ElmoMC ExtrIQ Gold Line Servo Drives-Gold Eagle - Manual (Page 64)

Gold Eagle Installation Guide
MAN-G-EAGIG-EC (Ver. 1.000)
||Gold Eagle Thermal Data| www.elmomc.com
64
Table of Contents
Chapter 11: Heat Dissipation
For full power output capability the Gold Eagle is designed to be mounted on an external heat-sink.
It is highly recommended that the “Wall” on which the Gold Eagle is mounted will have heat
dissipation capabilities. The Gold 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 Gold Eagle’s heat sink and any other assembly.
11.1. Gold Eagle Thermal Data
• Free air convection thermal resistance (θ): Approximately 3.6 to 4 °C/W.
• Thermal time constant: Approximately 40 minutes/ 2400 seconds (thermal time constant
means that the Gold Eagle will reach 2/3 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 to 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