Rockwell Automation SA500 DC Bus Supply User Manual
Page 27
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Diagnostics and Troubleshooting
4-3
open. If the fuse is blown, install a replacement that has the proper ratings.
Fuse specifications are provided in Appendix A.
Step 6. Re-install the bus supply’s front cover. Rotate the quarter-turn cover screws
to the closed position.
Step 7. Re-apply AC input power and test the bus supply for proper operation.
If the DC bus overvoltage condition continues to occur, check the braking
resistor to see if it is open or shorted.
Figure 4.1 – DC Bus Braking Fuse
Replaceable DC Bus
Braking Fuse
(with cover removed)
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