Invertek OPTIDRIVE Coolvert - Page 11

Version 1.00 | Optidrive CoolVert User Guide | 11www.invertekdrives.com
3
Installation
3.1.8. Panel mounting the cold-plate variant
The Optidrive Coolvert is also available without a heatsink but with a coldplate that needs to be mounted onto a heat transfer surface,
removing the drive losses and maintaining the coldplate temperature as shown in the table in section 3.1.9. Cold-plate Capacity
Calculation on page 11.
L1 L2 L3 U V WEMC
ABC
D
G
E
F F
J
H
1 2 3 4 5 6 7 8 9 10 11
STAT US 1
STAT US 2
L1 L2 L3 U V WEMC
++
++
A B C D E F G H J
mm in mm in mm in mm in mm in mm in mm in mm in mm in
226.3 8.9 215 . 2 8.5 201.4 7. 9 165.3 6.5 90 3.5 37. 6 1.48 115 . 5 4.5 103.5 4.1 9.5 0.37
Tightening Torques
Required Torque
Control Terminals 0.5 Nm 4.5 lb-in
Power Terminals 1 Nm 9 lb-in
3.1.9. Cold-plate Capacity Calculation
The coldplate variants of the Optidrive Coolvert are designed to be mounted to a metallic, heat conducting surface, removing the
heat generated as losses within the drive. Thermostrate or heat transfer compound must be added to ensure optimal heat transfer and
minimum thermal resistance.
In order to ensure that the drive remains within the design temperatures, the following information should be considered when
designing the system:
Select the desired PWM operating frequency from the available options in Parameter P5-06
Determine the maximum permissible drive temperature, T
MAX
from table X below
Calculate the motor absorbed electrical power, P
MOT
, based on the motor rated voltage, current and efficiency
P
MOT
= √3 * Rated Voltage * Rated Current * Power Factor * Efficiency
Calculate the losses in the drive, P
LOSS
, based on the required motor power
P
LOSS
= P
MOT
* (1 - Drive Efficiency)
Typical drive efficiency values are shown in the table below for each available effective switching frequency: