Rockwell Automation 20P PowerFlex DC Drive - Frame A SCR Modules for Drive w/Power Traces Circuit Board - Manual (Page 16)

16 PowerFlex® DC Drive - Frame A SCR Modules for Drives with a Power Traces Circuit Board
Step 6: Remove the
Existing SCR Modules 1. Remove the two screws and washers that secure each SCR Module to
the heatsink and remove the SCR Modules.
Step 7: Install the New
SCR Modules Install the new SCR modules in reverse order of removal as detailed in Step
6:
Remove the Existing SCR Modules above.
Important: Verify that each SCR Module is orientated in the same position
as it was prior to removal.
Important: Thermal grease must be applied to the bottom of the SCR
modules before securing them to the heatsink.
Use the following table to determine the proper tightening torque for the
SCR Modules installed.
=
Regenerative drive
Non-Regenerative drive
Remove screws
Remove screws
230V AC Input 460V AC Input
Part Number Final Torque Part Number Final Torque
SK-20P-S7F44 2.5…4 N•m (22…35.4 lb•in) SK-20P-S7F73 2.5…4 N•m (22…35.4 lb•in)
SK-20P-S7F45 2.5…4 N•m (22…35.4 lb•in) SK-20P-S7F74 2.5…4 N•m (22…35.4 lb•in)