DAF CF65, CF75, CF85 Series . Manual - part 551

10

1358030/26

EL001298

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1000

1008

1008

9001

9307

9307

9307

1010

1000

1000

1010

1000

A500

1/416

1/417

E286

125A

2

1

!

1

638

20

555

30

87

G015

B525

A5/

598

D929

1010

1000

1000

1010

B010

30

2

C694

BD

+

G

200404



2-44

5

ELECTRICAL SYSTEM

Electrical system

CF65/75/85 series ≥0E621376

10

200404



2-45

Electrical system

5

ELECTRICAL SYSTEM

CF65/75/85 series ≥0E621376

10

2

A

LT

ERNA

TO

R/IGNITION/ST

ARTER

SWITCH/CHARGING

C

IRCUIT

CONT

ACT

CIRCUIT

If

accessories/ignition/starter

switch

C

539

is

turned

(contact

1

is

connected

to

pin

6),

the

“radio

accessories

power

supply”

relay

(G377)

will

be

energised.

V

oltage

is

now

applied

to

contact

1

of

relay

G377

through

fuse

E037,

wire

1100,

contacts

1

-

6

of

switch

C

539,

wire

1130.

When

G377

is

energised,

a

connection

is

made

between

contacts

3

and

5

of

G

377

and

a

voltage

is

switched

from

the

converter

to

the

radio.

ST

ARTING

C

IRCUIT

If

the

ignition

switch

C539

is

turned

(contact

1

is

connected

to

4),

both

contact

relay

G015

and

G426

will

be

activated

via

wire

4001.

If

the

ignition

sw

itc

h

is

turned

to

the

“s

tart”

position,

a

contact

is

m

ade

in

this

switch

between

contacts

1

and

2.

The

power

is

now

supplied

from

the

batteries

through

fuse

E037,

the

connection

1

-

2

from

the

accessories/ignition/starter

switch

and

wire

4004

on

connection

point

A3

of

the

alarm

syst

em.

When

the

alarm

system

has

been

switched

of

f

using

the

remote

control,

or

by

activating

the

contact

(the

immobiliser

switches

the

alarm

of

f

via

C

AN),

wire

4004,

connection

point

A3,

is

connected

to

w

ire

4004,

connection

point

A1.

The

coil

of

relay

G203

will

be

activated.

This

closes

connection

30

-

87.

A

voltage

is

now

applied

to

connection

point

50

of

the

starter

motor

,through

fuse

E037,

wire

1100,

relay

contacts

30

-

87,

wire

4002,

causing

the

starter

m

otor

to

turn.

When

the

alarm

has

been

switched

of

fand

the

door

has

opened,

the

start

interrupter

will

be

deactivated

for

60

seconds.

If

the

engine

is

not

started

w

ithin

this

time,

the

start

interrupter

is

reactivated.

If

the

alarm

is

switched

of

fand

the

doors

are

not

opened,

the

start

interrupter

remains

deactivated

for

9

minutes.

If

the

vehicle

has

an

A

S

Tronic

g

earbox

If

the

vehicle

has

an

AS

Tr

onic

gearbox,

relay

G185

is

also

fitted.

When

the

contact

is

switched

on

and

the

gearbox

is

in

neutral,

relay

G

185

will

be

energised.

The

voltage

is

now

applied

to

the

coil

of

relay

G203

through

wire

4004,

contacts

30

-

87

of

relay

G

185,

wire

4186,

contacts

3

-

4,

wire

4009.

This

relay

is

energised.

A

voltage

is

now

applied

to

connection

point

50

of

the

starter

m

otor

,t

hrough

E037,

wire

1100,

contacts

30

-

87

and

wire

4002,

causing

the

starter

m

otor

to

turn.

As

soon

as

the

m

otor

turns,

the

V

IC

applies

a

voltage

to

connection

point

C42.

The

voltage

is

then

applied

to

connection

point

1

of

relay

G372

via

w

ire

3157.

This

relay

is

energised,

breaking

the

starting

circuit.

Note: When

the

immobiliser

applies

a

voltage

to

wire

4009,

the

cab

heater

is

also

switched

of

f

if

the

vehicle

m

ust

m

eet

requirements

for

the

transportation

of

hazardous

substances.

CHARGING

C

IRCUIT

If

the

contact

is

activated,

there

is

voltage

on

connection

point

85

of

relay

G

426.

This

relay

is

activated.

V

oltage

is

now

applied

to

connection

point

15

of

the

alternator

through

fuse

E037,

contacts

30

-

87

of

relay

G426,

fuse

E350

and

wire

1380.

An

internal

resistor

in

the

alternator

is

energised

by

an

IC

in

the

carbon

brush

holder

.

This

resistor

ensures

that

a

low

level

of

current

passes

through

the

energising

resistor

.T

his

excites

a

magnetic

field

in

the

alternator

.

After

starting,

the

voltage

on

terminals

B

+

and

15

will

rise

to

about

28.5

V.

O

nce

this

voltage

is

reached,

the

IC

in

the

regulator

interrupts

the

pre-exciter

coil

to

enable

the

voltage

to

be

regulated.

The

m

agnetic

field

w

ill

now

disappear

,s

o

that

the

generator

will

not

be

energised

for

a

short

period

of

time.

As

a

result,

the

voltage

on

outputs

B

+

and

15

will

drop.

200404



2-46

5

ELECTRICAL SYSTEM

Electrical system

CF65/75/85 series ≥0E621376

10

The

regulator

reactivates

w

hen

the

voltage

drops

below

27.6V

.T

his

m

eans

that

the

voltage

supplied

by

the

generator

remains

relatively

constant.

T

he

batteries

are

supplied

through

the

B

+

generator

output.

The

alternator

charging

current

warning

lamp

is

activated

via

wire

1020,

which

is

connected

to

the

V

IC

(D900).

T

he

VIC

controls

the

D

IP

via

the

CAN

network.

T

he

voltage

on

wire

1020

is

switched

by

the

control

IC.

The

alternator

is

also

equipped

with

a

‘sens’

line.

This

connection

continuously

measures

the

voltage

on

connection

point

30

of

the

starter

motor

.If

the

voltage

on

connection

point

30

drops,

the

voltage

is

immediately

corrected

by

the

control

IC.

The

alternator

will

increase

the

voltage

until

a

value

of

28.5V

is

reached

again.

VARIANTS

Location 44/46

If

NO

alarm

syst

em

is

fit

ted,

wires

4004

and

4004A

are

connected

through

in

connector

574.

51

Only

for

A

S

Tronic.

200404



2-47

Electrical system

5

ELECTRICAL SYSTEM

CF65/75/85 series ≥0E621376