Lincoln Electric SVM129-B Schematic Control PC Board Codes 10151 11092 G2781 Sheet 1, X20 X32

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G-6

ELECTRICAL DIAGRAMS

G-6

Schematic - Control PC Board - Codes 10151 - 11092 - (G2781 Sheet 1 of 2)

A-1782

G

+15V

+15V

+15V

+15V

POWER PLANE

POWER PLANE

POWER PLANE

13

14

16

16

16

16

4

4

14

14

14

14

14

14

14

14

14

14

14

14

14

3

4

4

Vcc

8

Vcc

8

C439

X25

C442

C445

C432

C444

C425

C429

0.1

X19

C441

X20

X32

C456

C443

C466

C467

X11

X12

C433

X13

C434

X14

C435

X15

C436

X16

C437

X17

X18

C438

X36

C468

C426

C459

C427

C428

C458

OCI2

OCI3

C424

0.1

X9

X10

0.1

X34

X35

0.1

0.1

X21

0.1

X22

X31

C457

X30

X23

X24

X29

0.1

PWM

50V

DUAL FF

0.1

COUNTER

COUNTER

0.1

0.1

0.1

0.1

NAND

NAND

0.1

NAND

0.1

NAND

0.1

NAND

0.1

AND

0.1

NAND

NAND

0.1

NAND

0.1

0.1

0.1

0.1

0.1

0.1

0.1

50V

IMERT

TIMER

50V

OP AMP

OP AMP

50V

50V

SWITCH

50V

SWITCH

SWITCH

0.1

SWITCH

COMPARATOR

OP AMP

OP AMP

50V

C440

MC14013B

50V

MC14040

MC14040

50V

50V

50V

50V

4093B

4093B

50V

4093B

50V

4093B

50V

4093B

50V

4093B

50V

4093B

4093B

50V

4093B

50V

50V

50V

50V

50V

50V

HP2231

HP2231

50V

SG3846

4.7

MC14538B

MC14538B

LM224

LT1014

4066B

4066B

4066B

50V

4066B

LM2901

LT1014

LM224

12

35V

7

8

8

8

8

11

11

7

7

7

7

7

7

7

7

7

7

7

7

7

12

11

11

GND 5

GND 5

GROUND PLANE

GROUND PLANE

GROUND PLANE

J27

2.67K

2.67K

2.67K

2.67K

LOCAL

+15V

+15V

DV/DT KILLER

+15V

+15V

1

Q12

VDD

16

+15V

1

R543

R542

R541

R508

6

4.75K

FORCES THIRD CONSECUTIVE

4.75K

2

Q6

Q11

15

REPETITIOUS

X20

+15V

X34 B

7

R340

PINCH TO BREAK INTO ARC

"DIGITAL LOGIC"

R319

3

Q5

Q10

14

R527

5

B

R308

3.92K

PINCH LIMITER

OCI1

4

Q7

DARLINGTON

Q8

13

R326 511

5

12

+15V POWER SUPPLY FOR

D310

LM224

METER_1

4

B

DV/DT LEVEL DETECT

OCI2

1

A

PINCH

Q4

Q9

DIGITAL, TRIGGER & ANALOG SECTIONS

POWER PLANE

+15V

10.0K

R488

825 R486

825 R487

825 R482

OCI1

6

PINCH SIGNAL

ON TIME

825

PINCH KILLER Varc

FROM FE (SHEET 2)

DV/DT

1

Q12

VDD

16

ARC

TO FE (SHEET 2)

DON_MIN

6

Q3

R

11

8

X8

+5.1V

REMOTE

7

/C

10

METER_2

ADJUST FE (SHEET 2)

