6 Installation and Usage Conditions
14 YASKAWA America, Inc. MP3300iec Hardware Manual YAI-SIA-IEC-7
Control Panel Cooling Method
The components that are used in the Machine Controller require the ambient operating temperature to be between 0 and
60 °C. Use one of the methods described below to ensure adequate cooling in the control panel.
NOTICE: Equipment Damage. Use forced-air cooling if the ambient temperature exceeds 55°C.
Control Panels with Natural Cooling
• Do not mount the Machine Controller at the top of the control panel, where the hot air that is generated inside the panel
collects.
• Leave sufficient space above and below the Machine Controller, and maintain adequate distances from other devices,
cable ducts, and other objects to ensure suitable air circulation.
• Do not mount the Machine Controller in any direction other than the specified direction.
• Do not mount the Machine Controller on top of any device that generates a significant amount of heat.
• Do not subject the Machine Controller to direct sunlight.
Control Panels with Forced-air Cooling
Install a fan near the center of and at the top or bottom of the Machine Controller for either of the following methods.
• Forced draft method (A fan or a similar device is used to circulate the air in the interior and the exterior of the panel.).
• Forced circulation method (A fan or a similar device is mounted to the airtight panel to circulate the air inside.).
Note: 1. Use the following guideline when selecting the fan:
• 80 x 80 mm min., Maximum air flow: 0.9 m
3
/min, Maximum static pressure: 26.5 Pa or higher.
2. Adjust the fan installation location and the direction of air flow as shown in Figure 8.
Figure 8
Figure 8 Fan installation location and air flow direction
Fan
Fan
40 mm min.
10 mm
min.*
* For a control panel with natural cooling with the MBU-303 Base Unit: 30 mm min.
10 mm
min.*
40 mm min.
Approx.
40 mm
Direction
of air ow
Direction
of air ow
Approx.
40 mm
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