Kohler 48VDC, 36VDC, 24VDC, 6VSG User Manual

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Operation

DC Generator Sets

Models:

6VSG

24VDC 36VDC 48VDC

Controller:

VSC

TP-6843 1/13a

Engine exhaust from this product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

California Proposition 65

WARNING

Product Identification Information

Product identification numbers determine service parts. Record the product identification numbers in the spaces below immediately after unpacking the products so that the numbers are readily available for future reference. Record field-installed kit numbers after installing the kits.

Generator Set Identification Numbers

Record the product identification numbers from the generator set nameplate(s).

Model Designation ___________________________

Specification Number _________________________

Serial Number ______________________________

Accessory Number Accessory Description

Controller Identification

Record the controller description from the generator set operation manual, spec sheet, or sales invoice.

Controller Description _________________________

Engine Identification

Record the product identification information from the engine nameplate.

Manufacturer ________________________________

Model Designation ___________________________

Serial Number _______________________________

Figure 1-1

Product Identification Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Safety Precautions and Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Service Assistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Section 1 Descriptions and Service Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.2 Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.3 Generator Set Enclosure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.4 Alternator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.5 Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.5.1 VSC Controller Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

1.6 Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.6.1 Carburetor Heater. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.6.2 OnCue® Generator Management System . . . . . . . . . . . . . . . . . 14

1.6.3 Programmable Interface Module (PIM) . . . . . . . . . . . . . . . . . . . 14

1.6.4 Communications Kit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

1.7 Service Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Section 2 Generator Set Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.1 Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.2 Prestart Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

2.3 Exercising the Generator Set . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.4 Generator Set Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.4.1 Local Starting and Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.4.2 Remote Starting and Stopping . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.4.3 Engine Start Crank Cycle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.4.4 Engine Cooldown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.4.5 Automatic Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.5 Exercise. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.6 Faults. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.6.1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.6.2 Shutdowns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.6.3 Resetting the Controller After a Fault Shutdown . . . . . . . . . . . . 20

Section 3 VSC Controller Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.1 VSC Generator Set Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.2 Control and Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23

3.2.1 Controller Keypad. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.2.2 LED Indicators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

3.2.3 LCD Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3.3 Controller Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.4 Battery Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.5 Changing Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.5.1 Procedure to Change Settings . . . . . . . . . . . . . . . . . . . . . . . . . . 26

3.6 Setting the Exerciser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.6.1 Setting the Exerciser at Controller Power-up . . . . . . . . . . . . . . . 28

3.6.2 Changing the Exercise Settings . . . . . . . . . . . . . . . . . . . . . . . . . 28

3.7 VSC Controller Menus. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.8 Main Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

3.9 Overview Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.10 Engine Metering Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

3.11 Generator Metering Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.11.1 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

3.12 Generator Set Information Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.13 Genset Run Time Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

3.14 Genset System Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

TP-6843 1/13 Table of Contents 3

Table of Contents

Section 4 Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

3.14.1 System Parameters for Battery Bank Charging . . . . . . . . . . . . . 34

3.14.2 Setting the Exerciser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.14.3 Adjusting the Display Contrast . . . . . . . . . . . . . . . . . . . . . . . . . . 36

3.15 Date and Time Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.16 Networking Information Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

3.16.1 Networking Status Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

3.16.2 Networking Configuration Submenu (OnCue® Password) . . . . 39

3.16.3 RBUS Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

3.16.4 Remote Devices Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

3.17 Programmable Interface Module (PIM) Status Menu . . . . . . . . . . . . . . . 42

3.18 Event Log . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

3.18.1 Procedure to View Event History . . . . . . . . . . . . . . . . . . . . . . . . 43

4.1 Scheduled Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

4.1.1 Service Schedule, 6VSG Models . . . . . . . . . . . . . . . . . . . . . . . 46

4.2 Lubrication System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.2.1 Low Oil Pressure Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.2.2 Oil Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.2.3 Engine Oil Recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.2.4 Oil Change Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47

4.2.5 Resetting the Maintenance Timer. . . . . . . . . . . . . . . . . . . . . . . . 48

4.3 Spark Plugs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48

4.4 Air Cleaner Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

4.5 Cooling System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

4.6 Exhaust System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

4.7 Engine Starting Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

4.8 Storage Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4.8.1 Lubricating System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4.8.2 Fuel System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4.8.3 Cylinder Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4.8.4 Exterior Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51

4.8.5 Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Section 5 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.2 Fault Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.3 Circuit Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.3.1 Controller Internal Circuit Protection. . . . . . . . . . . . . . . . . . . . . . 53

5.3.2 Line Circuit Breaker . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.4 Controller Service Access . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

5.5 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

Appendix A Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

4 Table of Contents TP-6843 1/13

Safety Precautions and Instructions

DANGER

WARNING

CAUTION

NOTICE

WARNING

IMPORTANT SAFETY INSTRUCTIONS Electro-mechanical equipment, including generator sets, transfer switches, switchgear, and accessories, can cause bodily harm and pose life-threatening danger when improperly installed, operated, or maintained. To prevent accidents be aware of potential dangers and act safely. Read and follow all safety precautions and instructions. SAVE THESE INSTRUCTIONS.

This manual has several types of safety precautions and instructions: Danger, Warning, Caution, and Notice.

Danger indicates the presence of a hazard that will cause severe

personal injury, death, or substantial property damage.

Warning indicates the presence of a hazard that can cause severe personal

injury, death, or substantial property damage.

Caution indicates the presence of a hazard that will or can cause minor personaI injury or property damage.

Notice communicates installation, operation, or maintenance information that is safety related but not hazard related.

Safety decals affixed to the equipment in prominent places alert the operator or service technician to potential hazards and explain how to act safely. The decals are shown throughout this publication to improve operator recognition. Replace missing or damaged decals.

Accidental Starting

Accidental starting. Can cause severe injury or death.

Disconnect the battery cables before working on the generator set. Remove the negative (–) lead first when disconnecting the battery. Reconnect the negative (–) lead last when reconnecting the battery.

Disabling the generator set. Accidental starting can cause severe injury or death. Before

working on the generator set or equipment connected to the set, disable the generator set as follows: (1) Press the generator set OFF/RESET button to shut down the generator set. (2) Disconnect the power to the battery charger, if equipped. (3) Remove the battery cables, negative (–) lead first. Reconnect the negative (–) lead last when reconnecting the battery. Follow these precautions to prevent the starting of the generator set by the remote start/stop switch.

Battery

WARNING

Sulfuric acid in batteries. Can cause severe injury or death.

Wear protective goggles and clothing. Battery acid may cause blindness and burn skin.

Explosion. Can cause severe injury or death.

Relays in the battery charger cause arcs or sparks.

Locate the battery in a well-ventilated area. Isolate the battery charger from explosive fumes.

Battery electrolyte is a diluted sulfuric acid. Battery acid can cause severe injury or death.

Battery acid can cause blindness and burn skin. Always wear splashproof safety goggles, rubber gloves, and boots when servicing the battery. Do not open a sealed battery or mutilate the battery case. If battery acid splashes in the eyes or on the skin, immediately flush the affected area for 15 minutes with large quantities of clean water. Seek immediate medical aid in the case of eye contact. Never add acid to a battery after placing the battery in service, as this may result in hazardous spattering of battery acid.

Battery acid cleanup. Battery acid can cause severe injury or death.

Battery acid is electrically conductive and corrosive. Add 500 g (1 lb.) of bicarbonate of soda (baking soda) to a container with 4 L (1 gal.) of water and mix the neutralizing solution. Pour the neutralizing solution on the spilled battery acid and continue to add the neutralizing solution to the spilled battery acid until all evidence of a chemical reaction (foaming) has ceased. Flush the resulting liquid with water and dry the area.

TP-6843 1/13 Safety Precautions and Instructions 5

Battery gases. Explosion can

WARNING

cause severe injury or death.

Battery gases can cause an explosion. Do not smoke or permit flames or sparks to occur near a battery at any time, particularly when it is charging. Do not dispose of a battery in a fire. To prevent burns and sparks that could cause an explosion, avoid touching the battery terminals with tools or other metal objects. Remove all jewelry before servicing the equipment. Discharge static electricity from your body before touching batteries by first touching a grounded metal surface away from the battery. To avoid sparks, do not disturb the battery charger connections while the battery is charging. Always turn the battery charger off before disconnecting the battery connections. Ventilate the compartments containing batteries to prevent accumulation of explosive gases.

Battery short circuits. Explosion can cause severe injury or death.

Short circuits can cause bodily injury and/or equipment damage. Disconnect the battery before generator set installation or maintenance. Remove all jewelry before servicing the equipment. Use tools with insulated handles. Remove the negative (–) lead first when disconnecting the battery. Reconnect the negative (–) lead last when reconnecting the battery. Never connect the negative (–) battery cable to the positive (+) connection terminal of the starter solenoid. Do not test the battery condition by shorting the terminals together.

Engine Backfire/Flash Fire

Servicing the air cleaner. A sudden backfire can cause severe injury or death. Do not operate the generator

set with the air cleaner removed.

Servicing the fuel system. A flash fire can cause severe injury or death. Do not smoke or permit flames

or sparks near the carburetor, fuel line, fuel filter, fuel pump, or other potential sources of spilled fuels or fuel vapors. Catch fuels in an approved container when removing the fuel line or carburetor.

Combustible materials. A fire can cause severe injury or death.

Generator set engine fuels and fuel vapors are flammable and explosive. Handle these materials carefully to minimize the risk of fire or explosion. Equip the compartment or nearby area with a fully charged fire extinguisher. Select a fire extinguisher rated ABC or BC for electrical fires or as recommended by the local fire code or an authorized agency. Train all personnel on fire extinguisher operation and fire prevention procedures.

Exhaust System

Carbon monoxide. Can cause severe nausea,

fainting, or death.

The exhaust system must be leakproof and routinely inspected.

Carbon monoxide detectors. Carbon monoxide can cause severe nausea, fainting, or death. Install

carbon monoxide detectors on each level of any building adjacent to the generator set. Locate the detectors to adequately warn the building’s occupants of the presence of carbon monoxide. Keep the detectors operational at all times. Periodically test and replace the carbon monoxide detectors according to the manufacturer’s instructions.

Carbon monoxide symptoms. Carbon monoxide can cause severe nausea, fainting, or death. Carbon

monoxide is a poisonous gas present in exhaust gases. Carbon monoxide is an odorless, colorless, tasteless, nonirritating gas that can cause death if inhaled for even a short time. Carbon monoxide poisoning symptoms include but are not limited to the following:

• Light-headedness, dizziness

• Physical fatigue, weakness in joints and muscles

• Sleepiness, mental fatigue, inability to concentrate or speak clearly, blurred vision

• Stomachache, vomiting, nausea

If experiencing any of these symptoms and carbon monoxide poisoning is possible, seek fresh air immediately and remain active. Do not sit, lie down, or fall asleep. Alert others to the possibility of carbon monoxide poisoning. Seek medical attention if the condition of affected persons does not improve within minutes of breathing fresh air.

Generator set operation. Carbon monoxide can cause severe nausea, fainting, or death. Carbon

monoxide is an odorless, colorless, tasteless, nonirritating gas that can cause death if inhaled for even a short time. Avoid breathing exhaust fumes

Fire. Can cause severe injury or death.

Do not smoke or permit flames or sparks near fuels or the fuel system.

6 Safety Precautions and Instructions TP-6843 1/13

when working on or near the generator set. Never operate the generator set inside a building. Never operate the generator set where exhaust gas could seep inside or be drawn into a potentially occupied building through windows, air intake vents, or other openings.

Fuel System

WARNING

CAUTION

DANGER

WARNING

CAUTION

Explosive fuel vapors. Can cause severe injury or death.

Use extreme care when handling, storing, and using fuels.

The fuel system. Explosive fuel vapors can cause severe injury or death. Vaporized fuels are highly

explosive. Use extreme care when handling and storing fuels. Store fuels in a well-ventilated area away from spark-producing equipment and out of the reach of children. Never add fuel to the tank while the engine is running because spilled fuel may ignite on contact with hot parts or from sparks. Do not smoke or permit flames or sparks to occur near sources of spilled fuel or fuel vapors. Keep the fuel lines and connections tight and in good condition. Do not replace flexible fuel lines with rigid lines. Use flexible sections to avoid fuel line breakage caused by vibration. Do not operate the generator set in the presence of fuel leaks, fuel accumulation, or sparks. Repair fuel systems before resuming generator set operation.

