Mitsubishi MELSEC-A A1SJ71AS92 User Manual page 4

[INSTALLATION PRECAUTIONS]
Use the programmable controller in an environment that conforms to the
general specifications in CPU module user's manual.
Using the programmable controller in the environments outside the ranges
stated in the general specifications will cause electric shock, fire,
malfunction, or damage to/deterioration of the product.
Do not touch conductive parts or electronic components of the module with
your bare hands.
This could cause malfunction or failure of the module
Insert the module fixing projection into the fixing hole in the base unit and
then tighten the module mounting screw within the specified torque. Then
tighten the module mounting screw to the specified torque. Incorrect
installation with no screws could result in malfunction, failure or fall of the
module. Tightening the screw excessively may cause fall, short circuit, or
malfunction of the module due to damage of the screw or the module.
Always shut off all phases of the programmable controller power supply
and AS-i power supply externally before mounting or removing the module.
Failure to shut off all phases could lead to product damage.
[WIRING PRECAUTIONS]
Switch off all phases of the programmable controller power supply and AS-i
power supply outside the programmable controller before starting installing
or wiring work. There is a risk of electric shock or malfunction.
Always install the terminal covers enclosed with the product before turning
ON the power or operating the product after installation or wiring.
Failure to install the terminal cover could lead to electric shocks.
CAUTION
WARNING
A-3