YASKAWA SGMAH, User Manual, Page: 37 / 488

Sigma II User’s Manual Chapter 2: Installation
2 - 9
2.2.4 Installation
Follow the procedure below to install multiple servo amplifiers side by side in a
control panel.
Servo Amplifier Orientation
Install the servo amplifier perpendicular to the wall so the front panel containing
connectors faces outward.
Cooling
As shown in the figure above, allow sufficient space around each servo amplifier for
cooling by cooling fans or natural convection.
Side-by-side Installation
When installing servo amplifiers side by side as shown in the figure above, allow at
least 0.39in (10mm) between and at least 1.97in (50mm) above and below each
servo amplifier. Install cooling fans above the servo amplifiers to avoid excessive
temperature rise and to maintain even temperature inside the control panel.
Environmental Conditions in the Control Panel
• Ambient Temperature: 0 to 55°C
• Humidity: 90% or less
• Vibration: 0.5 G (4.9m/s
2
)
• Condensation and Freezing: None
• Ambient Temperature for Long-term Reliability: 45°C maximum
1.18in (30mm) 0.39in (10mm)
minimum
1.97in (50mm) minimum
1.97in (50mm) minimum
Fan
Fan