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[Wiring Precautions]
CAUTION
Ground the FG and LG terminals correctly.
Not doing so could result in electric shock or malfunctions.
Use a solderless terminal with insulation sleeve for wiring of a terminal block.
Use up to two solderless terminals for a single terminal.
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 a failure.
Wire the module correctly after confirming the rated voltage and terminal
layout.
Connecting a power supply of a different rated voltage or incorrect wiring may
cause a fire or failure.
Tighten a terminal block mounting screw, terminal screw, and module
mounting screw within the specified torque range.
If the terminal block mounting screw or terminal screw is too loose, it may
cause a short circuit, fire, or malfunctions.
If too tight, it may damage the screw and/or the module, resulting in a drop of
the screw or module, a short circuit or malfunctions.
If the module mounting screw is too loose, it may cause a drop of the screw or
module.
Over tightening the screw may cause a drop due to the damage of the screw
or module.
Be sure there are no foreign substances such as sawdust or wiring debris
inside the module. Such debris could cause a fire, failure, or malfunctions.
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.
Install our programmable controller in a control panel for use.
Wire the main power supply to the power supply module installed in a control
panel through a distribution terminal block.
Furthermore, the wiring and replacement of a power supply module have to
be performed by a maintenance worker who acquainted with shock protection.
(For the wiring methods, refer to the QSCPU User's Manual (Hardware
Design, Maintenance and Inspection).)
A-5
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