Lincoln Electric IM278-D manual NA-3N and NA-3S Wiring Diagram

NA-3N AND NA-3S WIRING DIAGRAM

Methods of Burnback

	For earlier logic P.C.	For Logic P.C. Boards with
	Boards with jumpers	dip switches
Wire feed stop & contactor	Connect	1	2	3	4	1	2	3	4
	Lead #693 to P3
delay
	Lead #690 to P4	SWITCH #1				SWITCH #2
	Connect	1	2	3	4	1	2	3	4
Inch up & contactor delay	Lead #693 to P1
	Lead #690 to P4	SWITCH #1				SWITCH #2
Inch up & no contactor	Connect	1	2	3	4	1	2	3	4
	Lead #693 to P1
delay
	Lead # 690 to P2	SWITCH #1				SWITCH #2

Methods of Travel

	For earlier logic P.C.	For Logic P.C. Boards with
	Boards with jumpers	dip switches
	Connect	1	2	3	4	1	2	3	4
Start/stop with switches	Lead #691 to P6
	Lead #692 to P5	SWITCH #1				SWITCH #2
	Connect
		1	2	3	4	1	2	3	4
Start/stop with current	Lead #691 to P6
	Lead #692 to P7	SWITCH #1				SWITCH #2
Start with current	Connect	1	2	3	4	1	2	3	4
	Lead #691 to P5
Stop with stop switch
	Lead #692 to P7	SWITCH #1				SWITCH #2
Start with start switch	Connect	1	2	3	4	1	2	3	4
Stop after crater fill	Lead #691 to P8
(Crater fill board installed)	Lead #692 to P9	SWITCH #1				SWITCH #2

1 2 3 4

SWITCH EXAMPLE

SWITCH POSITION 1 ISUP SWITCH POSITION 2 ISDOWN

SWITCH POSITIONS 3 AND 4 ARE NOT APPLICABLE

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 ISINSTALLED, 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.

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.

N.J. THIS LEAD IS PRESENT ON CODES 10311 AND HIGHER. N.K. THESE LEADS ARE NOT PRESENT ON EARLIER START AND

CRATER FILL P.C. BOARDS.

N.L. ALL FUSES WERE REPLACED WITH PTC RESETTABLE FUSES ON LATER CONTROL P.C. BOARDS.

*INDICATES CONNECTOR CAVITY NUMBERS

			WIRE FEED MOTOR
	FLUX OR	539	ARM	541			DOOR
	WATER
	SOLENOID						SUBPANEL	CR1	CR2
87	531							FLUX	TRAVEL
								RELAY	RELAY
		627		626
								510	510
				N.E.				585	589
532									625
		CONTROL POWER			A
631		SWITCH		87		87
					B
2		531		531		531
531A	532			GND. C		GND.
		31		FLUX CONNECTOR				532
		32

CR3

CONTACTOR

RELAY

4510 3

	682	250	510
	2
	1	610
2	4
		F1	N.H.
		F3	N.L.

1/2A SLOW BLOW FUSE
3/10A FUSE	GND	525	629	539	636	635	641	642	75	76	77

LOGIC P.C.BD.

1	4	7	1	4	7	10
2	5	8	2	5	8	11
3	6	9	3	6	9	12

CAVITY NUMBERING SEQUENCE (COMPONENT SIDE OF P.C. BOARD)

								A	532
				VM				B	25
				+	-			C	531
								D	GND.
				21				TRAVEL
								CONNECTOR		N.D.
	532	POWER SOURCE 67				531
		OUTPUT CONTROL
532				10K
25	HAND					531A
	OFF		77	576 575				531A
TRAVEL	AUTO					5 AMP	539	A	539
SWITCH						CIRCUIT		B
625						BREAKER	541		541
INCH UP		WIRE FEED					627	C	627
SWITCH								D
		SPEED CONTROL					626	E	626
593				5K			GND.		GND.
							MOTOR CONNECTOR
INCH DOWN			641	642 634		2	A		2
SWITCH						4	B		4
							C
592						31			31
		STOP	START				D
						32			32
		SWITCH SWITCH					E
						21			21
539S							F
					AM	75			75
							G
						76			76
					+	-	H		77
592		582	581			77	I
									GND.
				539S	517		CONTROL CABLE TO
					67
							POWER SOURCE
									TERMINAL
									STRIP

			532	592	562	635	636	637	525	539	67	528	21	531A
												N.G.
			1	5	6	12	8	11	4	10	9	7	3	2
									*				N.C.
			JUMPER CONNECTOR "C"
			VARIABLE VOLTAGE P.C.BD. (NA-3S ONLY)
510	4	2	87	32	541A	541	626	627	539	539S
31	67	681	21	77	76	75	689	528	582	581

539	525	539S	593	629	539	525	587	586
6	2	5	4	1	7	3	9	8
				*
CONTROL P.C.BD.
	F2
	3/10A FUSE

2 626

	1	627
	10	541
*	7	539
	12	532
	9	631

6 610

8	510
11	510A

N.F.

	N.K.	N.J.
GND	2
525	11	10			12							11
75	12		6	3		8	1	2	9	7	4
629	9						*
539	8
		*					*
635	10
77	5										10	11	12
76	6	1	2	3	4		6	7	8	9
515	4
583(S)	3
584(S)	7
START P.C.BD. (OPTIONAL)			584(S)									583(S)
	N.K.	635		629	76		515	75	GND	539	525		77
GND
525	11						*
75	12
629	9	1	2	3	4	5	6	7	8	9	10	11	12
539	8
635	10	*
77	5
76	6
583(C)	3
515	4		584(C)			588			GND			583(C)
588	1	635		629	76		515	75		539	525		77
584(C)	7
CRATER FILL P.C.BD.
(OPTIONAL)

			10
			7
			1
			5
			3
	JUMPER	*	2
			12
	CONNECTOR "A"
			11
	N.A.		6
			4
			8
			9
	JUMPER
	CONNECTOR "B"
	8	510A
	9	682
*	2	592
	3	634
	6	681
	4	576
	1	575

693

586

587

637

562

589

585

581

582

689

528

510A 510A

690	694	691	692
	N.B.

WIRING DIAGRAMS

		67
	517	528 4CR 539S
		ELECTRODE TO POWER SOURCE
WORK TO POWER SOURCE	WORK	REED SWITCH ACTUATED
		BY WELDING CURRENT	NA3 SHIPPED WITH LOGIC PC BOARD
	D.C. METER SHUNT
			SET FOR INDICATED MODE OF TRAVEL
			AND BURNBACK.

ELECTRICAL

SYMBOLS PER

E1537

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	2	3	4	1	2	3	4
(Remove jumper connector "B"	Lead #694 to P10
from 584(c) to 583(c))
			SWITCH #1				SWITCH #2
No	Connect		1	2	3	4	1	2	3	4
(Install jumper connector "B"	Lead #694 to P8
from 584(c) to 583(c))
			SWITCH #1				SWITCH #2

A

L6488-1

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram for a particular code is pasted inside the machine on one of the enclosure panels. If the diagram is illegible, write to the Service Department for a replacement. Give the equipment code number.