Lincoln Electric SVM194-A Welder User Manual


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ELECTRICAL DIAGRAMS
G-20
CLASSIC® 300D & 300G
SCHEMATIC - COMPLETE MACHINE - (CODES 11472, 11473) (L13672)
L13672
C
LASS
IC
300
D(
PE
R
KI
NS
MACHIN
E
SCHEM
ATI
C
NO
NE
L13096
DO N
OT S
CA
LE
TH
IS
D
RAW
ING
EQU
IP
ME
NT
TYPE
:
SU
BJ
EC
T:
NA
CRM37
573
1
PA
GE
___
OF
___
1
ENGINE
ERING CONTROL
L
ED
MANUFACTURER:
No
T
HIS
DOC
UME
N
T C
ON
TAINS P
R
OP
RIETA
RY IN
FO
RMATIO
N
OW
NE
D BY L
IN
C
OLN
GLOBAL, IN
C. A
N
D MAY NOT BE
D
UPLI
CA
TE
D,
C
OMMU
NI
CA
TE
D
TO OT
HE
R PA
R
TIES O
R
USE
D
FO
R A
NY P
U
RP
OSE WIT
HOU
T THE E
X
PRESS
W
RITTE
N PE
RMISSIO
N
OF LIN
C
OLN
GLOBAL, IN
C.
PROPRI
ETA
RY & CONFIDE
NTIAL:
Ne
w
t
MAT
ERIAL TOLERANCE (
"
")
TO A
G
REE
WITH PUBLISHED
STANDARDS.
O
N ALL AN
GLES IS
±
.5
OF A
DEG
REE
ON
3
P
LA
C
E
DECIM
ALS
IS
±
.0
02
i
n.
(
±
0.05
mm)
O
N 2
PLACE DEC
IMALS IS
±
.02
in
. (
±
0.5
mm)
U
NLESS
OTHERW
ISE
SPE
C
IF
IE
D
TOLERA
N
CE
:
MANUFACTURIN
G
TOLERANCE PER
E2056
C
HA
N
GE DE
T
AIL:
REFE
RE
N
CE:
SCA
LE:
MATE
RIAL
DISPO
SITION:
APP
ROV
AL
DAT
E:
PRO
JE
CT
NU
MBE
R:
DOCUMENT
N
UMBER:
DOCUMENT
REVIS
I
ON:
U
NITS:
IF
PRIN
TED
@
A2
S
IZE
INC
H
1/
1
1/
2008
C. Kocsi
s
D. BE
N
DE
R
-
DR
A
WN
BY:
E
NG
IN
EE
R:
CLEVELAN
D
APP
RO
VE
D:
CO
NT
ROL:
A
L13672
OIL
PRESSURE SW
ITCH
/
SENDER
TEM
PER
ATU
RE SW
ITCH
/
SENDER
GLO
W
PL
UG
SW
ITCH
IG
NITIO
N
SW
ITCH
OIL
PRESSURE
GA
UG
E
S
I
G
AMM
ET
ER
+-
IDLER / ENGINE PROTECTION PC BOARD
J1
-2
J1
-1
J1
-3
J1
-6
J1
-7
J1
-8
J1
-9
J1
-4
RE
D
E
NG
IN
E
P
ROT
E
CTIO
N
LIGHT
J1
-
10
ALTE
RN
ATO
R
WK
G
TY
P
IC
AL
CURRE
NT
DRAW
I
S
40 +
/- 3 AM
PS
TY
P
IC
AL
CURRE
NT D
RAW
: 3.3
A
+
HO
U
R M
ET
ER
TY
P
IC
AL
CURRE
NT D
RAW AND
RESI
ST
ANCE:
HOL
D
CO
IL: 1
A
, 10
-
15 OHM
S
P
ULL CO
IL: 40A
, L
ESS
TH
A
N
.1 O
HM
SW
ITCH
CLO
SES
AT 6
+
/-2 P
SI
SENDE
R
OPER
ATIO
N:
0 P
S
I -> 10
+
/-5 OHMS
40PS
I -> 105+
/-5 OHMS
80 P
S
I -> 187+
/-5 OHMS
S
HO
W
NIN
"AUTO
IDL
E"
POS
ITION
SW
ITCH CLO
SE
S
AT
230v
+/-6
vF
SENDER O
PER
AT
ION:
140v
F -
> 1
3
4+/-1
3.5
OHM
S
194
v
F -
> 5
1.
2+/-4.
3
OHM
S
212
v
F -
> 3
8.
