Mounting
5.1 Safety notices for installation
SCALANCE W778-1 /W738-1
30
Operating Instructions, 07/2020, C79000-G8976-C450-06
WARNING
The device may only be operated in an environment with pollution degree 1 or 2 (see
IEC 60664-1).
WARNING
When used in hazardous environments corresponding to Class I, Division 2 or Class I,
Zone 2, the device must be installed in a cabinet or a suitable enclosure.
General notes on use according to ATEX and IECEx
WARNING
Requirements for the cabinet/enclosure
To comply with EC Directive 2014/34 EU (ATEX 114) or the conditions of IECEx, this
enclosure or cabinet must meet the requirements of at least IP54 (in compliance with
EN 60529) according to EN 60079-7.
Safety notices when using according to FM
If you use the device under FM conditions you must also keep to the following safety
notices in addition to the general safety notices for protection against explosion:
WARNING
EXPLOSION HAZARD
The equipment is intended to be installed within an enclosure/control cabinet. The
inner service temperature of the enclosure/control cabinet corresponds to the ambient
temperature of the module. Use installation wiring connections with admitted maximum
operating temperature of at least 10 °C higher than maximum ambient temperature.
WARNING
Wall mounting is only permitted if the requirements for the housing, the installation
regulations, the clearance and separating regulations for the control cabinets or
housings are adhered to. The control cabinet cover or housing must be secured so that
it can only be opened with a tool. An appropriate strain-relief assembly for the cable
must be used.