Converter snubber board - ac input only – Rockwell Automation 20B PowerFlex 700 Drive - Frame 7 Components Replacement User Manual
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Rockwell Automation Publication 20B-IN017B-EN-P - September 2011
Chapter 3 Component Replacement Procedures
Converter Snubber Board - AC
Input Only
Refer to the figures in
Component Diagrams and Torque Specs on page 13
these instructions.
Remove Components
1. Read and follow the
and
.
2. Locate the Converter Snubber Board to be replaced. (Some wires below
shown disconnected.)
Remove Main Control Panel Assembly on page 21
Remove Stacking Panel on page 22
Remove Precharge Board Assembly on page 23
6. For the T-Phase Converter Snubber Board, if the U-Phase Motor Bus
Bar must be removed for space considerations, then
•
If space allows, remove the U-Phase Current Transducer and then
disconnect both ends of the U Phase Motor Bus Bar and remove it
to gain access to the Converter Snubber Board.
•
Otherwise if space does
not allow, using the instructions in
Step 2.
…
Component Replacement Procedures on
, remove all three Current Transducer assemblies and move
them to a safe location, but do not disassemble them.
7. Label and disconnect any push-on wire connector from the Converter
Snubber Board to be replaced.
8. Remove the two (2) T30 screws that secure the board. Remove the
board and discard.
Install Components
1. Install the new Snubber Board. Torque screws to 2.9 N•m (26 lb•in)
2. Reconnect all wires.
3. If removed, reinstall the U Phase Motor Bus Bar and torque screws to
9.0 N•m (80 lb•in)
4. Reassemble remaining components in reverse order.
5. Replace all safety shields and enclosure covers before applying power to
the drive.
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