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Mitsubishi Electric MELSEC-I/OLINK Handbook Page 10

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[Wiring Precautions]
● Tighten the terminal block screws within the specified torque range.
Undertightening can cause short circuit, fire, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or malfunction.
● Prevent foreign matter such as dust or wire chips from entering the module.
Such foreign matter can cause a fire, failure, or malfunction.
● A protective film is attached to the top of the module to prevent foreign matter, such as wire chips,
from entering the module during wiring.
Do not remove the film during wiring.
Remove it for heat dissipation before system operation.
● Incorrect wiring may damage modules and external devices.
Adjust a cable length and a module position to prevent disconnection of a connector type terminal
block or a cable.
● Do not solder stranded wires of a cable when connecting them to the terminal block. Doing so may
cause poor contact.
● The power supply voltage of remote slave modules may be insufficient due to a voltage drop in the
power supply line. Connect an external power supply so that the voltage of remote slave modules is
ensured.
● Do not apply the 24VDC power before wiring the entire AnyWire DB A20 system. If the power is
applied before wiring, normal data transmission is not guaranteed.
● Use 24VDC stabilized power supplies for devices in the AnyWire DB A20 system.
● 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.
● 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.
● When disconnecting the cable from the module, do not pull the cable by the cable part.
For the cable connected to the terminal block, loosen the terminal screw.
Pulling the cable connected to the module may result in malfunction or damage to the module or
cable.
A
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CAUTION

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Anywire db a20

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