HP2231

2

Q11

15

FOR ENERGY

Q2

COUNTER

J28

D306

D307

lm350

HP2231

Q6

X32

PINCH

/ARC

CONTROL OPTION

R341

15.0K

8

Q1

9

D304

1N4007

1N4007

IN

OUT

D413

2

1

43K.2

R483

+5 VOLT

R333

R309

33.2K

3

Q5

Q10

14

HP2231

5

VSS

9

NAND

ON

R337

10.0

2N4401

6

Q3

R 11

/DON_MIN

C

/COUNT

s18395-23

R528

10.0

METER

3

4

13

2

1

J28

10.0K

X34 A

1

POWER

Q7

Q8

Q9

6

X15

8

J28

OPTO

ADJ

3 LM224

R474

R484

PINCH

5

12

C306 R317 2.21K

2N4401

4

R327 511

ISOLATOR

7

1400V

1000

R338 43K.2

00M.1 R511

35V

35V

Q3

NAND

VSS

Q1

NAND D

/PWM_SYNC

12

NAND

PWM_SYNC

RESETDON

Q4

Q9

/PINCH

NAND

B

C310

C312

C311

243

C462

DZ19

C448

X26

8

10.0K

D305

11

X17

D

13

7

10

13

X15

10

DARL. DRIVE

18 VAC

1

Q2

COUNTER

/C

12

35V

1.0

12V

C463

1.0

2.5V

NAND

+15V

X15

BOARD

.0047

1W

TL431

REF

3

X13

D

12

8

9

D

MC14040

J28

C313

C314

6

2.21K

R473

+15V

+15V

BALL

BALL_OR_FUSE

9

2

D

X16

12

/KILLER

330p

13

X14

11

11

14

100

FROM FE (SHEET 2)

7

R300

ARC

5

7

R304

100KCW

X11

10

KILLER 11

NAND

13

15

14

10K 100K

R312 R313

BALL OR FUSE

100V

330p

R321

2K.56

1.00K

C309

Q2

DZ8

R342 100

20V

375us

B

X9

/Q

/KILLER

8

NAND D

KILL_START

9

10K

2

D309

500

4.75K

1

X14

BALL_OR_FUSE

NAND

A

R325

2N4401

SS_WIRE

D308

R339

92K

C302

X14

C

10

R320

X15

3

1N4007

1N4007

R301

R302

750us

CW

2

A

3

8

NAND

1

10.0K

CW

50K

CW

R305

NAND

D301

D420

.

C300

FUSE GEN.

3

/PB_LOCAL

/PB_OPTION

GROUND PLANE

/BALL

D300

4.75K

FUSE

1N4936

1N4936

KILL_RC

H = STAINLESS

CURRENT

1

2

6

X11

C

4

/KILLER

1ms

C304

R318

L = MILD

T1

A

T

2

4.75K

D303

INTEGRATOR

ARC/SHORT DETECT

OCI2

A

10.0K

4

A

Q

6

5

NAND

C305

R345

1N4936

13

D412

47.5K

DZ20

DZ9

R540

/KILLER

X12

D

10 11

B

X9

/Q

9

5

P_BOOST ONLY AFTER

100V

0.1

1

2

1.0

21K.2

R343

21K.2 R344

15V

10V

10V

RST

T1

B

T2

C308

CFB

HP2231

3

DV/DT

9

12

A

Q

10

X31

A

35V

1W

R519

1W

C464

1W

8

NAND

NAND

4

PINCH LATCH

50V

+15V

/RESET

FUSE

RST

6

B

1.3 msec PLASMA

BALL_DELAYED

X14

1N914

OVERCURRENT TRIP

+15V

/KILLER

1

13

6

68.1K

.33

OVERCURRENT

+5.1V

/RESET

5.62K

X11 B

NANDX12 A

11

NANDX12 C

4

START

13

/BALL

BOOST TIME LIMIT

200V

3

12

1

X12

3

5

ARC_START

CURRENT

1

J1

R513

2

X35 A

D411

OUTPUT DISABLE

ARC

R303

/BALL_RC

2

NAND

/ARC

NAND B

FUSE_RESET

PINCH

1

X19

14

6

X16

PB_START

C307

R323

R328

+15V

2N4403

C301

/BALL_DELAYED

2

/(BALL & SHORT)

Q1

VDD

B

4

4.75K

CW 10K

1

R509

SENSE

1 R467

+15V

1014

R518

2K.33

+15V

A

Q7

10.0K

R561

332K

10.0K R563

/ARC

100p

RESET

/RESET

RESET

/PINCH

2

/Q1

Q2

13

5 NAND

X16

T1

0.1

/PB_LOCAL

P BOOST

2

+15V

2

NAND

3

( SHEET 2 )

