DAF CF65, CF75, CF85 Series . Manual - part 574

10

32

PT

O

‘REQUEST’

P

TO

1

(=

S

WITCH

O

N)

When

the

P

TO

operation

switch

(C750)

is

operated,

a

voltage

is

applied

to

connection

point

D27

of

D

900

(VIC)

through

fuse

E091,

wire

1240,

contacts

5

-

1

of

switch

C

750

and

wire

4594.

The

P

TO

can

also

be

switched

on

through

connection

point

11

of

A068

(engine

speed

control

application

connector).

This

means

that

a

‘request’

to

use

the

PT

O

has

been

made.

This

‘request’

is

implemented

depending

on

the

conditions

programmed

in

the

VIC.

A

condition

might

be

that

the

parking

brake

m

ust

be

engaged.

In

this

case,

a

voltage

is

applied

to

connection

point

1

of

parking

brake

switch

F000

through

fuse

E035,

wire

121

1.

If

parking

brake

switch

F

000

is

closed

(connection

between

contacts

1

and

2),

this

voltage

is

also

on

connection

point

B22

of

D

814

(UPEC

electronic

unit)

through

wire

3402

and

on

connection

point

D26

of

D

900

(VIC).

OPERA

T

ION

When

the

‘PT

O

request’

is

implemented,

the

following

takes

place:

A

voltage

is

applied

from

connection

point

B23

of

D

900

through

wire

4596

to

connection

point

1

of

B

245,

thereby

switching

on

the

P

TO

.

The

V

IC

checks

whether

the

P

TO

is

actually

switched

on.

This

takes

place

as

follows:

When

the

P

TO

has

been

switched

on,

F087

is

operated

mechanically

.C

ontacts

1

-

2

of

F

087

close.

Connection

point

B14

of

the

VIC

is

now

connected

to

earth.

T

he

VIC

then

sends

a

mes

sage

to

the

D

IP

and

the

“PT

O

ac

tiv

e”

warning

is

activated.

If

the

P

TO

does

NOT

switch

on,

F087

is

NOT

operated

and

connection

point

B14

of

the

VIC

is

NOT

connected

to

earth.

A

fter

a

period

of

time

programmed

in

the

VIC,

a

‘message’

is

sent

to

the

D

IP

and

the

“PT

O

fault”

warning

symbol

is

activated.

‘CANCEL

’PT

O

1

(=

SWITCH

OFF)

Breaking

contacts

5

-

1

of

C

750

switches

the

PT

O

of

f.

T

his

interrupts

the

voltage

from

connection

point

D27

to

D

900

(VIC).

One

of

the

switch-on

conditions

for

operation

of

the

PT

O

is

now

absent.

T

he

VIC

responds

to

this

by

also

removing

the

voltage

from

connection

point

B23,

causing

the

voltage

at

connection

point

1

of

B

245

to

be

lost.

T

he

valve

is

no

longer

energised

and

the

P

TO

is

switched

of

f.

‘REQUEST’

P

TO

2

(=

S

WITCH

O

N)

When

the

P

TO

operation

switch

(C751)

is

operated,

a

voltage

is

applied

to

connection

point

D22

of

D

900

(VIC)

through

fuse

E091,

wire

1240,

contacts

5

-

1

of

switch

C

750

and

wire

5241.

This

means

that

a

‘request’

to

use

the

P

TO

has

been

made.

This

‘request’

is

implemented

depending

on

the

conditions

programmed

in

the

VIC.

A

condition

might

be

that

the

parking

brake

m

ust

be

engaged.

In

this

case,

a

voltage

is

applied

to

connection

point

1

of

parking

brake

switch

F000

through

fuse

E035,

wire

121

1.

If

parking

brake

switch

F

000

is

closed

(connection

between

contacts

1

and

2),

this

voltage

is

also

on

connection

point

B22

of

D

814

(UPEC

electronic

unit)

through

wire

3402

and

on

connection

point

D26

of

D

900

(VIC).

