Installation Precautions - YASKAWA UAK series User Manual

6.2.4 Installation Precautions

Observe the following precautions when designing the control panel.
(1) General Precautions
General precautions are given below.
• Always use a sealed structure for the control panel.
• Install the units so that maintenance inspections, removal, and installation can be performed easily.
• Provide about 100 mm of space between components and the control panel surfaces so that the flow of air is
not blocked inside the control panel.
• Design the control panel so that the average internal air temperature will be no more than 10°C higher than
the external air.
• We recommend the use of a fan to stir the air to increase cooling efficiency and prevent localized tempera-
ture increases in the sealed control panel.
• Separate the units from cables or components of 90 VDC or higher and cables or components for AC power
supply by at least 10 mm to help prevent malfunction due to noise.
• Separate the primary and secondary sides of transformer and noise filters.

(2) Installation Precautions

Precautions for installing the Σ-V-SD driver are given below.
• Always secure the Σ-V-SD driver on a vertical surface using screws or bolts.
• Provide the specified space on the left, right, top, and bottom of the driver to enable maintenance and venti-
lation. For details, refer to 6.2.5 Installation Orientation and Space.
• Place the heat sink of the Σ-V-SD driver outside of the ventilation ducts to allow external air flow through
the heat sink. The loss from the control panel will be reduced, and the majority of the loss from the unit will
be cooled directly by the external air.
• Cooling the heat sink requires an air flow of 2.5 m/s in the ventilation duct.
• Make sure that cooling air flows through the heat sink for each Σ-V-SD driver.
• We recommend a metal cooling fan. Plastic fans will deteriorate when exposed to cutting oil, which may
cause Σ-V-SD driver failure or other problems.
Flow of the external air
Unit
Σ-V-SD Driver Installation
Cooling fan
Ventilation duct
Heat sink
Flow of the external air
6.2 Σ-V-SD Driver
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