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Siemens SIMATIC NET S7-1200 - Notices on use in hazardous areas; Notices regarding use in hazardous areas according to ATEX

Siemens SIMATIC NET S7-1200
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Installation, connecting up, commissioning
4.1 Important notes on using the device
CP 1243-1 DNP3, CP 1243-1 IEC
26 Operating Instructions, 02/2014, C79000-G8976-C312-02
WARNING
EXPLOSION HAZARD
DO NOT CONNECT OR DISCONNECT EQUIPMENT WHEN A FLAMMABLE OR
COMBUSTIBLE ATMOSPHERE IS PRESENT.
WARNING
EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION
2 OR ZONE 2.
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.
4.1.2
Notices regarding use in hazardous areas according to ATEX
WARNING
Requirements for the cabinet/enclosure
To comply with EU Directive 94/9 (ATEX95), this enclosure must meet the requirements of
at least IP54 in compliance with EN 60529.
WARNING
If the cable or conduit entry point exceeds 70 °C or the branching point of conductors
exceeds 80 °C, special precautions must be taken. If the equipment is operated in an air
ambient in excess of 50 °C, only use cables with admitted maximum operating temperature
of at least 80 °C.
WARNING
Take measures to prevent transient voltage surges of more than 40% of the rated voltage.
This is the case if you only operate devices with SELV (safety extra-low voltage).

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