Lincoln Electric SVM112-B service manual Schematic Complete Machine, Connector

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G-3	ELECTRICAL DIAGRAMS	G-3
SCHEMATIC - COMPLETE MACHINE

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N67

H121A

C102B

D105A

J31B

A32B

K42B

I32C

L111A(R)

M112A(W)

E77

F76

G75

B

P83

WF1 RECEPTACLE

1

2

3

4

5

6

7

8

20

	RS232	CONTROL
	P81
CONNECTOR
		WIRE FEEDERREMOTE
		WF1
		WF2
	POT.MAX
	POT.WIPER
	POT.MIN
FOOT AMPTROL REMOTE CONTROL	WATER COOLER CONTROL
	24VAC TRIGGER VOLTAGES	ISOLATED DC SUPPLIES FROM POWER BOARD

TRIGGER 24V, 42V, & 115V FROM PROTECTION BD.

ARC & WORK VOLTAGES TO SNUBBER BD.

N167A

H221A

C102D

D

106A

(N.E.) 115V

J

31C

32D

.

A

BD

42V

K

42C

SNUBBERSUPPLIES.BDTODC

SNUBBERFROMVOLTAGESFEEDBACK

I

32E

P82

L

117A(R)

WF2 RECEPTACLE

M

118A(W)

E

277

F

276

G

275

B

SERIAL LOOP COMMUNICATION

FOR WIRE FEEDERS

LCD DISPLAY

111A(R)

112A(W)

117A(R)1J28

118A(W)

4J22TO

#1PLANEGROUND

40mA

40mA

1J27

4J27

4J28

40mA

-15 Va

8J20

208

KEYPAD

TO SNUBBER BOARD

5J20

205

+15 Va TO SNUBBER BOARD

4J20

204

NOISE_GND

ELECT.VOLT.FEEDBACK

3J20

203

1J18

2J18

3J18

4J18

5J18

6J18

7J18

8J18

9J18

10J18

WF1 ARC VOLT.FEEDBACK

2J20

202

WF1 WORK VOLT.FEEDBACK

6J20

206

WF2 ARC VOLT.FEEDBACK

1J20

201

+5 Vb

WF2 WORK VOLT.FEEDBACK

7J20

207

302

1J17

RX

306

7J17

TX

1J14

261

1J26

2J17

5 Vc (RS232)

WF1

+15 Va

9J17

TRIGGER

GND

5V=OPEN

303

GRS232

1.5V=CLOSE

5V

4J17

2J14

262

2J26

307

8J17

+5 Vb

1J19

24V

ISOLATED

FET BANK A

FET BANK A

WF1 TRIGGER

5J14

265

5J26

DRIVER

1J22

221

2J19

CIRCUIT

GATE SIGNAL

WF2

3J19

GD

TRIGGER

4J19

GD

5V=OPEN

+5Vb

1.5V=CLOSE

266

6J26

A

5J19

24V

GD

4J14

40mA

DCISOLATEDSUPPLIES POWERFROM BD.

+5 Va

11J22

224

10J19

6J19

ISOLATED

TRIGGER

CIRCUIT

7J19

WF2 TRIGGER

+15 Va

10J22

223

CIRCUIT

8J19

-15 Va

6J22

226

9J19

SERIAL

6J14

263

3J26

12J22

225

11J19

3J14

264

4J26

12J19

COMM.

