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My 1000kva cummins generator shuts down during operation indicating low voltage. what is the cause

I have bought a 1000KVA cummins generator ; Model; KTA38-G2A Engine number; 41111876 Maker; CHONGQING CUMMINS COMPANY LTD, CHINA PROBLEM; The generator starts normal but after two hours, it will indicate low ac voltage and automatically shut down itself. The RPM and FREQUENCY remains NORMAL.. I changed the fuel filters but the problem persisted. What is the cause?

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Starlight Power

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Hello dear, try to get help from this article Why Diesel Generator Fail to Start
The causes may be various:
1. Battery failure
2. Low coolant level
3. Low coolant temp alarm
4. Oil, fuel or coolant leaks
5. Control not in auto
6. Air in the fuel system
7. Ran out of fuel
8. High fuel level alarm
9. Breaker trip
Hope it works for you.

Posted on Mar 07, 2018

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Check for floating debris in fuel tank possibly restricting fuel flow thru screen on bottom of fuel pickup;

Posted on Oct 17, 2017

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Ifesi

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SOURCE: its 230kvaperkins generator it starts normally,but

You should check the heat sensor and oil sensor.by ifesi

Posted on Jun 02, 2011

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2006 ford 3.9L has code P0625, but my alternator is charging just fine.


P0625 - Generator Field Terminal Circuit Low Description: The powertrain control module (PCM) monitors generator load from the generator/regulator in the form of frequency. The concern indicates the input is lower than the load should be in normal operation. The load input could be low when no generator output exists. Possible Causes:
  • GENRC circuit short to ground
  • GENLI circuit short to ground
  • Open B+ wire during operation
  • Low system voltage
  • Broken generator belt
  • Damaged generator/regulator assembly
Diagnostic Aids: Verify the battery voltage is 14.5 volts. Verify the generator/regulator has the correct part number. Application Key On Engine Off Key On Engine Running Continuous Memory All GO to Pinpoint Test HY .

Dec 21, 2016 | Ford Cars & Trucks

1 Answer

My battery light came on while i was driving than a few minutes later everything shut off. The battery was replaced in january and alternator was replaced in october.. what could be the problem?


For the alternator to work B+ voltage must be applied to the heavier gage wire on the back of the alternator ,plus the alternator is computer controlled , by the PCM !
Charging System Indicators
BATTERY The IPC illuminates the battery indicator when the following occurs:
?€¢
The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the PCM requesting illumination.


?€¢
The IPC determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the body control module (BCM) indicating the system voltage.


?€¢
The IPC performs the displays test at the start of each ignition cycle. The indicator illuminates for approximately 3 seconds.


?€¢
The ignition is on, with the engine off.
BATTERY NOT CHARGING The IPC illuminates the battery not charging indicator in the driver information center when the following occurs:
?€¢
The PCM detects that the generator output is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the PCM requesting illumination.


?€¢
The IPC determines that the system voltage is less than 11 volts or greater than 16 volts. The IPC receives a class 2 message from the body control module (BCM) indicating the system voltage.


Your best is to have a qualified repair shop check it out ! Could have DTC'S - diagnostic trouble codes stored !
DTC P0562
The powertrain control module (PCM) continuously monitors that the system voltage stays within the proper range. If the PCM detects an excessively high system voltage, DTC P0563 will set. A high voltage condition may cause a stalling condition or other drive ability concerns.
DTC P0621
The powertrain control module (PCM) uses the generator turn on signal circuit to control the generator. A high side driver within the PCM allows the PCM to turn the generator ON and OFF. When Generator operation is desired, the PCM sends a 5 volt signal to the voltage regulator via the generator turn on signal circuit. This causes the voltage regulator to begin controlling the generator field circuit. Once the Generator is enabled by the PCM, the voltage regulator controls generator output independently of the PCM. Under certain operating conditions, the PCM can turn Off the generator by turning Off the 5 volt signal on the generator turn on signal circuit. The PCM has fault detection circuitry which monitors the state of the generator turn on signal circuit. If the fault detection circuit senses a voltage other than what is expected, this DTC will set. The voltage regulator also contains fault detection circuitry. If the regulator detects a problem, the regulator will ground the generator turn on signal circuit, pulling the voltage low. This also causes the PCM to set the DTC.
DTC P0622
Checking for codes an voltage drop testing the connections an using a scan tool to check data parameters is the only way to solve your problem . Which means taking to a qualified repair shop !

