Table of Contents
Advertisement
Chapter 5
CGCM-DLR Unit Startup
Document Configuration
Parameter and Wiring
Changes
138
5. Set the Shorted Diode Level to a value that is 50 times the highest normal
percent ripple that is found earlier.
The multiplier can be varied from 40...70 to adjust the trip margin.
Regardless of the calculated value, the level has a maximum value of 70. A
reduction of the multiplier can result in nuisance EDM shorted diode
indications.
6. Set the EDM time delays as desired.
7. Disable excitation and shut down the prime mover.
8. To create an open diode condition, disconnect one diode.
9. Start the prime mover, enable excitation, and verify that the CGCM-DLR
unit annunciates an open diode fault.
10. Disable excitation and shut down the prime mover.
11. Reconnect the diode that is disconnected earlier.
12. Start the prime mover, enable excitation, and verify that the unit no longer
annunciates an open diode fault.
When all tests have been performed and all adjustments are complete, use the
configuration record to document the installed configuration. Use the system
design documentation to identify changes that are made to CGCM-DLR
unit-related wiring.
See
Appendix F
for the configuration record.
Rockwell Automation Publication 1407-UM002B-EN-P - February 2019
Advertisement
Table of Contents
