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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).
3.1.3
Notices about 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.
3.2
Installing, connecting up and commissioning
Prior to installation and commissioning
Read the system manual "S7-1200 Programmable Controller"
Prior to installation, connecting up and commissioning, read the relevant sections in the
system manual "S7-1200 Programmable Controller", refer to the documentation in the
Appendix.
When installing and connecting up, keep to the procedures described in the system manual
"S7-1200 Programmable Controller".
CP 1243-8 IRC
Operating Instructions, 06/2015, C79000-G8976-C385-01
WARNING
WARNING
WARNING
CAUTION
Installation, connecting up, commissioning
3.2 Installing, connecting up and commissioning
39
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