Mitsubishi MELSEC-A A1SCPUC24-R2, User Manual

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(6) When installing the base unit to DIN rail in an environment with
large vibration, use a vibration-proofing bracket (A1S-PLT-D).
Mounting the vibration-proofing bracket (A1S-PLT-D) enhances the
resistance to vibration. Depending on the environment to set up the
base unit, it is also recommended to fix the base unit to the control
panel directly.
4.1.2 Installation environment
Avoid the following environment when you install the CPU system:
(1) A location in which the ambient temperature falls outside the range
of 0 to 55 degrees Celsius.
(2) A location in which the ambient humidity falls outside the range of
10 to 90%RH.
(3) A location in which condensation may occur due to drastic changes
in temperature.
(4) Tighten screws (such as a module fixingscrew) within the tightening
torque range specified in the tablebelow.
(5) A location in which the system is easily exposed to conductive
powder, such as dust and iron filings, oil mist, salt, or organic
solvent.
(6) A location exposed to direct sunlight.
(7) A location in which strong electrical or magnetic fields are
generated.
(8) A location in which the module is exposed to direct vibration or
impact.