Gas fuel leaks. Explosive fuel vapors can cause severe injury or death. Fuel leakage can cause an

explosion. Check the LP vapor gas or natural gas fuel system for leakage by using a soap and water solution with the fuel system test pressurized to 6-8 ounces per square inch (10-14 inches water column). Do not use a soap solution containing either ammonia or chlorine because both prevent bubble formation. A successful test depends on the ability of the solution to bubble.

Hazardous Noise

Hazardous noise. Can cause hearing loss.

Never operate the generator set without a muffler or with a faulty exhaust system.

Engine noise. Hazardous noise can cause hearing loss. Generator sets

not equipped with sound enclosures can produce noise levels greater than 105 dBA. Prolonged exposure to noise levels greater than 85 dBA can cause permanent hearing loss. Wear hearing protection when near an operating generator set.

Hazardous Voltage/Moving Parts

Hazardous voltage. Will cause severe injury or death.

This equipment must be installed and serviced by qualified electrical personnel.

WARNING

Hazardous voltage. Moving parts. Can cause severe injury or death.

Hazardous voltage. Backfeed to the utility system can cause property damage, severe injury, or death.

If the generator set is used for standby power, install an automatic transfer switch to prevent inadvertent interconnection of standby and normal sources of supply.

Welding the generator set. Can cause severe electrical equipment damage.

Never weld components of the generator set without first disconnecting the battery, controller wiring harness, and engine electronic control module (ECM).

Grounding electrical equipment. Hazardous voltage can cause severe injury or death. Electrocution

is possible whenever electricity is present. Ensure you comply with all applicable codes and standards. Electrically ground the generator set, transfer switch, and related equipment and electrical circuits. Turn off the main circuit breakers of all power sources before servicing the equipment. Never contact electrical leads or appliances when standing in water or on wet ground because these conditions increase the risk of electrocution.

Operate the generator set only when all guards and electrical enclosures are in place.

TP-6843 1/13 Safety Precautions and Instructions 7

Welding on the generator set. Can

WARNING

cause severe electrical equipment damage. Before welding on the

generator set perform the following steps: (1) Remove the battery cables, negative (–) lead first. (2) Disconnect all engine electronic control module (ECM) connectors. (3) Disconnect all generator set controller and voltage regulator circuit board connectors. (4) Disconnect the engine batterycharging alternator connections. (5) Attach the weld ground connection close to the weld location.

Connecting the battery and the battery charger. Hazardous voltage can cause severe injury or death.

Reconnect the battery correctly, positive to positive and negative to negative, to avoid electrical shock and damage to the battery charger and battery(ies). Have a qualified electrician install the battery(ies).

Short circuits. Hazardous voltage/current can cause severe injury or death. Short circuits can

cause bodily injury and/or equipment damage. Do not contact electrical connections with tools or jewelry while making adjustments or repairs. Remove all jewelry before servicing the equipment.

Hot Parts

Hot engine and exhaust system. Can cause severe injury or death.

Do not work on the generator set until it cools.

Servicing the exhaust system. Hot parts can cause severe injury or death. Do not touch hot engine parts.

The engine and exhaust system components become extremely hot during operation.

Servicing the engine heater. Hot parts can cause minor personal injury or property damage. Install

the heater before connecting it to power. Operating the heater before installation can cause burns and component damage. Disconnect power to the heater and allow it to cool before servicing the heater or nearby parts.

Heavy Equipment

Unbalanced weight. Improper lifting can cause severe

injury or death and equipment damage.

Do not use lifting eyes. Lift the generator set using lifting bars inserted through the lifting holes on the skid.

8 Safety Precautions and Instructions TP-6843 1/13

Introduction

This manual provides operation and maintenance instructions for the DC (direct current) variable speed model 6VSG generator sets equipped with Kohler VSC generator set controllers.

This generator set is approved for use in stationary applications in locations served by a public utility, photovoltaic cells, wind turbines or any combination of power sources tied to a battery bank. Have the generator set installed by an authorized distributor/dealer or service technician. Refer to Installation Manual, for installation instructions.

Information in this publication represents data available at the time of print. Kohler Co. reserves the right to change this publication and the products represented without notice and without any obligation or liability whatsoever.

Read this manual and carefully follow all procedures and safety precautions to ensure proper equipment operation and to avoid bodily injury. Read and follow the Safety Precautions and Instructions section at the beginning of this manual. Keep this manual with the equipment for future reference.

List of Related Literature

Figure 2 identifies related literature available for the generator sets covered in this manual. Only trained and qualified personnel should install or service the generator set.

Figure 2

Literature Type Part Number

Installation Manual, Model 6VSG Generator Set TP-6842

Service Manual, 6VSG Generator Set TP-6844

Operation Manual, OnCue

Operation Manual, SiteTech

Installation Instructions, Programmable Interface Module (PIM) TT-1584

Parts Catalog, Model 6VSG TP-6845

Software

™

Software

Figure 2 Related Literature

TP-6796

TP-6701

The equipment service requirements are very important to safe and efficient operation. Inspect the parts often and perform required service at the prescribed intervals. Obtain service from an authorized service distributor/dealer to keep equipment in top condition.

Figure 1

Figure 1 6VSG Generator Set

TP-6843 1/13 Introduction 9

Nameplate

GM12070

Emission Information

The following illustration shows a typical generator set nameplate. Copy the model, serial, and specification numbers from the nameplate into the spaces provided in the product information section on the inside front cover of this manual. See the service views in Section

1.7 for the nameplate location.

Figure 3

Figure 3 Typical Nameplate

The Kohler Model CH740 engine used on the 6VSG generator set is certified to operate using natural gas or LPG fuel.

The Emission Compliance Period referred to on the Emission Control or Air Index label indicates the number of operating hours for which the engine has been shown to meet CARB or EPA emission requirements. Figure 4 provides the engine compliance period (in hours) associated with the category descriptor, which may be found on the certification label.

Figure 4

Emission Compliance Period

EPA Category C

250 hours

CARB Moderate 125

hours

Category B

500 hours

Intermediate

250 hours

Category A 1000 hours

Extended 500

hours

Figure 4 Emission Compliance Period

Refer to the certification label for engine displacement. The exhaust emission control system for the CH740 engines (6VSG) is EM for U.S. EPA, California, and Europe. See Figure 1-2 for engine certification label location.

10 Introduction TP-6843 1/13

Service Assistance

For professional advice on generator set power requirements and conscientious service, please contact your nearest Kohler distributor or dealer.

• Consult the Yellow Pages under the heading Generators—Electric.

• Visit the Kohler Power Systems website at KOHLERPower.com.

• Look at the labels and stickers on your Kohler product or review the appropriate literature or documents included with the product.

• Call toll free in the US and Canada 1-800-544-2444.

• Outside the US and Canada, call the nearest regional office.

Headquarters Europe, Middle East, Africa (EMEA)

Kohler Power Systems 3 rue de Brennus 93200 Saint Denis France

Phone: (33) 1 49 178300

Fax: (33) 1 49 178301

Asia Pacific

Power Systems Asia Pacific Regional Office Singapore, Republic of Singapore

Phone: (65) 6264-6422

Fax: (65) 6264-6455

China

North China Regional Office, Beijing

Phone: (86) 10 6518 7950

(86) 10 6518 7951 (86) 10 6518 7952

Fax: (86) 10 6518 7955

East China Regional Office, Shanghai

Phone: (86) 21 6288 0500

Fax: (86) 21 6288 0550

India, Bangladesh, Sri Lanka

India Regional Office Bangalore, India

Phone: (91) 80 3366208

(91) 80 3366231

Fax: (91) 80 3315972

Japan, Korea

North Asia Regional Office Tokyo, Japan

Phone: (813) 3440-4515

Fax: (813) 3440-2727

Latin America

Latin America Regional Office Lakeland, Florida, USA

Phone: (863) 619-7568

Fax: (863) 701-7131

TP-6843 1/13 Service Assistance 11

Notes

12 Service Assistance TP-6843 1/13

Section 1 Descriptions and Service Views

KPS_048 GM77569

1.1 Introduction

The generator set specification sheets provide specific generator and engine information. Refer to the spec sheet for data not supplied in this manual. Consult the generator set service manual, engine operation manual, and engine service manual for additional specifications. Obtain copies of the latest spec sheets, manuals, diagrams, and drawings from your local distributor/dealer.

1.2 Engine

The generator set has a four-cycle, twin cylinder, air-cooled Kohler engine. The engine operates on cleanburning natural gas or LPG fuel. Engine features include:

• Efficient overhead valve design and full pressure lubrication for maximum power, torque, and reliability under all operating conditions.

• Dependable, maintenance-free electronic ignition.

• Precision-formulated cast iron construction of parts subjected to the most wear and tear.

1.4 Alternator

The 6VSG is a direct current (DC) output machine. It utilizes a 24-pole permanent magnet construction to create high frequency three-phase alternating current which is rectified to produce low-ripple DC output.

1.5 Controller

The Model 6VSG generator set comes equipped with the VSC controller. See Figure 1-1. The controller provides integrated control for the generator set and the optional programmable interface module (PIM) or optional communications kit interface board.

The controller’s two-line LCD screen displays status messages and system settings that are clear and easy to read in all lighting conditions, including direct sunlight and low light.

Figure 1-1

• Field-convertible multi-fuel systems that allow fuel changeover from natural gas to LPG (and vice versa) while maintaining CARB emission certification.

• The variable-speed engine runs at 2300 rpm at no load and 2900 rpm when supplying full load.

1.3 Generator Set Enclosure

The generator set is housed in a steel enclosure with Power Armor powder coat paint. The enclosure has a hinged, locking door that allows easy access to the generator set controller when required, but locks securely to prevent unauthorized access.

To open the door, insert the tool provided with the enclosure and turn counterclockwise 1/2 turn.

Be sure to close and lock the enclosure, and keep the tool in a secure location.

Figure 1-1 VSC Controller

1.5.1 VSC Controller Features

• Six-button keypad

◦ OFF, AUTO, and RUN pushbuttons

◦ Select and arrow buttons for access to system

configuration and adjustment menus

• LED indicators for OFF, AUTO, and RUN modes

• LED indicators for percentage of load being output

•LCD display

◦ Two lines x 16 characters per line

TP-6843 1/13 Section 1 Descriptions and Service Views 13

◦ Backlit display with adjustable contrast for

excellent visibility in all lighting conditions

• Scrolling system status display

◦ Generator set status

◦ Voltage and percent load

◦ Engine temperature

◦ Oil pressure

◦ Battery voltage

◦ Engine runtime hours

• Date and time displays

• Smart engine cooldown senses engine temperature

• Digital voltage regulation: ±1.0% RMS no-load to full-load

• Automatic start with programmed cranking cycle

• Programmable exerciser can be set to start automatically on any future day and time, and run every week or every two weeks

• Three exercise modes

• Front-access mini USB connector for SiteTech connection

• Integral Ethernet connector for Kohler

• Built-in 2.5 amp battery charger

• Remote two-wire start/stop capability

• Diagnostic messages

OnCue

™

◦ Displays diagnostic messages for the engine,

generator, and programmable interface module (PIM)

◦ Over 70 diagnostic messages can be displayed

• Maintenance reminders

• System settings

◦ System voltage and percent load

◦ Voltage adjustment

1.6 Accessories

The following optional accessories are offered for the 6VSG generator sets.

1.6.1 Carburetor Heater

An optional carburetor heater is recommended for improved cold starting in locations where the ambient temperature drops below 0°C (32°F). The carburetor heater prevents condensation and carburetor icing. The heater requires a continuous source of AC power.

See the generator set Installation manual for more information.

1.6.2 OnCue® Generator Management System

The Kohler® OnCue® Generator Management System allows monitoring and control of your 6VSG generator set from a personal computer located in your home or at other remote locations. OnCue configured to send email or text message notifications in the event of a generator set fault.

Note: Be sure to obtain the correct version of the

OnCue

OnCue generator sets.

kit for the VSC controller.

version 3.1 or higher is required for 6VSG

1.6.3 Programmable Interface Module (PIM)

The optional Programmable Interface Module (PIM) provides two programmable inputs and six programmable dry contact outputs for connection to customer-supplied equipment. The outputs are controlled by the VSC controller, and can also be controlled remotely using the OnCue

The PIM is mounted in a NEMA 3R aluminum enclosure, which can be mounted indoors or outdoors. See the installation instructions provided with the PIM.

1.6.4 Communications Kit

can also be

program.

