Lincoln Electric SVM132-A service manual LN-8N, -8NE, -8S, and -8SE Wiring Diagram

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G-2											ELECTRICAL DIAGRAMS
Wiring Diagram
						LN-8N, -8NE, -8S, AND -8SE WIRING DIAGRAM
																										JUMPER CONNECTOR IS REMOVED AND CONNECTOR
									BURNBACK P.C. BOARD																		"A" PLUGGED INTO OPTIONAL VARIABLE VOLTAGE
				2 502		4	504 531	32A																			POWER SOURCE BOARD.
JUMPER CONNECTOR IS REMOVED									(OPTIONAL)																								N.B.
AND CONNECTOR "B" PLUGGED							*
																			21			635 636 637				567							WIRE FEED
INTO OPTIONAL BURNBACK
				1		2							8	32A																			SPEED
P.C. BOARD.					6		3 4	5
																																	RHEOSTAT
											CONTROL		2	7													CONNECTOR "A"						632
													11	541					1		2	4	5		6	3
											P.C.
				2		4	504 53132A
					502								5										*
											BOARD			543													VARIABLE VOLTAGE
		CONNECTOR "B"											10
											541	*															P.C. BOARD					634 5K OHMS
													12	32A																					631
													7	637					21			635 636 637 567					(OPTIONAL)
	THERMAL CIRCUIT											J1	6	636
				R
	BREAKER	626									539		1	635										5 AMP CIRCUIT BREAKER									POWER SOURCE
				541 B
													9	631				32A															OUTPUT
													4	632																			RHEOSTAT
		528		WIRE																32						INTERLOCK SWITCH							76
													3	634
				FEED
		525															DIRECTION						627					536
				MOTOR
																	OF WIRE
																								682
																	FEED					683										75	10K OHMS
				539	U																							ON		OFF
	W																SWITCH										523								77
	W	627		W
		G																									BEAD PINS ON
	W								GROUNDING
																											BOTTOM OF BOARD
									LEAD
																																	LOW VOLTAGE
														531		32A						683		536						R
									PROTECTOR																	1CR			B
											525			504	502		523 7				627		682										TRIGGER
																											4
																										526							TRANSFORMER
																										531A	2
									525A																											SOURCE
													4CR													32A	3		B
	A	2												10 4	11 1		8	9	5	6	3	7	2	12
																										522	1			R
	B	4												RELAY					*
	C	31							GND														1/ 2AMP 125V.				6									TO POWER
SOURCE														P.C. BOARD									OR 250V. SLOW				5
	D	32
														627			32A						BLOW FUSE
	E	21																	7					529		525A	524
														626
	F	75		N.A.
																																	524	A
WORK TO POWER																																				ELECTRODE
	G	76																																B
	H	77											QUICK CONNECT TERMINALS 7 & 32A
								G																									528	C
	I	GND											TO CONNECT AUXILIARY EQUIPMENT
				.1 OHMS																						529								D
													115 V.A.C., .25 AMP RATING
												543										528					2CR REED SWITCH				567			E
		CASE								GND	541		567
		GROUNDING	31		531				CASE	21				568		BOLTED													568				GUN CABLE
		SCREW
				2 OHMS					GROUNDING					OPTIONAL METER		CONNECTION
									SCREW	2	8 9 5 7		1 4 3 6
														KIT RECEPTACLE
												*																					METER SHUNT
																			WORK								RELAY AND						METER KIT
					* CONNECTOR CAVITY NUMBER
	LEAD COLOR CODING												TO CONTACTOR CIRCUIT														CONTROL BOARD						RECEPTACLE
B = BLACK		W = WHITE																						1	4			1 4	7 10				3 6	9
						CONNECTIONS AS VIEWED FROM							115 VAC			BURNBACK
G = GREEN		U = BLUE
						BACK OF RHEOSTATS WHEN							TO POWER SOURCE WORK			AND VARIABLE								2	5			2 5 8		11			2 5	8
R = RED
						COVER IS UP							TERMINAL			VOLTAGE BOARD								3	6			3 6 9 12					1 4	7
NOTES:
																																	PIN SIDE OF
N.A. RESISTOR USED ON CODES 9090 AND BELOW. FOR CODES ABOVE 9090																								CAVITY NUMBERING SEQUENCE
	THE GROUNDING LEAD PROTECTOR CONNECTS DIRECTLY TO THE CASE																							(COMPONENT SIDE OF BOARD)									CONNECTOR
	GROUNDING SCREW.
N.B. THE VARIABLE VOLTAGE BOARD IS FACTORY INSTALLED IN CV-VV MODELS																										ELECTRICAL SYMBOLS PER E1537
	AND DOES NOT INCLUDE JUMPER CONNECTOR.
																																		2-1-2002M
																																		M14679

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.

G-2

LN-8