Lincoln Electric SVM144-B Power MIG 255 208/230V, Wiring Diagram Entire Machine Code 10563 L10979

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G-2	ELECTRICAL DIAGRAMS	G-2
WIRING DIAGRAM - ENTIRE MACHINE - CODE 10563 - (L10979)

POWER MIG 255 (208/230V)

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CAVITY NUMBERING SEQUENCE

(COMPONENT SIDE OF P.C. BOARD)

		1	3	1	4	1	5
J8	1	J6		J1		J4
	2			J9		J7
		4	6	5	8	6	10
1		6		1	7	1	8
J3			J2			J5
7		12		8	14	9	16
			J10			1
				10

GUNJ11**

TRIGGER

1	324	1
2	325	2	325
3		3
4		4	324

GENERAL INFORMATION

ELECTRICAL SYMBOLS PER E1537

COLOR CODE:

B - BLACK

W - WHITE

R - RED

U - BLUE

INDICATES CONNECTOR CAVITY NO.

** CAVITY NUMBERING SEQUENCE

(NON-LEAD SIDE OF CONNECTOR)

2	1	2
J12	J11
	J13
1	3	4

NOTES:

N.A. WELDING CABLE MUST BE OF PROPER CAPACITY FOR THE CURRENT AND DUTY CYCLE OF IMMEDIATE AND FUTURE APPLICATIONS.

N.B. THIS DIAGRAM SHOWS THE "ELECTRODE" POLARITY "POSITIVE". TO CHANGE POLARITY, TURN THE UNIT OFF AND REVERSE LEAD CONNECTIONS AT CABLE CONDUCTOR STRAP AND WORK STUD.

515B

555

206B

B

W

		J10	DISPLAY
			BOARD
		8 7 6 5 4 3 2 1
			552	551	550	515	500
			254A
	R4					R3
256	253	254	251		252
	ARC						390	392
						WIRE FEED
	VOLTAGE					SPEED

GAS

SOLENOID

SNUBBER

BOARD 1 2

352

FAN

MOTOR

353

	J7
265	1
	2
263
262	3
267	4

264 5

2606

7

2618

9

10

FOR TIMER

OPTION

204

208S

CONTROL BOARD

253	1
252	2
251	3
	4
552
	5
551
	6
256
	7
		J2
550	8
254	9

50010

11

12

13

51514

1

2

3

4

5

6J4

7

8

9

10

206B1

W2

3

B	4	J1
515B	5
555	6
325	7
324	8

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				L1	L2
H3	H4	H2	L1	L2
TO SINGLE PHASE
SUPPLY LINE
230V	208V			H1	H4
W
B					H1
	RECONNECT
		PANEL			LINE
G
					SWITCH
					S1

TO GROUND PER

NATIONAL ELECTRICAL

CODE

					R.F.
					CHOKE			**
			354 209R	208R	AS’BLY		J12
	SECONDARY VOLTAGES SHOWN		D2
	ARE NO LOAD RMS VALUES		BAFFLE
			MOUNTED	-			1
	X8	X8	RECTIFIER					B
			DIODE
	116.6V		BRIDGE				2	W
	X9	X9
	X5		+
		X5
	14.2V
	X6	X6
	14.2V		208S
	X7	X7
H1	X1			G1
				SCR 1
	28.4V	204S		SCR HEATSINK
	X2			ASBLY			J13**
H2	X3			SCR 2
	28.4V
	X4			G2	515B	R	1	T
					555	U	2	A
H3			209S
					206B	B	3	C
	POWER						4	H
	TRANSFORMER
			D1

3

4

J95

6

7

8

	320
		320B	325B
	SCR HEATSINK	OUTPUT CHOKE
	ASSEMBLY	THERMOSTAT
W	THERMOSTAT

P.M. MOTOR/

GEARBOX

B

208

208R

204S

209S

209

209R

TO WORK

FOR SPOOL GUN OPTION

390	1	J8
392	2
SCI	1
325A	2
543	3
326	4
541A	5
	6	J3
SCI	7
	8
515	9
206A	10
	11
	12

209	1
208	2
206
	3
206S
	4
205
	5
352	6
	7
X9	8	J5
354	9
325B	10
GND	11
320	12

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					206
			206S	205
			+ -
				206B
C1	C2	C3		R1	15 OHMS
					100 W
+	+	+	C1 THRU C3	204B
			31,000 MFD
			50V
POWER FACTOR					OUTPUT
ENHANCEMENT					CHOKE
CHOKE

207

R.F. FILTER GND

20713

14

353	15
X8	16
G2	1
204	2
G1
	3	J6
X7
	4
X6
	5
X5
	6

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2-23-2001A

L10979

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.

POWER MIG 255