Lincoln Electric SVM127-A service manual Electrical Diagrams, LN-9

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G-2	ELECTRICAL DIAGRAMS
Wiring Diagram

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G-2

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VOLTS-SPEED	516	513	SET-ACTUAL
SELECTOR SWITCH			SWITCH
517	DIGITAL METER
C2	N.O. N.C. N.O. N.C.

CONTROL RHEOSTAT PLUG

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510

518

562

518

BURNBACK

P.C. BOARD (OPTIONAL)

JUMPER CONNECTOR IS REMOVED AND HARNESS CONNECTOR IS PLUGGED INTO OPTIONAL CONTACTOR DROP OUT DELAY P.C. BOARD

4	3	2	1	C1
5				516
6			12

711

8 9 10

C3 513

561517 METER

560 BOARD PLUG

32A 531 504 4 2 502

		*
5	4	3	2	1	6

		METER BOARD												515		512
562	561	560		517	510	518		510C	602	601
														514		511
9	8	7		5	2		6	3	4	1
562	561	560	517	517	510	518		510A	602	601
					518		510B					515		512
															511
													514
METER
PANEL					8			7	6	5	9	3	4	1	2
PLUG
					510B		510A		602	601		515	514	512	511

634		3				VOLTAGE
						P.C. BOARD
635		10
636		9	WHITE		N.A.
510B		12
			JUMPER			S
514		7
515		1	*			F
525		4			A
			B
520		2				N.D.
510		6			BLUE
					JUMPER
510B		8
						B
667		11	N.A.
500		5				Y
						P
					*	A
525		1				S
						S
521A	*	2 5	1 2 6	3	9 12 4 8	7 1110
500		3
521		4
N.E.	N.D.	500	522 530 524	521	533 500	B A

		WIRE SPEED CONTROL
	5	RHEOSTAT
		10K
	3
631		633
632	4	631
		632

6337

6349

635	6	635
	8	636
636		634
620	2	10K
621	1	VOLTS CONTROL
		RHEOSTAT

1/8 AMP FAST BLOW FUSE

C

32

5 AMP

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METER PANEL		METER
ASSEMBLY		BOX
GROUND		GND.
N.F.	CASE GND.

525 510

555

TACH

PICK UP

P.C. BOARD

BLACK

BLUE

RED 626

WHITE 627

WIRE

FEED

MOTOR

	H	C
	G	B
INPUT	D	32
	F	A
CONNECTOR
	A	2
	B	4	31
	C	31	2
	E	21
	I	GND

32A		531	504	4	2A	502				667		510B	POLARITY
													SWITCH
														626
									67			21		627B
													627
					2A
2			32A
1/2 AMP SLOW BLOW FUSE
POWER				14			502
P.C. BOARD
				15			504
				3			32A
539				4			521
541				13			524
				5			500
626B		*		1
627B				6			510
				7
32A				10			525
7				2			540
528				11			510
527				12			628
532	527	526		8			529
				9			531			22K
												534	500
BLACK	RED	RED							533
						602			YELLOW
									601
									TRIGGER P. C. BOARD
												530
531									T1			500
					BLACK			31	620	621	622	623

626B	DIRECTION
	SWITCH
	TP1
	G.L.P. REED
	SWITCH (CR4)
	530
533		500
				534
	631	5
	632	6	525	510	555
	633	4
		11
	500	14	JUMPER
	510A	8			S
	511	3	*		F
	512	2
	520	1		N.B.
	524	15
	510	9
	628	13
	525	10	CONTROL
	540	12
		7	P.C. BOARD
	ONE MAGNETICALLY
	TIGHTLY COUPLED TURN
	621		32A
	RED		T2
	620		531	N.C.
		BLACK			.1

32A

32A 32A

534

2A 530

2 522

622A

B TRIGGER

623C CONNECTOR D

E

CIRCUIT BREAKER

G.L.P.

RESET

HOT-COLD-INTERLOCK

SWITCH

500

NOTES:

N.A. VOLTAGE P.C. BOARD WHITE JUMPER TO BE SHIPPED CONNECTED TO PIN "S". VOLTAGE P.C. BOARD BLUE JUMPER TO BE SHIPPED CONNECTED TO PIN "B".

N.B. CONTROL P.C. BOARD JUMPER TO BE

SHIPPED CONNECTED TO PIN "F".

N.C. RESISTOR USED ON CODES 9131 AND BELOW.

FOR CODES ABOVE 9131 THE GROUND LEAD IS CONNECTED DIRECTLY TO THE CASE.

N.D. NOT PRESENT ON EARLIER VOLTAGE P.C. BOARDS.

N.E. JUMPER PLUG IS REMOVED WHEN THE OPTIONAL PULSED POWER P.C. BOARD HARNESS PLUG IS CONNECTED TO THE VOLTAGE P.C. BOARD. REPLACE THE JUMPER PLUG IF THE OPTION IS DISCONNECTED.

N.F. NOT PRESENT ON ALL CODES.

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INPUT CABLE

529	628
WELD CURRENT
REED SWITCH (CR2)	67

GROUNDING

STUD

GUN CABLE

ELECTRICAL SYMBOLS PER E1537

* CONNECTOR CAVITY NUMBER

CONNECTIONS AS VIEWED FROM BACK OF RHEOSTATS

CONNECTION FOR D.C. TYPE POWER SOURCES. FOR OTHER TYPE POWER SOURCES (R3S, SAM, AND SAF OR SA WITH K224) SEE OPERATING MANUAL.

CAVITY NUMBERING SEQUENCE (COMPONENT SIDE OF BOARD)

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R

5-24-96F

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CLEVELAND, OHIO U.S.A. L7197

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.

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