Mitsubishi Electric Melsec Q Series User Manual page 5

[WIRING PRECAUTIONS]
 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.
 Individually ground the FG terminal of the programmable controller with a ground resistance of
100 or less.
Failure to do so may result in electric shock or malfunction.
 Use applicable solderless terminals and tighten them within the specified torque range. If any
spade solderless terminal is used, it may be disconnected when a terminal screw comes loose,
resulting in failure.
 Tighten the terminal 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.
 Be careful not to let foreign matter such as sawdust or wire chips get inside the module.
They may cause fires, failure or malfunction.
 The top surface of the module is covered with protective film to prevent foreign objects such as
cable offcuts from entering the module when wiring.
Do not remove this film until the wiring is complete.
Before operating the system, be sure to remove the film to provide adequate ventilation.
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WARNING
CAUTION
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