Layout Design Of The Base Units - Mitsubishi Electric Q172DCPU User Manual

3 DESIGN

3.3.2 Layout design of the base units

Due to ventilation problems, do not mount the base units vertically or horizontally.
Mount the base units on a flat surface. Unevenness or warping of the surface can apply undue
force to printed circuit boards and lead to operation failures.
Avoid mounting the base units close to a vibration source, such as a large electromagnetic
contactor or no-fuse breaker. Mount them on a separate panel or at a safe distance.
To limit the effects of reflected noise and heat, leave 100mm(3.94inch) or more clearance to
instruments fitted in front of the Motion controller (on the rear of the door).
Similarly, leave 50mm(1.97inch) or more clearance between instruments and the left and right
sides of the base units.
This section describes the precautions related to mount a Motion controller in
an enclosure.
(1) To improve ventilation and permit easy replacement of the module, leave a space
of the following table between the top, bottom, side of the module and any other
object.
(For details on layout design refer to section 4.1.2 "Instructions for mounting of the
base unit".)
• Top 40mm (1.57inch) or more
• Bottom 100mm (3.94inch) or more
• Front 100mm (3.94inch) or more
• Side 5mm (0.20inch) or more
(2) Provide a wiring duct, if required.
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CAUTION
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