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Installation, connection, commissioning, removal
3.1 Important notes on using the device
The device may only be operated in an environment with pollution degree 1 or 2 as
described in EN/IEC 60664-1, GB/T 16935.1.
Power supply
The device is designed for operation with a directly connectable safety extra low voltage
(SELV) from a limited power source (LPS).
The power supply therefore needs to meet at least one of the following conditions:
• Only safety extra low voltage (SELV) with limited power source (LPS) complying with IEC
If the equipment is connected to a redundant power supply (two separate power supplies),
both must meet these requirements.
EXPLOSION HAZARD
You may only connect or disconnect cables carrying electricity when the power supply is
switched off or when the device is in an area without inflammable gas concentrations.
3.1.2
Notes on use in hazardous areas according to ATEX / UKEX / IECEx / CCC-Ex
Requirements for the cabinet/enclosure
To comply with EC Directive 2014/34 EU (ATEX 114) or the conditions of IECEx, this
enclosure or cabinet must meet the requirements of at least IP54 (in compliance with
EN 60529) according to EN 60079-7.
Suitable cables at high ambient temperatures in hazardous area
At an ambient temperature of ≥ 60 °C, use heat-resistant cables designed for an ambient
temperature at least 20 °C higher. The cable entries used on the enclosure must comply
with the IP degree of protection required by EN IEC / IEC 60079-0, GB 3836.1.
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WARNING
WARNING
60950-1 / EN 60950-1 / VDE 0805-1 or IEC 62368-1 / EN 62368-1 / VDE 62368-1 may be
connected to the power supply terminals.
WARNING
WARNING
WARNING
Operating Instructions, 12/2022, C79000-G8976-C588-01
SIMATIC CP 4163-1
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