Mitsubishi Electric MELSEC Q Series User Manual page 5

[Wiring Precautions]
 Be careful not to let foreign matters 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 heat ventilation.
 Be sure to fix communication cables or power supply cables leading from the module by placing
them in the duct or clamping them.
Cables not placed in the duct or without clamping may hang or shift, allowing them to be
accidentally pulled, which may cause a module malfunction and cable damage.
 Do not grab on the cable when removing the communication or power cable connected to the
module.
When disconnecting a cable without a connector, first loosen the screws on the part that is
connected to the module.
Pulling the cable when it is still connected to the module may cause damage to the module or
cable, or misoperation due to cable contact failure.
 Always ground the shielded cable for the programmable controller.
There is a risk of electric shock or malfunction.
 Use applicable solderless terminals and tighten them with the specified torque. If any solderless
spade terminal is used, it may be disconnected when the terminal screw comes loose, resulting
in failure.
 When wiring, be sure to verify the rated voltage of the product as well as the terminal layout. Fire
or failure may result if incorrect voltage is input or incorrect wiring is performed.
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