Marathon Electric DVR 2000E+ - Section 7: Maintenance and Troubleshooting; Troubleshooting Common Issues

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Marathon Electric (a division of RBC Manufacturing Corp.) reserves the right to change specications and this manual without notice.
Revised 06/2011
SECTION 7 – MAINTENANCE AND TROUBLESHOOTING
PREVENTATIVE MAINTENANCE
The only preventive maintenance required on the DVR
®
2000E+ is to periodically check that the connections
between the DVR
®
2000E+ and the system are clean and tight. The only user serviceable part on this regulator is
the fuse. Marathon Electric recommends that no repair procedures, other than replacing the fuse if needed, be
attempted by anyone other than Marathon Electric personnel.
TROUBLESHOOTING
If you do not get the results that you expect from the DVR
®
2000E+, first check the programmable settings for
the appropriate function. Use the following troubleshooting procedures when difficulties are encountered in the
operation of your excitation system.
Generator Voltage Does Not Build Above Residual
Step 1. Verify that all wiring is properly connected. Refer to Figures 4-5 through 4-9.
If wiring is improperly connected or loose, reconnect wiring properly.
If wiring is connected properly, proceed to step 2.
Step 2. Verify that the generator is spinning at rated speed.
  Ifthegeneratorisnotuptoratedspeed,adjustgeneratorspeedtotheratedvalue.
If the generator is spinning at rated speed, proceed to Step 3.
Step 3. Check for correct input power to the DVR
®
2000E+. Refer to Section 2, Specifications, for input power
requirements.
If proper voltage is not present, refer to the generator manual for repair procedures.
If proper voltage is present, proceed to Step 4.
Step 4. Verify that the fuse is not open.
Replace open fuse.
If fuse is not open, proceed to Step 5.
Step 5. Verify that the front panel display is not indicating an alarm or fault status. If the display indicates an
alarm or fault status, refer to Appendix A – Alarm and Fault Codes to determine what alarm or fault
conditionisbeingindicated.Checkthegeneratorand/orloadconditions.Determinewhatiscausing
the alarm or fault condition and resolve the issue. Interrupt input power or shutdown the generator for a
minimum of 30 seconds.
Repeat Step 5 until all alarm and fault conditions have been resolved. When the display shows a
status of PYN, the regulator is functioning properly. If the generator voltage still does not build,
proceed to Step 6.