Notices On Use In Hazardous Areas - Siemens S7-1200 Operating Instructions Manual
Hubs & controllers telecontrol/lte
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Also See for S7-1200:
- System manual (1028 pages) ,
- Operating instructions manual (132 pages) ,
- Programming manualline (74 pages)
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Installation, connecting up, commissioning
3.1 Important notes on using the device
3.1.1
Notices on use in hazardous areas
EXPLOSION HAZARD
DO NOT OPEN WHEN ENERGIZED.
The equipment is designed for operation with Safety Extra-Low Voltage (SELV) by a
Limited Power Source (LPS).
This means that only SELV / LPS complying with IEC 60950-1 / EN 60950-1 / VDE 0805-1
must be connected to the power supply terminals. The power supply unit for the equipment
power supply must comply with NEC Class 2, as described by the National Electrical Code
(r) (ANSI / NFPA 70).
If the equipment is connected to a redundant power supply (two separate power supplies),
both must meet these requirements.
EXPLOSION HAZARD
DO NOT CONNECT OR DISCONNECT EQUIPMENT WHEN A FLAMMABLE OR
COMBUSTIBLE ATMOSPHERE IS PRESENT.
EXPLOSION HAZARD
SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR CLASS I, 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.
34
WARNING
WARNING
WARNING
WARNING
WARNING
Operating Instructions, 01/2015, C79000-G8976-C381-01
CP 1243-7 LTE
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