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5 INSTALLATION AND WIRING
5.7 Wiring
Precautions
• Use UL listed solderless terminals if necessary for UL compliance, and for processing, use a tool recommended by their
manufacturer. Note that a solderless terminal with an insulation sleeve cannot be used.
• The wires used for connection to the terminal block must be 0.3 to 0.75 in core and 2.8mm or less in outside diameter.
• Wire the input and output lines away from each other.
• When the lines cannot be wire away from the main circuit and power lines, use a batch-shielded cable and ground it on the
programmable controller side. In some cases, ground it in the opposite side.
• Ground the piping securely where wiring runs through the piping.
• Install a 24VDC input line away from the 100VAC and 200VAC lines.
• Wiring of 200m or longer will occur the current leakage because of the line capacity, resulting in a fault.
• As a measure against the lightning surge, separate the AC wiring and DC wiring and connect a surge absorber for lightning.
(Page 130 Precautions)
• Failure to do so may cause the failure of an I/O device because of the lightning.
• There will be clearances between adjacent modules when the extended temperature range base unit is used, and therefore
care should be taken to ensure that cables do not pass between units at wiring.
DC
RA
Programmable
controller
Shielded cable
Jacket for the
shielded cable
Input
Output
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