40mA

NOISE_GND

13J19

COUPLED TO 1J27

14J19

15J19

COUPLED TO 3J26

40mA

5J22

5R

5R

16J19

FROM 4J28

4J22

5W

5W

40mA

77

4J10

10V

SERIAL LOOP

CURRENT

76

5J10

WIPER

+15 Va

75

1J10

GA

277

3J10

10V

FET BANK B

FET BANK B

276

8J10

WIPER

DRIVER

7J22

227

275

9J10

GATE SIGNAL

GA

294

10V

10J10

A

291

6J10

WIPER

2927J10

		GA
453	1J11	(+) 15 V

4543J11 (-)

455	7J11	PRESSURE	FREQ.MODULATED
				4J23	234
456	8J11		CAP.DIFFERENTIAL VOLT.
					232
				2J23
374	4J12	GA	OUTPUT DISABE	3J23	233
		0V
371	2J12	24V	NOISE_GND
	WHEN WF1 TRIGGER
	OR FOOT AMPTROL
		CLOSE	RECTIFIED CT VOLT. (+)		211
373				1J21
	4J13	0V	RECTIFIED CT VOLT. (-)	5J21	215
372	2J13	24V
	WHEN WF2 TRIGGER
		CLOSE	+15 Va	3J21	213
447	10J16	+15 Vb		6J21	216
448	1J16	+5 Vb	-15 Va	2J21	212
446	9J16	-5 Vb	SHUNT CURRENT	8J21	218
444	6J16	-8 Vb	FROM SHUNT BD.

( 5mA AT 400A WELDING CURRENT)

4497J16

443	2J16	+5 Vc (RS232)	D	A
442	3J16	DISPLAY BD.GND GD GA	NOISE_GND

4458J16 PWR_DN (XIRQ)

300	1J15	(+)	GRS232		6J23
			15V
301	2J15	(-)			5J23
			DISPLAY BOARD	CONTROL BOARD
					235	236
+ -
PIEZO
BUZZER					237
				OUTPUT RECTIFIER	SWITCH BD.
				TSTAT	TSTAT

TO SWITCH BOARDS #3 & #4

RECEPTACLE

GATESIGNALS

42B

10J34

42V,FROM 3J33

RELAYS

31B

8J34

115VAC,FROM 6J33

1J30

32B

12J34

0VAC,FROM 1J33

6J30

FET

WF1

SOFT START

#2

32C

13J34

0VAC,FROM 1J33

125/40

125/40

PLANE

TO

105A

14J34

24VAC WHEN WF1

11J30

102B

11J34

24VAC,FROM 4J33

24VAC

16J30

+18 Vd

1J40

3W

GROUND

RECEPTACLE

TRIGGER CLOSE,TO 4J37

MODERUN

4J32

31C

1J34

115VAC,FROM 6J33

0VAC

6J32

32D

5J34

0VAC,FROM 1J33

42C

3J34

42VAC,FROM 3J33

9J40

3W

WF2

32E

6J34

0VAC,FROM 1J33

3J40

3R

102D

4J34

24VAC,FROM 4J33

TO

11J40

3R

106A

7J34

24VAC WHEN WF2

TRIGGER CLOSE,TO 2J37

6J40

4W

14J40

4W

VA

8J40

4R

16J40

4R

d

3J43

42VAC SUPPLY, FROM PROTECTION BD.

351

1J35

0 VAC,FROM 1J33

1J43

356

6J35

42VAC,FROM 3J33

5J42

FREQ.MODULATED

234

2J39

< 25uS

DIFFERENTIAL CAP.VOLT.

(1250Hz WHEN CAP.BALANCED)

1J31

CAP.VOLTAGE

10J42

+15 Va

SENSING CIRCUIT

10J31

6J42

-15 Va

VA

232

NOISE_GND

3J39

12J31

11J42

+5 Va

50uS

14J31

12J42

a_GND

OUTPUT DISABLE

233

4J39

a

d VB

(OV = RUN

1K

5V = DISABLE)

DEAD TIME

5J44

40mA CURRENT SOURCE

4J44

e_GND

PROTECTION BD.

GND

e

+18 Vd

1J41

1W

.

