Mitsubishi Electric MELSEC-A Series Manual page 8

[Wiring Precautions]
● Mitsubishi Electric 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).
● 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.
● Use CC-Link dedicated cables for the CC-Link system. If not, the performance of the CC-Link
system is not guaranteed.
For the maximum station-to-station distance and the overall cable distance, follow the specifications
in the following.
If not, normal data transmission will not be guaranteed.
• CC-Link System Master/Local Module User's Manual
[Startup and Maintenance Precautions]
● Do not touch any terminal while power is on.
Doing so will cause electric shock or malfunction.
● Shut off the external power supply (all phases) used in the system before cleaning the module or
retightening the terminal screws or module fixing screws. Failure to do so may result in electric
shock.
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CAUTION
WARNING