Kohler Understanding Fault Shutdowns in the 12RES Generator

Page 17

2.4 Fault Shutdowns

The generator set shuts down automatically under the fault conditions listed in Figure 2-3 and the controller displays a fault code. The generator set cannot be restarted until the fault condition is corrected and the controller is reset. See Section 2.4.1 to reset the controller after a fault shutdown. The controller resets automatically after a battery voltage fault condition is corrected.

The shutdown switches on the generator set automatically reset when the problem is corrected. The high engine temperature switch automatically resets when the generator set cools. However, the fault does not clear until the controller is reset.

The controller displays a fault code but the generator set does not shut down under the conditions shown in Figure 2-4.

Code

Fault

Description

Check

AF

Auxiliary fault

Not used.

 

input shutdown

 

 

 

 

 

 

HE

High engine

Shutdown occurs if the engine coolant temperature exceeds

Check for blocked air inlets and exhaust

 

temperature

the maximum temperature for more than 5 seconds. This

outlets.

 

shutdown

protective becomes active after the engine reaches the crank

 

 

 

disconnect speed.

 

 

 

 

 

LCL

Low coolant level

Not used on air-cooled models.

 

 

 

 

LOC

Loss of coolant

Not used on air-cooled models.

 

 

 

 

LOP

Low oil pressure

Shutdown occurs if a low oil pressure condition exists for more

Check for leaks in the lubrication system.

 

shutdown

than 5 seconds. This protective becomes active 30 seconds

Check the oil level and add oil if the level

 

 

after the engine has reached crank disconnect speed

 

 

is low.

 

 

(30 second inhibit).

 

 

 

 

 

Note: The low oil pressure shutdown does not protect against

 

 

 

low oil level. Check the oil level at the engine.

 

 

 

 

 

OC

Overcrank

Shutdown occurs after 3 unsuccessful starting attempts. The

Check the fuel supply, spark plug, and

 

shutdown

crank cycle is set for three starting attempts of 15 seconds

battery.

 

 

cranking and 15 seconds rest.

Check for loose connections.

 

 

 

 

 

The generator set also shuts down if no engine rotation is

Contact an authorized distributor/dealer for

 

 

sensed during cranking. Shuts down 1 second after the fault is

service if problem continues.

 

 

detected.

 

 

 

 

 

OF

Overfrequency

Shutdown occurs when the governed frequency exceeds 110%

Contact an authorized distributor/dealer for

 

shutdown

of the system’s frequency setpoint for more than 5 seconds.

service if problem continues.

 

 

This protective becomes active 10 seconds after engine start

 

 

 

(10 second inhibit).

 

 

 

 

 

OS

Overspeed

Shutdown occurs if the engine speed exceeds 115% of the

Contact an authorized distributor/dealer for

 

shutdown

normal running speed for more than 0.3 seconds.

service if problem continues.

 

 

 

 

OU

Overvoltage

Shutdown occurs if the voltage exceeds 120% of the system

Contact an authorized distributor/dealer for

 

shutdown

nominal voltage for more than 2 seconds.

service if problem continues.

 

 

 

 

UF

Underfrequency

Shutdown occurs when the governed frequency falls blow 90%

Reduce the load and restart the generator

 

shutdown

of the nominal system frequency for more than 5 seconds.

set.

 

 

This protective becomes active 10 seconds after engine start.

Contact an authorized distributor/dealer for

 

 

(10 second inhibit).

 

 

service if problem continues.

 

 

 

 

 

 

 

UU

Undervoltage

Shutdown occurs if the voltage falls below 80% of the nominal

Reduce the load and restart the generator

 

shutdown

system voltage for more than 10 seconds.

set.

 

 

 

Contact an authorized distributor/dealer for

 

 

 

service if problem continues.

 

 

 

 

Figure 2-3 ADC 2100 Fault Shutdown Codes

TP-6331 5/04

Section 2 Operation

5

Image 17
Contents TP-6331 5/04 ModelsController Advanced Digital Control ADC Controller Identification Product Identification InformationGenerator Set Identification Numbers Engine IdentificationTable of Contents Table of Contents TP-6331 5/04 Accidental Starting Safety Precautions and InstructionsBattery Exhaust System Engine Backfire/Flash FireHazardous Voltage/ Electrical Shock Fuel System Hazardous NoiseMoving Parts Heavy EquipmentHot Parts 246242 VI Safety Precautions and Instructions TPTPS-6331 5/04 EPA and California Emission Certification IntroductionNameplate Service Assistance Specifications Generator FeaturesEngine Advanced Digital ControlGenerator Set Components Generator Set ComponentsOperation Prestart ChecklistExercising Generator Set Generator Set OperationStopping Generator Set Controls and IndicatorsStarting Generator Set Code Fault Description Check Fault ShutdownsResetting Controller after a Fault Shutdown Continuous Power ModeBattery Charger Operation Battery ChargerOperation TP-6331 5/04 Routine Maintenance Scheduled MaintenanceLubrication Service ScheduleLubrication System Oil Change ProcedureLow Oil Pressure Shutdown Oil CheckSpark Plugs Air Cleaner Element and PrecleanerPrecleaner Service Air Cleaner Components Paper Element ServiceCooling Air Intake and Exhaust Cooling SystemEZ-273000-J Circuit Protection Storage ProcedureExterior Preparation BatteryCylinder Lubrication Scheduled Maintenance TP-6331 5/04 Introduction TroubleshootingGenerator Set Troubleshooting Troubleshooting Fault CodesBattery Charger Troubleshooting Ansi Appendix a AbbreviationsISO Page By Kohler Co. All rights reserved

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