Rockwell Automation 1391 INSTR/DIGITAL AC SERVO DRIVE - Manual (Page 4)

1391-DES Circuit Board Replacement
Instructions
A Quad B Board Substitution
1. Remove all power to the drive branch circuit.
2. Remove the front cover from the drive. Label and remove the ribbon
cables and signal connectors (TB1, TB2 and TB3) from the A Quad B
and Logic Control Boards.
3. Remove the Display and Logic Control Boards per previous
instructions.
4. Remove the A Quad B Board per previous instructions.
5. Install the new A Quad B Board to the Logic Control Board with the 8
thumb screws.
6. Install the Logic Control Board (w/AQB Board) verifying that the
connectors between the boards mate. Tighten the 8 screws.
7. Install the Display Board and cable.
8. Reconnect the signal connectors/cables previously removed.
9. Apply power to the system and check for proper operation – tuning is
not required.
Publication 1391-5.6 – May, 1993 P/N 155558
Copyright 1993, Allen-Bradley Company, Inc. Printed in U.S.A.
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