Rockwell Automation Publication 20B-IN017B-EN-P - September 2011 25
Chapter 3
Component Replacement Procedures
Precharge Board
Refer to the figures in Component Diagrams and Torque Specs on page 13 for
these instructions.
Remove Components
1. Read and follow the Safety Precautions on page 9 and Important Initial
Steps on page 11.
2. Remove the safety cover over the Precharge Board.
3. For DC input only: Verify that customer wiring to TB2 is properly
labeled and then disconnect wiring from TB2.
4. Using pliers if needed, remove the three (3) wiring/harnesses ( J1, J2, J3)
at the top of the board.
Note: Some connectors may not be properly labeled. Be sure to label
them appropriately.
5. Remove the Precharge Board mounting star screw located at the lower
left corner of the Precharge Board.
6. For AC input: Using your fingers or
needle-nose pliers, squeeze the wings
of each of the three spacers and
separate the Precharge Board from
the mounting plate.
7. For DC input: Turn each of the six
(6) lock screws 1/4 turn
counterclockwise to unlock.
8. Remove the Precharge Board.
Install Components
1. Install the new Precharge Board.
2. Reconnect wiring.
3. Replace all safety shields and enclosure covers before applying power to
the drive.
SpacersScrew
AC Input Shown
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