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[Wiring Precautions]
• When turning on the power supply or operating the module after installation or wiring work, be
sure that the module's terminal covers are correctly attached. Not attaching the terminal cover
could result in electric shock.
• External connections shall be crimped or pressure welded with the specified tools, or correctly
soldered.
Imperfect connections could result in short circuit, fires, or erroneous operation.
• Securely insatll the connector to the module.
• Be sure to fix communication 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.
• When connecting cables, be sure to do so correctly after confirming the type of interface you are
connecting to. If connection is made to a different interface or if wiring is faulty, it could cause
the module or external device to break down.
• 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.
• When disconnecting the communications cable or power cable that is connected to the module,
do not disconnect it by grasping the cable with your hand and pulling it.
Disconnect cables with connectors attached by taking hold of the connector at the connection
with the module and pulling the connector. For cables connected to a terminal block, remove the
cable after loosening the terminal block screws.
If the cable is pulled while it is connected to the module, it could cause malfunction or damage
the module or the 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.
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CAUTION
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