Installation Precautions - Mitsubishi Electric MELSEC-Q Series User Manual

[INSTALLATION PRECAUTIONS]

● Use the programmable controller under the environment that meets the
general specifications in this manual.
Failure to do so may result in electric shock, fire, malfunction, or damage to or
deterioration of the product.
● To mount the CPU 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 a drop of the module.
When using the programmable controller in an environment of frequent
vibrations, fix the module with the 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.
● Insert securely the module fixing projection at the bottom of the AnS series
module into the fixing hole in the base unit and then tighten the module fixing
screw within the specified torque.
When no screw is tightened, even if the module is installed correctly, it may
cause malfunctions, a failure or a drop of the module.
Tightening the screw excessively may damage the screw and/or the module,
resulting in a drop of the module, a short circuit or malfunctions.
● When using an extension cable, connect it to the extension cable connector of
the base unit securely.
Check the connection for looseness.
Poor contact may cause incorrect input or output.
● When using a memory card, fully insert it into the memory card slot.
Check that it is inserted completely.
Poor contact may cause malfunction.
● Shut off the external power supply for the system in all phases before
mounting or removing the module.
Failure to do so may result in damage to the product.
● Do not directly touch any conductive part of the module.
Doing so can cause malfunction or a failure of the module.
CAUTION
A-4