Pfaff 487

38
C
ircuit dia
g
ra
m
11
.
03
C
ircuit dia
g
rams
11
.03
.
0
1
R
eference list for the
C
ircuit dia
g
rams 91-191 501-9
5
A
1
Co
n
t
r
o
l
u
ni
t
Qu
i
c
k P4
0
ED
A
2
C
ontrol panel BDF
S
2
A14
S
ewing head recognition system (
O
TE)
H1
Sewin
g
lam
p
(o
p
tional)
H
1
0
LED
st
i
tc
h
counter
M
1
S
ewin
g
motor
Q1
M
a
in
s
wi
tc
h
S
1
M
anua
l
b
ac
k
tac
ki
n
g
k
e
y
S
1. 1
P
e
d
a
l
s
p
ee
d
contro
l
un
i
t
S6
S
tart inhibitor (E6 sto
p
)
X
0
PC
-interface
(
R
S
232
)
X1
Motor
X2
I
ncremental transducer
X
2.1
I
ncremental transmitter ada
p
ter
X
2.2 S
y
nchronizer ada
p
ter
X
2.
3
Y
5-911
/
..
b
ac
k
tac
ki
n
g
d
ev
i
ce
X
3
S
peed control unit
X
3
.1
Y2
thread trimmer -900
/
..
X4
A
2 Control panel BDF S2
X
4.1
Y
4 automatic foot lift ( -910/.. )
X
5
O
ut-/in
p
ut
X
5
.1
S
1 Manual backtacking key
X
6
B
obbin thread monitor (optional)
X7
P
hotoelectric barrier (optional)
X8
Y
8 thread tension release (FSL)
X22
Y2
th
rea
d
tr
i
mmer -900
/
..
X
24
Y
4 automatic foot lift ( -910/.. )
X
2
5
Y
5
b
ac
k
tac
ki
n
g
d
ev
i
ce
(
-911
/
..
)
X2
8
Y
8 thread tension release
(
F
S
L
)
X
50
A
14
S
ewing head recognition system (
O
TE)
Y2
t
h
rea
d
tr
i
mmer -900
/.
Y4
a
utomatic foot lift ( -910/.. )
Y
5
b
ac
k
tac
ki
n
g
d
ev
i
ce
(
-911
/
..
)
Y
8
thread tension release
(
F
S
L
)