Siemens SIMATIC NET SCALANCE W M766 Series Operating Instructions Manual page 34

Mounting
EXPLOSION HAZARD
Replacing components may impair suitability for Class 1, Division 2 or Zone 2.
General notes on use according to ATEX and IECEx
To comply with EU Directive 2014/34 EU (ATEX 114), UK-Regulation SI 2016/1107 or the
conditions of IECEx or CCC-Ex, the housing or cabinet must meet the requirements of at least
IP54 (according to EN/IEC 60529, GB/T 4208) in compliance with EN IEC/IEC 60079‑7, GB
3836.8.
The equipment shall only be used in an area of not more than pollution degree 2, as defined in
EN/IEC 60664-1, GB/T 16935.1.
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:
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 cables with a maximum permitted operating temperature of at least 20 °C
higher than the maximum ambient temperature.
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.
34
WARNING
WARNING
WARNING
WARNING
WARNING
Operating Instructions, 07/2021, C79000-G8976-C617-02
SCALANCE WxM766