◦ Measurement system, English or metric

• Programmable Interface Module (PIM) status displays

◦ Input status (active/inactive)

◦ Output status (active/inactive)

14 Section 1 Descriptions and Service Views TP-6843 1/13

The optional communications kit includes the following factory-installed items:

• Interface board with factory-set inputs and outputs and customer connection terminal blocks

• Fuel pressure switch

• Enclosure intrusion alarm switch

1.7 Service Views

kps_002.eps ADV-8060

1. Exhaust air outlet

2. Air cleaner

3. Oil fill

4. Oil drain

5. Oil drain valve

6. Oil filter

7. Muffler

8. Alternator air inlet

9. Customer connection blocks (located behind panel)

10. Electrical inlet access panel

11. Engine starting battery location (battery not included)

12. Lifting hole

13. Controller

14. Engine certification label

15. Load circuit breaker

16. Oil dipstick

17. Exhaust outlet

18. Fuel inlet

19. Electrical inlet

20. Battery cables (included)

21. Nameplate

Figure 1-2

Figure 1-2 Service View (see Figure 1-3 for optional communications kit components)

TP-6843 1/13 Section 1 Descriptions and Service Views 15

Figure 1-3

ComKitB GM85956C

1. Interface board (factory-wired to terminal blocks)

2. Intrusion alarm switch

3. Interface board input and output connection terminal blocks

4. Fuel pressure switch

Figure 1-3 Optional Communications Kit Components

16 Section 1 Descriptions and Service Views TP-6843 1/13

Section 2 Generator Set Operation

KPS_105

KPS_106

2.1 Theory of Operation

The generator set utilizes a permanent-magnet alternator to produce 3-phase AC voltage. This voltage is rectified using a full-wave 3-phase rectifier (single block rectifier for 36V and 48V, three individual rectifier blocks for 24V) to produce low-ripple DC output. See Figure 2-1 and Figure 2-2.

Figure 2-1

The VSC measures the average DC voltage on the output and lists this on the auto-scrolling display, in the Overview menu and in the Generator metering menu.

Figure 2-1 Basic VSG Power Connections

Figure 2-2

Figure 2-2 Output Waveform, with Rectified Signal

The voltage is regulated to maintain a constant output voltage, which is equal to the System Voltage setting. When the load on the 6VSG generator increases, the generator controller increases the engine speed. The 6VSG series is designed to produce rated voltage at 2300 rpm with no load and at 2900 rpm when supplying full load. The output current and power increase with the engine speed. The engine speed is limited to a maximum of 2900 rpm. See Section 3.14.1 for more information.

2.2 Prestart Checklist

To ensure continued satisfactory operation, perform the following checks or inspections before or at each startup, as designated, and at the intervals specified in the service schedule. In addition, some checks require verification after the unit starts.

Air Cleaner. Check for a clean and installed air cleaner element to prevent unfiltered air from entering the engine.

Air Inlets. Check for clean and unobstructed air inlets.

Battery. Check for tight battery connections. Consult

the battery manufacturer’s instructions regarding battery care and maintenance.

Enclosure. Check that all enclosure panels and internal baffling are in place.

TP-6843 1/13 Section 2 Generator Set Operation 17

Exhaust System. Check for exhaust leaks and blockages. Check the muffler condition.

• Inspect the exhaust system components for cracks, leaks, and corrosion. Check for tight exhaust system connections.

• Check for corroded or broken metal parts and replace them as needed.

• Check that the exhaust outlet is unobstructed.

Oil Level. Check the oil level before starting the generator set and at the intervals given in Section 4, Scheduled Maintenance. Maintain the oil level at or near, not over, the full mark on the dipstick.

Operating Area. Check for obstructions that could block the flow of cooling air. Keep the air intake area clean. Do not leave rags, tools, or debris on or near the generator set.

2.3 Exercising the Generator Set

2.4.3 Engine Start Crank Cycle

The controller attempts to start the generator set three times (three crank cycles, 15 seconds crank and 15 seconds off). If the generator set does not start in three attempts, the system shuts down on an overcrank fault. See Section 2.6.

Cranking 1, 2, and 3 are displayed during the crank cycle. Pressing the OFF button during the crank cycle stops the cranking. No other buttons are acknowledged during the crank cycle.

2.4.4 Engine Cooldown

The engine cooldown time delay allows the engine to run after the loads have been removed.

The engine cooldown time delay is set to 5 minutes. The engine stops before the cooldown time delay expires if the temperature drops below the cooled-down temperature level, or if the temperature rises above the high limit during the cooldown cycle.

Operate the generator set without load once each week or every 2 weeks for 20 minutes. See Section

2.5, Exercise. For instructions to set the exerciser, see

Section 3.6.

2.4 Generator Set Operation

2.4.1 Local Starting and Stopping

Start: Press the RUN button to immediately start the

generator set.

Stop: Press the OFF button. The engine stops.

Run the generator set with no load for at least 2 minutes to ensure adequate engine cooldown.

2.4.2 Remote Starting and Stopping

The generator set must be in automatic mode for remote operation. Press the AUTO button on the VSC controller.

A remote switch connected to terminals 3 and 4 can be used to start and stop the generator set. Close the switch to start and run the generator set. Open the switch to stop the generator set.

2.4.5 Automatic Operation

The 6VSG monitors the voltage of a storage battery bank connected to (+) and (–) of the output block to determine charge condition of the storage battery (see Figure 2-3).

• If the storage battery voltage falls below the minimum voltage for more than 3 minutes, or if a remote start command is received, the generator set starts. A remote start command can be activated by closing the remote start contacts across 3 and 4 or by a start exercise command.

• When the generator set load falls below the minimum % load for more than 3 minutes, or a remote stop command is received, the generator set stops. A remote stop command can be caused by opening the remote start contacts across 3 and 4 or by the exercise time ending.

The minimum voltage, minimum load, and time delays are adjustable using a personal computer and Kohler SiteTech™ software. Contact your Kohler distributor.

Run the generator set with no load for at least 2 minutes to ensure adequate engine cooldown.

18 Section 2 Generator Set Operation TP-6843 1/13

Figure 2-3

1. Positive (+)

2. Negative (–)

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.

KPS_043B

Figure 2-3 Output 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.

2.6.1 Warnings

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.

2.6.2 Shutdowns

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.

1. Unloaded Full Speed Exercise. The generator

2. Unloaded Cycle Exercise. The generator set

TP-6843 1/13 Section 2 Generator Set Operation 19

regulates the output load below 5% of capacity. The generator will stop after 20 minutes.

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.

2.6.3 Resetting the Controller After a

Overview ---->

1.2 h

Fault Message

tp6809

Confirm Clear Fault: NO

Confirm Clear Fault: YES

Fault Message

Press UP arrow button.

Fault Shutdown

2. Press Select again. The active fault message is displayed.

Always identify and correct the cause of a fault shutdown before resetting the controller. Check the fault message displayed on the controller and refer to Figure 2-5 to identify and correct the fault condition before proceeding. Contact an authorized distributor/dealer for service, if necessary.

Press the OFF button to reset the controller, or follow the procedure below. See Figure 2-4.

1. While the fault message is displayed, press the Select button to go to the Overview menu.

Figure 2-4

3. Press Select. Confirm Clear Fault: NO is displayed.

4. Press the UP arrow button. Confirm Clear Fault: YES is displayed.

5. Press the Select button to enter YES and clear the fault.

6. Press the Select button to return to the overview menu. The controller changes to OFF mode.

7. Press AUTO to put the generator set into automatic mode.

Figure 2-5

Figure 2-4 Clearing a Fault on the VSC Controller

Warning (W) or

Fault Message

Accy PwrOver Warning

Aux Input SD * Auxiliary input. An optional customer-connected

Batt Chg Flt W Battery charger fault. Input to PIM from an

Battery Voltage CrLow

Battery Voltage High

Battery Voltage Low

20 Section 2 Generator Set Operation TP-6843 1/13

Shutdown (SD) Condition Check

W Accessory Power Overload. Too many devices

W Engine starting battery voltage is critically low,

W Engine starting battery voltage rises above

W Engine starting battery voltage falls below

on the accessory power port or an over current fault (short circuit) on the accessory controller power output. (Feeds RBUS devices - PIM)

input is closed. (Digital input from optional PIM.)

external battery charger (not the built-in battery charger).

less than 10.5 VDC.

16 VDC for more than 10 seconds. Inhibited during the engine crank cycle.

Clears when the battery voltage returns to an acceptable level.

12.5 VDC for more than 90 seconds when the engine is not running.

Not operative during the engine crank cycle. Clears when the battery voltage returns to an acceptable level.

Contact an authorized distributor/dealer for service.

Check customer-supplied equipment.

Check external battery charger.

Check the battery rating and condition.

Check the battery charger operation. Charge or replace the battery.

Check the battery rating and condition.

Check the battery charger operation.

Check the battery rating and condition.

Check the battery charger operation. Charge or replace the battery.

Warning (W) or

Fault Message

Enclosure Intrusion Alarm

Shutdown (SD) Condition Check

W The enclosure door is open. (Optional

communications kit required.)

Check for evidence of unauthorized access to the generator set. Close and lock the enclosure door.

Engine Oil Pressure Low

SD * The LOP switch indicates low oil pressure for

more than 5 seconds. Function becomes active 30 seconds after crank disconnect (30 second inhibit). Note: The low oil pressure shutdown does not protect against low oil level. Check the

Check for leaks in the lubrication system.

Check the oil level and add oil if the level is low.

engine oil level regularly as recommended in Section 4.

Fuel Pressure Low

W The fuel pressure switch measures low fuel

pressure (below 4.5 inches water column).

Check fuel supply and fuel lines.

(Optional communications kit required.)

Engine Speed High

Exer Not Sch W Exercise not scheduled. No exercise is

Generator VoltageL1-L2 High

Lo Crank Vlt W Low cranking voltage. Battery voltage falls below

SD * Engine speed exceeds 115% of the normal

running speed for more than 0.3 seconds.

scheduled on the controller.

SD * Generator voltage high. Output voltage exceeds

120% of the system nominal voltage for more than 2 seconds.

Contact an authorized distributor/dealer for service.

See Section 3.6 for instructions to set the exerciser.

Contact an authorized distributor/dealer for service.

Charge or replace the battery. 8 VDC for more than 6 seconds while the starter is engaged.

Locked Rotor SD No engine rotation is sensed during cranking.

Shuts down 3 seconds after the fault is detected.

Check the battery.

Check for loose connections.

Contact an authorized

distributor/dealer for service.

MainPwrOverL Shutdown

Not in Auto W The generator set is not in Automatic (standby)

SD Main power overload. An over current fault on the

controller output (short circuit).

mode. Remote start and stop commands from a transfer switch or remote switch will be ignored.

Contact an authorized

distributor/dealer for service.

Press AUTO to place the generator

set in Automatic mode, when

appropriate.

Over Crank SD Three unsuccessful starting attempts. Check the fuel supply, spark plug, and

battery.

Check for loose connections.

Contact an authorized

distributor/dealer for service.

Reserve Oil Empty

W The oil makeup kit reservoir bottle is empty.

(Optional communications kit and oil makeup kit

Add oil to the oil makeup kit reservoir.

required.)

Speed Sensor Fault

SD Engine speed sensing has failed or engine

stalled.

Contact an authorized

distributor/dealer for service.

* Engine cooldown runs before shutting down.

Figure 2-5 Controller Fault Messages

TP-6843 1/13 Section 2 Generator Set Operation 21

Notes

22 Section 2 Generator Set Operation TP-6843 1/13

Section 3 VSC Controller Operation

KPS_049 GM77569

1. User interface (see Figure 3-2)

2. Service access (see Section 5.4)

6789

KPS_050 GM81498

1. 2-line LCD display

2. Up button

3. Select button

4. Down button

5. RUN button and LED

6. 100% load LED

7. 75% load LED

8. 50% load LED

9. 25% load LED

10. OFF button and LED

11. AUTO button and LED

3.1 VSC Generator Set Controller

All 6VSG generator sets are equipped with the VSC generator set controller.

The VSC controls generator set and the optional Programmable Interface Module (PIM) or Communications Kit.

The VSC controller features include:

• Two-line x 16 character backlit digital display with adjustable contrast

• OFF, AUTO, and RUN generator set master control buttons

• Generator set status indicating LEDs (OFF, AUTO, RUN)

• Up, Down, and Select buttons for navigation through menus and adjustments

• Power system indicator LEDs to show power output of the generator

3.2 Control and Indicators

Figure 3-1 illustrates the VSC controller. See Figure 3-2 for details of the controller’s user interface.

