Mitsubishi Electric MELSEC-A Series Manual page 9

[Startup and Maintenance Precautions]
● Before performing online operations (especially, program modification, forced output, and operating
status change) for the running CPU module on another station from GX Developer over the
MELSECNET/H network, read relevant manuals carefully and ensure the safety.
Improper operation may damage machines or cause accidents.
● Do not disassemble or modify the modules.
Doing so may cause failure, malfunction, injury, or a fire.
● Use any radio communication device such as a cellular phone or PHS (Personal Handy-phone
System) more than 25cm away in all directions from the programmable controller.
Failure to do so may cause malfunction.
● Shut off the external power supply (all phases) used in the system before mounting or removing a
module. Failure to do so may cause the module to fail or malfunction.
A MELSECNET/H module with function version D or later can be replaced online (while power is on)
on any remote I/O station.
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 section in the following
manual.
• Q Corresponding MELSECNET/H Network System Reference Manual (Remote I/O network)
● Do not touch any terminal while power is on.
Doing so will cause malfunction.
● Tighten the module fixing screw and the terminal screw within the specified torque range.
Undertightening can cause drop of the component or wire, short circuit, or malfunction.
Overtightening can damage the screw and/or module, resulting in drop, short circuit, 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 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.
CAUTION
CAUTION
A
- 7