ARC

13

100V

2

NAND

A

3

4

CLOCK 1

/Q2

11

8

1

A

3

12

T2

10

X

36

OVERCURRENT FAULT

1

X17

3

12

NAND

3

1

10.0K

TO TRIGGER CIRCUIT

2

15

14

50V

BOARD

PULSE

J1

D416

CR1

R562

12

NAND A

X13

4

5

CLOCK 2

10

X16

C

10

11

X10

9

5

B

9

2

R466

X11

11

6

RESET 1

NAND

A

B

Q

3

+ t

10.0

C423

1N4936

12Vdc

C475

D423

5

NAND

C

D1

RESET 2

9

+15V

R557

B

/Q

+15V

X18

4

X18 C

10

.25

1.0

SET 1

D2

9

/PWM_SYNC

RST

J1

35V

221K

R521

2700p

11

1N914

9

+5.1V

+15V

R314

6

4.75K

6

8

X35

B

2K.33

R516

R524

100K

2901

D

4.75K

C303

NAND B

10

MC14013B

UNTIL

ARC STARTS

J1

10K

R322

4

6

50V

X28

13

+15V

/RESET

X13

7

VSS

SET 2

8

KEEP IN P_BOOST

13

/PB_OPTION

CURRENT FEEDBACK

1014

7

150K

R512

R559

10

150us FUSE ENTRY

/ARC

12

NAND

A

11

R306

8

4.75K

R331

10.0K

3V

5

10

75.0

R334

X13

R329

ARC KILLER PULSE

13

4.75K

H = A>100

1K68.

R514

332K

2K33.

R517

FUSE

1N914

R560

5K82.

PB_START SIGNAL

OCI6

2K56.

R307

1N4936

2K39. R311

X17

L= NO OPTION

10.0K

1V/100A

5V

+15V

X35

8

D424

1

330p

D302

AMPS>100

6

X17

V=ARC

START_RESET

92K3.

L=DISABLE LOCAL PB TIME

R522

C

100V

1V

10

4

A

9

1014

PB_START

10K

8

NAND C

5

NAND B

OCI3

H= OPTION ENABLED

15.0

R515

TO FE (SHEET 2)

A

R316

13

X35

9

7

R324

1

J3

X36

4

150K

C465

R409

R410

9

8

FOR ENERGY

Q10

R335

0K.15

ENERGY CONTROL OPTION

R330

0K.10

TIMEPBOPTIONL=

R556

75K.4

R523

D410

/PINCH

D

14

+5.1V

4

X23

CONTROL OPTION

1014

ENABLE (SHEET 2)

+15V

TRIP TIMING

HP2231

( SHEET 2 )

CFB

R310

12

HP2231

ARC_START

5

2901

2

OVERCURRENT

R525

6

2

PRI_FB

1V=100A

10.0K

ARC

+15V

DISABLE OPTION TO START

D421

R526

SLOW RAMP

100A/ms

1N4936

6

10.0K

100

/HOT_START

+ t

C412

5

NAND

B

R510

39

47.5K

15.0K

B

X21

2N4401

+5.1V

R332

3.92K

D422

L=DISABLE OPTION PB TIME

56

1.0

Q8

20V

10.0K R564

OCI3

B

H= OPTION PB TIME

1N4936

13

11

35V

1000A/ms

0K.10

R551

PINCH

Q4

R554

ENERGY CONTROL OPTION

X18 D

WIRE SIZE SELECT

2N4401

6

L= LOCAL PB TIME

H= OPTION PB TIME

12

FAST RAMP

15.0K

P_BOOST TIME (SHEET 2)

< .035 DIA WIRE

H= .045

X22 B

RAMP

2N4401

C

419

3.1V

4

-

L= .035

8

9

R411

C407

PINCH

( SHEET 2 )

15.0K

1.8

HP2231

HP2231

4

J3

R405

6.81K

.0047

PWM_EN

C472

20V

5

2

24.3K

R553

C474

6

R453

1K.22 R555

V+

Vref

C409

DZ12

50V

100V

> .045 DIA WIRE

100

6

V-

CLIM

1

100p

-

1.0

R418

2.21K

R417

2.21K

15V

FASTPINCHRAMP ENABLE

R412

13

3

X25

15

J28

PHB OUTPUT

B

OCI6

35V

9

I-

Vin

+15V

3

SS_WIRE

10 VDC

+15V

2901

9

PINCHCOMMAND

47p

100V

R423 267K

3us MAX DEADTIME

6

2901

B

R457

R456

01K.3

01.0

W1

92K.3

R461

92K.3

R463

W4

1W

10K

2

10

X24

1

100K R552

WIRE TYPE SELECT

R413

10

1014 C

8

PINCH

A

X21

R422

C473

10

SYNC

Vc

13

OUTA

OUTB

/PWM_SYNC

+15V_REM

3

MILD

200

.294V

B.PT

8

CT

PWM

11

10K

+15V

J28

+15V

3

J3

+15V

+15V

12

SAWTOOTH

C418

7

COMP

OUTB

14

R455

+15V

WIRE TYPE POSITION

R414

C410

WAVEFORM

16

TO FE (SHEET 2)