Jul 26, 2016 | 2002 GMC Envoy

1 Answer

Charging light flashes quickly between green and yellow. Normal?


No. Most UPS's should have a Solid Green Led on if the unit is running good. This might be indication that UPS has batteries that are not charging completely which mean they are depleting. How old is this UPS and the batteries? Have you changed the batteries yet? Need more info. Do you still have the manual. Always keep UPS manual handy. I have a ton of manuals but not for these little UPS. Mine are for 10kVA to 1000kVA 480v to 208v. Anyways hope I helped.

Dec 21, 2013 | Hi-Capacity Zoeller 510-0005 Basement...

2 Answers

Sir, I had a problem with my 1000kVa diesel engine generator whereby it had tripped on overspeed alarm. After 10 days , fuel injectors got damaged in diesel generator. What is problem & Why fuel injector...


The injectors probably were damaged because the unti ran away, it should have shut down on over speed. If it did not then the sensor and control need checking. I would also check the engine oil to see if diesel has found its way into the sump. If it has then the rings are shot and the unit is "self feeding" off it's own engine oil, and no control signal will shut it down, it needs checking out by a pro, as a runanway diesel is extrememly dangerous in the size you are speaking !

Sep 19, 2013 | Electrical Supplies

1 Answer

Fuel shutoff solenoid


You have an A1 control board issue, but you never indicated what generator model, power is momentary to the solenoid during cranking, and then picked up by the control board in the run circuit

May 19, 2013 | Onan Cummins 146-0646 Solenoid Repair Kit...

1 Answer

UNIT SHUTS DOWN FREQUENTLY


How soon after starting does it shut down?
The hour meter is fed directly from the AC output off the generator stator, if there is no AC output the meter will not run. Assuming it shutdowns quickly, check 1st the oil level and make sure the low oil sender unit is ok, wire #24 to ground. If that is bad it will shut down. Check to see if you have 240V on L1 and L2 on the breaker for the brief time it does start, that will confirm stator/rotor has an output, then your problem moves from the generator portion to either the oil sender, or control board.

Feb 24, 2013 | Powermate Coleman Standby Generator...

