HomeCummins/OnanCummins/Onan DGDA

Cummins/Onan DGDA Generator Set

The Cummins/Onan DGDA is a 40 kW (50 kVA) Diesel standby generator set powered by a Cummins/Onan 6BT5.9 engine. It is available at 12 V, three-phase-phase and 50 Hz. It holds about 16 L (4.2 gal) of oil and 31.5 L (8.3 gal) of coolant, with a maximum ambient rating of 104 °C. Starting uses 1 group-4 battery rated 1080 CCA at 12 V. The set measures 2662×1016×1252 mm (104.8×40.0×49.3 in) and weighs about 1141 kg (2515 lb). An integrated tank holds 25 L (6.6 gal). The same 6BT5.9 engine also powers generator sets from AKSA.

40 kW
Standby
5.9 L
Displacement
16.0 L
Oil capacity
4
Document types

How to read your Cummins/Onan serial & model number →

Specifications

FuelDiesel
Frequency50.0 Hz
Standby power40 kW
Standby kVA50
Prime power32 kW
ControllerPCC, PowerCommand, PowerCommand 2100, PowerCommand 3100
Oil capacity16.0 L
Voltage options12 V
Phase3
Power factor0.8
Battery group4D
Battery cranking1080 CCA
Battery voltage12 V
Battery quantity1
Coolant capacity31.5 L
Max ambient104 °C
Dimensions (L×W×H)2662×1016×1252 mm
Dry weight1141 kg
Fuel tank25.0 L

Engine

Cummins/Onan 6BT5.9
Oil capacity16.0 L
Coolant capacity25.0 L
Displacement5.9 L

Maintenance & consumables

for the Cummins/Onan 6BT5.9
ItemSpecCapacityPart #Interval
Air filterReplace yearly or sooner if the service indicator button pops up indicating air restriction8760 hr find
Fuel filterSpin-off throw-away units, filled with diesel fuel and put a light coat of fuel on the sealing gasket100 hr find
Oil filterSpin-off throw-away units, filled with diesel fuel and put a light coat of fuel on the sealing gasket500 hr find
Belt find
Coolant21.0 litres
Coolant filter find
OilAPI Class CC/CD with a maximum sulphated ash content of 1.85 percent17.3 quarts500 hr

Common questions

What is the power rating of the Cummins/Onan DGDA?

The Cummins/Onan DGDA is rated 40 kW standby (50.0 kVA).

What engine does the Cummins/Onan DGDA use?

The Cummins/Onan DGDA is powered by the Cummins/Onan 6BT5.9 engine.

What fuel does the Cummins/Onan DGDA use?

The Cummins/Onan DGDA runs on Diesel.

What is the oil capacity of the Cummins/Onan DGDA?

The Cummins/Onan 6BT5.9 engine in the Cummins/Onan DGDA has an oil capacity of 16.0 liters.

