install the device on a wall in hazardous areas.
Safety notices when using the device as industrial control equipment according to UL 61010-
2-201
If you use the device under UL 61010-2-201 conditions you must also keep to the following
safety notices in addition to the general safety notices for protection against explosion:
The devices are "open equipment" acc. to the standard UL 61010-2-201. To fulfill
requirements for safe operation with regard to mechanical stability, flame retardation,
stability, and protection against contact, the following alternative types of installation are
specified:
• Installation in a suitable cabinet.
• Installation in a suitable enclosure.
• Installation in a suitably equipped, enclosed control room.
If the cable or housing socket exceeds 70 °C or the branching point of the cables exceeds
60 °C, special precautions must be taken. If the equipment is operated in an air ambient in
excess of 40 °C, only use cables with admitted maximum operating temperature of at least
80 ℃.
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