Mitsubishi QD51, User Manual

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[Startup and Maintenance precautions]
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CAUTION
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Do not disassemble or modify the modules.
Doing so could cause trouble, erroneous operation, injury, or fire.
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Completely turn off the externally supplied power used in the system before mounting or
removing the module. Not doing so could result in damage to the product.
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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.
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Do not touch the terminals while power is on.
Doing so could cause shock or erroneous operation.
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Switch off all phases of the externally supplied power used in the system when cleaning the
module or retightening the terminal or module fixing screws.
Not doing so could result in electric shock.
Undertightening of terminal screws can cause a short circuit or malfunction.
Overtightening of screws can cause damages to the screws and/or the module, resulting in
fallout, short circuits, or malfunction.
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Before touching the module, always touch grounded metal, etc. to discharge static electricity
from human body, etc.
Not doing so can cause the module to fail or malfunction.
[Operating Precautions]
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CAUTION
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When performing control (in particular, changing data, changing a program or changing the
operation status (status control)) of the programmable controller during operation using a BASIC
program, do so only after reading the user's manual thoroughly and taking adequate safety
precautions.
If there are errors when changing data, changing a program or in status control, it could result in
system malfunction, or cause mechanical damage or accidents.
[Disposal Precautions]
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CAUTION
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When disposing of this product, treat it as industrial waste.