DVP-ES3/EX3/SV3/SX3 Series Hardware and Operation Manual
4-10
Note: The wire diameter specifications are different, since the output wiring of the relay model varies
depending on the type of power supply provided. For details, refer to section 4.1.7.1.
(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.
Things to note while grounding
1. Use correct and independent method to grounding.
2. Use single-wire cables or two-wire cables in a diameter of 18 AWG to 12 AWG and with less than 2 mm
pin-typed terminals.
3. Make the grounding point close to the PLC and make sure ground the surge protector and the PLC
system.
Notes:
(1) Use 110 V/220 V power cable and the 24 VDC power cable with a diameter of 18-12AWG and with less
than 2 mm pin-type terminals. Be sure to twist the power cables at the terminal screws. To prevent a
short circuit from loose screws, you must use solderless terminals with insulation sleeves.
(2) 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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