Figure 3-1

Figure 3-1 VSC Controls and Indicators

Figure 3-2

TP-6843 1/13 Section 3 VSC Controller Operation 23

Figure 3-2 VSC User Interface

3.2.1 Controller Keypad

3.2.2 LED Indicators

The RUN, OFF, and AUTO buttons control the generator set as described in Figure 3-3.

Use the Select, Up arrow, and Down arrow buttons to navigate through the menus and change settings, if necessary. See Section 2.4 for operation instructions.

LEDs above the RUN, OFF, and AUTO buttons indicate the mode of operation as shown in Figure 3-4.

Load indication LEDs indicate the load on the generator set. A steadily lighted LED indicates that the load on the generator set is greater than or equal to the level label for that LED. The next LED flashes and stays on for a longer time as the load increases.

Figure 3-3

Button Button Function

RUN Starts the generator set. The engine start time delay is ignored.

OFF Stops the generator set. The cooldown time delay is ignored.

During the engine crank cycle, pressing OFF will stop the crank cycle.

Press OFF to clear faults and reset the controller.

AUTO Places the generator set in Automatic (standby) mode.

Down arrow Use to navigate through menus and change settings. This manual contains instructions

Select

Up arrow

to navigate the controller menus and adjust settings on the VSC controller.

Figure 3-3 VSC Controller Pushbutton Operation

Figure 3-4

LED LED Operation

RUN Lights when the generator set has been started locally by pressing the RUN button.

Remote start and stop commands are ignored.

OFF Lights for 2 seconds, then flashes every 2 seconds when the generator set and controller

AUTO Lights when the generator is in automatic (standby) mode. Generator set will respond to

25% load LED flashes and stays on longer as load increases from 1% to 25%.

50% load LED flashes and stays on longer as load increases from 26% to 50%.

75% load LED flashes and stays on longer as load increases from 51% to 75%.

100% load LED flashes and stays on longer as load increases from 76% to 100%.

are off. Remote start/stop commands have no effect. The exercise cycle will not run.

In Auto mode, OFF LED flashes quickly to indicate a fault shutdown. Attention required. Identify and correct the fault condition before resetting the controller.

engine start and stop commands from the controller (for example, exercise start and stop commands) or an ATS. Time delays operate as described in Section 2.4.

Figure 3-4 VSC Controller LED Operation

24 Section 3 VSC Controller Operation TP-6843 1/13

3.2.3 LCD Display

Genset Status Running

Voltage: 54V Load: 73%

Engine: 125F Oil Pressure: Okay

Battery

13.3V

Engine Runtime:

100.6 h

Date: 02DEC2011 Time: HR:MNpm

Active Alert

Sample data shown.

tp6804

Battery

13.3V

Engine Runtime:

100.6 h

Date: 02DEC2011 Time: HR:MNpm

Next Maintenance: 150 h or Mar2012

Sample data shown.

Genset Status Standby

Active Alert

Next Exercise: 09:00p 09Dec2011

The controller is equipped with a two-line x 16-character backlit digital display with adjustable contrast. When the generator is running, the controller automatically scrolls through the displays shown in Figure 3-5. The VSC controller measures and displays the average DC output voltage on the auto-scrolling display. When the system is in standby mode and the controller is in AUTO, the screens shown in Figure 3-6 are displayed.

When a fault or warning condition exists, the controller will show the corresponding message. See Section

2.6 for more information about faults.

Controller menus display power system information, including status information for the engine, generator, and optional RBUS accessories, exercise settings, and event history. Some menus allow changes to the controller settings. See Sections 3.7 through 3.18 for menu diagrams.

Figure 3-5

The display contrast is adjustable. Navigate to the Genset System menu and step down to the Contrast screen. Press the Select button, and then use the up and down arrow buttons to adjust the contrast. See Section 3.5, Changing Settings, and Section 3.14, Genset System Menu.

The display backlight turns off after about a minute of no activity. The backlight turns on when a button is pressed or when the generator set starts.

Figure 3-6

Figure 3-5 Autopaging Displays, Generator Running

Figure 3-6 Autopaging Displays, Automatic Mode

TP-6843 1/13 Section 3 VSC Controller Operation 25

3.3 Controller Power

3.5.1 Procedure to Change Settings

The VSC controller is powered by the generator set engine starting battery and the built-in battery charger.

Note: To disconnect controller power, disconnect the

AC power to the generator set starting battery.

If controller power is disconnected and reconnected, you will be prompted to set the time, date, and exerciser. The first setting will flash. Press the Up and Down arrow buttons to change the setting. Press Select to save the setting and move on to the next. Repeat until all settings are saved and the controller returns to the main menu. See Section 3.5 for more detailed instructions to change settings on the VSC. See Section 3.6 for more detailed instructions to set the exerciser or change the exercise settings.

3.4 Battery Charging

The controller includes a built-in battery charger to maintain the engine starting battery. The VSC controller monitors the battery voltage and provides a constant 13.8 ±2% VDC voltage and maximum

2.5 amps to charge the battery.

The installer must connect 120 VAC/60Hz power on a breaker-protected circuit for the built-in battery charger.

3.5 Changing Settings

Some settings can be changed from the controller keypad. The controller settings and generator set output are factory-set and should not require field adjustment under normal circumstances. Check and adjust the settings and/or output when:

• The controller has been replaced.

1. Press the Select button to enter the main menu.

2. Press the down arrow button until the desired menu is displayed.

3. Press the Select button to enter the genset system displays. See Figure 3-10.

4. Press the down arrow button to step through the generator set system settings.

5. To change any of the genset system settings, press the Select button. The selected setting flashes.

6. Press the up or down arrow buttons to increase or decrease the setting.

7. When the desired setting is shown, press Select. The value stops flashing. If there are additional adjustable settings on the screen, the next setting flashes. For example, in the date menu, the day, month, and year can be adjusted. The settings are saved on completion of step 7.

8. Repeat steps 6 and 7 for each setting on the screen.

9. Press the down arrow to step to the next screen.

10. To exit, press the down arrow button until Return is displayed. Press the Select button to exit the menu.

11. Press the AUTO or OFF button to exit the main menu.

Note: If no buttons are pushed, the controller

exits the menus and returns to the generator set status display after 5 minutes.

• The voltage requires adjustment for a particular application.

• Troubleshooting generator set problems.

Have controller setup and adjustment performed only by an authorized Kohler distributor/dealer or authorized representative.

The following procedure explains how to change settings. See Figure 3-7 for an example using the Date and Time settings.

Note: Use caution when navigating the controller

menus. In some menus, pressing the Select button can enable editing of the controller settings. Changing the settings to incorrect values can adversely affect generator set operation or render the unit inoperable.

26 Section 3 VSC Controller Operation TP-6843 1/13

Figure 3-7

1. Press the Select button to enter the main menu.

2. Press the down arrow button until the desired menu is displayed. See Figure 3-9. Date and Time are used for this example.

3. Press the Select button to enter the Date and Time menu.

4. To change the date and time settings, press the Select button again. The year will flash.

5. Press the up or down arrow buttons to change the year.

6. When the correct year is shown, press the Select button. The year is saved and the next setting (month) flashes.

7. Repeat steps 5 and 6, using the arrow and select buttons to set the month and the date.

Press:

Changing Date/Time

Press: Display:

Overview ---->

1.2 h

Display:

Press: Display:

Date ---->

and Time

Date:

05Dec2011

8. When the correct date is shown, press the Select button. The saved date is shown.

9. Press the down arrow button to step to the next menu.

10. Repeat steps 5 and 6, using the arrow and select buttons to set and save the time.

Note: To change from am to pm, press the up arrow

key to increase the hour until the correct hour and pm is displayed.

11. In the time format menu, press Select and then press the up or down arrow button to change the format, 12 hr. or 24 hr. Press Select to save the displayed format.

12. Press the down arrow button. Return is displayed.

13. Press Select to return to the Date and Time menu.

14. Press the Up or Down arrow buttons to step to a different menu.

15. Press Auto to signal the controller to exit the menus and return to the generator set status display.

Note: If no buttons are pressed, the controller returns

to the status display after 5 minutes.

Press:

Display:

Press: Display:

<---- Return

Press: Display:

Time:

01:49pm

Date ---->

and Time

AUTO

Press:

Display:

Genset State

Standby

Date:

05Dec2011

Date:

05Dec2012

Press: Display:

Date:

05Dec2012

Press: Display:

Date:

03Jan2012

Figure 3-7 Changing Settings

TP-6843 1/13 Section 3 VSC Controller Operation 27

3.6 Setting the Exerciser

Set the exerciser to automatically run the generator set for 20 minutes every week or every two weeks.

3.6.1 Setting the Exerciser at Controller Power-up

When battery power is connected to the controller, you will be prompted to set the date and time, and then to set the exerciser.

The first setting will flash. Press the Up and Down arrow buttons to change the setting. Press Select to save the setting and move on to the next. See Section

3.5 for more detailed instructions to change settings on

the VSC.

If the battery is disconnected and reconnected during generator set maintenance or service, the time, date, and exercise settings will need to be re-entered.

3.6.2 Changing the Exercise Settings

This section explains how to change the exercise settings after the initial setup.

10. Repeat steps 5 through 9 to change the next item on the line until the desired settings are displayed.

11. Press Select to save after all settings have been selected. Settings will stop flashing.

12. Set the exercise frequency (weekly or every two weeks). Weekly exercises are recommended.

13. Press the down arrow button to step to the Return menu. Press the Select button to return to the main menu.

After a scheduled exercise run, the next exercise time and date will be updated automatically based on the Exercise Frequency setting.

Exerciser Reset

To reset the exerciser to run at a different day and/or time or to change the exercise mode, follow the procedure in Section 3.6.2 to change the exerciser settings.

Follow the procedure below and see the flowchart in Figure 3-8 to set the exercise time and date, mode, and frequency.

Procedure to Set the Exerciser

1. Press the AUTO button on the controller.

2. Press the Select button to go to the main menu. See Figure 3-9.

3. Press the down arrow button to step to the Genset System menu.

4. Press the Select button to enter the Genset system menu. See Figure 3-11.

5. Use the down arrow button to step to the Next Exercise menu. If the exerciser is not set, No Exercise Scheduled will be displayed.

6. Press and HOLD the Select button to enable editing.

7. Press the Select button. The setting flashes to show that it can be changed. For example, HR flashes to show that the hour can be changed.

8. Press the Up or Down arrow buttons to change the setting.

9. Press the Select button to save the setting and move to the next. For example, save HR setting and move to MN.

28 Section 3 VSC Controller Operation TP-6843 1/13

Figure 3-8

Genset ---->

System

System Voltage:

54.0V

Auto Start Volt: (V)

Auto Stop Load: (%)

Load Limit: (%)

Fuel Type: Natual Gas

Next Exercise *

HR:MN PM MM/DD/YY

HOLD:

Next Exercise

HR:MN PM MM/DD/YY

Exercise Mode:

Loaded

Exercise Freq:

Weekly

Language: English

Contrast:

<---- Return

HOLD:

Exercise Mode: Loaded Full Sp Unloaded Cycle Loaded Full Sp

HOLD:

Exercise Freq:

Weekly/Bi-Weekly

tp6804

* If the exerciser has not been set, No Exercise Sch will be displayed.

Figure 3-8 Procedure to Set the Exerciser on the VSC Controller

TP-6843 1/13 Section 3 VSC Controller Operation 29

3.7 VSC Controller Menus

Overview ---->

1.2 h

Engine ----> Metering

Generator----> Metering

Genset ----> Information

Genset ----> Run Time

Date ----> and Time

Genset ----> System

Event Log---->

PIM ----> Status

Network -- --> Information

Status Displays

Press the Up and Down arrow buttons to move between menus. Press OFF or AUTO to exit the menus.

Diagrams in the following sections show how to navigate through the menus.

Note: Use caution when navigating the controller

Figure 3-9

If a setting on the controller display is flashing, edit mode has been enabled. Press the OFF or AUTO button to exit the edit mode.

3.8 Main Menu

Press the Select button once to bring up the main menu. Overview is displayed. See Figure 3-9. Press the down arrow button to step to the next menu, Engine Metering. Use the UP and DOWN arrow buttons to step up and down through the menus shown in Figure 3-9.

The controller will exit the main menu after 5 minutes if no buttons are pressed. To exit the main menu immediately, press the controller’s OFF or AUTO button.

