Lincoln Electric LN-25 SVM179-B Service Manual page 81

G-3
WiriNG DiaGram - lN-25 prO - CODEs 11507, 11508 (G5681-1)
ANALOG DISPLAY CASE FRONT
YELLOW
WIRE FEED SPEED
THERMAL
CONTROL RHEOSTAT
10K2W
R1
577A 575A
ARC
576A
VOLTMETER
VM
TRIGGER
+
CONNECTOR
721 667B
622A
A
B
500A
P14
C
D
E 21A
AC
21B
TO WORK CLIP
N.D.
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine.
TRIGGER
INTERLOCK /
2 STEP
N.B., N.F.
SHOWN IN 2 STEP
N.B.
COLD
FEED
N.O.
1W 1B POLARITY 2B
2W
LED
LED
N.A. N.A.
CONNECTS TO
P7 ON CASE
FRONT
CONNECTS TO
J7 ON HARNESS
721 721A
1 1
500A 500
2 2
3 3
622A 622
4 4
707
5 5
575A
6 575
6
576A 576
7 7
577A
BRIDGE 577
8 8
J7
P7
708
9 9
RECTIFIER
75C
10
10
76C
667A 11 11
667B 77C
12 12
1B
13 13 1B
D1
AC 1W 1W
14 14
2B 15 2B
15
67B
621A 2W 2W
16 16
CONNECTS TO J17
ON HARNESS
67B 67C
1 1
2 2
667A 667C
3 J17 3
P17
21A 21C
4 4
5 5
621A 621
6 6
CONNECTS TO P17
ON CASE FRONT
TIMER KIT (OPTIONAL)
POST-FLOW
1 2
601
509B
TO P60 ON
HARNESS
ElECTriCal DiaGrams
WIRING DIAGRAM LN-25 PRO
S1 S2
509D
509D
509E 509C
CC / CV
587A 523A
N.B.
SHOWN IN CV
P16 509A
509C 509 509
1
S3
612
587A 587
2
509B
523A 523
509E
3
530A 530A 530
4
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
1 601
2 509B
3
4 4B
FEED P60
PLATE 5 605
606
6
7 608
TACH 8 607
R
M OT OR /
GEARBOX U
CONNECTS
B
TO TIMER
KIT
W B
P9
1
2
L4
R
3
531
U 4 537
B 5 534
6 L5
B 7
551
W 8 550
21D
3B
21E
4B
21C
667
76C
1
67E 75C 77C
42
J18 2
667D 667E
L7 41
J15 1 2 3 4 5 6 7 8 9 10
3
CONNECTS TO P18
4
ON CASE FRONT
14 PIN CIRCULAR CONNECTOR
TO POWER SOURCE
BURNBACK A
J60
B
1 67 2
C
2 4
D
3 75D 77D
3 4 5 6 7 8
E
76D 76D
4
P15 F
5
77D 75D G
605 608 6 21F 21F
H
7 2 41A
4B 606 607 I
4
8 L6
J
9 41A 42A
K
10 42A
L
M
67
N
FL EX
CONNECTS TO J8
ON PRESET P.C. BD.
530 523 509A 707 2W
500 3B
587 708 610 622 1W
CONTROL P.C. BOARD
1 2 3 4 5 6 7 8 9 10
J6
J4
J5
1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 9 10 11 12
667 2A 721A 67F 550 690 507 537 531 575
551 691 577 578 534 576
4A 21D 621
507 578
CONTACTOR COIL
CURRENT
1 2 3 4
TRANSDUCER
J11
N OT ES:
CONTACTOR
N.A. PIN NEAREST THE FL AT EDGE OF LED LENS (ANODE) ALIGNS WITH WHITE
N.D.
21E 4A 42 LEAD OF LED SOCKET.
N.C.
2A 41 N.B. T OG GL E SWITCHES SHOWN FROM REAR CONNECTION SIDE OF SWITCH.
N.C. PRESENT ON CONTR OL CABLE MODELS ONLY.
N.D. PRESENT ON ACROSS THE ARC MODELS ONLY.
N.E. CONNECT " EXTRA" TO "TORQUE " ON EXTRA TO RQUE MODELS ONLY.
N.F. N OT PRESENT ON ALL MODELS.
J19 CONNECTS TO 14 PIN
CIRCULAR CONNECTOR
E
D
OUTPUT
J14
CONTROL
C
REMOTE
VOLTAGE GENERAL INFORMATION
CONTROL
ELECTRICAL SYMBOLS PER E1537
A J
LEAD COLOR CODING
K
42VAC
B
B - BLACK
J12
L
C
W - WHITE
M
D
E
G-3
S4
GAS PURGE
PUSHBUTTON
SWITCH
612
N.O.
610
N.B.
J1
1 601
2 606
3 608 GAS
4
SOLENOID
5
605
J2
6 607
690
7
EXTRA
8 TO RQUE
9
N.E.
10
691
1
2
3
4
J3
5
-
6 BLACK
FAN
7
8 RED
67F
67C
67D 67E
INPUT ELECTRODE
CABLE CONNECTION
A
CAVITY NUMBERING SEQUENCE
B
(VIEWED FROM COMPONENT SIDE OF P.C. BOARD)
1 2 1 3 1 4
J11, J16, J18 J12, J17 J3, J5, J9, J60
I
3 4 6 5 8
4
H
N
1 5 1 6 1 8
G
J1, J2, J8, J15 J4 J6, J7, J10
F
6 10 7 12 9 16
B
G5681-1
lN-25™ prO