Assembling; Safety Notices For Installation - Siemens CPU 412-5H Equipment Manual

Assembling

5.1

Safety notices for installation

Safety notices
When installing the device, keep to the safety notices listed below.
Safety notices on use in hazardous areas
General safety notices relating to protection against explosion
EXPLOSION HAZARD
Replacing components may impair suitability for Class 1, Division 2 or Zone 2.
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.
Safety notices for use according to ATEX and IECEx
If you use the device under ATEX or IECEx conditions you must also keep to the following
safety notices in addition to the general safety notices for protection against explosion:
Requirements for the cabinet/enclosure
The equipment shall be installed in a suitable enclosure that provides a degree of protection
not less than IP54 in accordance with EN/IEC 60079-15.
Suitable cables at high ambient temperatures
If the temperature of the cable or housing socket exceeds 70 °C or the branching point of
conductors exceeds 80 °C, special precautions must be taken.
If the device is operated at ambient temperatures of between 50 °C and 70 °C, only use cables
with a maximum permitted operating temperature of at least 80 °C.
Synchronization modules for S7-400H
Equipment Manual, 04/2020, A5E50072434-AA
WARNING
WARNING
WARNING
WARNING
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