Figure 3-9 VSC Main Menu

30 Section 3 VSC Controller Operation TP-6843 1/13

3.9 Overview Menu

Overview ---->

1.2 h

Active Alert (if any)

Genset Status Standby

Generator: 54V % Load 73%

Engine: 125F Oil Pressure: OK

Battery:

13.3V

Engine Runtime:

100.6 h

Date: 02DEC2011 Time: HR:MNpm

Next Exercise: 09:00p 09Dec2011

Next Maintenance: 150 h or Mar2012

SW Version:

4.06

<---- Return

tp6810

Eng Speed:

2300 R/min

Battery:

13.3 V

<---- Return

Engine ---->

Metering

Oil Pressure: Switch: OK

Oil Temperature:

125 F

Figure 3-10

3.10 Engine Metering Menu

The engine metering menu displays engine status information as shown in Figure 3-11. This menu displays status information only. No settings can be changed from this menu.

Figure 3-11

Figure 3-11 Engine Metering Menu

Figure 3-10 Overview Menu

TP-6843 1/13 Section 3 VSC Controller Operation 31

3.11 Generator Metering Menu

DANGER

Generator ---->

Metering

Reset Calibration

<---- Return

Reset Calib? No

Volts:

54.0V

Reset Calib? Yes

Load:

73%

Reset

Calibration

The generator metering menu displays the generator voltage and % load. See Figure 3-12.

Figure 3-12

3.11.1 Calibration

Hazardous voltage. Will cause severe injury or death.

This equipment must be installed and serviced by qualified electrical personnel.

The calibration mode can be entered from the Generator Metering menu. Contact a Kohler-authorized distributor/dealer for service.

The Reset Calibration menu allows you to set the readings back to the default settings after calibration, if necessary. See Figure 3-12.

Figure 3-12 Generator Metering Menu

32 Section 3 VSC Controller Operation TP-6843 1/13

3.12 Generator Set Information

tp6804

Genset M/N:

6VSG-48V

Genset S/N:

Controller S/N:

<---- Return

Genset ----> Information

########

tp68

Eng Runtime:

100.6 h

Eng Starts:

127

<---- Return

Genset ----> Run Time

Next Maintenance:

150 h or Mar2012

The generator set model number and serial numbers are displayed (see Figure 3-13). No changes are allowed from this menu.

Model and serial numbers are factory-set and should not require changes in the field, except in the event that the controller is being replaced. A personal computer running Kohler required to enter the generator set model number and serial numbers on a replacement controller. Contact an authorized Kohler distributor/dealer for service.

Figure 3-13

SiteTech™ software is

3.13 Genset Run Time Menu

The data shown in Figure 3-14 are displayed. No changes are allowed from this menu.

The Next Maintenance menu shows the number of hours of generator set operation until maintenance is required. The estimated date for the next scheduled maintenance is also displayed. The maintenance reminder intervals are based on the engine manufacturer’s recommendation for changing the oil. See Section 4, Scheduled Maintenance, for maintenance instructions.

After changing the oil and performing other recommended maintenance, go to the Overview menu to reset the maintenance timer. See Section 4.2.5 for instructions to reset the maintenance timer.

Figure 3-14

Figure 3-13 Generator Set Information Menu

Figure 3-14 Generator Set Run Time Menu

TP-6843 1/13 Section 3 VSC Controller Operation 33

3.14 Genset System Menu

The genset system menu displays the system information shown in Figure 3-19. Generator sets are factory-set and should not require changes to the system settings in the field.

A Kohler-authorized distributor or dealer can adjust these settings, if necessary. If the generator set is reconnected to a different voltage or the system settings require adjustment for some other reason, see Section 3.5 for instructions to enable editing and change the system settings.

Note: Use caution when navigating the controller

3.14.1 System Parameters for Battery Bank Charging

System Voltage: The system voltage is the output

voltage of the generator set. Default values are shown in Figure 3-15. The system voltage is set to the required output voltage to properly support the load and charge the battery. Do not confuse this value with the voltage designation of the battery stack. For example, four 12V batteries in series results in a 48V battery stack, but the output voltage needed to charge the battery stack is 54V.

Figure 3-15

Nominal Voltage 24V 36V 48V

Default System Voltage, VDC 27 40.5 54

Figure 3-15 System Voltage Default Settings

Refer to the battery manufacturer’s documentation for the recommended charging voltage. If the system voltage needs to be changed, contact an authorized Kohler distributor or dealer.

Note: Setting the system voltage to a higher value

than the factory default setting will decrease the power output of the generator set.

The following system parameters can be viewed in the Genset System menu on the user interface on the generator set’s VSC controller.

•System Voltage

• Auto Start Voltage

• Auto Stop Load (%)

• Load Limit

Note: Changing these settings can damage your

generator set and batteries. Always refer to the information provided by the battery bank manufacturer for the correct voltage and charge current limits for your batteries. Contact an authorized Kohler distributor or dealer for assistance if the default settings are not appropriate for the battery bank.

A 6VSG set at the system voltage shown in Figure 3-15 will have an output of 6 kW. If the system voltage is set to a higher value, the output current decreases. The available power output also decreases below 6 kW due to the limits on the engine speed. The graphs in Figure 3-17 illustrate the effect of changing the system voltage.

Auto Start Volt: The 6VSG will automatically start when the battery bank voltage has reached or fallen below this value for 180 seconds (3 minutes). Default settings are shown in Figure 3-16.

Figure 3-16

Nominal Voltage 24V 36V 48V

Default Auto Start Voltage, VDC 25 37.5 50

Figure 3-16 Auto Start Voltage

Note: The 3-minute (180-second) time delay can be

changed using a personal computer (laptop) and Kohler

SiteTech™ software. Contact a Kohler authorized distributor or dealer to adjust the delay setting, if necessary.

34 Section 3 VSC Controller Operation TP-6843 1/13

Figure 3-17

KPS_104

Figure 3-17 Effect of Changing the System Voltage Setting

Auto Stop Load: The auto stop load is set as a

percentage of full load. As the battery bank approaches the fully charged state, the charge rate slows, and the load on the generator set decreases. The 6VSG will automatically stop when the load has reached or fallen below the Auto Stop Load setting for 180 seconds (3 minutes). The default setting is 40% load.

Load Limit =

(Recommended charging voltage (VDC) x Maximum charging current (amps)) x 100

Nominal Voltage 24V 36V 48V

System Voltage, VDC 27 40.5 54

Maximum Current at 100% Load Limit, Amps 222 148 111

Figure 3-18 Maximum Charge Current at Default Load Limit Setting of 100%

Load Limit (%): This setting limits the current output

to the maximum charge rate specified by the battery manufacturer or load in the application. The default setting is 100%, which gives the maximum current values shown in Figure 3-18. Refer to the battery manufacturer's recommended maximum charge rate and contact an authorized Kohler distributor or dealer if the setting needs to be changed.

6000 watts

Figure 3-18

TP-6843 1/13 Section 3 VSC Controller Operation 35

tp6804

System Voltage:

54.0V

50V

40%

100%

Genset ---->

System

Auto Stop Load:

Load Limit:

Natural Gas

Fuel Type:

Auto Start Volt:

Language:

<---- Return

Next Exercise *

1:00PM 02/12/1011

Exercise Freq:

Weekly

English

Exercise Mode:

Loaded Ful Sp

Contrast:

* If the exerciser has not been set, No Exercise Sch will be displayed.

3.14.2 Setting the Exerciser

Use the Genset System menus to set the generator set exerciser. See Section 2.5 for instructions to set the exerciser and for more information about exercising the generator set.

After a scheduled exercise run, the Next Exercise time and date will be updated automatically based on the Exercise Frequency setting.

3.14.3 Adjusting the Display Contrast

To adjust the display contrast, use the down arrow button to step to the Contrast menu. Press the Select button, and then use the up and down arrow buttons to adjust the contrast. Press the Select button to save the contrast setting.

Figure 3-19

36 Section 3 VSC Controller Operation TP-6843 1/13

Figure 3-19 Genset System Menu

3.15 Date and Time Menu

tp6804

Date:

02Dec2011

Time:

12:34pm

Time Format:

12hr

Date and Time

To change the date and time, press the Select button See Figure 3-7 for instructions.

<---- Return

tp6810

Networking----> Information

Networking----> Status

RBUS ---->

Information

<---- Return

Networking---->

Configuration

See Figure 3-22.

See Figure 3-23.

See Figure 3-24.

The date and time will typically be set at controller powerup. To change the date, time, or time format (12 hour or 24 hour), use the Date and Time menu. See Figure 3-20.

3.16 Networking Information Menus

Use the networking menus to view and adjust communication settings for systems with remote RBUS devices such as a PIM, and for systems that use the Kohler System.

RBUS is a proprietary RS-485 communications protocol.

The Networking Information menu leads to submenus for network and RBUS communication settings. See Figure 3-21.

Figure 3-21

OnCue® Generator Management

Figure 3-20

Figure 3-20 Date and Time Menu

Figure 3-21 Networking Information Menu

TP-6843 1/13 Section 3 VSC Controller Operation 37

3.16.1 Networking Status Submenu

tp68

IP Address:

123.456.789.123

Gateway:

123.456.789.123

<---- Return

Subnet Mask:

123.456.789.123

DHCP:

Enabled

Ethernet Status:

Disconnected

DNS 1:

123.456.789.123

DNS 2:

123.456.789.123

OnCue Server:

123.456.789.123

OnCue Status: Connected

Networking---->

Status

Networking----> Information

The Networking Status submenu contains settings for OnCue Operation Manual for information about the appropriate network settings for OnCue these settings are not typically required.

Figure 3-22

. See Figure 3-22. See the OnCue® Software

. Changes to

If DHCP is enabled, IP parameters are not displayed. If DHCP is disabled (i.e., if a static IP address is used), the IP parameters are displayed.

To enable or disable DHCP and change the IP settings, go to the Networking Configuration menu. See Section 3.16.2.

Figure 3-22 Network Status Submenu

38 Section 3 VSC Controller Operation TP-6843 1/13

3.16.2 Networking Configuration

tp6804

<---- Return

DHCP: Enabled

Reset OnCue Password

Reset OnCue Password? No

S/N: 1234567 New PW: 12345

Press Select to enter YES or NO as displayed. New password is displayed for approximately 10 seconds.

Networking Configuration

HOLD

Reset OnCue Password? Yes

UP arrow for YES, Down arrow for NO.

Networking----> Information

Networking---->

Status

Submenu (OnCue® Password)

The networking Configuration menu includes settings used for communication with the Kohler Generator Management System. See Figure 3-23.

For most applications, DHCP is enabled and the IP settings cannot be changed from the controller keypad. If DHCP is enabled, IP parameters are not displayed.

If DHCP is disabled (i.e., if a static IP address is required), then the IP parameters can be modified. For applications that require static IP addresses, press and hold the select button to enable editing, disable DHCP, and then step to the next parameters and enter the information.

Figure 3-23

OnCue

If an error occurs while setting a parameter, an error message is displayed and then the controller exits the edit mode. Previous settings are preserved.

Password

For the initial OnCue reset the OnCue and then enter it into the OnCue

setup, you will be required to

password on the VSC controller,

software. To reset

the password, follow the instructions in Section 3-22.

Note: The password is displayed for only 10 seconds.

Be sure to write down the password and serial number.

A new password is generated each time the reset password procedure is performed. If the password is reset after the OnCue

system has been set up, the connection will be lost. Enter the new password in OnCue

to reconnect.

Figure 3-23 Network Configuration Submenu

TP-6843 1/13 Section 3 VSC Controller Operation 39

3.16.3 RBUS Information

tp6804

Modules Connected: 3

Module Timeouts: 1234

Net Cycle Time: 123ms

Module Errors: 1234

< ---- Return

Remote ----> Devices

See Figure 3-25.

Networking---->

Information

Networking----> Status

RBUS ---->

Information

<---- Return

Networking----> Configuration

The RBUS Information menu contains settings for remote modules that communicate with the VSC controller using RBUS protocol (see Figure 3-24). This includes the following optional modules:

Programmable Interface Module (PIM)

Figure 3-24

Figure 3-24 VSC Information Submenu

40 Section 3 VSC Controller Operation TP-6843 1/13

3.16.4 Remote Devices Submenu

tp6804

Module Status: Connected

Firmware Ver.: 122

Module ID: 12

S/N: XXXXXXXXX <<*DeviceType*>>

Return ---->

S/N: XXXXXXXXX <<*DeviceType*>>

Comm. Errors: 12345

Comm. Timeouts: 12345

(Dis)Connected: MM/DD/YY 12:12 PM

<---- Return

Connected: Displays the date and time that the device was connected. Disconnected: Displays the last date and time of successful communication.