200404



2-136

5

ELECTRICAL SYSTEM

Electrical system

CF65/75/85 series ≥0E621376

10

OPERA

T

ION

When

the

‘PT

O

request’

is

implemented,

the

following

takes

place:

A

voltage

is

applied

from

connection

point

C46

of

D

900

to

connection

point

1

of

E

570

(clutch

-

PT

O

N

10

proximity

switch)

(if

present)

and

to

connection

point

3

of

relay

G259

(PT

O

operation

takeover

relay)

(if

present)

through

wire

4595.

When

switch

E570

is

operated

by

depressing

the

clutch

pedal

(connection

between

contacts

1

and

2),

a

voltage

is

applied

to

connection

point

1

of

relay

G

259

through

wire

4595

and

to

connection

point

1

of

B

245

(PT

O

control

valve).

R

elay

G259

is

energised

and,

as

a

result,

a

connection

is

made

between

contacts

3

and

5

of

relay

G259.

Relay

G

259

now

remains

energised

irrespective

of

E570

(this

is

a

‘memory’

function).

B

246

is

also

activated

and

this

switches

the

P

TO

on.

The

V

IC

checks

whether

the

P

TO

is

actually

switched

on.

This

takes

place

as

follows:

When

the

P

TO

has

been

switched

on,

F088

is

operated

mechanically

.C

ontacts

1

-

2

of

F

088

close.

Connection

point

B1

1

of

the

VIC

is

now

connected

to

earth.

T

he

VIC

then

sends

a

mes

sage

to

the

D

IP

and

the

“PT

O

ac

tiv

e”

warning

is

activated.

If

the

P

TO

does

NOT

switch

on,

F088

is

NOT

operated

and

connection

point

B1

1

of

the

VIC

is

NOT

connected

to

earth.

A

fter

a

period

of

time

programmed

in

the

VIC,

a

‘message’

is

sent

to

the

D

IP

and

the

“PT

O

fault”

warning

symbol

is

activated.

‘CANCEL

’PT

O

2

(=

SWITCH

OFF)

Breaking

contacts

5

-

1

of

C

751

switches

the

PT

O

of

f.

T

his

interrupts

the

voltage

from

connection

point

D22

to

D

900

(VIC).

One

of

the

switch-on

conditions

for

operation

of

the

PT

O

is

now

absent.

T

he

VIC

responds

to

this

by

removing

the

voltage

on

connection

point

C46

as

w

ell.

The

voltage

on

relay

G

259

is

interrupted

and,

as

a

result,

the

coil

is

no

longer

energised.

Contacts

5

-

3

open

and,

as

a

result,

the

voltage

on

connection

point

1

of

B246

is

lost.

T

he

valve

is

no

longer

energised

and

the

P

TO

is

switched

of

f.

VARIANTS

Location 9

C

onnector

A

068:

optional.

35

DVB:

in

wiring

harness

above

P

CB

if

there

is

NO

clut

ch

P

TO

N

10

proximity

switch.

21,

24,

25,

31,

41:

Connector

626:

for

m

anual

gearbox.

Connector

699:

for

A

S

Tronic.

Connector

577

for

A

GC.

200404



2-137

Electrical system

5

ELECTRICAL SYSTEM

CF65/75/85 series ≥0E621376

10

32

1358030/26

EL001348

1

23456789

1

0

1

1

1

2

1

3

1

4

1

5

1

6

1

7

1

8

1

9

2

0

2

1

2

2

2

3

2

4

2

5

2

6

2

7

2

8

2

9

3

0

3

1

3

2

3

3

3

4

3

5

3

6

3

7

3

8

3

9

4

0

4

1

4

2

4

3

4

4

4

5

4

6

4

7

4

8

4

9

5

0

5

1

5

2

5

3

1240

1240

1240

1240

4595

4595

4595

1240

1240

4595

4595

4595

4594

4594

5241

4594

4594

4594

4595

4595

4594

1240

5241

4596

4596

4595

4595

4595

4595

4596

4596

3668

3668

3668

3668

4595

1211

1211

4595

1211

3402

9999

9127

9127

9127

3402

4594

3410

3410

3410

5241

3402

5241

1240

18/400

1

564

3

564

11

588

DVB

DVB

C750

5

71

0I

4

564

17

626

1

626

5

650

C751

5

71

0I

A068

11

!

