Heat dissipation, Eagle thermal data – ElmoMC ExtrIQ Digital Servo Drives-Eagle User Manual
Page 64
Eagle Installation Guide
Installation
MAN-EAGIG (Ver. 1.902)
64
3.6. Heat Dissipation
For full power output capability the Eagle is designed to be mounted on an external heat sink. It is
highly recommended that the “Wall” on which the Eagle is mounted will have heat dissipation
capabilities. The Eagle at “free air convection” (without an additional heat sink) 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's heat sink and any other assembly.
3.6.1.
Eagle Thermal Data
•
Free air convection thermal resistance (θ): Approximately 3.6 – 4 °C/W.
•
Thermal time constant: Approximately 40 minutes/2400 seconds (the thermal time constant
means that the Eagle will reach two thirds of its final temperature after 4 minutes).
•
Self heat dissipation capability (no external heat sink): 12 W for 40 °C/W temperature rise.
•
Shut-off temperature: 86 °C – 88 °C (measured on the heat sink).
•
The thermal resistance when connecting to an external heat sink:
The surface of the external heat sink is 50 μm: 0.18 °C/W.
Thermal conductive compound. By proper Smearing of the surface a significant
improvement of the thermal resistance is achieved: 0.13 °C/W