Lincoln Electric SVM179-B Welder User Manual


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ElECTriCal DiaGrams
G-10
lN-25™ prO
sChEmaTiC - lN-25 prO - COmplETE maChiNE CODEs 11620, 11621, 11716, 11717 - (G5683-2) pG1
G568
3-
2
LN
-25 P
R
O A
N
ALOG
MAC
HI
N
E SC
HEM
ATIC
NONE
G5683-
1
DO NO
T
SC
AL
E
T
HIS DR
A
WING
EQ
UIP
M
ENT
TYPE:
SUBJECT:
SCA
L
E:
UF
CR
M40943
1
PAGE ___ OF
___
2
E
NGI
N
EE
RI
NG
CO
NT
RO
LLE
D
MA
NU
FA
CT
URE
R:
No
THIS DOCUMENT CONTAINS PROPRIETAR
Y
INFORMATION OWNED B
Y
LINCOLN GLOBA
L, INC.
AND MA
Y
NOT BE DUPLICATED, COMMUNICATED
TO O
THER PARTIES OR US
ED FOR
AN
Y
PURPOS
E WITHOU
T
THE EXPRES
S WRIT
TEN PERMISSION
OF LINCOLN GLOBAL, INC.
PRO
PRIETARY & C
ONFIDENTIAL:
t
MAT
ERI
A
L TO
L
ER
ANC
E ("
"
) TO A
GR
EE
WITH
PU
B
LI
SH
ED
ST
ANDARD
S.
ON A
LL
AN
GL
E
S I
S ± .5 OF
A D
E
GR
EE
ON
3
PLACE
D
E
CIM
ALS
IS
± .
00
2 i
n.
(
±
0.
0
5
mm)
ON 2
PL
AC
E D
ECIM
AL
S I
S ± .02 in. (
±
0.5 mm)
UNLESS OTHERWISE SPECIFIED TOLERANCE:
M
ANUF
ACTURING TO
L
ER
ANC
E
P
ER
E
2056
R
ELEASE
D A.03 F
ROM "
X
".
CHAN
GE
D
ET
AIL:
REFER
ENCE:
MA
T
ERI
AL
DIS
PO
SI
T
ION:
AP
PRO
VA
L
DA
T
E:
PROJ
EC
T
NUMBER:
DOCUMEN
T
NUMBER:
DOCUMEN
T
REV
ISI
ON:
IF PR
IN
T
ED
@ A
1
SIZ
E
UNI
T
S:
IN
CH
1
1/6/
2009
tpe
ar
n
ENYEDY
BS
DRAWN BY:
ENGINEER:
CLE
VE
L
AND
APPROVED:
CONTROL:
A
G5683-2
LN-25 PRO WIRE FEEDER
St
a
rt-Up
On power-
up,
the LN
-25 P
RO w
il
l
l
ight the
motor
thermal LE
D and
pol
ar
ity LE
D 2
-3 se
conds.
If the
feede
r i
s powered
-up with the trigge
r dep
re
ssed, weld
ing w
ill
not start un
ti
l the trigge
r i
s re
lea
sed and then depres
sed aga
in.
Note
s:
Motor over
cu
r
rent l
imit var
ie
s with WFS
.
FE
ED
PL
AT
E
67
C & 67
D
J4-10
1
4
3
2
6
5
P9
8
7
MOT
O
R /
GEARBOX
W
B
551
550
531
L4
537
534
72 H
Z TO 1.2 KHZ
R
-B 15.0 VD
C
B-
U 6.2 VD
C A
NY SPEED
(METE
R
D
EPE
NDE
NT
)
Mot
or i
s l
oc
ate
d
be
hi
nd
gl
ast
ic
pane
l
G
ear
bo
x rat
io
is
23.5:1
Motor c
ase i
s at
el
ectr
od
e pote
nti
al
From Power Sour
ce
(E
le
ctrode
C
onnect
ion
)
J4-7
0-5V PULSE SIGNAL
FREQUENC
Y
=
SPEED
WIRE FEED
SPEED
0V = MIN
SPEED
5V = MAX
SPEE
D
GAS PURGE
FLE
X
IBLE
PO
WE
R P.C. B
OA
RD
SCHE
MATIC
=
G4783
T
op
of
m
otor
Mot
or re
si
sta
nc
e
is
1.5
oh
ms
LeadsPassthrough
toroid 2times.
