Lincoln Electric SVM162-B service manual Precision TIG 275 Wiring Diagram

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G-4	ELECTRICAL DIAGRAMS	G-4
WIRING DIAGRAM - ENTIRE MACHINE - CODE 10893 (G4031-2)

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CONTROL PANEL (VIEWED FROM REAR)

306	1		1	301
303	2		2
	3	METER	3	304B
	4		4	302

55

66

(VIEWED FROM REAR)

L5

MINIMUM

N.E.

OUTPUT

DISPLAY

R4

304B

314

320

321

316C

316B

315

313B

L6

316C

316B

STICK

BALANCE

313C

LOCAL

MAXIMUM

POST FLOW

OUTPUT

R2

R1

R3

TIG

REMOTE

316A

313A

MODE

319

317

316A

311A

322

316

311A

311

312

318

313

(STICK)

(AUTO BAL)

(REMOTE)

(P. FLOW)

(THERMAL)

301 1

302 2

303 3

304 4

304A 5

306 6

3111

3122

3133

3144

3155

3166

317 7

318 8

319 9

320 10

321 11

322 12

331	W	1
	B	6

415 VOLT CONNECTION

CONNECT STRAP TO

PRECISION TIG 275 WIRING DIAGRAM

HIGH (H4) (AS SHOWN)

380-400 VOLT CONNECTION

L1 (U)

CONNECT STRAP TO

H1

MID (H3)

220-230 VOLT CONNECTION

L2 (V)

S1

CONNECT STRAP TO

POWER SWITCH

LOW (H2)

PROTECTIVE BONDING CIRCUIT

220 VAC

220VAC

RECEPT.

H4

H3

H2

51

RECONNECT PANEL SUPPORT

L1 (U)

A

C1

CB2

GND1

GND-H

GND-H2

GND4

GND5

GND6

50

L1A

MID

250

5A

52

BYPASS

HIGH

LOW

CONTROL PC BOARD

PC BOARD

251

50A

L2A

CONTROL

CASE

T1

TO GROUND PER

CASE

115 VAC

GAS

C2

H1

PANEL

FRONT

TRANS.

NATIONAL

BACK

RECEPT.

VALVE

L2 (V)

COM

FOOT

ELECTRIC CODE

POWER FACTOR

GROUND

RECONNECT PANEL

CAPACITORS

X5

267

(OPTIONAL)

S

J8

H2 (220V)

F

63.5VAC

X6

268

H3 (380V)

X3

231

J6

1

W 221

TO GROUND PER

H4 (415V)

S

2

R 222

NATIONAL

250

H5 (440V)

115VAC

231A

L4

ELECTRICAL CODE

201

X9

S

216

X4

232

X1

18VAC

204

105VAC

F

X10

F

X14

52

SCR1

J9

L12

S

X1

G1

(+)

222

221

X7

W209

S

1

G1

78VAC

218

POS

2

G3

R W

R210

20VAC

X8

F

F

3

G2

X2

G4

4

SCR2

T1

J4

5

G2

L1

POLARITY SWITCH MICRO SWITCH

6

217

7

220

AC

A-C, D-E, B-F

OPEN

8

DC+ B-D, C-E, A-F, G-H

CLOSED

9

218

217

FRONT GANG

DC- B-D, A-E, C-F, G-H

CLOSED

232

10

216

115VAC

REAR GANG

MICRO-SWITCH

B

D

D2

CB1

C8

C9

G3

H

S2A NO

15A

SCR3

E

A

NC

233

233B

231

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F G

+ R -

B W

331

FREQ

+	G -	+	G -	+ G	-
B	W	B	W	B	W
	332		333	334
	ADVANCED CONTROL PANEL
		(OPTIONAL)
	ON TIME		BACKGROUND

+	Y	-
B		W
	335

DOWN SLOPE

L7

332	W	2
	B	7
333	W	3
	B	8
334	W	4
	B	9
335	W	5
	B	10

1

3

2

5

4

6

												220				C				NEG				266A						4	8
													)-(																233A
J10												220A		D1		POS	B		286				265A		0	CR4	1					50A
													SCR4					X2
																														2	6
												G4																262	CR4
										1	252															263					234
																							265	266
										9	253						S2
																															N.F.	SV2
										2	269			NEG			POLARITY		253		(REAR VIEW, SHOWN											WATER VALVE
										10	270				252		SWITCH															(OPTIONAL)
																					IN AC POSITION)
			N.D.							3	271
								N.C.		11	220B
J7										6	265																		C1,C2		POWER FACTOR CAPACITORS, 50/460 (OPTIONAL)
				J3					J11	12	266																		C4,C5		BY-PASS CAPACITORS, .0047
										5	262										R7	271A	BACKGROUND						C6		HIGH VOLTAGE CAPACITOR, .0015/12kV
																							RECTIFIER						C7		PHASE SHIFT CAPACITOR, 15uF/250VAC
1	2	3	4	5	6	7	8	9 10		13	263
																							269	R8	267				C8,C9		HIGH FREQ PROTECTION CAPACITORS, .22/400
										4	213
																						271							CB1		CIRCUIT BREAKER, 15 AMP
										14	214														268