!

!

2

1

B245

2

1

B246

F088

2

1

4

650

!

!

!

3

650

2

650

16

626

!

E570

1

2

P

33/403

7

914

D929

E091

15A

1010

1000

1010

1000

E035

10A

F000

2

1

P

D814 B22

11

D705

4

42

D703

1

42

15

626

1

650

F087

2

1

C46/

594

B23/

593

B11/

593

D26/

595

D22/

595

D27/

595

E5/

596

A5/

592

D900

B14/

593

626

18

5

4

3

1

2

G259

200404



2-138

5

ELECTRICAL SYSTEM

Electrical system

CF65/75/85 series ≥0E621376

10

33

ROOF

SPOTLIGHTS/COOLER

BOX/ROT

A

TING

BEAMS

ROOF

SPOTLIGHTS

Marker/parking

lights

in

roof

spotlights

A

voltage

is

applied

to

connection

point

2

of

C622

(lighting

switch)

via

fuse

E

084

and

wire

1101.

When

this

switch

is

operated

(connection

between

contacts

2

and

1),

voltage

is

applied

to

connection

point

85

of

relay

G

000

(tail

light/width

marker

light

relay)

via

w

ire

2100.

This

relay

is

activated.

A

voltage

is

now

applied

through

contacts

30

-

87

of

relay

G000,

fuse

E000

and

wire

2102

to

C163,

C165,

C167

and

C169

(width

marker

light

in

roof

spotlights).

T

he

marker

and

parking

lights

in

the

spotlights

now

come

on.

Roof

spotlights

A

voltage

is

applied

to

connection

point

A8

of

C832

(direction

indicator/windscreen

wiper

stalk

switch)

via

fuse

E

084

and

wire

1101.

When

this

switch

is

operated

(connection

between

contacts

A8

and

A9),

voltage

is

applied

to

connection

point

85

of

relay

G

002

(main

beam

relay)

via

w

ire

2120.

This

relay

is

activated.

A

voltage

is

now

applied

through

contacts

30

-

87

of

relay

G002,

fuse

E006

and

wire

2122

to

C002

(left

m

ain

beam)

and

connection

point

6

of

C

813

(roof

spotlights

swit

ch).

When

this

switch

is

closed

(connection

between

contacts

6

and

2),

voltage

is

also

applied

to

connection

point

85

of

G299

(roof

spotlights

relay).

This

relay

is

activated.

A

voltage

is

now

applied

through

fuse

E142,

wire

1154,

contacts

30

-

87

of

G

299

and

wire

2135

to

connection

point

1

of

C

162,

C164,

C166

and

C168

(roof

spotlights).

T

he

spotlights

w

ill

now

light

up.

COOLER

BOX

The

cooler

box

is

connected

to

voltage

BEFORE

contact.

V

oltage

is

applied

to

connection

point

1

of

B

356

(cooler

box)

from

fuse

E142

via

w

ire

1154.

ROT

A

TING

BEAMS

The

rotating

beams

are

connected

to

voltage

BEFORE

contact.

V

oltage

is

applied

to

connection

point

6

of

C

716

(rotating

beams

switch)

from

fuse

E

142

via

w

ire

1154.

When

the

switch

is

closed

(connection

between

contacts

6

and

2),

voltage

is

applied

to

C

144

(left

rotating

beam)

and

C145

(right

rotating

beam)

via

wire

2017.

These

rotating

beams

will

now

light

up.

Switch

C716

may

be

replaced

by

C715.

200404



2-139

Electrical system

5

ELECTRICAL SYSTEM

CF65/75/85 series ≥0E621376