Remote ----> Devices

From Figure 3-24:

Check the status of remote devices communicating through RBUS (see Figure 3-25). Device types can include:

Programmable Interface Module (PIM)

The serial numbers for the PIM are printed on the circuit boards inside the enclosures.

Figure 3-25

Figure 3-25 Remote Devices Submenu

TP-6843 1/13 Section 3 VSC Controller Operation 41

3.17 Programmable Interface

* PIM Status displays the interface board status if the optional communications kit with factory-installed interface board is installed.

PIM Status:

P I M 1 -- -- >

<---- Return

Input 1 In/Active

Output 1: In/Active

Input 2 In/Active

Output 2: In/Active

Output 3: In/Active

Output 4: In/Active

Output 5: In/Active

Output 6: In/Active

<---- Return

Module (PIM) Status Menu

Note: The PIM status menu appears if a

programmable interface module (PIM) or a communications kit interface board (IB) is connected.

The PIM status menu displays the status of inputs and outputs connected to the programmable interface module (PIM) or communications kit interface board (IB). See Figure 3-26. This is a status display menu only. Input and output settings cannot be changed from the VSC controller’s user interface.

Figure 3-26

A personal computer running Kohler

SiteTech

™

software is required to change the input and output settings for the PIM. Contact an authorized distributor or dealer for service.

The Kohler

OnCue® Management System can be used to turn the PIM outputs on and off. See the OnCue

Software Operation Manual for instructions.

The input and output settings for the communications kit interface board are factory set and locked.

Figure 3-26 Programmable Interface Module (PIM) Status Menu

42 Section 3 VSC Controller Operation TP-6843 1/13

3.18 Event Log

The event log displays up to 1000 controller faults and notices, starting with the most recent event. Events are numbered 1-1000, with 1 being the most recent. Each event is displayed with the date and time of the event, the number of the event, a code to indicate whether the event was a warning (W), shutdown (S), or informational notice (I), the engine hours at the time of the event, and the event description. See Figure 3-27.

3.18.1 Procedure to View Event History

1. Press Select to enter the main menu.

2. Press the down arrow to step down to the event log.

3. Press Select to display the most recent event.

4. Press the down arrow to step to the next event.

5. Use the up and down arrow buttons to view events.

6. Press the Select button to exit the event log.

To stop viewing the event history before the last event, press the select button to return to the main menu.

Figure 3-27

Date MO/DA/YEAR

Event Log ---->

Press UP and Down arrow buttons to scroll through events

Press Select button at any time to return to the main menu.

time HR:MN

event number, W/S/I, engine hours

event name

Date MO/DA/YEAR

time HR:MN

event number, W/S/I, engine hours

event name

tp6810

Figure 3-27 Event Log

TP-6843 1/13 Section 3 VSC Controller Operation 43

Notes

44 Section 3 VSC Controller Operation TP-6843 1/13

Section 4 Scheduled Maintenance

WARNING

Accidental starting. Can cause severe injury or death.

Disabling the generator set. Accidental starting can cause severe injury or death. Before working on the

generator set or equipment connected to the set, disable the generator set as follows: (1) Press the generator set OFF/RESET button to shut down the generator set. (2) Disconnect the power to the battery charger, if equipped. (3) Remove the battery cables, negative (–) lead first. Reconnect the negative (–) lead last when reconnecting the battery. Follow these precautions to prevent the starting of the generator set by the remote start/stop switch.

Hazardous voltage. Moving parts. Can cause severe injury or death.

Hot engine and exhaust system. Can cause severe injury or death.

Do not work on the generator set until it cools.

Servicing the exhaust system. Hot parts can cause severe injury or death. Do not touch hot engine parts. The

engine and exhaust system components become extremely hot during operation.

4.1 Scheduled Maintenance

Refer to the following service schedules and the runtime hours displayed on the controller display to schedule routine maintenance. Intervals are shown in hours of operation and/or time intervals (i.e. weekly, monthly, quarterly, etc.) Have an authorized distributor/dealer service the generator set at the designated intervals in the service schedule for the life of the generator set. Service units subject to extreme weather, long operating hours, or dusty or dirty conditions more frequently.

Contact an authorized distributor/dealer for parts.

Operate the generator set only when all guards and electrical enclosures are in place.

TP-6843 1/13 Section 4 Scheduled Maintenance 45

4.1.1 Service Schedule, 6VSG Models

Procedure

System Component or Procedure

Fuel

Flexible lines and connections X R Quarterly

Main tank supply level (if LPG fueled) X Weekly

Fuel piping X Yearly

Lubrication 4.2

Oil level X X 8 hours or before use

Crankcase breather hose X Yearly or 500 hours

Change oil X Yearly or 100 hours ‡

Replace filter X Yearly or 200 hours

Cooling 4.5

Air ducts, louvers X X Yearly

Exhaust Line 4.6

Leakage X X Weekly

Insulation, fire hazards X Yearly

Obstructions or combustible materials near exhaust outlet

DC Electrical System 4.7

Battery charger operation, charge rate (if equipped) X Monthly

Remove corrosion, clean and dry battery and rack X X Yearly

Clean and tighten battery terminals and inspect boots X X Yearly

Battery electrolyte level and specific gravity * X Yearly

AC Electrical System

Tighten control and power wiring connections X Yearly

Remote control system (if equipped) X Monthly

Visible wear or damage X Quarterly

Wire abrasions where subject to motion X X 6 months

Wire-cable insulation condition X 3 years or 500 hours

Engine and Mounting

Visible wear or damage X Weekly

Air cleaner and precleaner service † 4.4 R Yearly or 100 hours

Spark plugs 4.3 X Yearly or 300 hours

Replace stepper motor coupling and bushing D 500 hours

Generator

Visible wear or damage X Quarterly

Exercise generator set X Weekly

Brushes and collector ring D D Yearly

Measure and record resistance readings of windings with insulation tester (Megger rectifier and load leads disconnected) *

General Condition of Equipment

Evidence of vibration, leakage, excessive noise, temperature, or deterioration

Interior of sound enclosure X X Quarterly

* Not necessary for maintenance-free batteries. X Action

† Service more frequently under extremely dusty/dirty conditions. D Authorized distributor/dealer only

‡ Yearly or 250 hours if equipped with optional Oil Makeup Kit. R Replace as necessary

Megger® is a registered trademark of Biddle Instruments.

, with SCR assembly or

See

Section

Visually

Inspect Check Change Clean Test

X Weekly

D 3 years

X X X Weekly

Frequency

46 Section 4 Scheduled Maintenance TP-6843 1/13

4.2 Lubrication System

KPS_026

4.2.3 Engine Oil Recommendation

See the service schedules in Section 4.1 for oil change and oil filter replacement intervals. See the service views in Section 1.7 for the oil drain, oil dipstick, oil fill, and oil filter locations.

4.2.1 Low Oil Pressure Shutdown

The low oil pressure (LOP) shutdown feature protects the engine against internal damage if the oil pressure drops below a minimum pressure because of oil pump failure or other malfunction.

Note: The LOP shutdown feature does not protect

against damage caused by operating when the oil level is low; it is not a low oil level shutdown. Check the oil level regularly, and add oil as needed.

4.2.2 Oil Check

The generator set is shipped with oil. Before operating the generator set, check the engine oil in the crankcase. See Figure 4-1.

Maintain the oil level at or near, not over, the full mark on the dipstick. Add 5W-30 synthetic oil when the oil level is low.

Use 5W-30 API (American Petroleum Institute) Service Class SG, SH, or SJ synthetic oil. Synthetic oil oxidizes and thickens less than other oils and leaves the engine intake valves and pistons cleaner.

4.2.4 Oil Change Procedure

Note: Dispose of all waste materials (engine oil, fuel,

filter, etc.) in an environmentally safe manner.

Drain the oil while it is still warm.

1. Drain the oil.

a. Press the OFF button on the generator set

controller.

b. Disconnect the AC power to the generator set.

c. Disconnect the generator set engine starting

battery, negative (–) lead first.

d. Open the housing service door and remove

roof panel.

e. Clean the area around the dipstick and oil fill

cap.

f. Remove the screw in plug on drain fitting in

skid rail.

Check the oil level before each use. For extended operation, check the oil level every 8 hours. Do not check the oil level when the generator set is running. Shut down the generator set and wait several minutes before checking the oil.

Figure 4-1

Figure 4-1 Oil Check (typical)

g. Open the oil drain valve on the engine.

h. Remove the dipstick and oil fill cap. Allow time

for the engine oil to drain completely.

i. Close the oil drain valve. Replace the cap in

skid rail.

j. Replace the dipstick.

2. Replace the oil filter.

a. Clean the area around the oil filter. Remove

the oil filter by rotating it counterclockwise with an oil filter wrench.

b. Clean the gasket sealing surface of the oil filter

adapter.

c. Apply a light coat of clean oil to the rubber seal

of the new oil filter.

d. Install the new oil filter following the

instructions provided with the filter.

TP-6843 1/13 Section 4 Scheduled Maintenance 47

3. Fill with oil.

KPS_027

KPS_028

4.3 Spark Plugs

a. Fill the engine to the F mark on the dipstick.

The engine oil capacity is shown in Figure 4-2. See Section 4.2.3 Engine Oil Recommendation, for oil selection.

Figure 4-2

Generator Set Model Oil Capacity, L (qt.)

6VSG 1.9 (2.0)

Figure 4-2 Engine Oil Capacity

b. Reinstall the dipstick and the oil fill cap.

c. Reconnect the generator set engine starting

battery, negative (–) lead last.

d. Reconnect the AC power to the generator set.

e. Press the RUN button on the generator set

controller. The generator set will start.

f. Run the generator set for a minute to allow the

oil pressure to reach operating range.

g. Stop the generator set, wait 1 minute, and then

recheck the oil level. Add oil to bring the level up to the F mark on the dipstick.

4. Check for leaks.

Reset the spark plug gap or replace the plugs with new plugs as necessary.

1. Clean the area around the base of the spark plug to keep dirt and debris out of the engine.

2. Remove the spark plug and check its condition. Replace the spark plug if it is worn or if its reuse is questionable.

3. Check the spark plug gap using a wire feeler gauge. See Figure 4-3 for the recommended spark plug gap. Adjust the gap by carefully bending the ground electrode. See Figure 4-4 and Figure 4-5.

4. Reinstall the spark plug into the cylinder head. Torque the spark plug to 24.4-29.8 Nm (18-22 ft. lb.)

Figure 4-3

Generator Set Model Spark Plug Gap

6VSG 0.76 mm (0.030 in.)

Figure 4-3 Spark Plug Gap

Figure 4-4

a. Check for oil leaks.

b. Fix leaks and recheck the oil level.

c. Reinstall the roof panel and close service

door.

5. Reset the maintenance timer on the controller.

4.2.5 Resetting the Maintenance Timer

1. In the Overview menu, step down to the Next Maintenance screen.

2. Press the Select button.

3. Press the Up arrow button so that Reset Maint Timer? Yes is displayed.

4. Press the Select button. After about two minutes, the new maintenance interval and date are displayed.

Figure 4-4 Checking the Spark Plug Gap

Figure 4-5

Figure 4-5 Adjusting the Spark Plug Gap

48 Section 4 Scheduled Maintenance TP-6843 1/13

4.4 Air Cleaner Service

KPS_029

1. Cover knob

2. Air cleaner cover

3. Element cover nut

4. Element cover

5. Foam precleaner

6. Air cleaner element

7. Air cleaner base

Precleaner Service

The engine has a replaceable high-density paper air cleaner element with an oiled foam precleaner. See Figure 4-6.

Figure 4-6

Use the following procedure to wash and oil the precleaner as indicated in the service schedule. Wash and oil the precleaner more often under extremely dusty or dirty conditions.

1. Press the OFF button on the generator set controller.

2. Disconnect the AC power to the generator set.

3. Disconnect the engine starting battery, negative (–) lead first.

4. Loosen the cover knob and remove the air cleaner cover. Remove the precleaner from the paper element. Wash the precleaner in warm water with detergent. Rinse the precleaner thoroughly until all traces of detergent are eliminated. Squeeze out excess water (do not wring). Allow the precleaner to air dry.

