ElmoMC SimplIQ Digital Servo Drives-Drum HV - Manual (Page 65)

Drum HV (High Voltage) Installation Guide Installation
MAN-DRU-HVIG (Ver. 1.602)
www.elmomc.com
65
3.7.3. How to Use the Charts
The power dissipation in the chart includes the losses of the rectifying bridge.
Regarding Figure 28 and Figure 29, 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 Drum HV (High Voltage) 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.
3.8. Initializing the System
After the Drum HV (High Voltage) has been connected and mounted, the system must be set
up and initialized. This is accomplished using the Composer, Elmo’s Windows-based software
application. Install the application and then perform setup and initialization according to the
directions in the Composer Software Manual.