How to use the charts – ElmoMC ExtrIQ Gold Line Servo Drives-Gold Panther User Manual
Page 62
Gold Panther Installation Guide
MAN-G-PANIG-EC (Ver. 1.000)
|How to Use the Charts
62
Figure 34: Dissipation versus Current Graph for 330 VDC
7.3. How to Use the Charts
The power dissipation in the chart includes the losses of the rectifying bridge.
Regarding Figure 33 and Figure 34, the following should be noted:
DC Bus Voltage (VDC)
Rectified Voltage (VAC)
560
3X400
680
3X480
330
3X230
The charts above are based upon theoretical worst-case conditions. Actual test results show 30% to
50% better power dissipation.
To determine if your application needs a heat sink:
1.
Allow maximum heat sink temperature to be 80 °C or less (shunt down is 6 °C to 8 °C
higher).
2.
Determine the ambient operating temperature of the Gold Panther as ≤ 40 °C.
3.
Calculate the allowable temperature increase according to the following example: For an
ambient temperature of 40 °C, ΔT = 80 to 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.