Lincoln Electric 655/R Welder User Manual


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ELECTRICAL DIAGRAMS
G-17
SCHEMATIC - DIGITAL POWER SUPPLY PC BOARD
.1
C53
Vfb2
Vref 1
100K
R29
CNY17-3
OCI2
4 2
1
6
5
.5
W
27V
DZ2
VFB
CS
CO
MP
RT/CT
VCC
OUT
VR
EF
GND
X4
2
35
1
6
4
8
7
.5
W
27V
DZ3
V
re
f 2
15.0K
R1
4.7
35V
C3
.022
C49
221K
R34
10.0K
R56
100V
150p
C27
200V
1
C26
56.2K
R38
gnd_mcps
1.0A
30V
D23
T2
12
3
+5V
2000V
.00
15
C31
50V
0.1
C2
J42
4
50V
0.1
C25
1.0
35V
C23
D10
1.0
0K
R26
J43
9
D9
4.7
35V
C24
D25
G
D
S
21A
200V
Q2
150p
C52
1.0A
30V
D20
3W
0.05
R30
1.2
1K
R37
75K
R31
15.0
R32
3W
18
V
DZ7
OV2
D
ete
ct
600V
1A
30-5
5 VDC
<
30
VDC
Under
voltage
1A
600V
ADJ
IN
OUT
X3
1.8
2K
R20
15
R43
J43
1
5.62K
R28
D2
T2
14
1
OV1
4.7
35V
C1
D15
3W
3.
3V
DZ4
D14 D17
4.7
35V
C33
4.7
35V
C10
D1
D12
T2
10
5
50V
0.1
C5
5.62K
R45
GND
IN
OUT
X6
OV2
GND
IN
OUT
X7
1.0
35V
C29
D13
100V
10p
C28
T2
11
4
Shutdown
249
R33
1.0
35V
C30
50V
0.1
C9
J43
5
150
R44
J43
4
150
R25
J43
10
> 5
5 VDC
Over
voltage
600V
1A
600V
1A
.33W
CAN
+5Vol
ts,
.100 Amp
RS232
+5Vol
ts,
.100 Amp
.33W
50V
820p
C4
Shut
Down
Capacito
r
DC Input (
+)
1A
OV1
600V
56.2K
R39
J41
1
J41
4
4.7
35V
C6
3W
24V
DZ1
+
t
R55
T1
7
6
100V
10p
C32
50V
820p
C8
J41
3
6.19K
R3
J41
2
D3
VFB
CS
CO
MP
RT/CT
VCC
OUT
VR
EF
GND
X5
2
35
1
6
4
8
7
DC
I
np
ut
(-)
50V
0.1
C7
Machine Cont
rol
100K
R10
5.62K
R12
1.0A
30V
D21
G
ND
N.A.
SINCE COMP
ON
ENT
S
OR CIRCU
ITRY ON A
PRINTED CIRCU
IT B
O
ARD MAY CHAN
GE
NUMBER.
NOT
SHOW
T
HE EXAC
T
COMPONENT
S OR C
IRCU
IT
RY OF CONTROLS H
AV
ING
A COMMON
CODE
WITHOUT AF
FECTI
NG THE
INTE
RCHA
NGEABILITY
OF A
COMPLETE BOARD
,
THIS
D
IAGRAM
MAY
NOTE
S :
15Volt
s, .250Amp
s
SPI
.33W
Op
era
ti
on
J43
6
1
0.0
K
R22
J43
3
100V
150p
C46
43.2
K
R18
+
t
60V
.13
R40
J43
11
X2
TL431
REF
8
1
6
44.2K
R42
J43
12
CNY17-3
OCI3
42
1
6
5
50V
2700p
C16
Vfb2
V
re
f2
+5Vo
lt
s,
3
Am
ps
SPI
475K
R21
200V
1
C13
1
0.0
K
R4
6A
200V
D4
1
0.0
K
R27
1
0.0
K
R2
Op
era
ti
on
10
-
55
VDC
33.2
R15
100
16
V
C43
47.5
R58
T1
1
2
11
12
10.0
R60
+
t
60V
.13
R50
10.0
R9
47.5
R6
47.5
R7
10.0
R61
+5Vo
lt
s, .
