Lincoln Electric NA-3 Service Manual page 102

G-2
Wiring Diagram (NA-3)
N.A. WHEN START P.C. BOARD IS INSTALLED, JUMPER CONNECTOR "A" IS REMOVED.
N.B. THESE LEADS ARE NOT PRESENT ON LOGIC P.C. BOARDS
WITH DIP SWITCHES.
N.C. WHEN VARIABLE VOLTAGE P.C. BOARD IS INSTALLED,
JUMPER CONNECTOR "C" IS REMOVED.
N.D. 531-532 115VAC
250VA
531-25 115VAC (SWITCHED)
N.E. 87-531 115VAC - 1/2A SWITCHED.
N.F. ON EARLIER UNITS, LEAD #689 WAS LOCATED BETWEEN
#31 AND #67 (FORMERLY #5), LEAD #510 WAS LOCATED
BETWEEN #87 AND #32 AND LEAD #31 WAS LOCATED
NEXT TO #681. CAREFULLY NOTE LEAD POSITIONS
BEFORE MAKING ANY CONNECTIONS TO TERMINAL
STRIP.
FLUX OR
WATER
SOLENOID
87 531
532
631
2
532
531A
POWER SOURCE
532
OUTPUT CONTROL
532
10K
25
HAND
OFF
77 576 575
AUTO
TRAVEL
SWITCH
625
INCH UP
WIRE FEED
SWITCH
SPEED CONTROL
593
5K
INCH DOWN
641 642 634
SWITCH
592
STOP START
SWITCH SWITCH
539S
592 582 581
539S
WORK TO POWER SOURCE
D.C. METER SHUNT
NA-3N AND NA-3S WIRING DIAGRAM
N.G. WHEN CONTROLS ARE USED WITH R3S POWER SOURCES
OF THE TYPE WHICH USES TAPS CONNECTED WITH A
TRIANGLE PLATE FOR MAJOR VOLTAGE ADJUSTMENTS
JUMPER TO BE CONNECTED TO PIN "L". FOR ALL OTHER
POWER SOURCES, JUMPER TO BE CONNECTED TO PIN "H".
UNITS SHIPPED WITH CONNECTION MADE AT PIN "H".
N.H. THIS FUSE NOT PRESENT ON EARLIER CONTROL P.C.
BOARD MODELS.
*
INDICATES CONNECTOR CAVITY NUMBERS
1 4 7 1 4 7 10
2 5 8 2 5 8 11
ELECTRICAL
3 6 9 3 6 9 12
SYMBOLS PER
E1537 CAVITY NUMBERING SEQUENCE
(COMPONENT SIDE OF P.C. BOARD)
WIRE FEED MOTOR
539 541
ARM
CR1
FLUX
RELAY
627 626
510
585
3
N.E.
1
CONTROL POWER
A
SWITCH 87 87 2
B
531 531 531 4
C
GND. GND.
FLUX CONNECTOR
31
532
32
A 532
VM B 25
C 531
+ -
D GND.
TRAVEL
21 CONNECTOR
N.D.
67
531
531A
531A
5 AMP
A
CIRCUIT 539 539 JUMPER CONNECTOR "C"
B
VARIABLE VOLTAGE P.C.BD. (NA-3S ONLY)
BREAKER
541 541
C
627 627
D
626 626
E
GND. GND.
MOTOR CONNECTOR
A
2 2
B
4 4
C
31 31
D
32 32
E
21
21
F
AM 75 75
G
76 76
+ H
-
77 77
I
GND.
517
CONTROL CABLE TO
67
POWER SOURCE
TERMINAL
STRIP
67
517 528 539S
4CR
ELECTRODE TO POWER SOURCE
REED SWITCH ACTUATED
WORK
BY WELDING CURRENT
NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.
ELECTRICAL DIAGRAMS
Methods of Travel
For earlier logic P.C. For Logic P.C. Boards with
Boards with jumpers dip switches
Connect 1 2
Start/stop with switches Lead #691 to P6
Lead #692 to P5
SWITCH #1
1 2
Connect
Start/stop with current Lead #691 to P6
Lead #692 to P7
SWITCH #1
Connect 1 2
Start with current
Lead #691 to P5
Stop with stop switch
Lead #692 to P7
SWITCH #1
1 2
Start with start switch Connect
Stop after crater fill Lead #691 to P8
(Crater fill board installed) Lead #692 to P9
SWITCH #1
NA3 SHIPPED WITH LOGIC PC BOARD
SET FOR INDICATED MODE OF TRAVEL
AND BURNBACK.
CR2 CR3
TRAVEL CONTACTOR
RELAY RELAY
510 510
589 682
3 3
625 1 1
250 510
2 2
4 4
1/2A SLOW BLOW FUSE
610
2 4
F1
N.H.
F3
3/10A FUSE
525
75
629
539
635
77
N.G.
76
515
583(S)
CONTROL P.C.BD. 584(S)
N.C.
START P.C.BD. (OPTIONAL)
F2
3/10A FUSE
525
75
2 626 629
1 627 539
10 541 635
7 77
539
12 532 76
9 583(C)
631
6 610 515
510
8 588
11 510A 584(C)
N.F.
CRATER FILL P.C.BD.
(OPTIONAL)
Methods of Burnback
For earlier logic P.C.
Boards with jumpers
3 4 1 2 3 4 Connect
Wire feed stop & contactor
Lead #693 to P3
delay
Lead #690 to P4
SWITCH #2
3 4 1 2 3 4
Connect
Inch up & contactor delay Lead #693 to P1
Lead #690 to P4
SWITCH #2
3 4 1 2 3 4 Connect
Inch up & no contactor
Lead #693 to P1
delay
Lead # 690 to P2
SWITCH #2
3 4 1 2 3 4
1 2 3 4
SWITCH #2
SWITCH EXAMPLE
SWITCH POSITION 1 IS UP
SWITCH POSITION 2 IS DOWN
SWITCH POSITIONS 3 AND 4 ARE NOT APPLICABLE
LOGIC
P.C.BD.
11
12
10
9
7
8
1
*
10
5
5
3
6
2
JUMPER
4
12
CONNECTOR "A"
3
11
7
6
N.A.
4
8
9
11
JUMPER
12
CONNECTOR "B"
9 *
8
10
8 510A
5
9 682
6
2 592
3
3 634
4
1
6 681
7
4 576
1 575
Use of crater fill board
Crater board installed? For earlier logic P.C. For Logic P.C. Boards with
Boards with jumpers dip switches
Yes Connect 1
(Remove jumper connector "B" Lead #694 to P10
from 584(c) to 583(c))
SWITCH #1
No Connect 1
(Install jumper connector "B" Lead #694 to P8
from 584(c) to 583(c))
SWITCH #1
G-2
For Logic P.C. Boards with
dip switches
1 2 3 4 1 2 3 4
SWITCH #1 SWITCH #2
1 2 3 4 1 2 3 4
SWITCH #1 SWITCH #2
1 2 3 4 1 2 3 4
SWITCH #1 SWITCH #2
693
586
587
637
562
589
585
581
582
689
528
510A
510A
N.B.
2 3 4 1 2 3 4
SWITCH #2
2 3 4 1 2 3 4
SWITCH #2
1-5-96J
L6488
NA-3 AND NA-4