1900

UnclassifiedLubrication

What This Code Means

Undervoltage (both zero crosses missing for 1.5 seconds); Undervoltage (little / no voltage, <120V); Undervoltage (no field current but have DPE); Generator Shuts Down for Under Voltage; No RPM pulses sensed for 75 consecutive milliseconds while starter active; Cranking faults to RPM sensor loss; Starter engaged, no tooth pulses for 75 ms; While running, no tooth pulses for 75 consecutive milliseconds; Unit Overloaded or Fuel System issue; Low Fuel Pressure; Throttle Stuck Closed/near Closed; Undervoltage; No pulse during cranking (RPM sensor); No tooth pulses sensed for 75 consecutive milliseconds while starter active; No pulse during running (RPM sensor); Loss of RPM sensor signal while running; Missing pulses during cranking (RPM sensor); Missing pulses during running (RPM sensor); Underspeed condition detected (<83.3% speed (60 Hz) or <66.6% speed (50 Hz) for 30 seconds); Unit overloaded slowing engine speed; Underspeed condition detected; Low fuel pressure detected for 1200 ms bef

Possible Causes

  • Faulty excitation winding
  • Faulty zero cross circuit
  • Circuit in general
  • Loose wiring
  • Field boost hardware failure
  • Controller measuring no voltage
  • Wire loose
  • Brush failure
  • Faulty Main Circuit Breaker
  • Faulty Fixed Excitation Circuit
  • Faulty Rotor Insulation Resistance
  • Faulty Regulator Output
  • Faulty AC Sensing Circuit
  • Faulty Brushed Rotor Assembly
  • Faulty Stator
  • Faulty DPE Breaker
  • Faulty DPE Circuit
  • Faulty Flash Wiring
  • Faulty DB1 Diode
  • Faulty DB2 Diode

Suggested Actions

  1. 1Test Main Circuit Breaker
  2. 2Test Fixed Excitation
  3. 3Perform Rotor Insulation Resistance Test
  4. 4Test Regulator Output
  5. 5Test AC Sensing Circuit
  6. 6Test Brushed Rotor Assembly
  7. 7Test Stator
  8. 8Test DPE Breaker
  9. 9Test DPE Circuit
  10. 10Test Flash Wiring
  11. 11Test DB1 Diode
  12. 12Test DB2 Diode
  13. 13Test Wire 14 Field Flash Circuit
  14. 14Test Field Flash Circuit
  15. 15Replace Controller
  16. 16Replace Stator Only
  17. 17Replace Rotor Only
  18. 18Replace Rotor and Stator
  19. 19Repair or Replace Wire 14
  20. 20Repair or Replace Rotor

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