Installation And Commissioning; Important Notes On Using The Device; Notes On Use In Hazardous Areas - Siemens SIMATIC NET CP 443-5 Extended Manual

Installation and commissioning

3.1

Important notes on using the device

Safety notices on the use of the device
Note the following safety notices when setting up and operating the device and during all
associated work such as installation, connecting up or replacing the device.
3.1.1

Notes on use in hazardous areas

EXPLOSION HAZARD
Do not open the device when the supply voltage is turned on.
The device may only be operated in an environment with pollution degree 1 or 2 (see IEC
60664-1).
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 cables to or from the device when a flammable or
combustible atmosphere is present.
CP 443-5 Extended
Manual, 11/2018, C79000-G8976-C162-09
WARNING
WARNING
WARNING
WARNING
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