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Welcome to the KenworthElectr ical / Electronics Systems Training

Ray Brown (425-828-5315)

Cliff Williams (425) 828-5329

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Welcome to Kenworth

Electr ical / Electroni cs 1. Review voltage, resistance, and amperage

2. Kenworth power distribution and adding circuits

3. Kenworth wiring systems and using diagrams4. Basic diagnostics procedures5. Charge / Start Systems

6. Data Bus Testing7. Multi-plexing

8. Instrumentation & NBI9. Course review & exam

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Basic Electr ici ty

What is electricity?

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COPPER ATOM

ONLY ONE ELECTRON INOUTER VALANCE RING

Conductor - has 3 or lesselectrons in outer valance ring

Insulator - has more than 4electrons in outer valance ring

Semi-Conductor - has exactly 4

electrons in outer valance ring.

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Basic Electr ici ty Electricity is the flow of electronsfrom atom to atom in a conductor

Source

Load

Ground

Copper wire

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Basic Electr ici ty Unlike charges attract, causing a chain reaction of

electron movement By example, using a battery as a source with an

abundance of electrons as our source, the electronsflow to the load.

Source

Load

Ground Side

Copper wire

Close Switch

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Basic Electr ici ty

3 Basic Parts of Electricity

CurrentVoltage

Resistance

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Basic Electr ici ty

CURRENT The flow of electrons

through a conductor Current is measured

in amps with anammeter

1 amp = 6.28 billion

billion electrons persecond.

current is constant

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Basic Electr ici ty Current remains constant in a completecircuit, and can be measured anywhere inthe circuit

Source

Load

Ground

Copper wire

Close Switch

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Basic Electr ici ty

Voltage Electrical Pressure or

force that moves theelectrons

Voltage is lost or usedup, total volt drop isequal to applied volts.

Voltage is generated bybattery / alternator

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Basic Electr ici ty Voltage is present up to a open,like this switch, but withoutcurrent or electron flow

Load

Copper wire

Ground Side Open Switch

SourceVoltage

12.8 Volts

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Basic Electr ici ty

When the switch is closed the voltage isused by the load, and not present afterthe load in a good working circuit

Copper wire

Switch Closed

12.8 Volts

0 Volts

SourceVoltage

Load

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Basic Electr ici ty

Resistance A restriction to flow Causes voltage to be

used up. measured in Ohms

with an ohmmeter

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Basic Electr ici ty

Unwanted Resistance Caused By: dirt and corrosion loose or poor connections heat

too small a wire too long a wire

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Basic Electr ici ty

Relationship of Current, Voltage, and Resistance Increased Resistance = increased voltage loss. Increased voltage loss (volt drop) = decreased

current flow

Resistance

Current Flow

Constant Voltage

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Basic Electrical Principles For current to flow there must be a good,

complete circuit with the least amount ofunwanted resistance as possible. Wherever current originates it must return

to the original source. There will always be voltage up to the point

of an open in a circuit.

Voltage is divided up by total resistance inthe circuit (both wanted and unwanted)

All voltage should be used up after the load

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Basic Electr ici ty TYPICAL RELAY CIRCUIT

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Basic Electr ici ty TYPICAL RELAY CIRCUIT

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Basic Electr ici ty

30

8685

87

87A

REL AY BL OCK

30- POWER

85 AND 86 - CONTROLCIRCUIT

87A - NORMALLYCLOSED

87 - NORMALLY OPEN

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COURSE OUTL I NE

1. Introduction

2. Basic Electrical Review

3. Instructional Boards (Hands on)4. Kenworth Power Distribution (B-Cab, T2000, T300)

5. Adding Circuits6. Wiring Schematics

7. Basic Diagnostics8. Instrumentation (B-Cab) (Day 2)

9. Introduction to Multi-plexing

10. Charge / Start Systems11. T2000 Instrumentation (Day 3)

12. Introduction to Freedom Line Transmission13. E Version ABS with PLC

14. Certification Test