Mitsubishi Electric MELSEC Q Series User Manual page 6

[Installation Precautions]
 For connector wiring, correctly press, pressure-weld or solder the connecting part by using the
tool specified by the manufacturer.
Poor connection may cause short circuits, fires or malfunctions.
 Be sure to set the CompactFlash card by pressing it into the CompactFlash card slot. Confirm it
is completely set.
Poor contact may lead to malfunctions.
[Wiring Precautions]
 Be sure to fix communication cables and power cables to the module by ducts or clamps.
Failure to do so may cause damage of the module or the cables due to accidental pull or
unintentional shifting of the cable, or malfunctions due to poor contact of the cables.
 Connect the connectors to the module securely.
 Tighten the terminal screws with the specified torque.
If the terminal screws are loose, it could result in short circuits, fire, or erroneous operation.
Tightening the terminal screws too far may cause damages to the screws and/or the module,
resulting in fallout, short circuits, or malfunction.
 Do not hold the communication cable by hand when pulling it out from the module.
Be sure to hold the connector by hand, when removing the cable with a connector from the
module.
Failure to do so may cause malfunctions or damage to the module or cable.
 Be sure there are no foreign substances such as sawdust or wiring debris inside the module.
Such debris could cause fires, damage, or erroneous operation.
 The module has an ingress prevention label on its top to prevent foreign matter, such as wire
offcuts, from entering the module during wiring.
Do not peel this label during wiring.
Before starting system operation, be sure to peel this label because of heat dissipation.
[Startup/Maintenance Precautions]
 Do not touch the terminals while the power is on.
Doing so may cause malfunctions.
 Before cleaning up and retightening terminal screws and module mounting screws, be sure to
shut off all phases of external power supply used by the system.
Failure to do so can cause the failure or malfunctions of module.
Loose tightening may cause a fall, short-circuits, or malfunctions of the module.
Overtightening may damage the screws and module and cause a fall, short-circuits, or
malfunctions of the module.
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CAUTION
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CAUTION
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WARNING
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