Lincoln Electric DC-655 service manual Electrical Diagrams

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G-2																				ELECTRICAL DIAGRAMS
Wiring Diagram (G3348-1)
	DUAL (EXCEPT 380/500V & 230/400V) & SINGLE VOLTAGE																						10A 42V CIRCUIT BREAKER									1				J15				P15						OUTPUT					J14								8
	UNDER 346 VOLTS (SHOWN CONNECTED FOR LOW VOLTAGE)																						42A	42								2				75			1		75					CONTROL								202					7		202		AM
				TO																											32	3				75			2		75					10K								201					6		201		-
		N.D.	H3					RECONNECT					.0045MFD																																																		+
				SUPPLY																												4				76			3		76				236	R1		75						210					5		210
			H2	LINES					PANEL					3000V																	2	5				77			4		77													315					4				+
																																																R3
			X1	L3 L2	L1								3	C9															GND.		4	6				2			5		2													215					3				VM
																																													237		10K 1/4W
												TO																	STUD		77	7	J16			41			6		41													317					2				-
								11 3		9	6	RECONNECT 2		C8																		8				210			7		210													222					1		222			OPTIONAL
TO GROUND PER				W																					20A
												PANEL											32								31	9				32A			8		32A							SW3															ANALOG METERS
NATIONAL								10	2	8	5		1	C7											115V
ELECTRICAL				V														31						CIRCUIT							76	10				4			9		4				238	76	77	OUTPUT	N.E.			OR													FROM
			256					12	1	7	4										115V RECEPTACLE			BREAKER							75	11				41			10		41																		8
CODE				U																																									226			CONTROL						202
																															21	12				41			11		41							SWITCH											7				6	336
				CR 1																			32A		32A						41	13							12															201					6				5	334	T1
																																				42A					42A																				J12				AUX.
			CONTACTOR								FLEX												32						2		42	14							13															210					5				4	333
			255A		H1		TO PRIMARY				LEAD	CONNECT OR INSULATE																								222			14		222					237	236							315					4		J13		3	335	WINDINGS
								COILS																	222																													215
												AS SHOWN ON INPUT										31																																					3				2	332
												CONNECTION DIAGRAM															210																											317					2				1	331
			SINGLE VOLTAGE OVER 345 VOLTS																							T.S.2																												222					1		OPTIONAL DIGITAL
																							31
																												+21	-21 41 4	2	31 32	T.S.1		75 76	77																										METER P.C. BOARD
				TO								H4	H3	H2	H1
		N.D.	H2					RECONNECT																																																					OPTIONS
				SUPPLY
									PANEL
			H3	LINES														211				255			255				OUTPUT		4	2
			X1	L3 L2	L1								X1		X2																		2
																				SW1							282		TERMINAL
													T2 CONTROL																SWITCH
TO GROUND PER				W				11 3											POWER SWITCH							RED					SW5 4																					215 201 202				315		317			222 210
													TRANSFORMER											BLK
NATIONAL								10	2																T3		281
ELECTRICAL				V
			256
CODE								12	1													255			CONTROL
				U																					BOARD
																									TRANSFORMER
																																																					1	2	3	4	5	6	7	8	9 10
				CR 1																							255
			CONTACTOR
			255A		H1		TO PRIMARY																		W		PILOT																											1				J3			1		201
								COILS																256			LIGHT																											2							2		202
																																																						3							3		75
																											256																											4							4
																	335		336																																			5		J2					5		314
																											THERMAL																					231						6				J1			6		226
																									41	PROTECTION			Y		305																	210						7							7
																											LIGHT	+		-																		281						8							8		317
																															BRASS
																																																						9		N.J.					9
																												41			TERMINAL
													T1 MAIN				S	42V																														282						10						10			318
																																																									S1
																													N.F.																									11						11			310
													TRANSFORMER				F							SECONDARY
																																																238						12		1 2 3 4				12			309
																		333						41 THERMOSTAT																									CONTROL							OFF				13			315
																	S					41				273			41A																															14			222A
																	F	10V					41	41			CHOKE LEAD															1	41A						P.C. BOARD							J21
																		334
																											THERMOSTAT																41
																				42A																						2
																	S	331																								3	301						1	2	3	4	5	6	7	8	9 10 11 12 13 14 15 16
													1			2			3																		G1		1
																		10V		32A																						4	2
																	F	332																			G2		2			5	208
																				S
																		42A																			G3		3	J4	J5	6	207										215		321	341
													PRI.				S					115V															G4		4			7	206						222	340	345			344			346				328	322	342
																		45V		F																	G5		5			8	205
													4			5			6
																	F	41			31		31														G6		6			9	4
