Mitsubishi Q Series User Manual page 5

[Wiring Precautions]
• Always ground the FG terminal and the shielded cable for the programmable controller.
There is a risk of electric shock or malfunction.
• If energizing or operating after the wiring, be sure to put the terminal cover included with the
product.
Not doing do so may cause electric shock.
• Tighten with the specified torque, using an applicable crimping terminal for the crimping terminal.
If a crimping terminal with open end is used, the terminal screw falls off when coming loose, and
it can cause a malfunction.
• When wiring, be sure to verify the rated voltage of the product as well as the terminal layout. Fire
or failure may result if incorrect voltage is input or incorrect wiring is performed.
• Connecting terminals with incorrect voltage may result in malfunction or mechanical failure.
[Startup/Maintenance Precautions]
• Do not disassemble or modify the module.
Doing so could cause failure, malfunction, injury or fire.
• Be sure to shut off all phases of the external power supply used by the system before mounting
or removing the module.
Not doing so may cause failure or malfunction of the module.
In the system where a CPU module supporting the online module change is used and on the
MELSECNET/H remote I/O stations, modules can be replaced online (during energizing).
However, there are some restrictions on replaceable modules and the replacement procedures
are predetermined for each module.
For details, refer to the chapter of the online module change in this manual.
• 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.
• Be sure to shut off all phases of the external power supply used in the system, before cleaning
or retightening the screws or module fixing screws.
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.
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DANGER
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CAUTION
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