Installation, Removal And Repairs In Hazardous Areas - Siemens SIMATIC NET CP 442-1 RNA Equipment Manual

5.2

Installation, removal and repairs in hazardous areas

Impermissible accessories and spare parts
Risk of explosion in hazardous areas
• Only use original accessories and original spare parts.
• Observe all relevant installation and safety instructions described in the manuals for the
Unsuitable cables or connectors
Risk of explosion in hazardous areas
• Only use connectors that meet the requirements of the relevant type of protection.
• If necessary, tighten the connector screw connections, device fastening screws,
• Close unused cable openings for electrical connections.
• Check the cables for a tight fit after installation.
Improper installation of shielded cables
There is a risk of explosion due to equalizing currents between the hazardous area and the
non-hazardous area.
• Ground shielded cables that cross hazardous areas at one end only.
• Lay a potential equalization conductor when grounding at both ends.
Lack of equipotential bonding
If there is no equipotential bonding in hazardous areas, there is a risk of explosion due to
equalizing current or ignition sparks.
• Ensure that equipotential bonding is available for the device.
Unprotected cable ends
There is a risk of explosion due to unprotected cable ends in hazardous areas.
• Protect unused cable ends according to IEC/EN 60079-14.
CP 442-1 RNA
Equipment Manual, 03/2022, C79000-G8976-C318-05
WARNING
device or supplied with the accessories or spare parts.
WARNING
grounding screws, etc. according to the specified torques.
WARNING
WARNING
WARNING
Installation, wiring, commissioning, removal
5.2 Installation, removal and repairs in hazardous areas
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