												N.A.																														10	310
																							31														A		1			11	309
													7	203		8	205		9	207
			N.G.																				W														B		2			12	215
	1													F			F	32V		F	32V	FAN																	3			13	231
													13	32V		14	S		15	S		MOTOR															B'		4			14	214
	2													S																										J7
		32											PRI.			11			12				B														C		5			15	203						J22						P22								341
	3												10	204			206			208																							204
	4	GREEN												AUX1																							C'		6			16										1
																																							7			1	261						261							261
		2
	5																																				A'		8		J6	2	262					262				2				262
	6	4																																								3	263						263			3				263							215
P16	7	77																					300																FIRING CIRCUIT
																																										4							342			4				342
													SEC.																										P.C. BOARD
	8			32		42
	9	31					31
	10	76	GREEN				41	STANDARD																																OUTPUT CHOKE						LOW
	11	75		2				14-PIN																											319
																																														(-)																	340
	12	21		4			21	RECEPTACLE																													THERMAL FAN
																												1		1	315				NTC											HIGH																	215
	13	41		77			75	(FRONT VIEW)																													THERMISTOR									(-)
	14	42				76							SEC.												32A			2	J11	2	318				316					222A																							344
																												3		3	317										222																						SW2
																									300			4	J10	4	41				N.H.							222	222
																																															OUTPUT
																									G2			14		5													222																				MODE
																									A4			13		6	314												TP3																				SWITCH
																									G1			12		7	301					222												ARC FORCE						10K									(SHOWN IN CC
																																											320V
OPTIONS																A1			A3			A5			G4			11		8	305			30									160J											R4				328					POSITION)
			DUAL FEEDER P.C. BOARD																						A5			10		1	319			300W R2									(ALL 3)		C6	C2	TP2				321				322
																									G5			9	J20													210
						1																			A6			8		2	316												210	.05MFD
																													J9
						2																			A3			7							214										600V		TP1								255								261	1
								32																						6	G6													(ALL 3)
						3										SCR			SCR		SCR				A2			6																																			262	2
						4		GREEN										G1		G3			G5		A1			5		5	G5																					NC			COM								263	3
																1			3			5														OUTPUT SHUNT													255A
																									G3					4	G4
						5		2																				4	J8																	C1						NO											342	4
						6		4																	G6			3		3	G3					(50 MV @800 AMPS)					-
																																																	CR 2
				J17		7		77																	222			2		2	G2								+																								J23
						8						42 31													C			1		1	G1															(+)												346					FOR OPTIONAL
						9		31			32																				THERMAL FAN/									201 202																						PARALLELING KIT
			1			10		76			GREEN	41																			SNUBBER P.C. BOARD															OUTPUT											345
											2		14-PIN																										215
						11		75
	32		2			12		21			4	21	RECEPTACLE
			3			13		41			77	75	(RIGHT)
	GREEN		4			14		42				76	(FRONT VIEW)
	2		5
	4		6															G2		G4		G6	OUTPUT
JUMPER	77		7	J19												SCR			SCR		SCR																						NOTES:
PLUG			8																				RECTIFIER								J20	J6,J11		J4,J8,J13		J7,J10,J12,J14				J3
TO J16	31		9													2			4			6	ASSEMBLY								1	1 2		1	3	1		4	1		5		N.A. LEADS 4 THRU 9 ARE NOT PRESENT ON 380/500V,
	76		10			1																																						AND SINGLE VOLTAGES OVER 345V MACHINES.
	75		11
						2
	21		12					32								A2			A4			A6									2	3 4		4	6	5		8	6		10		N.D. TAPE UP SEPARATELY TO PROVIDE AT LEAST
						3
	41		13
						4		GREEN																																				600V INSULATION.
	42		14																															J1,J9,J15,J16
						5		2																								J2							J5
																																		J17,J18,J19									N.E. PLUG & LEAD ASSEMBLY GOES TO EITHER J12 (OPTIONAL DIGITAL
						6		4																							1		6				1			8
																																		1		7								METERS PC BD.) OR J14 (IN LINE CONNECTOR FOR ANALOG METERS).
				J18		7		77
						8						42																															N.F. LOCATED IN SECONDARY COIL WINDING.
											32
						9		31
											GREEN	31																			7		12	8		14		9			16		N.G. STANDARD 14-PIN RECEPTACLE PLUGS INTO J16 ON STANDARD
						10		76			2	41	14-PIN																		CONNECTOR CAVITY NUMBERING SEQUENCE
						11		75																																				MACHINES AND IS REPLACED BY DUAL FEEDER OPTION IF USED.
						12		21			4	21	RECEPTACLE																		(VIEWED FROM COMPONENT SIDE OF BOARD)
						13		41			77	75	(LEFT)																														N.H. LOCATED ON OUTPUT RECTIFIER FLAT HEAT SINK.
													(FRONT VIEW)
						14		42				76																			ELECTRICAL SYMBOLS PER E1537												N.J. AS SHIPPED ONLY SWITCH #4 IS ON (UP). SEE INSTRUCTION MANUAL.
																																																																11-6-98

G3348-1

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 enclo- sure panels of your machine.

G-2

G3348-1 I-UF

DC 655