Mitsubishi Electric MELSEC-Q series User Manual page 5

[Startup and Maintenance Precautions]
● Do not touch any terminal while power is on. Doing so will cause electric shock or 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 result in electric shock
or 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.
● 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.
● 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 Precautions]
● When disposing of this product, treat it as industrial waste.
WARNING
CAUTION
CAUTION
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