Startup And Maintenance Precautions - Mitsubishi Electric MELSEC-Q Series User Manual

[WIRING PRECAUTIONS]
● 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
maintenance personnel who is familiar with protection against electric shock.
(For the wiring methods, refer to QCPU (A mode) User's Manual.)

[STARTUP AND MAINTENANCE PRECAUTIONS]

● Do not touch any terminal while power is on.
Doing so will cause electric shock.
● Correctly connect the battery connector. Do not charge, disassemble, heat,
short-circuit, solder, or throw the battery into the fire.
Doing so will cause the battery to produce heat, explode, or ignite, resulting in
injury and fire.
● Shut off the external power supply for the system in all phases before cleaning
the module or retightening the terminal screws or module fixing screws.
Failure to do so may result in electric shock.
Undertightening the terminal screws can cause short circuit or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short
circuit, or malfunction.
● Before performing online operations (especially, program modification, forced
output and operating status change) for the running CPU module from the
peripheral connected, read relevant manuals carefully and ensure the safety.
Improper operation may damage machines or cause accidents.
● Do not disassemble or modify the modules.
Doing so may cause failure, malfunction, injury, or a fire.
● Use any radio communication device such as a cellular phone or PHS
(Personal Handy-phone System) more than 25cm (9.84inches) away in all
directions from the programmable controller.
Failure to do so may cause malfunction.
CAUTION
WARNING
CAUTION
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