	R9			R10			R11			R12
				401C
401B	402	403		401D	405	406	408	409	410	407	401D
4-STEP				401B	ON			(PULSE ON)
			401A				404
411		401						-	G +	B
							W
2-STEP				OFF
TRIGGER				PULSE

						PROTECTION PCB
	A	A
	B	B						1
	C	C		A	4			2
	D	D	L8	B	1			3
				C	2	J22	J23	4
10K A-B	E	E
				D	3			5
AT MINIMUM	F	F		E	6			7
OPTIONAL				F	5			6
		REMOTE						8
REMOTE
		RECEPTACLE
AMPTROLTM

L10

1

2

3

4

5

7

6

8

L9

1

2

3

4

N.A. 5 7

6

8

OR

N.C.

7

CB2

CIRCUIT BREAKER, 5 AMP

201

262

CR4

12V DC RELAY COIL

J3

L13

15

204

270

263

D1

FREE WHEELING DIODE

8

W209

201

D2

BACKGROUND DIODE

1 2

3

4

5

6

7

8

9

10

L1

OUTPUT INDUCTOR (CHOKE)

16

R210

204

220B

L2,L3

HIGH FREQ INDUCTORS

W209

L4 -L13

RF TOROID CHOKES

220A

R210

R1

OUTPUT CONTROL POTENTIOMETER, 10K

401

1

TIG OPTION PCB

R2

BALANCE CONTROL POTENTIOMETER, 10K

402

2

(OPTIONAL)

R3

POST FLOW POTENTIOMETER, 10K

403

3

R4

MIN OUTPUT POTENTIOMETER, 10K

404

4

R5

PHASE SHIFT RESISTOR, 200/100

405

5

R6

HOLDING RESISTOR, 50/225

406

6

214

R7

RESISTOR, 20/100

407

7

S

408

8

FAN

R8

RESISTOR, 5/50

409

9

213

R9

FREQ CONTROL POTENTIOMETER, 10K

410

10

233A 231A

C

R10

ON TIME CONTROL POTENTIOMETER, 10K

411

11

TRANSFORMER

R11

BACKGROUND POTENTIOMETER, 10K

W

12

231E

BYPASS/

PRIMARY

TRANSFORMER

R12

DOWN SLOPE POTENTIOMETER, 10K

J1

THERMOSTAT

S1

INPUT POWER SWITCH

260

STABILIZER

SECONDARY

PC BOARD

THERMOSTAT

S2

POLARITY SWITCH

233A

S2A

MICROSWITCH ON POLARITY SWITCH

1 2

3

4 5

6

7

8

9 10

SCR1,2,3,4

MAIN POWER SCR'S

J2

GAS VALVE

SV1

SV1

GAS SOLENOID VALVE, 115VAC

235

233A

SV2

WATER SOLENOID VALVE, 115VAC (OPTIONAL)

T1

MAIN TRANSFORMER

J5A

231D

231E

231A

T2

HIGH VOLTAGE TRANSFORMER

E

F

T3

HIGH FREQ TRANSFORMER

L11

N.B.

LEAD COLORING CODE:

COMPONENT VALUE

UNITS:

N.A. CONNECTION IS PIN TO PIN BETWEEN J23 AND J5.

B-BLACK

U-BLUE

L2

238

C6

RESISTORS:

S

N.B. ROBOTIC INTERFACE CONNECTION.

G-GREEN

W-WHITE

OHMS/WATTS

1

115VAC

T3

R6

N.C. REMOVE JUMPER PLUG IN J3 WHEN INSTALLING

O-ORANGE

Y-YELLOW

CAPACITORS:

2

260

T2

SPARK

R-RED

MFD/VOLTS

J12

3

235

GAP

TIG OPTION PC BOARD.

CONNECTOR PIN NUMBERS:

5

236

N.D. DISCONNECT JUMPER LEAD BETWEEN PIN 1 AND

6

284

285

EXAMPLE: THIS IS PIN 7

PIN 2 IN J3 TO DOUBLE PREFLOW & POSTFLOW TIMES.

4

233A

1 2 3

J5

L3

239

7 0F CONNECTOR J5

F

N.E. DISPLAY TOGGLE SHOWN IN MIN AMP POSITION.

237

N.F. PLUGS INTO LOWER SWITCHED RECEPTACLE.

8

14

1 2 3

8

236

FRONT

WORK

J5

LATCH

R5

C7

ELECTRODE

ARC STARTER AS'BLY

VIEW OF CONNECTOR ON PC BOARD

ELECTRICAL SYMBOLS PER E1537.

REAR

236B

ELECTRODE

B

G4031-2

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.

®

PRECISION TIG 275