DAF LF45, LF55 Series. Manual — part 385
1
1427090/03
EL001557
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1000
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1000
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1008
4176
3173
1167
1127
1167
BN
BW
BN
BW
1167
1167
1008
1167
1167
1167
4179
1167
4178
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4176
9036
4176
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1009
1009
1167
1167
4176
9036
4176
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4176
4179
4179
1123
9303
1123
9303
9001
4179
4179
1357
4179
1357
1357
1357
1357
1357
4178
A500
1/705
2/705
B525
A1/
752
A5/
752
D900
E1/
747
E349
80A
2
1
A3
718
4
822
A1
718
3
822
7
822
3
834
5
822
E330
5A
2
1
E153
10A
2
1
G367
88
88A
85A
85B
86
G368
88
88A
85A
85B
86
C853
5
71
0I
C854
1
2
!
!
!
!
!
!
!
!
!
!
!
A5
A7
C2
C5
C4
A2
C1
A3
A4
A1
D924
G425
30
85
86
87A
87
2
822
1
834
2
834
2
832
1
832
6
822
8
822
1
833
2
833
D826
+
4
2
3
1
831
4
902
2
831
3
A513
3
B6/702
D942
1000
1000
1010
1010
E143
10A
200440
2-29
5
ELECTRICAL SYSTEM
Electrical system
series
45/55
LF
2.
IGNITION/ST
ARTER
SWITCH/CHARGING
C
IRCUIT
CONT
ACT
CIRCUIT
When
ignition/starter
switch
C
841
is
turned
to
the
“accessories”
position
(contact
1
connected
to
contact
6),
the
“accessories”
relay
(G355)
is
energised
via
wire
1130.
If
ignition
switch
C841
is
turned
further
(contact
1
is
connected
to
4),
ignition
relay
G015
will
be
activated
via
wire
4001.
Wire
1010
is
supplied
w
ith
power
.
ST
ARTING
C
IRCUIT
When
the
contact
switch
is
turned
to
the
“start”
position,
contacts1
and
2
in
this
switch
are
connected.
Power
is
supplied
to
relay
G203
via
w
ire
4002.
The
V
IC
(D900)
connects
G203
to
earth
when
the
neutral
position
switch
(E569)
in
the
gearbox
is
closed.
Relay
G203
now
supplies
power
via
w
ire
4009
to
connection
point
50
of
the
starter
motor
(B010).
A
s
a
result,
the
starter
m
otor
is
energised. This
means
that
if
the
gearbox
is
not
in
neutral
the
V
IC
does
not
connect
relay
G203
to
earth
and
the
relay
is
therefore
not
energised.
CHARGING
C
IRCUIT
When
the
ignition
is
switched
on,
power
is
supplied
to
both
the
B+
connection
and
connection
15
(pin
3)
of
the
alternator
.
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
(pin
3)
will
rise
to
about
28.5
V.
O
nce
this
voltage
is
reached,
the
control
IC
in
the
regulator
interrupts
the
pre-exciter
coil
to
enable
the
voltage
to
be
regulated.
The
magnetic
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.
The
regulator
reactivates
w
hen
the
voltage
drops
below
27.6
V.
T
his
m
eans
that
the
voltage
supplied
by
the
generator
remains
relatively
constant.
T
he
batteries
are
supplied
through
generator
output
B+1.
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.
Errors
are
also
shown
on
the
DIP
display
through
this
connection.
The
alternator
is
also
equipped
with
a
‘sens’
connection
(pin
4).
H
owever
,t
his
connection
is
not
used
and
is
now
connected
directly
to
B+2.
The
function
of
this
connection
is
to
correct
the
voltage
dif
ference
between
B+
and
the
batteries.
200440
2-30
5
ELECTRICAL SYSTEM
Electrical system
series
45/55
LF
2
1427090/03
EL001559
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
1000
4009
4002
1000
4002
1000
4173
1211
4001
1000
1000
1000
1000
1000
1000
1211
1020
4009
1000
4009
1211
1020
4721
1211
1020
1020
4721
4721
1211
G014
1
5
1000
1000
1000
1130
4001
1211
A500
50
30
B010
M
31
1
730
5
768
4
720
B3
714
3
858
8
720
1/705
2/705
1/704
B12/702
B8/703
A5/701
A11/702
A10/702
G525
G525
4
768
2
858
B1
718
C51/
745
D900
D29/
746
C20/
745
D903
B39/
757
E349
80A
2
1
E286
125A
2
1
D942
1000
1010
4173
4001
G203
32
1
4
G015
3
1
24
M
1010
1000
E035
10A
G355
1
18
C841
1/808
2/808
4/808
6/808
E569
2
4
G
3
B+1
L /2
B-
+15 /3
S /4
A513
B+2
G520
200440
2-31
5
ELECTRICAL SYSTEM
Electrical system
series
45/55
LF
3.
TACHOGRAPH
SEE
THE
SYSTEM
MANUAL
FOR
M
ORE
INFORMA
T
ION
Location 19
Electronic
unit,
ECAS-3
(D851):
If
ECAS-2
fitted,
then
electronic
unit
D
802
200440
2-32
5
ELECTRICAL SYSTEM
Electrical system
series
45/55
LF
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