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Rockwell Automation Publication 7000L-UM301F-EN-P - March 2020
309
Component Definition and Maintenance
Chapter 5
Figure 257 - SCR PowerCage Snubber Circuit Connections
Snubber and Sharing
Resistor Replacement
In the liquid cooled drive the sharing and snubber resistors can be replaced
independently. The sharing resistor is located in the same spot on every chill
block assembly, and the number of snubber resistors can vary with the drive
rating. The snubber and sharing resistors are part of the chill block assembly.
Servicing of resistors requires that the chill block be removed from the
PowerCage. Refer to
Chill Block Removal and Replacement on page 303
1.
Remove the chill block outlined in
Chill Block Removal and Replacement
2.
Note all connections for correct replacement.
3.
Remove the screws holding the bus bars to the resistor terminals. The
position of the sharing resistor is common on all drive sizes. The number
of snubber resistors varies with the size of drive and application. Shown
below is a three-snubber resistor configuration. There can be up to 5
snubber resistors on each chill block.
Anode
Chillblock
Cathode
Chilblock
Disconnect Points
Rsh-1
Rsn -1
Cs-1
Cs-2
Rsn -2
To Gate Driver Board
TP
Rsh-2
Содержание Allen-Bradley PowerFlex 7000
Страница 32: ...32 Rockwell Automation Publication 7000L UM301F EN P March 2020 Chapter 1 Overview of Drive Notes ...
Страница 90: ...90 Rockwell Automation Publication 7000L UM301F EN P March 2020 Chapter 2 Drive Installation Notes ...
Страница 174: ...174 Rockwell Automation Publication 7000L UM301F EN P March 2020 Chapter 4 Commissioning NOTES ...
Страница 264: ...264 Rockwell Automation Publication 7000L UM301F EN P March 2020 Chapter 4 Commissioning Notes ...
Страница 412: ...412 Rockwell Automation Publication 7000L UM301F EN P March 2020 Chapter 5 Component Definition and Maintenance ...
Страница 420: ...420 Rockwell Automation Publication 7000L UM301F EN P March 2020 Appendix A Catalog Number Explanation Notes ...
Страница 428: ...428 Rockwell Automation Publication 7000L UM301F EN P March 2020 Appendix C Meggering Notes ...
Страница 432: ...432 Rockwell Automation Publication 7000L UM301F EN P March 2020 Appendix D Preventative Maintenance Schedule Notes ...
Страница 433: ......