lightning shock can't be applied to the PLC's power supply input terminals, signal input terminals and
output terminals and so forth, so as to avoid damage to the equipment.
Wiring
WARNING
◆ Wiring must be carried out by personnel who have the necessary electrical training and experience.
◆ Disconnect all external power supplies of the system before wiring. Failure to comply may result in
electric shock, module fault or malfunction.
◆ Install the terminal cover attached to the product before power-on or operation after wiring is
completed. Failure to comply may result in electric shock.
◆ Perform good insulation on terminals so that insulation distance between cables will not reduce
after cables are connected to terminals. Failure to comply may result in electric shock or damage to the
equipment."
CAUTION
◆ Prevent dropping metal filings and wire ends drop into ventilation holes of the PLC at wiring.
Failure to comply may result in fire, fault and malfunction.
◆ The external wiring specification and installation method must comply with local regulations. For
details, see the wiring section in this guide.
◆ To ensure safety of equipment and operator, use cables with sufficient diameter and connect the
cables to ground reliably.
◆ Wire the module correctly after making clear of the connector type. Failure to comply may result in
module and external equipment fault. Tighten bolts on the terminal block in the specified torque range.
If the terminal is not tight, short-circuit, fire or malfunction may be caused. If the terminal is too tight,
fall-off, short-circuit, fire or malfunction may be caused.
◆ If the connector is used to connect with external equipment, perform correct crimping or welding
with the tool specified by manufacturer. If connection is in poor contact, short-circuit, fire or
malfunction may be caused.
◆ A label on the top of the module is to prevent foreign matters entering the module. Do not remove
the label during wiring. Remember to remove it before system operation, facilitating ventilation.
◆ Do not bundle control wires, communication wires and power cables together. They must be run
with distance of more than 100 mm. Otherwise, noise may result in malfunction.
◆ Select shielded cable for high-frequency signal input/output in applications with serious
interference so as to enhance system anti-interference ability.
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