Step 8: install the bus bars – Rockwell Automation 20P PowerFlex DC Drive - Frame A SCR Modules for Drives with Bus Bars User Manual
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PowerFlex® DC Drive - Frame A SCR Modules for Drives with Bus Bars
17
Step 8: Install the Bus 
Bars
Install the bus bars in reverse order of removal as detailed in Step 5:
Remove the Bus Bars on page 11
Use the following table to determine the proper tightening torque for the bus 
bars to SCR Modules connections.
Step 9: Install the Pulse 
Transformer and Switching 
Power Supply Boards
Install the Pulse Transformer and Switching Power Supply boards in reverse 
order of removal as detailed in Step 4: 
Remove the Pulse Transformer and
Switching Power Supply Boards on page 7
.
Step 10: Install the Control 
EMI Shield and Control 
Board
Install the Control EMI Shield and Control board in the reverse order of 
removal as detailed in Step 3: 
Remove the Control EMI Shield and Control
.
230V AC Input
460V AC Input
Part Number
Final Torque
Part Number
Final Torque
SK-20P-S7F46
2.5…4 N•m (22…35.4 lb•in)
SK-20P-S7F75
2.5…4 N•m (22…35.4 lb•in)
SK-20P-S7F47
2.5…4 N•m (22…35.4 lb•in)
SK-20P-S7F77
2.5…4 N•m (22…35.4 lb•in)
ATTENTION: Each gate lead cable must be connected to the 
exact connector from which it was removed on the Pulse 
Transformer circuit board or damage to the drive may occur.