Mitsubishi MELSEC-Q Series User Manual page 5

[Installation Precautions]
Completely turn off the externally supplied power used in the system before
mounting or removing the module.
Not doing so could result in damage to the product.
Tighten the screw in the specified torque range.
Undertightening can cause a drop, short circuit or malfunction.
Overtightening can cause a drop, short circuit or malfunction due to damage
to the screw or module.
Do not directly touch the module's conductive parts or electronic
components.
Touching the conductive parts could cause an operation failure or give
damage to the module.
When connecting a connector, properly press, crimp, or solder it using the
tools specified by the manufacturer.
Incomplete connection may cause short-circuit, fire, and malfunctions.
Push the CompactFlash card into the CompactFlash card slot and install it
securely.
After installing the CompactFlash card, check that it is inserted securely.
Failure to do so may cause malfunctions due to poor contact.
[Wiring Precautions]
Always store the communication cables and power cables connected to the
module in the duct or fix them in place with clamps.
Not doing so may cause swing, move, or poor connection of the cable, or
damage of a module and/or cable due to careless pull, resulting in
malfunctions.
Install connectors securely to modules.
CAUTION
CAUTION
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