8

11

10

.018

9

RT

SHUT

7

STAINLESS

+15V

10K

GENERATOR

3.92K

FOR ENERGY CONTROL

50V

SG3846

14

X23

B

X21

PHA OUTPUT

C

X23

1

3.01K

R454

J28

OPTION

R504

R505

1.30K

R506 1.30K

R400

1.30K R401 1.30K

CONTROL

13

D X23

8.25K

100K

BREAKPOINTPINCH

KNEE)(PINCH

R419

X24

1

3.32K

1.00K

67K.2

R452

R451

7K.26

10.0K

475

R458

D405

7

01.0

2W 01.0

W3

REMOTE_POTS

POTS

R550

500A MAX

R421

R424

R425

R427

+5.1V

START_RESET

0.01

J28

6

15.0K

PINCH LIMIT

Verror

PWM_EN

1

75.0

POWER

47.5K

475K

100K

1N4936

CW

1

0K

1.00K

(SHEET 2)

10

R530

R471

2

+15V

R428

R529

HP2231

OCI4

A

REM +15V_REM

C460

DZ18

C461

C401

2901

COMMAND

1014

A

R426

R539

100K

R459

1W

R402

75.0

1

R502

75K.4

11 PINCH COMMAND

R415

R416

3

A

OCI4

HP2231

8

35V

10.0K

1.0

12V

R420

Vcc

TO

LOCAL_POTS

X33

"ANALOG LOGIC"

47.5K

X31

D

100K

47.5K

OCI4

C430

1.0

8

2.5V

CW

1us MIN PULSEWIDTH

.0047

4

2

0.1

C400

CURRENT

R429

C422

POWER

TL431

REF

10

12

11

500

RAMP

+15V

50V

HP2231

OCI4

B

HP2231

50V

10.0 R500

35V

6

R503

1.50K

ERROR AMP

6

BOARD

R501

0.10

COMMAND

/ARC

+15V

10K

R441

CW

B

OCI4

HP2231

ISOLATED

GND 5

R532

REM

J27

J2

+15V

P_BOOST COMMAND

C471

3

CIRCUIT

PB_SCALED

1.00K

REMOTE PB POT

9

15

330p

9

LOCAL PB POT

6

X36

D418

CW

CW

D400

X31

7

10

D419

D417

1

J27

B

X24

NAND C

J2

9

X22

A

10.0K

8

R538R446

R439

A

LOCAL

C406

5

R443

X30

A

50V

NAND

D

CTRL/RAMP&ARC

COMMAND

CTRLRAMPOR/ARC

1K.22 R499

100K

2K.56

50V

B

OCI5

TO FRONT END

J2

+VIN

2

16

R403

1014 B

120us

OCI5

DZ10

3

4

13

15.0K

X34 C

8

5

D402

100V

7K26.

0K15.

100 R507

10.0K

1.00M

R533

D409

R408 17.8K

1

2

R444

0.1

R449

R450

R448 00M.1

R447

R442 C415

3

P BOOST

00K.1

R436

1

-PWR

GROUNDBACKMETER

J2

7K.13

10K

J27

10K

J2

12V

5

X34

D

14

R407

10

LM224

/HOT_START

13

R537

330p

RAMP IN

PWM OUTPUT

METER_2

J2

10

10

R404

1.0

12

LM224

P BOOST

13

C417

BACKGROUND COMMAND

/RAMP

4.75K

100V

C414

4

HP2231

2

+PWR

C402

100

35V

C403

1

2

2700p

13

X36

11

.0047

RAMP /RAMP

2

100

500K

J2

82.5K

12

5

12

( SHEET 2 )

R437

R433

13

TAIL OUT

R490

DURING HOT START

13

X24

D403

ARC

4

3

10

11

+1.42V

T1

T2

0.1

+15V

CW

J2

267K

10.0K

D

4

A

A

Q

6

HP2231

50V

J2

11

R445

1014

14

B

X21

X22

D

P BOOST

5

B X10

/Q

7

4

-VIN

SHORT OR 500K POT

+15V

12

3

C450

100K

RST

+15V

J2

1.00M

2.67K

2.67K

2.67K

2.67K

X31

C

7

R434

LOCAL_POTS

50V

"KEEP ALIVE"

