Kohler 48VDC, 6VSG, 24VDC, 36VDC manual Exercise, Faults, Shutdowns

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KPS_043B

1.Positive (+)

2.Negative (–)

Figure 2-3Output Block

2.5 Exercise

The VSC controllers can be set to automatically run the generator set at the same time and day each week. Exercising the generator set weekly or every two weeks is required to keep the engine and alternator in good operating condition.

When power is applied to the VSC controller (that is, when the battery is connected), you will be prompted to set the date and time, and then to set the exerciser.

See Section 3.1, VSC Generator Set Controller, for more information

An exercise can be started at any time using Kohler® OnCue®, or can start automatically according to the exercise schedule programmed on the VSC controller.

Three exercise modes are available. During some exercise modes the engine speed increases and decreases. This is normal.

1.Unloaded Full Speed Exercise. The generator regulates the output load below 5% of capacity. The generator will stop after 20 minutes.

2.Unloaded Cycle Exercise. The generator set engine speed varies during the 20-minute exercise according to the following cycle:

a.The generator set regulates the output load below 5% of capacity for 11 minutes to warm up.

b.The output regulation is moved to the Genset Maximum Percent Capacity for 3 minutes to test ability to output power.

c.The load limit is returned to 5% for 6 minutes to allow the generator to cool down before stopping.

3.Loaded Full Speed Exercise. The generator operates normally. Voltage is regulated to Voltage Regulator Average Voltage Adjustment, and load is regulated to Genset Maximum Percent Capacity. The generator stops after 20 minutes, regardless of the load on the generator.

2.6 Faults

The VSC controller displays fault messages for generator set warnings and shutdowns. Selected fault messages are shown in Figure 2-5.

2.6.1Warnings

The controller displays a fault message but the generator set does not shut down on a warning. The controller resets automatically after a warning condition is corrected.

2.6.2Shutdowns

Under a fault shutdown condition, the generator set shuts down automatically and the controller displays a fault message. The OFF LED flashes. In some cases, the engine cooldown cycle runs before the engine shuts down. See Figure 2-5.

Shutdown switches (such as the low oil pressure switch or high engine temperature switch) on the generator set will automatically reset when the problem is corrected. However, the fault condition at the controller does not clear until the controller is reset.

The generator set cannot be restarted until the fault condition is corrected and the controller is reset. See Section 2.6.3 for instructions to reset the controller after a fault shutdown.

TP-6843 1/13

Section 2 Generator Set Operation 19

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Contents TP-6843 1/13a VSCEngine Identification Product Identification InformationController Identification Generator Set Identification NumbersTable of Contents Scheduled Maintenance Table of ContentsAppendix a Abbreviations Battery Safety Precautions and InstructionsAccidental Starting Exhaust System Engine Backfire/Flash FireFuel System Hazardous Noise Use extreme care when handling, storing, and using fuelsHot Parts Heavy EquipmentList of Related Literature IntroductionEmission Information NameplateService Assistance Service Assistance TP-6843 1/13 Alternator Descriptions and Service ViewsIntroduction Engine Generator Set EnclosureProgrammable Interface Module PIM AccessoriesCarburetor Heater OnCue Generator Management SystemService Views 3Optional Communications Kit Components Generator Set Operation Prestart ChecklistTheory of Operation Generator Set Operation Exercising the Generator SetExercise FaultsShutdowns Fault Message ShutdownSD Condition Check Resetting the Controller After a Fault Shutdown5Controller Fault Messages Generator Set Operation TP-6843 1/13 VSC Controller Operation Control and IndicatorsVSC Generator Set Controller Controller Keypad LED IndicatorsLCD Display 6Autopaging Displays, Automatic ModeProcedure to Change Settings Controller PowerBattery Charging Changing Settings7Changing Settings Procedure to Set the Exerciser Setting the ExerciserSetting the Exerciser at Controller Power-up Changing the Exercise Settings8Procedure to Set the Exerciser on the VSC Controller Main Menu VSC Controller MenusEngine Metering Menu Overview MenuCalibration Generator Metering MenuGenset Run Time Menu Generator Set Information MenuGenset System Menu System Parameters for Battery Bank ChargingNominal Voltage 24V 36V 48V System Voltage, VDC Adjusting the Display Contrast Setting the ExerciserNetworking Information Menus Date and Time MenuDhcp Networking Status SubmenuPassword Networking Configuration Submenu OnCue PasswordRbus Rbus Information25Remote Devices Submenu Remote Devices SubmenuProgrammable Interface Module PIM Status Menu Event Log Procedure to View Event HistoryVSC Controller Operation TP-6843 1/13 Scheduled Maintenance Scheduled MaintenanceFuel Service Schedule, 6VSG ModelsOil Check Oil Change ProcedureLubrication System Low Oil Pressure ShutdownSpark Plugs Resetting the Maintenance TimerPrecleaner Service Air Cleaner ServicePaper Element Service Cooling System Engine Starting BatteryCylinder Lubrication Storage ProcedureLubricating System Fuel SystemBattery Introduction TroubleshootingFault Messages Controller Service AccessProblem Possible Cause Recommended Action TroubleshootingAbdc Appendix a AbbreviationsSysteme international d’unites TP-6843 1/13 Appendix Appendix TP-6843 1/13 Page 2012, 2013 by Kohler Co. All rights reserved
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