Marathon Electric DVR 2000E+ - Page 51

51
Marathon Electric (a division of RBC Manufacturing Corp.) reserves the right to change specications and this manual without notice.
Revised 06/2011
Loss of Generator Sensing (f011) is displayed on the HMI
Step 1. Verify that the voltage sensing leads are properly connected.
If the sensing leads are not properly connected, correct the connections.
If the sensing lead connections are correct, proceed to Step 2.
Step 2. Verify that the sensing leads E1, E2 and E3 are all connected per the appropriate figure in Section 4 for
the regulator mode being used.
If E2 and E3 are not connected properly, connect them per the appropriate figure in Section 4.
If E2 and E3 are properly connected, proceed to Step 3.
Step 3. Verify that the sensing potential transformer (if used) has the correct turns ratio and is functioning
properly.
If the sensing potential transformer has the wrong turns ratio or is malfunctioning, replace it.
If the sensing potential transformer is correct and functioning properly, proceed to Step 4.
Step 4. Verify that the generator output voltage is present on all phases.
If the generator is missing a phase, refer to the generator manual for further system troubleshooting.
If generator output voltage is balanced on all phases, proceed to Step 5.
Step 5 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.
Field Current Limiting (f010) is displayed on the HMI
Step 1. Check for generator overloading.
If the generator is operating with a larger than rated load, shed load.
If the generator is operating at rated or less than rated load, proceed to Step 2.
Step 2. Verify that the DVR
®
2000E+ Field Current Limit is not set too low.
  Iftheoutputcurrentlimitsetpointistoolow,adjustforthepropersetting.
If the output current limit is set properly, proceed to Step 3.
Step 3. Verify that the generator exciter field is not shorted.
If the generator exciter field is shorted, replace the generator exciter.
If the generator exciter field is not shorted, proceed to Step 4.
Step 4. 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.
Generator Under Frequency Alarm (a015) is displayed
Step 1. Verify that the generator is operating at rated speed.
  Ifthegeneratorisnotoperatingatratedspeed,adjustthegeneratorspeed.
If the generator is operating at the rated speed, proceed to Step 2.
Step 2. Verify that the under frequency set point is correct.
  Iftheunderfrequencysetpointisincorrect,adjustittothecorrectvalue.