Siemens CP 5711, Operating Instructions Manual

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CP 5711
Operating Instructions, 02/2018, C79000-G8976-C283-05
15
Hardware installation
3
3.1 Connecting to the PG/PC
Safety notices
WARNING
EXPLOSION HAZARD
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.
To comply with EC Directive 94/9 (ATEX95), this enclosure must meet the requirements of
at least IP54 in compliance with EN 60529.
WARNING
EXPLOSION HAZARD
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 device is operated at an ambient
temperature of 0 °C - 60 °C, make sure that you use cables with a permitted ambient
temperature of at least 80 °C.
WARNING
EXPLOSION HAZARD
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).
WARNING
EXPLOSION HAZARD
Do not use any parts that show evidence of damage.
WARNING
EXPLOSION HAZARD
DO NOT CONNECT OR DISCONNECT EQUIPMENT WHEN A FLAMMABLE OR
COMBUSTIBLE ATMOSPHERE IS PRESENT.