5+/-3
OHMS
12 VOLT - NORM
ALLY
OFF
S
HO
W
NIN
"OF
F"
POS
ITION
53
51C
52
50
50A
51
51A
57
21
2D
21
2C
43
20
0
54
44
21
2A
21
2B
61
58
60
84
4
DC EXCITER
-
40
TO 40 AM
PS
AMM
ET
E
R
S
HO
WS
FULL
DI
SCHA
RG
EW
HIL
E PRESS
IN
G
GLO
W
PL
UG
SW
ITCH
65 AM
P
/ 12
V
OLT
GLO
W
PL
UG
S
N.C.
N.O.
E
NG
IN
E
SH
UTDO
WN
E
NG
IN
E
RUN
NI
NG
12.6 VOLTS M
IN
AT
RE
ST
14
-
14.5 VOLTS
W
HIL
E
R
UN
NI
NG
IDL
E
S
OLE
NO
ID
CI
R
UIT
S
(SE
E B
ELO
W
FOR LOGI
C)
INJ
E
CTIO
N
P
UM
P
S
OLE
NO
ID
SCH
EM
ATI
C
G482
8-1
FLYB
ACK
DI
OD
ES
IDL
ES
OLE
NO
ID
LOC
AT
E
D
BE
HI
N
D
UPPE
R
P
ORTIO
N
OF CO
NTROL
PAN
EL
SENDER I
S
AP
PRO
X.
500
OHM
S
AT
70vF
NEG
ATI
VE
O
UTP
UT
TERM
IN
AL
POS
ITIV
E
O
UTP
UT
TERM
IN
AL
GENERA
TOR
L
EAD
B
LOC
K
SHO
W
N AS
VIE
W
ED
W
ITH
ENGINE
IN
THIS
DIRECTION
-
-
+
+
INT
ERP
OLE
CO
ILS
SHU
NT
FIELD
SE
RI
ES
FIEL
D
12 11
10
9
8
7
65
4
3
2
1
P10
J5
FJW-5AP
CO
IL
PA
IR
:
25.2
- 2
6.7
OHM
S EACH
FLYB
ACK
DIO
DE PREVE
NTS
V
OLTAG
E SPIKES
I
N
SHU
NT FIELD
FROM
D
AM
A
GI
NG
LOC
AL/
R
EM
OTE
TOGGLE
SW
ITCH
WHE
N
SW
ITCH
ED
S
HO
W
NIN
LOC
AL
POS
ITION
Y
RHEO
STAT
W
G
X
R
EM
OTE
RECE
PT
A
CL
E
LOC
AL
/
R
EM
OTE
SW
ITCH
P9
J8
4653 1 2
64+/-6.4 OHM
S
M
AX
BRUS
H
POS
ITION
S
HO
W
N
AS
VIEWE
D FR
OM
CO
NTROL
PAN
EL
+
_
N
U
60
2B
60
2
S
EL
E
CTOR
SW
ITCH
90
-MIN
13
0-
80
19
0-
12
0
24
0-
16
0
22
0
-MAX
WELDING
GENERATOR
CCW
JUM
PE
R
PL
UG
I
S
W
IR
E-TIED
U
PBE
HI
ND
LOC
AL
/
R
EM
OTE
SW
ITCH
O
NRI
GHT
S
ID
E
OF M
AC
HI
NE
JUM
PE
R
PL
UG
I
S
FOR
CO
NNE
CTIO
N
TO
W
IR
E
FE
E
D M
OD
UL
E
TY
P
IC
AL
OC
V
(W
A
RM M
AC
HI
N
E):
94
-
99.0 VOLTS
AT M
AX
R
HEO
STAT
44
-
54.5 VOLTS
AT MI
N
RHEO
STAT
JUM
PE
R
PL
UG
I
SW
IR
E-TIED
U
P
BE
HI
N
D LO
C
AL
/
R
EM
OTE
SW
ITCH
O
N
RI
GHT
S
ID
E
OF M
AC
HI
NE
(A
S VIEWED
FROM
CO
NTROL
PAN
EL)
61
0A
+
-
+
-
21
5
81
0
82
0
SLI
P
RIN
GS
21
4
AC
AC
GN
D-E
C
B1
48
6A
7A
20A
11A
11C
21
EX
CIT
E
R
ST
ATO
R
(AL
TER
N
ATO
R)
11B
23
0 V
OLT
RECE
PT
A
CL
E
POS
ITIV
E
SLI
P
RIN
G
IS
N
EARE
ST TO I
RO
N
EX
CIT
E
R
REV
OLV
IN
G
FIELD
(ROTOR)
40
0E
40
0D
15A
61
0
61
0
60
0B
60
0A
42
60
0
41
60
2A
INT
ERP
OLE
CO
ILS
FUS
E
W
INDI
NG
SPE
C:
ALT
-
24
1-
3A
40.5
