Mitsubishi Electric MELSEC-A Series Manual page 6

[Installation Precautions]
● Shut off the external power supply (all phases) used in the system before mounting or removing a
module.
Failure to do so may result in electric shock or cause the module to fail or malfunction.
● Use the programmable controller in an environment that meets the general specifications in the
user's manual for the CPU module used.
Failure to do so may result in electric shock, fire, malfunction, or damage to or deterioration of the
product.
● To mount a Q series module, while pressing the module mounting lever located in the lower part of
the module, fully insert the module fixing projection(s) into the hole(s) in the base unit and press the
module until it snaps into place.
Incorrect mounting may cause malfunction, failure or drop of the module.
When using the programmable controller in an environment of frequent vibrations, fix the module
with a screw.
Tighten the screw within the specified torque range.
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.
● To mount an A/AnS/QnA/QnAS module, fully insert the module fixing projection(s) located in the
lower part of the module into the hole(s) in the base unit and press the module until it snaps into
place (To fix an AnS series module to the base unit, tighten the screws within the specified torque
range).
Incorrect mounting may cause malfunction, failure or drop of the module.
● Shut off the external power supply (all phases) used in the system before mounting or removing the
module. Failure to do so may result in damage to the product.
● 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.
• Q Corresponding MELSECNET/H Network System Reference Manual (Remote I/O network)
● Do not directly touch any conductive parts and electronic components of the module.
Doing so can cause malfunction or failure of the module.
A
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WARNING
CAUTION