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[Installation Precautions]
!
CAUTION
Do not directly touch any conductive parts and electronic components of the module.
Doing so can cause malfunction or failure of the module.
[Wiring Precautions]
!
WARNING
Shut off the external power supply (all phases) used in the system before installation and wiring.
Failure to do so may result in electric shock or damage to the product.
[Wiring Precautions]
!
CAUTION
Individually ground the FG terminal of the programmable controller with a ground resistance of
100Ω or less.
Failure to do so may result in electric shock or malfunction.
Check the rated voltage and terminal layout before wiring to the module, and connect the cables
correctly. Connecting a power supply with a different voltage rating or incorrect wiring may
cause a fire or failure.
Connectors for external devices and coaxial cables must be crimped or pressed with the tool
specified by the manufacturer, or must be correctly soldered. Incomplete connections may
cause short circuit, fire, or malfunction.
Place the cables in a duct or clamp them. If not, dangling cable may swing or inadvertently be
pulled, resulting in damage to the module or cables or malfunction due to poor contact.
Tighten the terminal screws within the specified torque range. Undertightening can cause short
circuit, fire, or malfunction. Overtightening can damage the screw and/or module, resulting in
drop, short circuit, or malfunction.
When disconnecting the cable from the module, do not pull the cable by the cable part. For the
cable with connector, hold the connector part of the cable. For the cable connected to the
terminal block, loosen the terminal screw. Pulling the cable connected to the module may result
in malfunction or damage to the module or cable.
Prevent foreign matter such as dust or wire chips from entering the module. Such foreign matter
can cause a fire, failure, or malfunction.
A protective film is attached to the top of the module to prevent foreign matter, such as wire
chips, from entering the module during wiring.
Do not remove the film during wiring.
Remove it for heat dissipation before system operation.
Mitsubishi programmable controllers must be installed in control panels. Connect the main
power supply to the power supply module in the control panel through a relay terminal block.
Wiring and replacement of a power supply module must be performed by qualified maintenance
personnel with knowledge of protection against electric shock. For wiring methods, refer to the
QCPU User's Manual (Hardware Design, Maintenance and Inspection).