- 4
2.5 OHM
S
AT 25C
EX
CIT
E
RCI
RC
UIT
L
EA
D 21
A
TO 21B
W
INDI
NG
SPE
C:
ALT
-
21
4-
2B
.488 OHM
S
M
AX
AT 25C
11
5 V
OLT CI
RC
UIT
L
EA
D 810 TO 820
W
INDI
NG
SPE
C:
ALT
-
21
4-
2C
.230 OHM
S
M
AX
AT 25C
11
5 V
OLT CI
RC
UIT
L
EA
D 820 TO 830
W
INDI
NG
SPE
C:
ALT
-
21
4-
2D
.424 OHM
S
M
AX
AT 25C
N
U
42
W
W
Y
Y
THI
S
CIR
C
UIT
USES
TH
E
RES
ID
U
AL M
A
GN
ETI
SM
OF
THE
G
ENER
ATO
R TO FLA
SH
THE
EX
CIT
E
TH
E
R
OTOR
W
HI
C
HIN
TUR
N
P
RO
V
ID
ES
THE
EX
CIT
ATIO
N FO
R TH
E
GENER
ATO
R
60
0C
LO
WE
R, R
IG
HT
S
ID
E
OF C
ONTROL
PAN
EL
DI
OD
E
LO
WE
R,
RI
GHT OF
CO
NTROL
PAN
EL
U
NDE
R L
EFT DOO
R
11
5 V
OLT GFCI
RECE
PT
A
CL
E
HOT
L
IN
E HOT
L
O
AD
W
HI
T
E
LI
NE
W
HI
T
E
LO
AD
40
0F
GN
D-S
84
4A
SW
ITCH
CLO
SES
W
ITH FLO
W
OF
W
EL
DI
NG
C
URRE
NT
GN
D-A
B2
HOL
D
CO
IL
P
ULL CO
IL
B3
55
C
B4
10A
56
GN
D-B
IN-LINE
BO
L
TED CONNECTION
BEHIND CONTROL
PAN
EL
41
THE
P10
P
LUG
IS
ONLY
ON UNITS
W
ITHOUT
THE
W
IRE FE
ED M
ODULE.
THE
W
IRE FE
ED
MODULE
HAS
A
HARNESS
THA
T
P
LUG
S
DIRECTLY
INTO J
5.
GN
D-
T
REE
D
SW
ITCH
BACK
,
B
OT
TOM
OF MA
C
HI
NE
BACK
, L
EFT S
ID
E
OF
E
NG
IN
E
BACK
, TO
P
OF
E
NG
IN
E
BACK
, L
EFT S
ID
E
OF
E
NG
IN
E
LO
WE
R L
EFT OF
CO
NTROL
PAN
EL
LO
WE
R L
EFT OF
CO
NTROL
PAN
EL
TEM
PER
ATU
RE
GA
UG
E
S
I
G
W
HIT
E
BL
ACK
RED
CE
NTE
R
OF CO
NTROL
PAN
EL
CE
NTE
R
OF CO
NTROL
PAN
EL
J2
-1
J2
-2
60C
GHT
S
ID
E
OF
E
NG
IN
E
Y
I
NJ
E
CTIO
N
P
UM
P
GN
D-C
93
LO
WE
R L
EFT OF
CO
NTROL
PAN
EL
ST
A
RT
SW
ITCH
21
2E
BACK
OF O
UTP
UT
STU
D
THIS
L
EAD
PROV
IDES
FL
ASH
FOR A
L
TERNAT
OR AND
SEN
SE
S
AL
TERNAT
OR OUTPUT
APP
RO
X
IM
AT
E
RESI
ST
ANCE
: 3.3 O
HM
S
BACK
,
RI
GHT
S
ID
E
OF
E
NG
IN
E
59
+
B
ATTER
Y
ST
A
RTE
R
MOTOR
ST
A
RTE
R
S
OLE
NO
ID
MOU
NTE
D TO
NEG
ATI
VE
BRUS
H
HOL
DER
DIOD
E A
ND MO
V A
SS
EMBL
Y
TOP,
R
IG
HT
P
ORTIO
N
OF CO
NTROL
PAN
EL
TOP,
LEFT PO
RTIO
N
OF CO
NTROL
PAN
EL
B4
B5
B6
UNUSED
UNUSED
J2
-4
J2
-3
1. U
P
ON
R
E
CI
EV
ING
POWE
R FR
OM TH
E
IG
NITIO
N
SW
ITCH
, TH
E
FU
EL
S
OLE
NO
ID
,
FUEL
P
UM
PAN
D
HO
U
R M
ET
E
R
ARE
ENE
RG
IZE
D.
2.
E
NG
IN
E P
ROT
E
CTIO
N
IS BYPASSED
FOR O
NE
MI
N
UTE
TO
ALLO
W
OIL
PRESSURE B
UIL
DUP
.
