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Rockwell Automation Publication 1718-IN001A-EN-E - June 2020
1718 Ex I/O
• The connection must be secured against loosening, fixed against
mechanical stress and protected against corrosion. The Protective Earth
(PE), which is optionally carried into the enclosure, must either be
separated from the equipotential bonding of the hazardous area or the
installer regulations of IEC/EN 60079-14 must be observed. The shield
of the Ethernet cable must also be connected to the equipotential
bonding. If the shield is grounded on both sides, the equipotential
bonding of the hazardous area must be carried to the remote station in
accordance with the specifications of the installer regulations of IEC/
EN 60079-14. In the case of one-sided earthing, the remote station must
be sufficiently insulated (>500V AC/700 V DC).
WARNING:
• Use only 1718 EtherNet/IP™ cables listed within manual.
• Never fabricate the M12 plug for the adapter. Always use the original plug supplied
with the cable.
• For connections in explosion-hazardous areas, only the specified M12 connections
on the adapter and cable may be used.
• No further allocation is permitted in explosion-hazardous areas. A cable with an
M12 plug must be connected either directly to another M12 connection in the
explosion hazardous area or directly to an RJ45 port in the safe area.
• Plugging and unplugging of the cable in explosion-hazardous areas is allowed only
if both sides of the connection (socket on the adapter and connector on the cable)
are deenergized and the atmosphere is not potentially explosive.
• The shielding must be connected to the same “PA” at both ends of the wire (or PE
in the safe area).
• Do not exceed the maximum cable length of 100 m.