Troubleshooting

78

Fault codes

CodeMeaningRemedy
234Overspeed
1433Emergency Stop
1434Remote Emergency Stop
121Speed Signal Lost
2335Excitation Fault
1123Shutdown After Battle Short
1416Fail To Shut Down
1131Battle Short Active
Fault Code TableStatus Indicators
engine has overheated (engine temperature has risen above 230°F/110°C) or coolant level is low (sets with coolant level sensor).Indicates engine has overheated (engine temperature has risen above 230°F/110°C) or coolant level is low (sets with coolant level sensor).A. Allow engine to cool down completely before proceeding with the following checks: - Check coolant level and replenish if low. - Look for possible coolant leakage points and repair as necessary. - Correct as necessary. - Contact an Onan Dealer or Distributor if none of the above. b. Check for obstructions to cooling airflow c. Check for a slipping fan belt and tighten if necessary d. Reset control and restart after locating and correcting problem.
PRE LO OIL PRESIndicates engine oil pressure is marginally low.
PRE HI ENG TEMPIndicatesengine temperature is marginally high.
LO OIL PRESIndicates engine has shut down because of critically low oil pressure.
HI ENG TEMPIndicates engine has shut down because of critically high temperature.
OVERSPEEDIndicates engine has shut down because of excessive speed.
OVERCRANKIndicates engine has shut down because of a failure to start during the cranking period.
FAULT 1An undedicated fault. May be factory programmed as a shutdown or non-shutdow.n, and as a timed or non-timed fault. (Normally set for timed shutdown).
FAULT 2Same features as Fault 1 (Normally set for timed shutdown).
LOW ENG TEMPEngine temperature is marginally low for starting. Indicates inoperative coolant heater.
LO FUELIndicates fuel supply is marginally low.
SWITCH OFFIndicates generator set is not in automatic start operation mode.
135Oil Pressure Sensor High
141Oil Pressure Sensor Low
143Pre-Low Oil Pressure Sensor
144Coolant Temperature Sensor High
145Coolant Temperature Sensor Low
146Pre-High Cool Temp
151High Coolant Temp
197Low Coolant Level
235Low Coolant Level
359Fail to Start
415Low Oil Pressure
441Low Battery Voltage
442High Battery Voltage
1124Delayed Shutdown
1244Engine Normal Shutdown
1311Customer Inputs #1
1312Customer Inputs #2
1317Customer Inputs #3
1318Customer Inputs #4
1334Crit Scaler OR
1335Non-Crit Scaler OR
1417Power Down Failure
1435Low Coolant Temperature
1438Fail to Crank
1442Weak Battery
1443Battery Failed
1444KW Overload
1445Short Circuit
1446High AC Voltage
1447Low AC Voltage
1448Under Frequency
1449Over Frequency
1461Loss of Field
1466Modem Failure
1468Network Error
1469Speed/Hz Match
1471Over Current
1472Over Current
2336Memory Error
2341High Control Temperature
2342Too Long in Idle
2967Governor Fault
2968AVR Fault
2969LON Failure
2972Field Overload

Symptoms & remedies

SymptomCauseRemedy
Indicates engine has begun to overheat and engine temperature has risen to approximately 220°F (105°C).A. Reduce load if possible by turning off non-critical loads. b. Check air inlets and outlets and remove any obstructions to airflow. c. Open doors or windows in generator area to increase ventilation.
Indicates engine oil pressure has dropped to 20 psi (138 kPa).If generator is powering critical loads and cannot be shut down, wait until next shutdown period and then follow step 5 procedure. If engine can be stopped, follow procedures in step 5.
Indicates engine oil pressure has dropped to 14 psi (97 kPa).Check oil level, lines and filters. If oil system is okay but oil level is low, replenish. Reset control and restart. Contact an Onan Dealer or Distributor if oil pressure is not in the range of 35 to 55 psi (241 to 379 kPa).
OVERCRANK lamp lights and engine stops cranking.Indicates possible fuel system problem.A. Check for empty fuel tank, fuel leaks, or plugged fuel lines and correct as required. b. Check for dirty or plugged air filter and replace if necessary (see MAINTENANCE section). c. Refer to Step 5. d. Reset the control and restart after correcting the problem. Contact an Onan Dealer or Distributor for service if none of the above.
Engine runs and then shuts down, OVERSPEED lamp lights.Indicates engine has exceeded normal operating speed. Contact an Onan Dealer or Distributor for service.
SWITCH OFF lamp flashes.Indicates Run/Stop/Remote switch is in the Stop position which will prevent automatic starting if an automatic transfer switch is used. Move the Run/Stop/Remote switch to the Remote position for automatic starting.
LO FUEL lamp lights. Engine continues to run.Indicates engine has run out of fuel. Check fuel level and replenish as required.
LO FUEL lamp lights. Engine shuts down and LO OIL PRES lamp lights.Indicates engine has run out of fuel. Check fuel level and replenish as required.
LO ENG TEMP lamp lights. Set is in 1 I 2-Light Panel Only.Indicates engine coolant heater is not operating or is not circulating coolant. Check for the following conditions: a. Coolant heater not connected to power supply. Check for blown fuse or disconnected heater cord and correct as required. b. Check for low coolant level and replenish if required. Look for possible coolant leakage points and repair as required. c. Contact an Onan Dealer or Distributor if none of the above.
The FAULT 1 or FAULT 2 fault lamp lights. Engine shuts down immediately, engine runs for several seconds and then shuts down, or engine continues to run.The standard undesignated fault functions are programmed to shut down the set when a fault is sensed. Fault 1 is time delayed while Fault 2 is immediate. The nature of the fault is an optional selection that is determined when the set installation is designed. The undesignated fault functions may also be programmed for non-shutdown or non-time delay.
Fault lamp lights but no fault exists. Engine gauges show oil pressure, engine temperature, and frequency (speed) are within normal limits.The monitor board or a sensor may be at fault. Contact an Onan Dealer or Distributor for service.
Engine will not crank.Remote circuit breaker is tripped, Reset breaker and restart. Contact an Onan Dealer or Distributor if breaker trips after resetting.