R
U
B
L
oc
at
e
d
on
C
as
e fro
nt
LeadsPass
through
toroid2times.
ISOLATED 2-4 TO
POWER SOU
RCE
BLACK
RED
FAN
+
-
S4
GAS PURGE
PUSHBUTTON
SWITCH
(
N.O
.)
61
2
61
0
13.5 VD
C W
HEN
NOT
D
EP
R
ESSE
D
J6-1
J6-7
J2-1
(LOCATED
I
NSI DE OF
CONTROL BOX)
FA
N BLOWS AIR AC
ROSS
CO
NT
RO
L PC BOA
R
D
CO
NTI
NO
U
SLY
AT
6200 RPMS.
GAS
SOLENOID
69
0
69
1
J4-4
J4-3
J2-5
100K
ohm
+15V
J3-7
+5
V
J
3
-
1
J
3
-2
J
3
-3
J3
-4
J
3-
5
PROGRAMMING
PCB
FACTORY USE ONLY
GAS SOLENOID
-
+
WORK
C
LI
P
+35V
POWER
SUPPL
Y
POWER
SUPPL
Y
+5V SPI
+15V SPI
OVER
VOL
TAGE
PROTECTION
ISO
LED
3
5VDC
+5VDC
+15V ISO
-15V
C
OM
MO
TOR
SUPPL
Y
C
OM
J5-1
J5-8
62
1A
Located onCase Front
J4-11
J4-12
J4-6
10
0K
o
hm
+5
V
J3-6
J3-8
+5
V
S
PI
J4-9
1
0K
o
hm
+15V
COM
534
537
531
J4-1
J4-2
550
551
TACH
FEEDB
ACK
Model
Ranger 8,9
Classic
Ranger 250,305
Commander300,400,500
(Common Analog
Controls)
V350
(Common Digital
Controls)
DC
-
400, 600
Square Wave TIG 300/355
MillerInverters
STTII
K
2613
-1
K2613-2
Recom mended
all CV
operation.
Recommended f or
CV operation.
(Wire F
eed
ModuleRequired)
Recommended for CV
operation.
Recommended
for CV
operation.
May be used for
pulsewelding if
the welding
procedure is
qualifiedby the
customer.
Recommended
forCV andCC
operation.
Notrecommendedfor CCoperation
because thecustomer may
experience short contactor life from
inductive nature of the power source.
Notrecommendedwithhighfrequency
TIG starting.
Recom mended
for CVv oltage
sense operat ion.
Not
recommended for
use whenpulse
welding.
Notrecommended
forSTToperation.
Note:
Most semiautomatic wire
welding processes perform
betterusingconstantvoltage
powersources. Besurethe
properpowersourceisused
for your application. Contactor
lifemaybeshortenedin
applicationsusing CC
machineswith highOCV.
J5-6
J5-7
21D
67F
721
J5-5
AN
ALO
G
VOLTMET
ER
667B
721
-
+
TRIGGER
-15
+15
72
1 IS DRIV
EN NEGATIVE TO COMPENSATE
FOR THE METER FOR D
IODE DROP
ERROR
ON THE BRIDGE
METER
COMPENSATION
CIRCUIT
POLARITY
SENSE
PROGRAM
BURNBAC
K
M
OTO
R
D
RI
VE
CI
RC
UI
T
MO
TOR VOL
TAGE
MO
TOR CURRENT
BRAKE
DRIVE
BRAKE
D
RI
VE
PW
M
0.05K
oh
m
L5
J6-3
J6-2
587
530
J6-4
523
J6
-6
509A
+15
V
COLD FEED
CC/VV
T
RI
GG
ER I
NT
ERLOC
K / 2 S
T
EP
S
1,
S
2
& S
3 L
oc
ate
d
on Wir
e
D
riv
e
P
an
el
CC
509D
CV
509E
TRI
GGE
R I
NT
E
RL
OCK
(N
OT
PRESE
NT
O
N
K2613-3)
S1
587
2-ST
EP
Lo
cat
ed
on Wir
e
D
riv
e
P
an
el
T
rig
ger I
nter
lo
ck
do
es
not
sto
p
w
eldi
ng
w
he
n th
e ar
c i
s br
ok
en.