R468

OUTA

OUTB

R546

R545

R544

R406

POT

D414

8

9

10.0

4.75K

METER_1

J2

CURRENT LEVEL

10K

J2

+PWR

LOCALBG

9

DZ11

6

3SEC

62K.5

R472

C446

1.00M

R469

C404

ARC_START

14

R435

R534

00M.1

DZ16

6

20.0K

R440

100

50V

METERBOOST

1.0

12V

CW

10.0K

C452

+

15V

PB_SCALED

332

10.0K

100

35V

1W

C405

REMOTE

J2

1.0

12V

C416

J2

+VIN

35V

1W

X30

C

3

R491

C454

820p

R430

R431

R470

12

100

8

9

R498

50V

C411

+15V

0.1

9

100

1.0

35V

HOT_START

+15V

2

X30

X29

8

J2

-VIN

PLASMA OCI7

STARTHOT TIME

R476 00M.1

HOT START

R475

10.0K

OTEREMBG POT

00M.1

R520

R494

6.81K

R477 100

D407

B

LM224 C

SCALED_BGND

00K.1

R432

8

R- 165, 242, 345, 564

2

J3

R489

5

R492

LM224

A

1

R497

3

4

10

J27

X29

CW

10.0

REMOTE_POTS

D415

LOCAL

3

150K

J2

5

J3

R478

12

10K

J27

X30

D

11% BACKGROUND INCREASE

C453

6

-PWR

10K

10.0K

C447

DZ15

C449

X29 D

14 D408

CW

6

R549

R548

R547

R495

DZ17

10

11

J3

12V

LM224

2.67K

2.67K

2.67K

2.67K

C451

C455

HOT_START

R496

1

2

Input- Current

6

1.0

1W

13

J27

1.0

12V

12

3

4

Feedback

35V

1W

100K

OFF

+15V

/HOT_START

7

R493

35V

GENERAL INFORMATION

100

REMOTE

J1

FILE:

G2781_1D1

LAST NO. USED

DZ20

TIMING

6

PINCH RAIL

P_BOOST

1

5

Remote

1

8

Analog Logic I/O

ELECTRICAL SYMBOLS PER E1537

C- 129, 211, 314, 475

X36

CAPACITORS =

MFD ( .022/50V

UNLESS OTHERWISE SPECIFIED)

GENERATOR

6

10

9

16

LABELS

Q10

D406

R480

100K

X29

B

7

PINCH SLOW RAMP

Control

to Control Panel

RESISTORS = Ohms (

1/4W

UNLESS OTHERWISE SPECIFIED)

D- 117, 211, 310, 424

J27

J2

DIODES =

1A, 400V

(UNLESS OTHERWISE SPECIFIED)

W4

5

LM224

Unused Devices

SUPPLY VOLTAGE NET

Q6

R481

J28

J28

PINCH KNEE

Darlington

1

3

Analog Logic I/O

REFERENCE DESIGNATOR SERIES DEFINITIONS

POWER SUPPLY SOURCE POINT

+5.1V

13

5

1

7

ARC_START

1

2N4401

100

J28

J28

8

Drive- Output

4

6

to Control Panel

100 SERIES- ARC SENSE CIRCUIT

(SHEET 2)

COMMON CONNECTION

X18

C469

R536

12

4

14

3

Vac In

200 SERIES- TRIGGER CIRCUIT

(SHEET 2)

NAND A

R485

39

10.0K

9

J28

2

J28

PINCH FAST RAMP

J28

J3

FRAME CONNECTION

2

300 SERIES- DIGITAL LOGIC CIRCUIT

(SHEET 1)

33.2K

20V

BACKGND

TAILOUT

BACKGND

NOTES :

400 SERIES- ANALOG LOGIC CIRCUIT

(SHEET 1)

EARTH GROUND CONNECTION

8

J27

X22

EQUIP.

J27

RAMP

Ch'ge.Sht.No.

STT CONTROL

4

3

N.A.

SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE

UNLESS OTHERWISE SPECIFIED TOLERANCE

THE LINCOLN ELECTRIC CO.

4

BALL

FUSE

TYPE

R479

562

3

J27

5

KEEP_ALIVE LEVEL

KEEP_ALIVE LEVEL

WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD, THIS DIAGRAM MAY

ON HOLES SIZES PER E-2056

5-19-95

CLEVELAND, OHIO U.S.A.

SCHEMATIC

(Sheet 1 of 2)

NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE

ON 2 PLACE DECIMALS IS + .O2

SUBJECT

NUMBER.

ON 3 PLACE DECIMALS IS + .OO2

5-24-96E

ON ALL ANGLES IS + .5 OF A DEGREE

SCALE

NONE

SHT.

COMMAND SIGNAL

G 2781-A

MATERIAL TOLERANCE ("t") TO AGREE

DR.

MLD

DATE

04/12/94

CHK.

SUP'S'D'G.

NO.

WITH PUBLISHED STANDARDS

NOTE:

Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board Components are not available from Lincoln Electric. This information is provided

INVERTEC STT & STT II

for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.