ElmoMC Gold Line Digital Servo Drives-Gold Bell - Manual (Page 71)

Gold Bell Installation Guide Installation
MAN-G-BELIG (Ver. 1.004)
www.elmomc.com
71
4.14.2. Heat Dissipation Data
Heat dissipation is shown graphically below:
4.14.3. How to Use the Charts
The charts above are based upon theoretical worst-case conditions. Actual test results show
30% – 50% better power dissipation.
To determine if your application needs a heatsink:
1. Allow the maximum heatsink temperature to be 80 °C or less.
2. Determine the ambient operating temperature of the Gold Bell.
3. Calculate the allowable temperature increase as follows:
 For an ambient temperature of 40 °C, ΔT= 80 °C – 40 °C = 40 °C.
4. Use the chart to find the actual dissipation power of the drive. Follow the voltage curve to
the desired output current and then find the dissipated power.
5. If the dissipated power is below 4 W, the Gold Bell will not need additional cooling.
Note: The chart above shows that no heatsink is needed when the heatsink temperature is
80°C, the ambient temperature is 40 °C and the heat dissipated is 4 W.
Whistle 100 Series Power Dissipation
0.0
1.0
2.0
3.0
4.0
5.0
6.0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
Peak Current (A)
Pow
er
D
is
si
pa
tion (
W
)
85VDC
70VDC
50VDC
Standard 40 °C Ambient Temp.
Heatsink
Required
Heatsink
not Required
Gold Bell