P
ul
l a
nd r
el
ea
se t
o e
nd t
he
w
el
d.
509B
S2
523
S3
C
OL
D F
EED
530A
509E
(LOCATED
A
T
REAR
O
F
FEEDER)
66
7C
0V=
CO
L
D FEE
D
(
N.O.)
15V=
CV
0V=
CC
15V=
2 STEP
0V=T
RIGGE
R
INTE
R
LO
CK
4B
606A
2
4
+15V
J
5-4
J5-3
MOV
MACHINE
OUTPU
T
ENABLE
CONTAC
TOR DRIVE
COM
+35V
J4-
8
J4-5
CO
NT
A
CT
OR
4
O COIL
0
VDC
OPEN
3
VDC CLOSED
12 VDC COIL
PWM
CO
NTROLLED
507
578
20
ohm
0V = OF
F
2
0msec ----
25
0msec
605
601
J2-6
J2-3
608
607
J2-7
COM
Y
ELLO
W
THERMAL
LED
COM
POLARITY LED
J6-11
1W
J6-14
B
+5V SPI
GREEN
POLARITY
LED
Y
ELL
OW
MOT
OR
TH
E
RM
AL
LE
D
ARC ESTABLISHED
J1-2
J1
-1
+5V SPI
+15V
J1-10
J
1
-8
J
1
-6
J
1-5
J1
-4
J
1
-9
J
1
-3
J
1
-7
S
C
L
K
C
S
3
C
S
2
C
S
1
C
S
0
M
O
S
I
M
IS
O
SPI
DIGITA
lL COMMUNICATION
J6-8
-15V
GAS
ON - OF
F
GAS
FLOW
ENABLE
Lo
cat
ed
un
der
Wire
D
riv
e
P
an
el
(LOCATED
A
T
OUT
SI
DE
REAR
O
F
FEEDER)
10K/2W
0 VD
C MI
N. WFS
5 VD
C MA
X
.
WFS
WI
R
E F
EE
D
SPEED
CO
NT
R
OL
P
OT
E
NTIOM
ET
ER
62
1
66
7
11
10
P7
12
Conn
ect
or
l
oc
at
ed
behin
d c
as
e fro
nt
COM
15
14
(LOCATED
A
T
TOP
FRON
T
O
F
FEEDER)
MICRO
CONTROLLER
COM
MO
TOR
SUPPL
Y
6
8
7
5
1
3
4
6
2
8
7
9
10
J18
1
P16
L
oc
at
e
d
on
top
of m
ot
or
PLASTIC
HO
U
SE
D BOLTE
D
CO
NNE
CTIO
N
(BASE
CE
NTE
R)
TIMER KIT
P.C. B
OA
RD
(
OPTIO
NAL
)
SCHE
MATIC
=
M213
41
SEE
PAGE 2
L12081 2.6 V
@ 50
IPM
27
V @
700
IPM
L13084 2.6 V
@ 25
IPM
32
V @
400
IPM
0V
.=
TR
IG
GER
CLOSED
15
VDC
.=
TR
IG
GER
OPEN
Lo
cat
ed
on
C
as
e
F
ront
TRI
GGER
IN
P
UT
TRI
GGE
R
CONNE
CT
OR
J14
622A
500A
E
B
C
D
A
P7-1
67D
67C
66
7B
67
B
4
1
3
6
67C
67B
IN
HARN
ESS
CE
NTE
R BASE
AR
EA
P
7
=
16
PI
N
P
17
=
6
PI
N (
B
oth
are
lo
cat
ed on
lo
w
er fr
ont)
57
7A
57
6A
57
5A
57
7A
57
5A
57
6A
57
7A
57
6A
57
5A
77
C
76
C
75
C
531
537
534
40V MA
X.
21
B
.05
uF
60
0 V
70
7
608
607
J2-8
4B
gun connecto
r
4 of 4
3 of 4
J6-9
J6-10
622
500
+15
V
2 of 2
P
17
P7
1 of 4
P7
When tach feed back is
lo
st,
the voltage to
the
motor is a
constant 10VD
C.
