Mitsubishi QJ71C24N User Manual page 6

[Startup/Maintenance Precautions]
• Do not disassemble or modify each module.
Doing so could cause failure, malfunction injury or fire.
• Before mounting/dismounting the module, be sure to shut off all phases of external power supply
used by the system.
Failure to do so may cause module failure or malfunctions.
• Do not install/remove the module to/from the base unit, or the terminal block to/from the module
more than 50 times after the first use of the product. (IEC 61131-2 compliant)
Failure to do so may cause malfunction.
• Do not touch the connector while the power is on.
Doing so may cause malfunction.
• Before cleaning up and retightening terminal screws and module fixing screws, be sure to shut
off all phases of external power supply used by the system.
Not doing so may cause failure or malfunction of the module.
If the screws are loose, it may cause the module to fallout, short circuits, or malfunction.
If the screws are tightened too much, it may cause damages to the screws and/or the module,
resulting in the module falling out, short circuits or malfunction.
• Always make sure to touch the grounded metal to discharge the electricity charged in the body,
etc., before touching the module.
Failure to do so may cause a failure or malfunctions of the module.
[Operation Precautions]
• When performing the control of the programmable controller in operation (especially changing
data, program, and operation status (status control)) by connecting a personal computer, etc. to
the intelligent function module, read this manual carefully and confirm if the overall safety is
maintained.
Failure to perform correct operation s to change data, program, or the status may result in
system malfunction, machine damage, or an accident.
[Disposal Precautions]
• When disposing of this product, treat it as industrial waste.
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