Notes On Use In Hazardous Areas According To Atex / Iecex - Siemens S7-1500 Operating Instructions Manual

Installation, connecting up, commissioning, operation
3.1 Important notes on using the device
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.
DIN rail
In the ATEX and IECEx area of application only the Siemens DIN rail 6ES5 710-8MA11
may be used to mount the modules.
3.1.2

Notes on use in hazardous areas according to ATEX / IECEx

Requirements for the cabinet/enclosure
To comply with EU Directive 94/9 (ATEX95), the enclosure or cabinet must meet the
requirements of at least IP54 in compliance with EN 60529.
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.
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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Operating Instructions, 05/2017, C79000-G8976-C289-07
CP 1543-1