Notices On Use In Hazardous Areas According To Ul Hazloc; Installation - Procedure - Siemens SIMATIC NET S7-400 Manual

Cable
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).
5.1.3

Notices on use in hazardous areas according to UL HazLoc

EXPLOSION HAZARD
DO NOT DISCONNECT WHILE CIRCUIT IS LIVE UNLESS AREA IS KNOWN TO BE
NON-HAZARDOUS.
This equipment is suitable for use in Class I, Division 2, Groups A, B, C and D or non-
hazardous locations only.
This equipment is suitable for use in Class I, Zone 2, Group IIC or non-hazardous locations
only.
5.2

Installation - procedure

The steps for installing the CP are explained below.
Result: The CP is installed in the rack and the interfaces have been networked.
CP 443-1 RNA
Manual, 03/2019, C79000-G8976-C299-04
WARNING
WARNING
WARNING
Installation, connecting up, commissioning
5.2 Installation - procedure
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