Lincoln Electric IM278-D manual Wiring Diagrams

NA-4 WITH CURRENT CONTROL RHEOSTAT

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. 531-532 115VAC; 531-25 115VAC (SWITCHED) - 250 VA

N.D. 87-531 115VAC - 1/2A SWITCHED.

N.E. ON EARLIER UNITS, LEAD #689 WAS LOCATED BETWEEN #31 and #67 (FORMERLY #5), LEAD #510 WAS LOCATED BETWEEN #87 & #32, AND LEAD #31 WAS LOCATED NEXT TO #681. CAREFULLY NOTE LEAD POSITIONS BEFORE MAKING ANY CONNECTIONS TO TERMINAL STRIP.

N.F. JUMPER LEAD TO BE CONNECTED TO PIN "H" AT ALLTIMES. UNIT SHIPPED WITH LEAD IN THIS POSITION.

N.G. THIS FUSE NOT PRESENT ON EARLIER CONTROL P.C. BOARD MODELS.

N.H. THIS LEAD PRESENT ON CODE 10318 AND HIGHER. N.J. THESE LEADS ARE NOT PRESENT ON EARLIER START

AND CRATER FILL P.C. BOARDS.

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

ELECTRICAL SYMBOLS PER E1537.

*INDICATES CONNECTOR CAVITY NUMBERS

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)

Methods of Travel

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

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
1	2	3	4	1	2	3	4

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

1 2 3 4

SWITCH EXAMPLE

SWITCH POSITION 1 ISUP SWITCH POSITION 2 ISDOWN

SWITCH POSITIONS 3 AND 4 ARE NOT APPLICABLE

											NA-4 SHIPPED WITH LOGIC P.C. BOARD
											SET FOR INDICATED MODE OF TRAVEL
											AND BURNBACK.
						WIRE FEED MOTOR
				FLUX OR							DOOR
				WATER		539	ARM		541
				SOLENOID							SUBPANEL			CR1								CR2
	87		531											FLUX								TRAVEL
														RELAY								RELAY
						627			626
														585			510					589			510
								N.D.								3								3
															1						6251
		532
					CONTROL POWER					A
		631			SWITCH				87		87			2							2
										B
		2				531			531		531						4							4
	531A		532						GND. C		GND.
						31		FLUX CONNECTOR										532
					32
							N.C.		A	532
					VM				B	25
					+	-			C	531
									D	GND.															531A
					21									532	592	562	635	636	637	525	539	67	528	21
									CONNECTOR
									TRAVEL
532		POWER SOURCE 67				531
		OUTPUT CONTROL
532
				10K
25	HAND					531A
																	12		11		10
														1	5	6		8		4		9	7	3	2
	OFF		77	576	575				531A
TRAVEL	AUTO																			*
						5 AMP			A															N.F.
SWITCH								539		539
						CIRCUIT			B					VARIABLE VOLTAGE P.C.BD.
625						BREAKER		541	C	541
INCH UP		WIRE FEED						627		627
SWITCH									D
		SPEED CONTROL						626	E	626
593			5K					GND.		GND.
								MOTOR CONNECTOR
INCH DOWN				641			2	A		2
SWITCH		634	642	641			4	B		4
								C			510					541A	541	626	627	539	539S
592							31			31				87	32
		STOP	START					D				4	2
							32			32
		SWITCH SWITCH						E
							21			21
539S								F
						AM	75			75
								G
							76			76
						+ -		H
							77			77
592		582	581					I
										GND.
			539S			517
								CONTROL CABLE TO					681					689	528	582	581
						518		POWER SOURCE			31	67		21	77	76	75
											TERMINAL
											STRIP

CR3

CONTACTOR

RELAY

4510 3

682	250	510
2
1	610

24

N.G.				F1				N.K.
				F3				3/10A FUSE
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.E.

SWITCH #1 SWITCH #2

1/2A SLOW BLOW FUSE

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

GND	525	629	539	636	635	641	642	75	76	77			LOGIC
													P.C.BD.
10			12							11						693
	6	3		8	1	2	9	7	4						10	586
						*
															7	587
						*									1	637
															5	562
1	2	3	4		6	7	8	9	10	11	12				3	589
													JUMPER	*	2	585
															12	581
													CONNECTOR "A"
															11	582
													N.A.		6	689
															4	528
635	584(S)	629	76		515	75	GND	539	525	583(S)	77
															9	510A
															8	510A
						*							JUMPER
													CONNECTOR "B"
1	2	3	4	5	6	7	8	9	10	11	12		8	510A
													9	682
												*	2	592
													3	634
635	584(C)	629	76	588	515	75	GND	539	525	583(C)	77		5	641
													4	576
													6	681
													1	575
															690	694	691	692
																N.B.

WIRING DIAGRAMS

CURRENT SENSOR CR4

P. C. BOARD 518 528 539S 517 67

ELECTRODE TO POWER SOURCE

WORK TO POWER SOURCE WORK

CURRENT TRANSFORMER

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

L6489-1

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.