1 Answer

1995 dodge ram 1500 318 motor it wont get fire where is the logic module located


Under hood,passenger side mounted on the firewall,but ...
Could be something else ,crank sensor or cam,or ign.rotor ect.
The module like 3 hundred bucks.Try this ,turn the key
on-off-on-off-on( without out hitting the starter) the check
engine light should begin to flash.
Here is a code list,may narrow down the problem.
Diagnostic Trouble Code Descriptions and service hints. Fault Code DRB Display Code Description. Service hints. 11 No Crank reference signal at PCM No Distributor reference signal detected during engine cranking. Check the circuit between the distributor and PCM. 12 Battery Disconnect Direct Battery input to PCM disconnected within last 50 ignition key-on cycles. Normal if battery has been disconnected, otherwise check battery power and ground connections. 13** No change in MAP from start to run No difference seen between the engine MAP reading and the barometric (atmospheric) pressure reading at startup. Indicates a problem with the MAP sensor vacuum system. 14** MAP sensor voltage too low or too high MAP sensor voltage output is outside the acceptable range. 15** No Vehicle speed sensor signal No signal received from the vehicle speed sensor during road load operation. 17* Engine is cold too long Engine temperature too high or too low while traveling. Check coolant level, radiator cap, temperature sensor, and thermostat. 21** O2S Stays at center O2S shorted to voltage O2 sensor does not detect rich or lean condition, or O2 sensor input voltage too high. DRB will indicate which side with dual sensors. The O2 sensor signal should fluctuate under normal conditions. 22** ECT sensor voltage too high or too low Engine Coolant temperature sensor input out of normal range. Check engine temperature sensor. 23** Intake air temp sensor voltage too high or low Intake air manifold temperature sensor is out of range. Check sensor. 24** Throttle position sensor voltage too high or low TPS sensor is out of normal range. 25** Idle air control motor circuits A short is detected in one or more of the idle air motor circuits. 27* Injector # control circuit Injector number # output driver circuit does not respond to the control signal. Check the affected circuit. 31** EVAP Solenoid Circuit Short or open in the EVAP solenoid circuit. Check for loose, broken, or shorted wire in the charcoal canister purge solenoid wiring and connectors. 32** EGR Solenoid circuit Short or open in the EGR solenoid circuit. Check for loose, broken, or shorted wire in the EGR valve wiring and connectors. Possible air fuel ratio imbalance not detected during diagnosis. 33* AC clutch relay circuit Short or open in the AC clutch circuit. 34* Speed control circuit or speed control switch always low or high An open or short in the speed control vacuum or vent circuits. Speed control switch input above or below normal range. 35 Radiator Fan low speed relay circuit Open or short in the radiator fan relay wiring. 37** Torque converter clutch solenoid CKT or Trans temp sensor too high or low Open or short in CKT wiring or connectors. Voltage out of range at transmission temperature sensor input. See NOTE #1 below 41** Generator field not switching properly Open or short in the generator (alternator) field control (regulator) circuit. This indicates a problem with the charging circuit and the fault is set when the battery voltage from the ASD relay falls below 11.75 volts. Wiring, connectors, fuses, and the ASD relay should be checked. A shorted battery cell can also trigger this fault. 42* Auto shutdown relay circuit Open or short in the ASD relay wiring or connectors. 43** Ignition coil circuit # Open or short in number # coil circuit. Indicates that the ignition coil's peak primary circuit current is not achieved with the maximum dwell time. 44* Battery temp sensor volts out of range An open or short in the engine coolant temperature sensor circuit or a problem in the PCM's battery temperature circuit. 45* Trans OD solenoid circuit Transmission OD solenoid circuit failure. Open or short in the transmission overdrive solenoid circuit. 46** Charging system voltage too high Battery voltage sense input above target charging voltage during engine operation. Computer is indicating that the battery voltage is not being regulated. 47** Charging system voltage too low Battery voltage sense input above target charging voltage during engine operation. Also, no significant change in battery voltage was detected during a test of the generator output. 51** System lean L-Idle Adap at rich limit or lean R-Idle Adap at rich limit O2 sensor signal indicates lean air/fuel ratio during engine operation. The computer ran the mixture to the rich limit of programming, but the O2 sensor still indicated a lean condition. L or R indicate left or right side O2 sensor. Fuel pressure problems can lean the mixture and set this fault. 52** System rich L-Idle Adap at lean limit or rich R-Idle Adap at lean limit O2 sensor signal indicates rich air/fuel ratio during engine operation. The computer ran the mixture to the lean limit of programming, but the O2 sensor still indicated a rich condition. L or R indicate left or right side O2 sensor. Faulty ignition components, high or low fuel pressure, or leaking injectors can set this fault. 53* Internal PCM failure or PCM SPI comm failure An internal PCM failure or PCM communications failure has been detected. 54* No cam sync signal at PCM No fuel sync (camshaft signal) detected during engine crank. No camshaft position sensor signal was received from the distributor. Problem with the distributor synchronization circuit. 55 N/A End of message code. A DTC 55 is used to end all DTC messages. This code does not show on the DRB tool and indicates a completion of the stored codes on the Malfunction Indicator Lamp (check engine lamp). 62* PCM failure SRI miles not stored Unsuccessful attempt to update Service Reminder Indicator miles in the PCM EEPROM (memory). 63* PCM Failure EEPROM write denied Unsuccessful attempt to write and EEPROM location by the PCM. Controller failure, check the PCM. This code can be set when attempting an unauthorized reprogram of the PCM. 71** Aux 5V signal voltage low The auxiliary 5 volt supply output voltage is low. The 5 volt output signal is not reaching the required voltage level. 72** Catalytic Converter efficiency failure The catalytic converter is not converting emissions in the proper ratio.

Feb 22, 2013 | Cars & Trucks

1 Answer

I have 3 transformers 240\480 wired for 480 delta, 1000kva total, step down, 13kv\480 delta, im getting high voltage on across 2 legs, at 505 volts. is one transformer going bad?


It's possible the transformer is bad, but maybe a primary fuse or switch is out on the 13kV side. Check the secondary connections into the delta at the transformer. Good luck!

Jan 16, 2011 | Garden

1 Answer

I have cummins generator the voltage display on output 67.how can i soved the problem


Somehow your post ended up in the wrong category. On some models, 67 indicates a failed inverter. To be more accurate, would need to ask again with correct model and spec numbers.

Dec 13, 2008 | Coleman Powermate Powermate 5000W...

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