5. Saturate the precleaner with new engine oil. Squeeze out all of the excess oil.

6. Reinstall the precleaner over the paper element.

7. Reinstall the air cleaner cover. Secure the cover with the cover knob.

8. Reconnect the power to the battery charger.

9. Reconnect the generator set engine starting battery, negative (–) lead last.

Paper Element Service

Use the following procedure to replace the paper

Figure 4-6 Air Cleaner Components

Check for a buildup of dirt and debris around the air cleaner system. Keep this area clean. Also check for loose or damaged components. Replace all bent or damaged air cleaner components.

Note: Operating the engine with loose or damaged air

element at the intervals specified in the service schedule. Replace the paper element more often under extremely dusty or dirty conditions.

1. Press the OFF button on the generator set controller.

2. Disconnect the AC power to the generator set.

cleaner components could allow unfiltered air into the engine causing premature wear and failure.

3. Disconnect the generator set engine starting battery, negative (–) lead first.

4. Loosen the cover knob and remove the cover.

5. Remove the element cover nut, element cover, and the paper element with precleaner.

6. Remove the precleaner from the paper element.

TP-6843 1/13 Section 4 Scheduled Maintenance 49

Note: Do not wash the paper element or clean it

with pressurized air, as this will damage the element.

7. Replace the element if it is dirty, bent, or damaged.

8. Check the air cleaner base. Make sure it is secure and not bent or damaged. Also check the element cover for damage and fit. Replace all damaged air cleaner components. Remove any loose dirt or debris from the air cleaner base. Wipe the base carefully so that no dirt drops into the intake throat. Check the condition of the rubber seal on the air cleaner stud and replace the seal if necessary.

4.7 Engine Starting Battery

WARNING

9. Reinstall the paper element, precleaner, element cover, element cover nut, and the air cleaner cover. Secure the cover with the cover knob.

10. Reconnect the AC power to the generator set.

11. Reconnect the generator set engine starting battery, negative (–) lead last.

4.5 Cooling System

The engine fan draws cooling air through the openings in the sides. The alternator fan draws cooling air through an opening on the side wall of the enclosure. The cooling air mixes with the engine exhaust and is discharged at the exhaust outlet. See the service view in Section 1.7 for air intake and exhaust locations. To prevent generator set damage caused by overheating, keep the housing cooling inlets and outlets clean and unobstructed at all times.

Note: Do not block the generator set cooling air inlets

or mount other equipment above them. Overheating and severe generator damage may occur.

4.6 Exhaust System

Remove all combustible materials from the exhaust location. Combustible materials include building materials as well as natural surroundings. Keep dry field grass, foliage, and combustible landscaping material a minimum of 1.5 m (5 ft.) from the exhaust outlet.

Periodically inspect the exhaust system components for cracks, leaks, and corrosion.

• Check for corroded or broken metal parts and replace them as needed.

• Check that the exhaust outlet is clear.

Sulfuric acid in batteries. Can cause severe injury or death.

Wear protective goggles and clothing. Battery acid may cause blindness and burn skin.

Battery electrolyte is a diluted sulfuric acid. Battery acid can cause severe injury or death. Battery acid can cause

blindness and burn skin. Always wear splashproof safety goggles, rubber gloves, and boots when servicing the battery. Do not open a sealed battery or mutilate the battery case. If battery acid splashes in the eyes or on the skin, immediately flush the affected area for 15 minutes with large quantities of clean water. Seek immediate medical aid in the case of eye contact. Never add acid to a battery after placing the battery in service, as this may result in hazardous spattering of battery acid.

Battery acid cleanup. Battery acid can cause severe injury or death. Battery acid is electrically conductive and

corrosive. Add 500 g (1 lb.) of bicarbonate of soda (baking soda) to a container with 4 L (1 gal.) of water and mix the neutralizing solution. Pour the neutralizing solution on the spilled battery acid and continue to add the neutralizing solution to the spilled battery acid until all evidence of a chemical reaction (foaming) has ceased. Flush the resulting liquid with water and dry the area.

Battery gases. Explosion can cause severe injury or death. Battery gases can cause an explosion. Do not

smoke or permit flames or sparks to occur near a battery at any time, particularly when it is charging. Do not dispose of a battery in a fire. To prevent burns and sparks that could cause an explosion, avoid touching the battery terminals with tools or other metal objects. Remove all jewelry before servicing the equipment. Discharge static electricity from your body before touching batteries by first touching a grounded metal surface away from the battery. To avoid sparks, do not disturb the battery charger connections while the battery is charging. Always turn the battery charger off before disconnecting the battery connections. Ventilate the compartments containing batteries to prevent accumulation of explosive gases.

Battery short circuits. Explosion can cause severe injury or death. Short circuits can cause bodily injury and/or

equipment damage. Disconnect the battery before generator set installation or maintenance. Remove all jewelry before servicing the equipment. Use tools with insulated handles. Remove the negative (–) lead first when disconnecting the battery. Reconnect the negative (–) lead last when reconnecting the battery. Never connect the negative (–) battery cable to the positive (+) connection terminal of the starter solenoid. Do not test the battery condition by shorting the terminals together.

50 Section 4 Scheduled Maintenance TP-6843 1/13

Refer to this section for general battery information

KPS_030

1. To positive (+) terminal on starter solenoid

2. To ground (–) terminal on or near starter motor

and maintenance. Also consult the battery manufacturer’s instructions for battery maintenance.

All generator set models use a negative ground with a 12-volt engine electrical system. Consult the generator set nameplate for the engine electrical system voltage. Consult the generator spec sheet for battery capacity recommendations for replacement purposes. Wiring diagrams provide battery connection information. See Figure 4-7 for typical battery connections.

Figure 4-7

4.8 Storage Procedure

Perform the following storage procedure before removing the generator set from service for three months or longer. Follow the engine manufacturer’s recommendations for storage, if available.

Note: Run the generator set monthly whenever

possible.

4.8.1 Lubricating System

1. Operate the generator set until it reaches operating temperature, or about 15 minutes.

2. Stop the generator set.

3. While the engine is still warm, drain the engine lubrication oil from the engine crankcase.

4. Refill engine crankcase with oil. See Section

4.2.3 for oil recommendations.

5. Run the generator set for a few minutes to distribute the clean oil.

6. Stop the generator set.

Figure 4-7 12-Volt Engine Electrical System Single

Starter Motor, Typical Battery Connection

Clean the battery and cables and tighten battery terminals using the service schedule recommendations. To prevent corrosion, maintain tight, dry electrical connections at the battery terminals. To remove corrosion from battery terminals, disconnect the cables from the battery and scrub the terminals with a wire brush. Clean the battery and cables with a solution of baking soda and water. After cleaning, flush the battery and cables with clean water and wipe them with a dry, lint-free cloth.

After reconnecting the battery cables, coat the battery terminals with petroleum jelly, silicone grease, or other nonconductive grease.

4.8.2 Fuel System

1. Start the generator set.

2. With the generator set running, shut off the gas supply.

3. Run the generator set until the engine stops.

4. Press the OFF button on the generator set controller.

4.8.3 Cylinder Lubrication

1. Remove the spark plugs.

2. Pour one tablespoon of engine oil into each spark plug hole. Install the spark plugs and ground the spark plug leads. Do not connect the leads to the plugs.

3. Crank the engine two or three revolutions to lubricate the cylinders.

4.8.4 Exterior Preparation

1. Clean the exterior surface of the generator set.

TP-6843 1/13 Section 4 Scheduled Maintenance 51

2. Seal all openings in the engine with nonabsorbent adhesive tape.

3. Mask all areas to be used for electrical contact.

4. Spread a light film of oil over unpainted metallic surfaces to prevent rust and corrosion.

4.8.5 Battery

Perform battery storage last.

1. Press the OFF button on the generator set controller.

2. Disconnect the battery, negative (–) lead first.

3. Clean the battery.

4. Place the battery in a warm, dry location.

5. Connect the battery to a float/equalize battery charger, or charge the battery monthly using a trickle charger. Follow the battery charger manufacturer’s recommendations.

52 Section 4 Scheduled Maintenance TP-6843 1/13

Section 5 Troubleshooting

KPS_031A GM77569

1 2

1. USB port (mini-B)

2. Not used

5.1 Introduction

Use the troubleshooting charts in this section to diagnose and correct common problems. First check for simple causes such as a dead engine starting battery, loose connections, or an open circuit breaker. The charts include a list of common problems, possible causes of the problem, and recommended corrective actions.

If the procedures in this manual do not explain how to correct the problem, contact an authorized Kohler distributor/dealer. Maintain a record of repairs and adjustments performed on the equipment. Use the record to help describe the problem and repairs or adjustments made to equipment.

5.2 Fault Messages

The VSC controller displays fault messages to aid in troubleshooting. Selected fault messages and recommended checks are listed in Figure 2-5.

Identify and correct the cause of the fault condition. Then reset the controller after a fault shutdown. See Section 2.6.3.

5.3.2 Line Circuit Breaker

The line circuit breaker interrupts the generator output in the event of a fault in the wiring between the generator and the load. If the circuit breaker trips, reduce the load and switch the breaker back to the ON position.

5.4 Controller Service Access

A USB port is located in the service access area. See Figure 5-1. Some controller settings can be adjusted using a laptop computer with Kohler SiteTech software. Use a USB cable with a mini-B connector to connect the controller to your PC. See TP-6701, SiteTech Software Operation Manual, for more information.

Figure 5-1

5.3 Circuit Protection

If the generator set circuit breaker trips repeatedly, contact an authorized Kohler distributor/dealer for service.

5.3.1 Controller Internal Circuit Protection

The controller is equipped with internal circuit protection. A fault message, Accy PwrOver Warning or MainPwrOverL Shutdown, is displayed if this internal protection is activated. Press OFF to reset. Contact an authorized Kohler distributor/dealer for service.

Figure 5-1 Controller Service Access (cover

removed)

TP-6843 1/13 Section 5 Troubleshooting 53

5.5 Troubleshooting

Figure 5-2 contains generator set troubleshooting, diagnostic, and repair information. Check for loose connections before replacing parts.

Figure5-2

Problem Possible Cause Recommended Action

Controller display back light is off.

Controller display is off.

The generator set does not crank.

The generator set cranks but does not start, starts hard, lacks power, or operates erratically.

No DC output. Line circuit breaker in the OFF position. Place the circuit breaker in the ON position.

Low output or excessive drop in voltage.

Generator set stops suddenly.

Figure 5-2 General Troubleshooting Chart

Backlight turns off after about 1 minute with no activity.

Backlight will turn on when a button is pressed or the generator set starts.

Low or no battery voltage. Check connections.

Check generator set battery. See Figure 1-2.

Battery weak or dead. Recharge or replace the battery.

Battery connections reversed or poor. Check the connections.

Fault shutdown. Check the controller display for fault messages. See

Section 2.6. Correct the fault condition and reset the controller.

Generator set in the OFF mode. Press the RUN button to start the engine or press AUTO

to allow remote starting.

Air cleaner clogged. Clean and/or replace the air cleaner.

Battery weak or dead. Recharge or replace the battery.

Battery connection poor. Clean and tighten the battery connections.

Spark plug wire connection loose. Check the spark plug wires.

Low oil pressure shutdown. Check for oil leaks. Check the oil level and add oil if

necessary.

Fuel pressure insufficient. Check the fuel supply and valves.

Engine malfunction. Contact an authorized Kohler distributor/dealer.

Line circuit breaker tripping because of overload. Reduce the load on the generator set.

Line circuit breaker tripping because of short circuit.

Contact an authorized Kohler distributor/dealer for service.

Rectifier has failed. Verify that the generator is providing AC voltage.

Generator set overloaded. Reduce the load.

Low oil pressure shutdown. Check for oil leaks. Check the oil level and add oil if

necessary.

Out of fuel. Check fuel supply.

Overcrank shutdown. Reset the controller. If the overcrank fault occurs again,

contact an authorized Kohler distributor/dealer.

Auxiliary winding circuit breaker tripped. Reset the circuit breaker (located in controller’s service

access area). Contact an authorized Kohler distributor/dealer for service if breaker trips repeatedly.

Fault shutdown. Check the controller display for fault messages. See

Section 2.6. Correct the fault condition and reset the controller.

Generator set in the OFF mode. Press the RUN button to start the engine or press AUTO

to allow remote starting.

Remote stop command received from a remote

switch, or OnCue

Check the remote switch position. Check OnCue

Engine malfunction. Contact an authorized Kohler distributor/dealer.

