Kohler 8/10/12RESVL manual Unloaded Full-Speed Exercise, Loaded Full-Speed Exercise with RXT only

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System Diagnostics

During the unloaded exercise, the controller monitors the following data. The controller display indicates that the generator set is running, unless a fault is detected as described below.

D ATS connection. The controller verifies that the Model RXT ATS interface board is connected.

DBattery voltage. Battery voltage is checked before exercise to verify engine starting capability. Battery voltage provides a measurement of battery health. If the controller detects low battery voltage, the condition is indicated on the display.

D Communication integrity tests. J1939, RBUS, Ethernet, and USB are monitored for messages indicating that the controller and wiring are reliable.

D Engine speed. Engine speed is measured at reduced speed and full speed. An overspeed or underspeed condition will result in a fault condition and shutdown.

D Generator output frequency and voltage. Operating the generator at full speed allows the RDC2/DC2 controller to check the output power for correct voltage, frequency, and stability. When the engine is running at full speed, the controller verifies that the voltage and frequency are within acceptable limits. A fault message is displayed if the voltage or frequency is out of range.

D Oil pressure. Oil pressure is verified to ensure proper lubrication of critical engine components. Pressure is monitored at both reduced and full speeds. If the oil pressure is low, the Low Oil Pressure message is displayed and the generator set shuts down.

2.4.3Unloaded Full-Speed Exercise

The unloaded full-speed exercise runs the generator set at full speed for 20 minutes without transferring the load.

To set an unloaded full-speed exercise, follow the procedure in Figure 3-8 and select Exercise Mode: Unloaded Full.

2.4.4Loaded Full-Speed Exercise (with RXT only)

A loaded exercise starts the generator set, ramps up to full speed, and then transfers the electrical load from the utility source to the generator set. After 20 minutes, the load is transferred back to the utility source. The engine runs without load for 5 minutes or until cool, and then shuts down automatically.

Note: With a loaded exercise, power to the building is lost for up to 10 seconds during load transfer.

For a loaded exercise controlled by the RDC2 or DC2 controller, a Model RXT transfer switch must be connected to the generator set. To set a loaded exercise, follow the procedure in Figure 3-8 and select Exercise Type: Loaded.

For a loaded exercise with a transfer switch other than a Kohlerr Model RXT, program the exercise at the transfer switch controller. Refer to the transfer switch operation manual for instructions.

2.4.5Power Failure During Exercise Cycle

If the utility power is lost during an unloaded exercise, the ATS transfers to the emergency source, the exercise is ended and the control remains in the AUTO mode.

If the utility power is lost during a loaded exercise, the exercise is ended. The ATS remains in the emergency position and the control goes into the AUTO mode.

The generator set continues to run and supply power to the load for the duration of the utility power outage. When Utility power is restored, the ATS will re-transfer to the utility source through normal timing sequences.

TP-6880 10/14

Section 2 Generator Set Operation 23

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Contents TP-6880 10/14a RDC2Controller Identification Accessory Number Accessory DescriptionProduct Identification Information Generator Set Identification NumbersTable of Contents DC2 Controller Operation Scheduled MaintenanceTroubleshooting Accidental starting Can cause severe injury or death Safety Precautions and InstructionsBattery Accidental StartingFire Can cause severe injury or death Engine Backfire/Flash FireExhaust System Carbon monoxide Can CauseHazardous voltage Will cause severe injury or death Fuel System Hazardous NoiseHot Parts Heavy EquipmentList of Related Literature Transfer Switch LiteratureAccessory Literature IntroductionEmission Compliance Period NameplateEmission Information Generator Set ApplicationService Assistance Service Assistance TP-6880 10/14 Descriptions and Service Views RDC2 Controller Features DC2 Controller Features Load Control Module LCM AccessoriesCarburetor Heater Programmable Interface Module PIM1214 Service Views3Service View Generator Set Operation Prestart ChecklistGenerator Set Operation TP-6880 10/14 Generator Set Operation Exercising the Generator SetExercise Automatic Operation with Other Transfer SwitchesSetting the Exerciser Unloaded Cycle Exercise with Complete System DiagnosticsLoaded Full-Speed Exercise with RXT only Power Failure During Exercise CycleSystem Diagnostics Unloaded Full-Speed ExerciseShutdowns FaultsATS Communication Errors Resetting the Controller after a Fault ShutdownFault Message Shutdown SD Condition Check Fault Shutdown SD Condition Check 3Controller Fault MessagesGenerator Enclosure Thermostat Generator Set Operation TP-6880 10/14 RDC2 Controller Operation RDC2 Generator Set/ Transfer Switch ControllerControls and Indicators LED Operation Controller Keypad LED IndicatorsButton Button FunctionActive Alert LCD DisplayProcedure to Change Settings Controller PowerBattery Charging Changing Settings7Changing Settings Changing Settings on the RDC2 ControllerProcedure to Set the Exerciser Setting the ExerciserSetting the Exerciser at Controller Power-up Changing the Exercise Settings8Procedure to Set the Exerciser on the RDC2 Controller Main Menu RDC2 Controller MenusEngine Metering Menu Overview MenuVoltage Calibration Generator Metering MenuGenset Run Time Menu Generator Set Information MenuVoltage Regulator VR Voltage Adj Setting the ExerciserAdjusting the Display Contrast Genset System MenuScreens on this page do not appear ATS Status MenuChanging ATS Configuration Settings ATS Configuration MenuNetworking Information Menus Date and Time MenuDhcp Networking Status SubmenuDhcp Submenu Networking Configuration Submenu OnCue Plus PasswordPassword 21Network Configuration Submenu 22RBUS Information Submenu Rbus InformationFrom Figure Remote Devices SubmenuProgrammable Interface Module PIM Status Menu 25Load Control Module LCM or Load Shed Kit Status Menu Load Control Module LCM or Load Shed Kit MenusEvent Log Procedure to View Event HistoryRDC2 Controller Operation TP-6880 10/14 DC2 Controller Operation DC2 Generator Set/ Transfer Switch ControllerDescription Controller KeypadButton Button Function LED Indication5Status Displays, Generator Running Exercise Modes Exerciser ResetOnCue Plus Password Maintenance TimerDC2 Controller Operation TP-6880 10/14 Scheduled Maintenance Scheduled Maintenance Service Schedule Low Oil Pressure Shutdown Oil Change ProcedureLubrication System Engine Oil RecommendationFill with oil Reset the maintenance timer on the controllerDrain the oil Replace the oil filterModel Resvl DC2 Resetting the Maintenance TimerSpark Plugs Model Resv RDC2Paper Element Service Air Cleaner ServiceAir Cleaner, 8RESV/RESVL Models Cooling System Air Cleaner, 10/12RESV/RESVL ModelsHazardous noise Can cause hearing loss EZ-273000-J Storage Procedure Scheduled Maintenance TP-6880 10/14 USB Port TroubleshootingFault Messages IntroductionProblem Possible Cause Corrective Action TroubleshootingAnsi Appendix a AbbreviationsLCB Page TP-6880 10/14
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