
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
Board on page 5.
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.
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