Mitsubishi Electric MELSEC Q Series Reference Manual page 6

[Startup and Maintenance Precautions]
● 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 the
module.
Failure to do so may cause the module to fail or 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 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.
● After the first use of the product, do not mount/remove the module to/from the base unit more than 50
times (IEC 61131-2 compliant).
Exceeding the limit of 50 times may cause malfunction.
[Disposal Precautions]
● When disposing of this product, treat it as industrial waste.
4
CAUTION
CAUTION