9J41

1W

BD

2J41

1R

CONTROL

(+)

211

3J36

9J42

10J41

1R

7J41

2W

TO

(-)

215

4J36

15J41

2W

SIGNALS

V B

8J41

2R

361

1J36

(-)

16J41

2R

DISABLEOUTPUT&.VOLT.CAP

CONTROLTO.VOLTCTRECTIFIEDBD. CTFROMVOLTAGEAC

362

2J36

(+)

#2 BOARDS

d

371

1J37

24VAC WHEN WF1 OR

374

4J37

FOOT AMPTROL TRIGGER CLOSE

PWR_DN

445

SWITCH

373

3J37

24VAC WHEN

1J32

8J44

CLOSE

372

2J37

WF2 TRIGGER

+15 Vb

10J44

447

TO

3J32

+5 Vb

11J44

448

SIGNALS

293

2J38

24VAC WHEN FOOT AMPTROL

115V

6J33

CLOSE,TO 4J37

-5 Vb

9J44

446

296

3J38

24VAC FROM 4J33

(N.E.)

-8 Vb

6J44

444

GATEFET

CLOSE

42V

3J33

b_GND

12J44

449

b

+5 Vc

3J44

443

24V

4J33

c_GND

2J44

442

TRIGGERWHEN.BDDISPLAYTO

TRIGGERAMPTROL

0

1J33

POWER BOARD

c

PROTECTION BOARD

ISOLATED DC SUPPLIES,TO DISPLAY BD.

24VAC

FOOT

			U	V	W
	321A	H1B
		321B
ON		H1
OFF	L1A	L3A			TO A SYSTEM GROUND PER
					NATIONAL ELECTRICAL CODE.
		S1			G
	POWER SWITCH				L3A
		L1A	L1	L2	L3
		324
321A		CR1
H1B
		326
T1		T1	T1	T2	T3
T3		T3

324

326TP4

TP5

TP6

AC1

AC2

AC3

INPUT RECTIFIER

POS

NEG

NEG

380-460V

9C

9D

12C

RECONNECT PANEL

208-230V

NEG

9K

9A

9B

12J

9J

12K

12A

12B

12D

12K

9J

(+)CAP3,4

12J

(-)CAP1,2

POS

9K

RECONNECT PANEL

321B

H2

200-208V

F1 5A

220-230V

H3

SLOW BLOW

FUSE

H4

380-415V

H5

440-460V

"A"

TOP

FAN

BOTTOM

FAN

H1

H2

H3

H4

H5

TERMINAL STRIP

1 H1A

H2 H2A

H3 H3A

H4 H4A

H5 H5A

AUXILIARY TRANSFORMER #1

321

1

24VAC SUPPLY

P71

(24V)

H5

6

H5

FOR

(440-460)

PROTECTION BD.

4

323

H4

5

R (115V)

336

6

(380-415)

333

U (42V)

(220-230)

H43

5

H32

32

H2

N (24V)

334

3

(200-208)

33

W

H1

1

H1

2

P70

P73

32A

CB 5A

DC SUPPLIES

FROM CONTROL BD.

FEEDBACK VOLTAGES TO CONTROL BD.

Va15-CONTROLFROMBD.

FEEDBACK.VOLT.ELECT

FEEDBACK.VOLTARCWF1

FEEDBACK.VOLTWORKWF1

FEEDBACK.VOLTARCWF2

FEEDBACK.VOLTWORKWF2

FEEDER RECEPTACLES

SWITCH BOARD #3

Va+15CONTROLFROMBD.

GNDNOISE

FROMVOLTAGESWORKWIRE

(LEFT TOP)

3W

3R

MAIN TRANSFORMER LEFT SIDE

406

R6

25/25

3T

3T

&

9C

9C

204

205

208

203

202

206

201

207

ARC

.047/1200

R10

C3

IND14-D7PARALLEL

3500uF

RECTIFIERASBLY)

10/2

SNUBBER BD.

9J61

6J61

10J61

7J61

8J61

25/25

7.5K/25

.047/1200

1J61

5J61

2J61

450V

4T

R5

12C

FEEDED

4T

13J60

221A

THRU CT

FLYBACK

OUTPUT(ON

0047/400.

