Mitsubishi Electric MELSEC-Q Series User Manual page 6

[Startup and 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.
A module can be replaced online (while power is on) on any MELSECNET/H remote I/O station
or in the system where a CPU module supporting the online module change function is used.
Note that there are restrictions on the modules that can be replaced online, and each module
has its predetermined replacement procedure.
For details, refer to the relevant chapter in this manual.
 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 of 50 times may cause malfunction.
 Do not touch any terminal while power is on.
Failure to do 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 grounded metal object to discharge the static electricity
from the human body.
Failure to do so may cause the module to fail or malfunction.
[Disposal Precaution]
 When disposing of the product, handle it as industrial waste.
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CAUTION
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CAUTION
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