750
Am
p
100
16
V
C41
332
R53
50V
0.1
C39
6A
200V
D18
33.2
R16
LED2
+5V
Vref 1
Mac
hi
ne
C
on
tr
ol
Power S
up
pl
y
47.5
R57
T1
10
3
1.0A
30V
D22
2000V
.00
15
C12
J42
3
43.2K
R49
100K
R5
221K
R52
44.2K
R51
50V
2700p
C42
1
0.0
K
R13
CNY17-3
OC
I1
42
1
6
5
1.8
2K
R14
D24
J42
5
J42
2
J42
6
3A
600V
D19
G
D
S
21A
200V
Q1
30.1
R35
475
R8
30.1
R36
3W
18
V
DZ8
3W
0.05
R11
T1
5
8
22
35V
C1
1
50V
0.1
C14
.33W
1.0
35V
C47
1.2
1K
R46
ADJ
IN
OUT
X8
ADJ
IN
OUT
X9
T1
9
4
1.0
35V
C40
J42
1
X1
TL431
REF
8
1
6
1.2
1K
R48
50V
0.1
C44
4.7
35V
C38
gnd_mcps
Vfb1
Vfb1
.
75
0
Am
p
+15Vo
lt
s
-1
5Vo
lts
,
.1
0
0A
mp
1A
600V
.33W
D8
100V
150p
C45
2.49K
R23
50V
0.1
C21
J43
2
J43
7
150
R64
J43
8
+
t
.24
R1
7
150
R62
LED1
2.49K
R19
100
16
V
C35
150
R63
332
R41
50V
0.1
C34
100
16
V
C37
16
A
200V
D16
100
16
V
C36
D7
D6
4.7
35V
C19
4.7
35V
C20
T2
8
7
4.7
35V
C18
4.7
35V
C17
T2
13
2
50V
0.1
C22
+
t
.24
R24
.33W
.33W
1A
1A
600V
600V
.33W.33W.33W
.200 A
mps
Gate D
r
ive
+20Volts
Gate D
r
ive
+20Volts
.200 A
mps
T2
9
6
S
O
L
ID
ED
G
E
EN-170
M
ANUF
ACTURING TO
L
ER
ANC
E
P
ER
E
2056
UNLESS OTHERWISE SPECIFIED TOLERANCE
SCA
L
E:
DO NO
T
SC
AL
E
T
HIS DR
A
WING
ON 3
P
LA
CE
DEC
IMA
LS IS
±
.
002
T
HIS
SHEE
T C
ONT
AIN
S P
ROP
RIE
TAR
Y IN
FORMA
TIO
N O
WNE
D B
Y
TH
E LINC
OL
N EL
ECT
RIC C
OMPAN
Y A
N
D IS NO
T
T
O B
E R
EPRODUCE
D, DISCLO
SE
D O
R U
SE
D
WI
THOU
T
TH
E E
XPRES
S
W
RIT
TE
N P
ER
MI
S
SIO
N OF
TH
E LINC
OL
N EL
ECT
RIC C
OMPAN
Y, CLE
V
EL
AN
D, OHIO U.S.A.
DESIG
N
I
NFO
RMATI
ON
t
D
RAWN
BY:
WI
T
H
PUBL
IS
HE
D
STA
ND
A
RD
S.
DATE:
O
N
2
P
LAC
E
DE
CIM
AL
S I
S±.02
MATE
RI
AL
T
OLERA
NC
E
(" ") T
O
AGREE
O
N
ALL
A
NGLE
S I
S±
.5
O
F
A
DEGREE
SUBJECT:
ENG
I
NEER:
EQ
UIP
M
ENT
TYPE:
DRAWIN
G
N
o
.:
JP\TK
Digital
Systems
Sc
h
emati
c,
Digita
l Power
Supply
G
NONE
1
1-30-
98
REFERENCE:
SU
PE
R
SE
DI
NG:
AP
PRO
VED
:
3631
Chg
. S
hee
t
No.
"X"
I
NFO
.
6-2-
200
0A
1
0-27-2
00
0E
E
ART
H G
ROUN
D
CONN
ECT
ION
POW
ER SU
P
PL
Y
SOU
RC
E
PO
INT
VOLTAG
E
NE
T
SU
P
PL
Y
R-
FRA
ME
CO
NN
ECT
ION
LA
S
T N
O
. U
S
ED
CO
MM
ON CON
NEC
TI
ON
D-
C-
LABELS
CA
P
AC
ITOR
S
=
U
NLESS OT
HE
RWIS
E SPE
CIF
IE
D)
DIODE
S =
FILENA
ME:
G3631-2D2
MFD
(
GENERA
L I
NF
ORMA
T
IO
N
U
NLESS OT
HE
RWIS
E SPE
CIF
IE
D)
RE
SISTO
RS
= Ohms (
(U
NLESS OT
HE
RWIS
E SPE
CIF
IE
D)
1
A,
400V
EL
ECT
RI
CAL
SYM
BOL
SP
ER
E153
7
1/4W
.022/50V
G-17
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
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