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Home›Cummins/Onan›Cummins/Onan 1120 DFLC

Cummins/Onan 1120 DFLC Generator Set

The Cummins/Onan 1120 DFLC is a 1120 kW (1400 kVA) Diesel standby generator set powered by a Cummins/Onan KTA 50 G3 engine. It is available at 380 V, Single-phase and 50 Hz. It holds about 177 L (46.8 gal) of oil and 351 L (92.7 gal) of coolant, with a maximum ambient rating of 40 °C. The set weighs about 10300 kg (22708 lb). An integrated tank holds 2000 L (528.3 gal).

1120 kW
Standby
50.3 L
Displacement
177.0 L
Oil capacity
2
Document types

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

Specifications

FuelDiesel
Frequency50.0 Hz
Standby power1120 kW
Prime power1120 kW
Controller3100, PCC PowerCommand, PowerCommand 2100
Oil capacity177.0 L
Voltage options380 V, 440 V
PhaseSingle
Battery voltage24 V
Coolant capacity351 L
Max ambient40 °C
Dry weight10300 kg
Fuel tank2000.0 L

Engine

Cummins/Onan KTA 50 G3
Oil capacity254.0 L
Coolant capacity351.0 L
Displacement50.3 L
AspirationTurbocharged-Aftercooled
Rated speed1800 rpm

Maintenance & consumables

for the Cummins/Onan KTA 50 G3
ItemSpecCapacityPart #Interval
Air filter— find
Fuel filter— find
Oil filter— find
Belt— find
Coolant440.0 l—
OilLube Oil Filter Types: Five spin-on, full flow177.0—

Common questions

What is the power rating of the Cummins/Onan 1120 DFLC?

The Cummins/Onan 1120 DFLC is rated 1120 kW standby.

What engine does the Cummins/Onan 1120 DFLC use?

The Cummins/Onan 1120 DFLC is powered by the Cummins/Onan KTA 50 G3 engine.

What fuel does the Cummins/Onan 1120 DFLC use?

The Cummins/Onan 1120 DFLC runs on Diesel.

What is the oil capacity of the Cummins/Onan 1120 DFLC?

The Cummins/Onan KTA 50 G3 engine in the Cummins/Onan 1120 DFLC has an oil capacity of 254.0 liters.

Troubleshooting

53

Fault codes

CodeMeaning
121Speed Signal Lost
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
234Overspeed
235Low Coolant Level
359Fail to Start
415Low Oil Pressure
441Low Battery Voltage
442High Battery Voltage
1123Shutdown After Battle Short
1124Delayed Shutdown
1131Battle Short Active
1244Engine Normal Shutdown
1311Customer Inputs #1
1312Customer Inputs #2
1317Customer Inputs #3
1318Customer Inputs #4
1334Crit Scaler OR
1335Non-Crit Scaler OR
1416Fail to Shutdown
1417Power Down Failure
1433Emergency Stop
1434Remote Emergency Stop
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
2335Excitation Fault
2336Memory Error
2341High Control Temperature
2342Too Long in Idle
2967Governor Fault
2968AVR Fault
2969LON Failure
2972Field Overload

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

Parts

40
Part #DescriptionQtySystem
0300-4623-30DFLC (600V)1Current transformer PartsGeek
0300-4623-54DFLC BR (0-480V)1Current transformer PartsGeek
140-2501Cleaner, Air (Disposable)2Air filter PartsGeek FridayParts $152.02
140-2502Band, Mounting – Air Cleaner4Air filter Amazon eBay $59.99 PartsGeek
140-3230Cleaner, Air (Includes Elements - See Ref. No. 25 and 26)2Air filter Amazon eBay $95.60 PartsGeek
502-1162Connector, Hose (3/8")2Hose PartsGeek
503-0685Clamp, Hose2Hose PartsGeek
503-1484Elbow, Hose (45 Deg) (7" ID)2Hose PartsGeek
503-1620Hose – Bulk (3/8" ID) (Order by the Foot)-Hose PartsGeek
503-1870-11Clamp, Hose2Hose PartsGeek
503-1870-12Clamp, Hose2Hose PartsGeek
960-0504PCC Control Service Manual*Service manual PartsGeek
960-0507Detector Control Service Manual**Service manual PartsGeek
140-1260Fitting, Safety Filter2Service part / kit Amazon eBay $35.00 PartsGeek
140-1548Indicator, Service2Service part / kit Amazon eBay $91.60 PartsGeek
140-2395Tube, Air Inlet1Service part / kit PartsGeek
140-2503Bracket, Mounting1Service part / kit PartsGeek
140-2504-01Bracket, Mounting (Right Side)1Service part / kit PartsGeek
140-2504-02Bracket, Mounting (Left Side)1Service part / kit PartsGeek
140-2508Tube, Air Inlet (7" x 9" - 3/4")2Service part / kit Amazon eBay $129.95 PartsGeek
140-2509Tube, Air Inlet2Service part / kit PartsGeek
140-2528Shield – Air In Heat1Service part / kit PartsGeek
309-0635-02Valve, Check2Service part / kit PartsGeek
332-2634Clamp, Retainer 4 Prior To December 1996 Production (Mounted On Top And Side Of Control Box Wrapper)10Service part / kit PartsGeek
503-1717Elbow, Reducer (45 Deg) (7" ID to 6" ID)2Service part / kit PartsGeek
503-1720Insert, Reducer (6" OD to 5-1/2" ID)2Service part / kit PartsGeek
505-0017Bushing, Pipe – Reducer (3/8" to 1/4")2Service part / kit PartsGeek dieselpartscenter $2032.36
505-0376Elbow – 45 Deg (3/8")2Service part / kit PartsGeek
518-0548-24Clamp, Retainer Begin December 1996 Production (Mounted On Top And Side Of Control Box Wrapper On The Side Towards The Control Box Cover)20Service part / kit PartsGeek
518-0548-42Clamp, Retainer 4 Prior To December 1996 Production (Mounted On Top And Side Of Control Box Wrapper)20Service part / kit PartsGeek
526-0030Washer, Flat (3/8")8Service part / kit PartsGeek
800-0055Screw, Cap – Hex Head (3/8–16 x 2-1/4")8Service part / kit PartsGeek
800-0094Screw, Cap – Hex Head (1/2–13 x 2")8Service part / kit PartsGeek
821-0029Screw, Self–Locking – Hex Washer Head (3/8–16 x 3/4")8Service part / kit PartsGeek
821-0033Screw, Self–Locking – Hex Washer Head (7/16–14 x 3/4")8Service part / kit PartsGeek
821-5004-03Screw, Self-Locking – Hex Washer Head (3/8–16 x 1")2Service part / kit PartsGeek
870-0281Nut, Self-Locking – Hex Washer Head (3/8–16)2Service part / kit PartsGeek
960-0606Service part / kit PartsGeek
960-0608Service part / kit PartsGeek
F-2375A single line drawing of the prime power systemService 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
Prime100%289.075.34

Available documents

Spec sheet — 1340 DFLE (Cummins/Onan)Parts manual — Cummins-DFLB-DFLC-DFLE-generator-set-parts-manual (Cummins/Onan)

Other sets with this engine

Cummins/Onan BCC 1400S-50Cummins/Onan C1250 D2RCummins/Onan C1400 D5Cummins/Onan CP1400-6Cummins/Onan CS1600-6Cummins/Onan DFLCCummins/Onan KTA50