Power Dissipation; Heat Sink Installation; Steps To Install - Copley Controls Xenus R10 Manual

POWER DISSIPATION

The charts on this page show the drive's internal power
dissipation for different models under differing power supply
and output current conditions. Drive output current is calculated
from the motion profile, motor, and load conditions. The values
on the chart represent the rms (root-mean-square) current that
the drive would provide during operation. The +HV values are
for the average DC voltage of the drive power supply.
To see if a heatsink is required or not, the next step is to
determine the temperature rise the drive will experience when
it's installed. For example, if the ambient temperature in the
drive enclosure is 40 °C, and the heatplate temperature is to
be limited to 80° C or less to avoid shutdown, the maximum
rise would be 80C - 40C. or 40° C. Dividing this dissipation
by the thermal resistance of 9º C/W with no heatsink gives
a dissipation of 4.4 W. This line is shown in the charts. For
power dissipation below this line, no heatsink is required.
The vertical dashed line shows the continuous current rating
for the drive model.
AEM-090-06 Dissipation R42-
8.00 W
7.00 W
6.00 W
Heatsink or forced-air
required
5.00 W
40C ambient
4.00 W
3.00 W
2.00 W
1.00 W
0.00 W
disabled
HEATSInk InSTAllATIon
If a heatsink is used it is mounted using the same type of screws used to mount the drive without a heatsink but slightly longer. Phase
change material (PSM) is used in place of thermal grease. This material comes in sheet form and changes from solid to liquid form as
the drive warms up. This forms an excellent thermal path from drive heatplate to heatsink for optimum heat transfer.

STEPS To InSTAll

1. Remove the PSM (Phase Change Material)
from the clear plastic carrier.
2. Place the PSM on the Accelnet aluminum
heatplate taking care to center the PSM
holes over the holes in the drive body.
3. Mount the heatsink onto the PSM again
taking care to see that the holes in the
heatsink, PSM, and drive all line up.
4. Torque the #4-40 mounting screws to
3~5 lb-in (0.34~0.57 N·m).
Copley Controls, 20 Dan Road, Canton, MA 02021, USA
Tech Support: E-mail: sales@copleycontrols.com, Internet: http://www.copleycontrols.com
Accelnet
no heatsink
3 A
0.0 A 2.5 A 5.0 A
Current
R42
Plus
30.00 W
25.00 W
20.00 W
15.00 W
10.00 W
Heatsink or forced-air
required
5.00 W
0.00 W
disabled 0.0 A
12.00 W
10.00 W
8.00 W
Heatsink or forced-air
80V
required
65V
6.00 W
50V
35V
40C ambient
20V
4.00 W
2.00 W
0.00 W
disabled
#4-40 Mounting Screws
Heatsink
R42 Drive
Tel: 781-828-8090
Ruggedized digital seRvo dRive
foR BRushless/BRush MotoRs
AEM-090-30 Dissipation
R42-
40C ambient
no heatsink
2.5 A 5.0 A 7.5 A 10.0 A 12.5 A
Current
R42-
AEM-090-14 Dissipation
no heatsink
0.0 A 2.5 A 5.0 A
Current
Phase Change Material
Transparent Carrier
(Discard)
Fax: 781-828-6547
Page 24 of 26
RoHS
80V
65V
50V
35V
20V
15 A
15.0 A
80V
65V
50V
35V
20V
7 A
7.5 A