Fault codes and symptom→remedy steps extracted from this model’s service/owner documentation; verify against the official manual before servicing.

Parts

16
Part #DescriptionQtySystem
191-1983-02Alternator, 24 Volt Spec B-O (Prestolite)1Alternator PartsGeek
191-i962-02Starter, Negative Ground 24 volt Spec B-F1Starter PartsGeek
191-i981.1Alternator, 24 Volt Spec E-H (Bosch)Alternator PartsGeek
LF3349Lube, Full-Flow Spin-On1Lube filter Amazon eBay $15.44 PartsGeek
M-1695Oil temperature senderSensor PartsGeek
S103Selector switchSwitch PartsGeek
928-0502BService part / kit PartsGeek
928-0506Service part / kit PartsGeek
960-0135Service part / kit PartsGeek
960-0136Battery, 24V, 55Ah, AGM8Service part / kit PartsGeek
960-0504AService part / kit PartsGeek
960-0505Service part / kit PartsGeek
960-0627CService part / kit PartsGeek
960-12Service part / kit PartsGeek
TB1-6Control box terminal (TB1-6)*Service part / kit PartsGeek
TB1-7B+ OUTPUTService part / kit PartsGeek

Service, wear & replacement parts referenced for this model and its engine — confirm the exact part for your serial number. See the full parts catalog to search and cross-reference.

Fuel consumption

RatingLoadL/hgal/h
Prime
Standby

Available documents

Spec sheet — 6B 60HZ 76~105kw (Cummins/Onan)Spec sheet — Cummins-DGDA-spec-sheet (Cummins/Onan)Operator's manual — 960-0107 Cummins DGBB DGCB DGDB DGFA Operator's Manual (7-2009) (Cummins/Onan)Parts manual — 0932-0112 Onan Post-Sale Literature Index (07-1998) (Cummins/Onan)Parts manual — 0960-0211 I8 201410 (Cummins/Onan)Parts manual — 0960-0232 I4 201209 (Cummins/Onan)Parts manual — 0960-0290 I7 201603 (Cummins/Onan)Parts manual — 960-0208 Onan DGDA DGDB Parts Manual (3-1996) (Cummins/Onan)Parts manual — 960-0211 Onan DGDA DGFA Series Parts Manual (12-1998) (Cummins/Onan)Parts manual — 960-0232 Onan DGDA DBBT BT61 BT62 Parts Manual (3-1993) (Cummins/Onan)Service manual — 900-0524B Onan DGxx Power Command Control 3100 Series Paralleling Gensets Operation & Service manual (01-2002) (Cummins/Onan)Service manual — 960-0164 Cummins DGDA DGDB DGDK Operator's Manual (11-2010) (Cummins/Onan)Service manual — 960-0505 Onan DGxx QSxx Detector Controls Generator Set Service Manual (04-2001) (Cummins/Onan)Service manual — 960-0510B Onan DGBB thru DGFC Series Service Manual (10-1998) (Cummins/Onan)Service manual — 960-0511B Cummins DGBB DGC DGD DGF Series Service Manual (10-2001) (Cummins/Onan)Service manual — 960-0518D Cummins DGBB DGC DGDA DGFB Series Service Manual (2-2004) (Cummins/Onan)Service manual — 960-0627C Cummins DGDA DGDB DGDK Installation Manual (2-2004) (Cummins/Onan)Service manual — DG Generator Set Service Manual PCC 3100 (Cummins/Onan)