Rockwell Automation 7000 PowerFlex Medium Voltage AC Drive (B Frame) - Classic Control - Manual (Page 324)

6-34 Component Definition and Maintenance
7000-UM150I-EN-P – June 2013 7000 “B” Frame
Heatsink Replacement
There are 2 different styles of heatsinks used in the PowerFlex drive
depending on current ratings and thermal requirements. The lighter
aluminum heatsink has a very fine ventilation pattern through the
heatsink. The heavier copper heatsink has a basic ventilation pattern
with larger openings for airflow, and will often have a grill mounted
on the front of the heatsink to help restrict the flow.
Aluminum Heatsink Copper Heatsink
The copper heatsinks can weigh about 9kg (20 lbs.), while the
aluminum heatsinks will only weigh approximately 4kg (9 lbs.)
1. Ensure there is no power to the equipment.
A T T E N T I O N A T T E N T I O N To prevent electrical shock, ensure the main
power has been disconnected before working on
the drive. Verify that all circuits are voltage free
using a hot stick or appropriate voltage-
measuring device. Failure to do so may result in
injury or death.