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2. INSTALLATION
2-3
2
2.1.2 Installation in control box
When installing the drive unit in a control box, the internal temperature of the control box must not
exceed the permissible value due to drive-unit generated heat and peripheral-generated heat.
Placing a heat sink outside the control box can reduce the heat generated inside the control box
Refer to: Chapter 7, 7.1.3 Option list (External heat sink mounting attachment)
Measurement positions of ambient temperatures
5cm 5cm
5cm
Measurement position
Drive unit
Measurement position
Layout of drive units within control box
V
entilation fan
Drive unit
(Correct example) (Incorrect example)
Drive unit
Position of ventilation fan
Built-in cooling fans
Accommodation of two or more drive units
Drive unit
Drive unit
Drive unit
Drive unit
(Incorrect example)(Correct example)
NOTICE
Leave the specified clearances between the drive unit and control box walls or other
equipment. Not doing so can cause a failure. In addition, improper convection of air
in the control box will reduce the heat dissipation effect. Fully consider the
equipment layout in the control box and the use of a cooling fan for ventilation, for
example.
10cm
or more
1cm
or more
Drive unit
1cm
or more
These clearances are also required for
replacement of the cooling fan.
Leave sufficient
clearances above and
under the drive unit
to ensure adequate
ventilation.
Cooling fan built
in the drive unit
Cooling air
10cm
or more