(c
ontro
l
led b
y so
ftware
)
P
17
ca
se
fron
t
str
ain
rel
ief
1 of 2
5
2 of 4
coppe
r
bar
coppe
r
bar
weld cable
13
2B
1B
R1
D1
ca
se
ba
ck
str
ain
rel
ief
509C
21
A
21
C
21E
JU
MPE
R TOGET
HE
R FO
R
EX
TRA TO
RQ
U
E MAC
HI
NE
P6
0
3
4
5
67
8
601
509B
605
2
1
3
4
2
J2-2
+5V
606
EX
TRA TO
RQ
UE
TAKEN WITH 40 V INP
UT
IN
C
V MODE.
66
7A
WFSlimitedbyarcvoltagewhenoperatingacrossthearc
Feeder Input Volts Standard Gear Extra Torque
15
280
210
17
340
235
21
440
400
24
520
400
27
600
400
Maximum WFS
EXTRA
TO
RQUE
Control
Boar d Summary
Converts arc power to a usable control circ uit voltage.
Recei ves switch signals from Trigger, Cold Feed, Gas Pur ge
Reads WFS potentiometer.
Communicates with optional timer ki t.
Controls motor speed with PW M.
Turns Gas Solenoid on, off
, PWM
.
Reads the motor tachometer.
O
perat
ing V
o
ltage=
15
-
110 VD
C.
Shut down
Voltage
=130
VDC
.
Thermal light turns on when shutdown voltage exceeded.
Code and Serial numbers are below Wire Drive on plastic
housing Nameplate.
Thermal “Yellow” Light
Moto r O
ver
Current
Motor and trigger disabled for30 seconds.
Must retrigger to start weldingafter 30 seconds pass.
Shutdown Voltage exceeded
May occur with someinverters.
May occur with some CC machines with high
inductance.
Polarity “Green” Light
On=
Positive Polarity
Off=Negative Polarity
70
8J6-5
9
2W
J6-12
16
509B
The WFS range of the LN-
25 PRO
No
rmal Speed
= 40
- 700 IPM.
E
x
tra Torque
= 25
- 400 IPM.
Before 2-20-2009
After 2-20-2009
*Extra Torque
370 530 700
180* 257* 400*
3.5
4.5
3.5
4.5
Preset
WFS
Current
Level
Current
Level
Preset
WFS
77
C
76
C
75
C
61
0
61
2
B1
B2
C2
C1
C1
C2
B1
B2
66
7D
66
7E
B2
B1
62
1
66
7D
25
TO 35
NOR
MAL
FL
OW
RATE
GOOD FO
R A
r, CO2,
CO
2/Ar BLEN
DS
(O
UTSIDE
BACK
O
F
CASE)
FL
OW
METER
22 O COIL
0
VDC
OPEN
4 VDC CLOSED
12 VDC COIL
PWM
CO
NTROLLED
BALL FLOAT
U
SE MID
D
LE
OF BALL TO
SET
AD
J
UST VALVE
NOT P
R
ESE
NT
ON S2750
5
J6
1-
1
J6
1-
3
J6
1-
4
J6
1-
2
J6
2-
2
J6
2-
1
MOTO
R
FI
LTE
R
P.
C.
BOAR
D
SCH
EM
A
TI
C=
S2
75
92 B
EFOR
E 6/15/2
00
9
S2
75
05 A
FTE
R
6/15/2
00
9
U
SE
D TO
DIS
CHA
RGE
POWER S
U
PPLY
CAP
AFTE
R A
HIG
H VOLTAGE
TRA
N
SIENT. LATER
R
ELO
C
ATED TO THE
CO
NT
RO
L BOAR
D.
U
SE
D FO
R FILTE
RI
NG
INVE
RTE
R
NOISE
J1
5
14 PIN
R
EMOTE
LEA
D
S ARE
PR
ESE
NT B
UT
NOT
U
SE
D I
N
THIS
U
NIT.
NOT
U
SE
D
J2-10
555
622
500
4
2
555
3
555A
622B
G-10
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
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