E
NG
IN
E
MU
ST
BE
ST
A
RTE
D
W
ITHI
N
ON
E
MI
N
UTE
OF
TUR
NI
NG
IG
NITIO
N
SW
ITCH
ON
OR
TH
E
FUEL
S
OLE
NO
ID
, FU
EL
P
UM
PAN
D
HO
UR
MET
E
R
W
ILL TURN
OFF.
AFTER
O
NE
MIN
UTE
, TH
E
IG
NITIO
N
SW
ITCH
MU
ST
BE
CY
CL
E
D
OF
F A
N
D
BACK
O
N TO
ST
A
RT
E
NG
IN
E.
3.
AFTER
E
NG
IN
E
ST
A
RTS
, FLA
S
HI
NG
CURRE
NT I
S SUP
PLI
E
D TO TH
EE
NG
IN
E
ALTE
RN
ATO
R.
4.
AFTER
O
NE
MI
N
UTE
, TIM
E
R
IS
TIME
D
OUT.
IF OIL
PRESSURE
I
S
LO
W,
CO
OLA
NT TEM
PER
ATU
RE
I
S
HIGH
OR
ALTE
RN
ATO
R
IS
N
OT C
HA
RG
IN
G, TH
E
E
NG
IN
EW
ILL S
H
UT D
OW
N
AN
D TH
E
E
NG
IN
EP
ROT
E
CTIO
N LI
GHT
W
ILL COM
E
ON
.
IDL
E
R
SW
ITCH
W
EL
D LO
A
D
SENS
IN
G
AUX
LO
A
D
SENS
IN
G
1.
WHE
N TH
EE
NG
IN
E
I
S
R
UN
NI
NG
I
NHI
GH
I
DL
E
OR
U
NDE
R LO
A
D,
TH
ES
OLE
NO
ID
I
S
N
OT
ENE
RG
IZE
D.
2. IF N
O
AUX
ILI
ARY
C
URRE
NT D
RAW
OR
W
EL
D
LOA
D
IS SENSE
D FO
R 15
SE
CO
NDS AN
D TH
E
IDL
E
R
SW
ITCH
I
S
O
PE
N (A
UTO), THE
P
ULL
AND
HOL
D
CO
IL OF TH
E
I
DL
E
R
S
OLE
NO
ID
ARE
ENE
RG
IZE
D.
TH
EP
ULL CO
IL I
S
D
E-E
NE
RG
IZE
D
AFTER
H
ALF
ASE
CO
N
D.
3.
IF AN
AU
XILIA
RY
CUR
RE
NT DR
AW
OR W
ELD
LOAD I
S S
EN
SE
D OR T
HE IDLE
R S
WITCH
IS CL
OS
ED
(HIGH), TH
E IDL
E S
OLEN
OID IS
DE-
EN
ERGIZ
ED.
E
NG
IN
E P
ROT
E
CTIO
N CI
RC
UIT LOG
IC
IDL
E S
OLE
NO
ID CIR
UIT
LOGIC
J1
-5
B1
60A
REVERSE V
OLTAG
E
P
ROT
E
CTIO
NDI
OD
E
E
NG
IN
E
P
ROT
E
CTIO
N
CI
RC
UIT
S
(S
EE
B
ELO
W
FOR
LOGI
C)
G
W
D+
B+
81
0
6A
C
B2
15A
82
0
K924-5 REMOTE CONTROL
(OPTIONAL)
RHEO
STAT
R
EM
OTE
CO
NTROL
BOX
2
5+/-1.
25
OHM
S
EACH
6
4+/-6.
4
OHM
S
MA
X
CCW
Y
W
G
X
R
EM
OTE
CO
NTROL
PL
UG
ON NE
W
ER B
OARDS,
J1
BECO
ME
S J
31
, J
2
B
ECOM
ES J3
2,
B5
AND B
6
T
ERMINA
L
S
ARE DE
L
ET
ED.
EA
RTH
GROU
ND
FRAM
E
G
RO
UND
COMM
ON
LA
B
EL
S:
LE
A
D
COLO
R
CO
DE:
EX
.
1
2
PIN CONNECTOR
LATC
H
127
6
2
1
CO
NNE
CTOR
P
IN N
UM
BERS:
RESI
STO
R: O
HM
S/W
ATTS
CAPA
CITO
R:
MFD/
V
OLTS
COM
P
ON
E
NT
V
AL
UE
U
NIT
S:
B-BL
ACK
OR
GR
AY
G-GRE
EN
R-RE
D
OR
P
IN
K
U-BLU
E
W-
W
HIT
E
Y-Y
ELLO
W
N-BR
OWN
VIEWO
F
CONNECTOR ON PC BOARD
G-20
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
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