Mitsubishi Electric QJ71C24N User Manual page 6

[Startup/Maintenance Precautions]
 Do not disassemble or modify the modules.
Doing so may cause failure, malfunction, injury, or a fire.
 Shut off the external power supply (all phases) used in the system before mounting or removing
the module.
Failure to do so may cause the module to fail or malfunction.
 After the first use of the product, do not mount/remove the module to/from the base unit, and the
terminal block to/from the module more than 50 times (IEC 61131-2 compliant) respectively.
Exceeding the limit may cause malfunction.
 Do not touch any terminal while power is on.
Doing so may cause 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 cause the module to fail or malfunction.
Undertightening can cause drop of the screw, short circuit or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, or
malfunction.
 Before handling the module, touch a conducting object such as a grounded metal to discharge
the static electricity from the human body.
Failure to do so may cause the module to fail or malfunction.
[Operation Precautions]
 When changing data and operating status, and modifying program of the running programmable
controller from an external device such as a personal computer connected to an intelligent
function module, read relevant manuals carefully and ensure the safety before operation.
Failure to perform correct operations 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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