Chapter 4 Installing Hardware
4-35
Note: The wire diameter specifications are different, since the output wiring of the relay model varies
depending on the type of power supply provided. Refer to sections 4.2.7.1 and 4.2.9.1 for more details.
(4) Keep the input cables, output cables, and power cable separate from one another.
(5) If the main circuit and the power cable cannot be separated from each other, use a shielded cable,
and ground it at the side of the I/O module. In some cases, the shielded cable can be grounded at
the opposite side.
(6) If you wire a module through conduit, you must ground the conduit correctly.
(7) Keep 24 VDC input cables separate from 110 VAC input cables and 220 VDC input cables.
(8) If the wiring length is more than 200 meters (686.67 inches), leakage current can result from parasitic
capacitance, and the system will not function properly.
Note: If cables are connected to the terminals
/ , you must ground the cables. Do not connect /
to any devices. If / are not grounded, the PLC will be susceptible to noise. Since / carries
electric potential, you will get an electric shock if you touch the metal parts.
alternating current passes
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