Mitsubishi Electric MELSEC Q Series User Manual page 7

[Wiring Precautions]
● Shut off the external power supply for the system in all phases before installation and wiring. Failure
to do so may result in electric shock or damage to the product.
● After wiring, attach the included terminal cover to the module before turning it on for operation.
Failure to do so may result in electric shock.
● Ground the FG and LG terminals to the protective ground conductor dedicated to the C controller
module. Failure to do so may result in electric shock or malfunction.
● Use compatible solderless terminals and tighten them to the specified torque. Use of lead-type
solderless terminals may cause the terminal screws be loosened, leading to a failure.
● Check the rated voltage and terminal 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.
● Crimp, weld or properly solder the external connectors and co-axial cable connectors with tools
specified by the manufacturer. Incomplete connections could result in short circuit, fire or
malfunction.
● Do not install the control lines or the communication cables together with the main circuit lines or
power cables.
It should be at least 100 mm apart.Doing so may result in malfunction due to noise.
● Be sure to place in a duct or fix by clamps the power cords and cables connected to the module. If
not, dangling cable may swing or inadvertently be pulled, resulting in damage to the module or
cables or malfunctions due to poor contact.
● Tightening torque for the terminal screws should be in the specified range. Undertightening the
terminal screws can cause short circuit, fire or malfunction. Overtightening can damage the terminal
screw and/or module, resulting in drop, short circuit, or malfunction.
WARNING
CAUTION
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