ElmoMC ExtrIQ Digital Servo Drives-Eagle HV - Manual (Page 64)

Eagle HV Installation Guide Installation
MAN-EAG-HVIG (Ver. 1.502)
www.elmomc.com
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3.6. Powering Up
After the Eagle HV has been mounted, check that the cables are intact.
The Eagle HV servo drive is then ready to be powered up.
Caution:
Before applying power, ensure that the DC supply is within the range specified
for your specific type of Eagle HV and that the proper plus-minus connections
are in order.
3.7. Heat Dissipation
For full power output capability the Eagle HV is designed to be mounted on an external
heatsink. It is highly recommended that the “Wall” on which the Eagle HV is mounted will have
heat dissipation capabilities. The Eagle HV at “free air convection” (without an additional
heatsink) can dissipate around 12 W for 40 °C ambient temperature and not exceeding 80 °C
on the heat sink.
When “Free Air Convection” is sufficient for the application it is recommended to leave
approximately 10 mm of space between the Eagle HV's heat sink and any other assembly.
3.7.1. Eagle HV Thermal Data
• Free air convection thermal resistance (θ): Approximately 7 to 8°C/W.
• Thermal time constant: Approximately 40 minutes/ 2400 seconds (thermal time constant
means that the Eagle HV will reach 2/3 of its final temperature after 4 minutes).
• Self-heat dissipation capability (no external heat sink): 20 W for 40°C/W temperature rise.
• Shut-off temperature: 86 to 88°C (measured on the heat sink).
• The thermal resistance when connecting to an external heat sink using a thermal
conductive compound/foil. By proper smearing of the surface a significant improvement of
the thermal resistance is achieved: 0.06°C/W.