GND

DIVIDER

15J60

167A

405

&

9J60

121A

BUFFER

8J60

67

4R

4W

11J60

SNUBBER BOARD

6J62

OUTPUT

320V 160J

320V 160J

RECTIFIER

SWITCH BOARD #4

.047/400

.047/400

(LEFT BOTTOM)

3W

3R

2.7/10

499

10/2

.0047/400

408

D1-D6

.047/1200

R8

IN PARALLEL

2.7/10

25/25

9D

3B

3B

320V 160J

9D

2J62

1J62

4J62

7J62

.047/1200

C4

3500uF

450V

.047/1200

461

MAIN CHOKE

+

4B

12D

4B

ELECTRODE

R7

FEEDED

462

464

25/25

THRU CT

407

4R

4W

R11

40/100

467

SHUNT BOARD

WORK

Va+15

NATIONAL

Va15-

Iout

CODEELECTRICALSHUNTBD.GND

SHUNT BD.

GND

.

3J50

1J50

6J50

4J50

SWITCH BOARD #1

213

216

212

218

(RIGHT TOP)

2W

2R

402

R2

FEEDED

25/25

1T

1T

9A

9A

THRU CT

.047/1200

R9

C1

3500uF

7.5K/25

450V

.047/1200

.BDCONTROLTOCURRENTSHUNT CURRENT)WELDING400AAT5mA=(Io

.BDCONTROLFROMSUPPLIESDC

12A

2T

R1

12A

2T

25/25

401

OUTPUT

1R

1W

RECTIFIER

SWITCH BOARD #2

10/2

.0047/400

(RIGHT BOTTOM)

2W

2R

D15-D20

404

IN PARALLEL

R4

FEEDED

25/25

1B

1B

9B

9B

THRU CT

.047/1200

C2

3500uF

450V

.047/1200

12B 2B

R3

12B

2B

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		294	291	292	293	296
		4J92	1J92	2J92	3J92	6J92
P1
FOOT AMPTROL RECEPTACLE						AUXILIARY TRANSFORMER #2			(N.D.)
						1
D	105B	7J93				(24V)	H5	6	H5A
							(440-460)
E	102C	5J93				4
A	177A	2J93					H4	5	H4A
B	176A	3J93				W
C	175A	4J93					(380-415)
						2
F		(REMOTE)				3 N (24V)			H3A
							(220-230)
		PROTECTION BOARD					H32	32
									H2A
						U (42V)
							(200-208)
						5

DC SUPPLIES TO SHUNT BD.

SHUNT CURRENT FROM SHUNT BD.

453	454	455	456
3J3	4J3	5J3	6J3

WATER COOLER

(N.D.)

5J4

25/25

403

1R 1W

NOTES : N.A. SINCE COMPONENTS OR CIRCUITRY OF A PRINTED CIRCUIT BOARD MAY CHANGE WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY HAVING A COMMON CODE NUMBER.

N.B. D1 THRU D6 OUTPUT DIODES ARE A MATCHED SET. D7 THRU D14 OUTPUT DIODES ARE A MATCHED SET. D15 THRU D20 OUTPUT DIODES ARE A MATCHED SET.

N.C. C1, C2, C3, C4 CAPACITORS ARE A MATCHED SET.

N.D. NOT EXIST ON MACHINE WITHOUT WATER COOLER N.E. NOT EXIST ON PW350 & PW500

MAIN TRANSFORMER RIGHT SIDE

CURRENT TRANSFORMER

4 PRIMARY LEADS 1T,1B,4T,4B

ARE FEEDED THRU CURRENT TRANSFORMER

361 362

ELECTRICAL SYMBOLS PER E1537

Return

Return

	R (115V)	H1	H1A
6		1

P5

2J4

POWER WAVE

MACHINE SCHEMATIC

G 7-21-95E

2990

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

POWER WAVE 450