Mitsubishi MELSEC Q Series Handbook page 6

[Installation Precautions]
● Use the programmable controller in an environment that meets the general specifications contained
in the user's manual of the CPU module to use.
Using this programmable controller in an environment outside the range of the general specifications
may cause electric shock, fire, malfunction, and damage to or deterioration of the product.
● While pressing the installation lever located at the bottom of module, insert the module fixing tab into
the fixing hole in the base unit until it stops. Then, securely mount the module with the fixing hole as
a supporting point.
If the module is not installed properly, it may cause the module to malfunction, fail or fall off.
Secure the module with screws especially when it is used in an environment where constant
vibrations may occur.
● Tighten the screws within the range of specified torque.
If the screws are loose, it may cause the module to fallout, short circuits, or malfunction.
If the screws are tightened too much, it may cause damage to the screw and/or the module, resulting
in fallout, short circuits or malfunction.
● Before mounting/dismounting the module, be sure to shut off all phases of external power supply
used by the system.
Failure to do so may cause product damage.
● Do not directly touch the conductive area or electronic components of the module.
Doing so may cause malfunction or failure in the module.
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CAUTION