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[Wiring Precautions]
● Shut off the external power supply for the system in all phases before wiring.
Failure to do so may result in damage to the product.
● Always ground the FG terminal to the protective ground conductor.
Not doing so can cause a malfunction.
● Check the rated voltage and pin layout before wiring to the module, and
connect the cables correctly.
Connecting a power supply with a different voltage rating or incorrect wiring
may cause a fire or failure.
● Do not insert the one-touch connector plug for I/O of the one-touch connector
type/connector type compact remote I/O unit into the one-touch connector for
analog I/O accidentally.
Doing so can cause the module to be damaged.
● Prevent foreign matter such as dust or wire chips from entering the module.
Such foreign matter can cause a fire, failure, or malfunction.
● Always fit a non-wired, one-touch connector plug to the open one-touch
connector for power supply and FG.
Not doing so can cause a failure or malfunction.
● Place the cables in a duct or clamp them.
If not, dangling cable may swing or inadvertently be pulled, resulting in
damage to the module or cables or malfunction due to poor contact.
● Do not install the control lines or communication cables together with the main
circuit lines or power cables.
Failure to do so may result in malfunction due to noise.
● When disconnecting the cable from the module, do not pull the cable by the
cable part.
Loosen the screws of connector before disconnecting the cable.
Failure to do so may result in damage to the module or cable or malfunction
due to poor contact.
● Smoke and fire may occur when an overcurrent flows intermittently for a long
period of time. To avoid this, configure a safety circuit, such as an external
fuse, to protect the product.
CAUTION
A-3
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