54 Section 5 Troubleshooting TP-6843 1/13

Appendix A Abbreviations

The following list contains abbreviations that may appear in this publication.

A, amp ampere ABDC after bottom dead center AC alternating current A/D analog to digital ADC advanced digital control;

analog to digital converter

adj. adjust, adjustment ADV advertising dimensional drawing Ah amp-hour AHWT anticipatory high water

temperature

AISI American Iron and Steel Institute ALOP anticipatory low oil pressure alt. alternator Al aluminum ANSI American National Standards

Institute (formerly American Standards Association, ASA)

AO anticipatory only APDC Air Pollution Control District API American Petroleum Institute approx. approximate, approximately APU Auxiliary Power Unit AQMD Air Quality Management District AR as required, as requested AS as supplied, as stated, as

suggested

ASE American Society of Engineers ASME American Society of Mechanical

Engineers

assy. assembly ASTM American Society for Testing

Materials

ATDC after top dead center ATS automatic transfer switch auto. automatic aux. auxiliary avg. average AVR automatic voltage regulator AWG American Wire Gauge AWM appliance wiring material bat. battery BBDC before bottom dead center BC battery charger, battery charging BCA battery charging alternator BCI Battery Council International BDC before dead center BHP brake horsepower blk. black (paint color), block

(engine)

blk. htr. block heater BMEP brake mean effective pressure bps bits per second br. brass BTDC before top dead center Btu British thermal unit Btu/min. British thermal units per minute C Celsius, centigrade cal. calorie CAN controller area network CARB California Air Resources Board CAT5 Category 5 (network cable) CB circuit breaker CC crank cycle cc cubic centimeter CCA cold cranking amps ccw. counterclockwise CEC Canadian Electrical Code cert. certificate, certification, certified cfh cubic feet per hour cfm cubic feet per minute CG center of gravity

CID cubic inch displacement CL centerline cm centimeter CMOS complementary metal oxide

com communications (port) coml commercial Coml/Rec Commercial/Recreational conn. connection cont. continued CPVC chlorinated polyvinyl chloride crit. critical CSA Canadian Standards Association CT current transformer Cu copper cUL Canadian Underwriter’s

CUL Canadian Underwriter’s

cu. in. cubic inch cw. clockwise CWC city water-cooled cyl. cylinder D/A digital to analog DAC digital to analog converter dB decibel dB(A) decibel (A weighted) DC direct current DCR direct current resistance deg., ° degree dept. department dia. diameter DI/EO dual inlet/end outlet DIN Deutsches Institut fur Normung

DIP dual inline package DPDT double-pole, double-throw DPST double-pole, single-throw DS disconnect switch DVR digital voltage regulator

PROM, EEPROM

E, emer. emergency (power source) ECM electronic control module,

EDI electronic data interchange EFR emergency frequency relay e.g. for example (exempli gratia) EG electronic governor EGSA Electrical Generating Systems

EIA Electronic Industries Association EI/EO end inlet/end outlet EMI electromagnetic interference emiss. emission eng. engine EPA Environmental Protection

EPS emergency power system ER emergency relay ES engineering special, engineered

ESD electrostatic discharge est. estimated E-Stop emergency stop etc. et cetera (and so forth) exh. exhaust ext. external F Fahrenheit, female

substrate (semiconductor)

Laboratories

e. V. (also Deutsche Industrie Normenausschuss)

electrically-erasable programmable read-only memory

engine control module

Association

Agency

special

FHM flat head machine (screw) fl. oz. fluid ounce flex. flexible freq. frequency FS full scale ft. foot, feet ft. lb. foot pounds (torque) ft./min. feet per minute ftp file transfer protocol g gram ga. gauge (meters, wire size) gal. gallon gen. generator genset generator set GFI ground fault interrupter GND, ground gov. governor gph gallons per hour gpm gallons per minute gr. grade, gross GRD equipment ground gr. wt. gross weight H x W x D height by width by depth HC hex cap HCHT high cylinder head temperature HD heavy duty HET high exhaust temp., high engine

hex hexagon Hg mercury (element) HH hex head HHC hex head cap HP horsepower hr. hour HS heat shrink hsg. housing HVAC heating, ventilation, and air

HWT high water temperature Hz hertz (cycles per second) IBC International Building Code IC integrated circuit ID inside diameter, identification IEC International Electrotechnical

IEEE Institute of Electrical and

IMS mproved motor starting in. inch in. H in. Hg inches of mercury in. lb. inch pounds Inc. incorporated ind. industrial int. internal int./ext. internal/external I/O input/output IP internet protocol ISO International Organization for

J joule JIS Japanese Industry Standard k kilo (1000) K kelvin kA kiloampere KB kilobyte (2 KBus Kohler communication protocol kg kilogram kg/cm kgm kilogram-meter kg/m kHz kilohertz

temp.

conditioning

Commission

Electronics Engineers

O inches of water

Standardization

bytes)

kilograms per square centimeter

kilograms per cubic meter

TP-6843 1/13 Appendix 55

kJ kilojoule km kilometer kOhm, kΩ kilo-ohm kPa kilopascal kph kilometers per hour kV kilovolt kVA kilovolt ampere kVAR kilovolt ampere reactive kW kilowatt kWh kilowatt-hour kWm kilowatt mechanical kWth kilowatt-thermal L liter LAN local area network L x W x H length by width by height lb. pound, pounds

pounds mass per cubic feet

lbm/ft LCB line circuit breaker LCD liquid crystal display LED light emitting diode Lph liters per hour Lpm liters per minute LOP low oil pressure LP liquefied petroleum LPG liquefied petroleum gas LS left side

sound power level, A weighted

LWL low water level LWT low water temperature m meter, milli (1/1000) M mega (10

cubic meter

/hr. cubic meters per hour

/min. cubic meters per minute

units), male

when used with SI

mA milliampere man. manual max. maximum MB megabyte (2

bytes) MCCB molded-case circuit breaker MCM one thousand circular mils meggar megohmmeter MHz megahertz mi. mile mil one one-thousandth of an inch min. minimum, minute misc. miscellaneous MJ megajoule mJ millijoule mm millimeter mOhm, mΩ milliohm MOhm, MΩ megohm MOV metal oxide varistor MPa megapascal mpg miles per gallon mph miles per hour MS military standard ms millisecond m/sec. meters per second mtg. mounting MTU Motoren-und Turbinen-Union MW megawatt mW milliwatt μF microfarad N, norm. normal (power source) NA not available, not applicable nat. gas natural gas NBS National Bureau of Standards NC normally closed NEC National Electrical Code NEMA National Electrical

Manufacturers Association

NFPA National Fire Protection

Association Nm newton meter NO normally open no., nos. number, numbers NPS National Pipe, Straight

NPSC National Pipe, Straight-coupling NPT National Standard taper pipe

thread per general use NPTF National Pipe, Taper-Fine NR not required, normal relay ns nanosecond OC overcrank OD outside diameter OEM original equipment manufacturer OF overfrequency opt. option, optional OS oversize, overspeed OSHA Occupational Safety and Health

Administration OV overvoltage oz. ounce p., pp. page, pages PC personal computer PCB printed circuit board pF pic ofarad PF power factor ph., Ø phase PHC Phillips head Crimptite (screw) PHH Phillips hex head (screw) PHM pan head machine (screw) PLC programmable logic control PMG permanent magnet generator pot potentiometer, potential

SPST single-pole, single-throw spec specification specs specification(s) sq. square sq. cm square centimeter sq. in. square inch SMS short message service SS stainless steel std. standard stl. steel tach. tachometer TB terminal block TCP transmission control protocol TD time delay TDC top dead center TDEC time delay engine cooldown TDEN time delay emergency to normal TDES time delay engine start TDNE time delay normal to emergency TDOE time delay off to emergency TDON time delay off to normal temp. temperature term. terminal THD total harmonic distortion TIF telephone influence factor tol. tolerance turbo. turbocharger

typ. typical (same in multiple ppm parts per million PROM programmable read-only

memory psi pounds per square inch psig pounds per square inch gauge pt. pint PTC positive temperature coefficient PTO power takeoff PVC polyvinyl chloride

UF underfrequency UHF ultrahigh frequency UIF user interface UL Underwriter’s Laboratories, Inc. UNC unified coarse thread (was NC) UNF unified fine thread (was NF) univ. universal

URL uniform resource locator (web qt. quart, quarts qty. quantity R replacement (emergency) power

source rad. radiator, radius RAM random access memory RBUS RS-485 proprietary

communications RDO relay driver output ref. reference rem. remote Res/Coml Residential/Commercial RFI radio frequency interference RH round head RHM round head machine (screw) rly. relay rms root mean square

US undersize, underspeed UV ultraviolet, undervoltage V volt VAC volts alternating current VAR voltampere reactive VDC volts direct current VFD vacuum fluorescent display VGA video graphics adapter VHF very high frequency W watt WCR withstand and closing rating w/ with WO write only w/o without wt. weight

xfmr transformer rnd. round RO read only ROM read only memory rot. rotate, rotating rpm revolutions per minute RS right side RTDs Resistance Temperature

Detectors RTU remote terminal unit RTV room temperature vulcanization RW read/write SAE Society of Automotive Engineers scfm standard cubic feet per minute SCR silicon controlled rectifier s, sec. second SI Systeme international d’unites,

International System of Units SI/EO side in/end out sil. silencer SMTP simple mail transfer protocol SN serial number SNMP simple network management

protocol SPDT single-pole, double-throw

locations)

address)

56 Appendix TP-6843 1/13

Notes

TP-6843 1/13 Appendix 57

Notes

58 Appendix TP-6843 1/13

TP-6843 1/13a

KOHLER CO. Kohler, Wisconsin 53044 Phone 920-457-4441, Fax 920-459-1646

Kohler Power Systems Asia Pacific Headquarters 7 Jurong Pier Road Singapore 619159 Phone (65) 6264-6422, Fax (65) 6264-6455

For the nearest KOHLER authorized installation, service, and sales dealer in the US and Canada: Call 1-800-544-2444 or visit KOHLERPower.com

Kohler 48VDC, 36VDC, 24VDC, 6VSG User Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

Product Identification Information

Generator Set Identification Numbers

Controller Identification

Engine Identification

Table of Contents

Safety Precautions and Instructions

Accidental Starting

Battery

Engine Backfire/Flash Fire

Exhaust System

Fuel System

Hazardous Noise

Hazardous Voltage/Moving Parts

Hot Parts

Heavy Equipment

Introduction

List of Related Literature

Nameplate

Emission Information

Service Assistance

Section 1 Descriptions and Service Views

1.1 Introduction

1.2 Engine

1.4 Alternator

1.5 Controller

1.3 Generator Set Enclosure

1.5.1 VSC Controller Features

1.6 Accessories

1.6.1 Carburetor Heater

1.6.2 OnCue® Generator Management System

1.6.3 Programmable Interface Module (PIM)

1.6.4 Communications Kit

1.7 Service Views

Section 2 Generator Set Operation

2.1 Theory of Operation

2.2 Prestart Checklist

2.3 Exercising the Generator Set

2.4.3 Engine Start Crank Cycle

2.4.4 Engine Cooldown

2.4 Generator Set Operation

2.4.1 Local Starting and Stopping

2.4.2 Remote Starting and Stopping

2.4.5 Automatic Operation

2.6 Faults

2.5 Exercise

2.6.1 Warnings

2.6.2 Shutdowns

Section 3 VSC Controller Operation

3.1 VSC Generator Set Controller

3.2 Control and Indicators

3.2.1 Controller Keypad

3.2.2 LED Indicators

3.2.3 LCD Display

3.3 Controller Power

3.5.1 Procedure to Change Settings

3.4 Battery Charging

3.5 Changing Settings

3.6 Setting the Exerciser

3.6.1 Setting the Exerciser at Controller Power-up

3.6.2 Changing the Exercise Settings

Exerciser Reset

Procedure to Set the Exerciser

3.7 VSC Controller Menus

3.8 Main Menu

3.9 Overview Menu

3.10 Engine Metering Menu

3.11 Generator Metering Menu

3.11.1 Calibration

3.13 Genset Run Time Menu

Figure 3-13 Generator Set Information Menu

3.14 Genset System Menu

3.14.1 System Parameters for Battery Bank Charging

3.14.2 Setting the Exerciser

3.14.3 Adjusting the Display Contrast

3.15 Date and Time Menu

3.16 Networking Information Menus