Marathon Electric DVR 2000E+ - Page 47

47
Marathon Electric (a division of RBC Manufacturing Corp.) reserves the right to change specications and this manual without notice.
Revised 06/2011
Step 6. Verify that the DVR
®
2000E+ soft start settings are correct. Too long of a soft start setting may give the
appearance of no buildup.
  Ifthesoftstartsettingsareincorrect,adjustthesettings.
If the soft start settings have no effect, proceed to Step 7.
Step 7. Further system troubleshooting may be required. If it is determined that the rest of the system is not the
source of the problem, the DVR
®
2000E+ may need to be replaced.
Low Generator Output Voltage
Step1. Verifythatthevoltageadjustmentisnotsettoolow.
  Ifthevoltageadjustmentistoolow,adjustittothecorrectsetpoint.
  Ifthevoltageadjustmentiscorrect,proceedtoStep2.
Step 2. Verify that the under frequency knee set point is not greater than the generator frequency.
  Iftheunderfrequencysetpointistoohigh,adjustthesetpointbelowtheratedgeneratorfrequency.
If the under frequency set point is correct, proceed to Step 3.
Step 3. Verify that the generator is spinning at rated speed.
If the generator is not up to rated speed, increase the generator speed to the rated level.
If the generator is spinning at rated speed, proceed to Step 4.
Step 4. Check for correct input power to the DVR
®
2000E+. Refer to Section 1 (General Information,
Specifications) for input power requirements.
If the DVR
®
2000E+ input voltage is low, refer to the PMG manual.
If the voltage is at the required level, proceed to Step 5.
Step 5. Verify that the sensing potential transformer (if used) has the correct turns ratio and is operating
correctly.
If the turns ratio of the sensing potential transformer is incorrect, replace the sensing potential
transformer.
If the sensing potential transformer is operating correctly, proceed to Step 6.
Step 6. 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 6 until all alarm and fault conditions have been resolved. When the display shows a status
of RUN, the regulator is functioning properly. If the generator voltage is still low, proceed to Step 7.
Step 7. Low generator output voltage may occur when operating in droop mode with an inductive load. Refer
to Section 3 – Features and Protection for more information about the Load Sharing function.
If the low voltage condition is not caused by the droop function, proceed to Step 8.
Step 8. Low generator output voltage may occur when the regulator input is being influenced by the auxiliary in-
put. Refer to Section 3 – Features and Protection for more information about the Auxiliary Input function.
If the low voltage condition is not caused by the auxiliary input, proceed to Step 9.