Rockwell Automation 20P PowerFlex DC Drive - Frame A Pulse Transformer Circuit Board User Manual
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PowerFlex® DC Drive - Frame A Pulse Transformer Circuit Board
Step 6: Install the New 
Pulse Transformer Board 
and Existing Switching 
Power Supply Board
1. Install the new Pulse Transformer board and existing Switching Power
Supply board in reverse order of removal as detailed in Step 4:
the Pulse Transformer and Switching Power Supply Boards on page 6
.
2. Install the new Isolation sheet (if present) before installing the Pulse
Transformer and Switching Power Supply boards.
3. Replace the gate lead cables with the new cables provided.
4. Inspect the existing connection cables for burn marks, cracks or loose
connectors. If necessary, replace the cables connected to connector X3, 
X4 (for drives with a fan) and XP on the Pulse Transformer board with 
the new cables provided.
Step 7: Install the Control 
EMI Shield and Control 
Board
Install the Control EMI Shield and Control board in reverse order of 
removal.
ATTENTION: Failure to install the Isolation sheet below the 
Pulse Transformer and Switching Power Supply boards may 
result in damage to the drive.
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.