Lincoln Electric SVM146-A Schematic Control PC Board, Cutting Current Setpoint Local

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G-3 ELECTRICAL DIAGRAMS G-3

SCHEMATIC - CONTROL PC BOARD

+15V

Vct = 0.01 Ip

+15V

J4

+15V

CUTTING CURRENT

3

SETPOINT

LOCAL

X10

C56

D15

D16

R125

R127

R142

C32

10.0

R22

10.0

10.0

D10

J2

1N4936

1N4936

10.0

C42

C50

5

0.1

TCF6000

.15

C57

Vin + Vc

3A

6

J4

100V

1.0

C54

C55

0.1

4.7

X13

4

50V

40V

MAX

100K

10.0K

R138

R139

50V

35V

OUT

GATE DRIVE

D

4.75K

3

6

35V

3

CONTROL_POT

1.0

COM

PULSE XFMR

CUTTING

I

J2

R45

R47

PRIMARY

CURRENT

D17

D18

35V

COM

GND

2

3

CONTROL

S

8

INV IN

J5

POT

C21

XFORMER

COM

D11

MIN

P

C23

1N4936

1N4936

1.0

125:1

267

N.I. IN

1

COM

3A

L

35V

40V

10K

A

J2

+5.5V

R49

100K

26.7

R120

26.7

26.7

R123

26.7

10.0

R20

10.0

R124

10.0

R126

10.0

R128

R129

2.21K

15

VIN

AOUT

11

10.0K R140

s1501819k1-

R121

D12

Y

9

R122

4

14

COM

CS+

BOUT

R141

3A

COM

7

10

40V

+15V

10.0K

C59

COMP

X12

SYNC

267

1

COM

X10

C27

6

13

N.I. IN

R154

R65

2.21K

R130 4.75K

R131

12.1K

100p

EA-

Vc

X14

R535.11K

330p

4

TCF6000

100V

8

12

OUT

7

100V

12

CT

GND

-19k1

5

J5

R152

R155

TCF6000

DZ1

Vin + Vc

J2

100

2

/PURGE

COM

14

X2

C60

V_PWM

5

2

SHORT = TRIGGER ON

20.0K

221K

X10

EA+

VREF

12V

INV IN

2

C33

D13

5

R52

+5.5V

33074A

.018

16

1

1W

DZ2

s15018

3A

OPEN = TRIGGER OFF

R76

COM

C58

13

50V

SHUTDOWN

CL SS

3

0.1

40V

PURGE

C26

3.74K

D25

10.0K

4

3

C61

12V

GND

50V

B

0.1

9

RT

CS-

R134

10.0K

PUSHBUTTON

1.0

TRIGGER CIRCUIT

3

X3

C12

1.8

1W

O

R156

50V

UC2856N

35V

+5.5V

OPTOCOUPLER

.018

20V

A

J3

R153

LM224

1

50V

COM

R

COM

11

2

R195

R113

D

100K

1.50K

1.00K

COM

R187

TCF6000

C39

TRIGGER ON = H

5.11K

R157

+5.5V

3

2.67K

C62

5.11K

TRIGGER OFF = L

8.000MHz

15.0K

R135

R55

X10

R31

1.00M

Y1

4.75K

R112

1

1.0

3.32K

35V

J2

100

5

R137

Q5

2

/SAFETY_RESET

Vdd

+15V

C46

2N4403

3

R54

COM

COM

X11

RES

NOTE:

COM

825

RESET

C52

10p

Shutdown Condition:

CW

C48

90 Amps = 0.25V

R102

PUSHBUTTON

C28

100V

S-8054HN

10K

10p

R114

126 Amps = 0.35V

R132

R133

3.32K

1.0

+5.5V

5.62K

330p

100V

Vss

35V

COM

100V

3.74K

Q1

R99

10.0K

2N4401

COM

+15V

R165

10.0K

COM

+5.5V

COM

4.75K

47.5K

R11

332

R166

R136

4.75K

R87

9

COM

R12

R167

TCF6000

R44

1

Vss

VRH

52

C14

D19

J3

X10

332

221K

4.75K

R43

2

MODB

R/W

6

COM

COM

R170

332

R13

6

19

/IRQ

VRL

51

4.75K

OPTOCOUPLER

12

18

5

R14

X3

/XIRQ

E

+15V

AIR SOLENOID

332

R17

COM

825

THERMOSTAT(S)

J4

LM224

14

8

XTAL

/RESET

17

R164

10.0K

1

13

7

EXTAL

X5

PA4

30

/OUTPUT

R29

-15V

10.0K

R19

5.11K

TRIGGER

SHORT = TEMP OK = H

R178

10

PC1

PA5

29

AIR_SOLENOID

AIR_SOLENOID

3.74K

+5.5V

J4

C13

OPEN = OVERTEMP = L

16

28

PILOT_SWITCH

PILOT_SWITCH

Q2

4

COM

10.0K

THERMOSTAT OK

14

PC7

PA6

35

ELECTRODE_SOLENOID

ELECTRODE_SOLENOID

R58

2N4401

PC5

PB7

COM

COM

CONTROL_POT

47

PE2

PA7

27

PRIMARY_POWER

47.5K

TCF6000

/PURGE

R67

12

42

READY

3

PSI

R575.11K

X10

PC3

PB0

/SAFETY_RESET

J3

SAFETY

D22

100

9

PC0

PB1

41

J3

7

/PSI_OK

/PSI_OK

AIR_LOW

13

PC4

PB3

39

COM

R56

R171

6

PRIMARY VOLTAGE

C30

43

38

THERMAL

OPTOCOUPLER

PRESSURE SWITCH

J3

PE0

PB4

4.75K

1.0

SENSE_AMPS

49

44

+15V

IGBT DRIVE

2

PE3

PE4

35V

/PIP

825

15

33

PC6

PA1

COM

ELECTRODE_AMPS

R91

+5.5V

45

PE1

PA0

34

-15V

/RETRACT_ARC

32

20

3.74K

TCF6000

PA2

PD0

Q3

X16

+5.5V

36

PB6

PD1

21

R100

10

2N4401

10.0K

40

PB2

MODA

3

R158

R160

11

TACH INPUT

NC

14

TCF6000

X2

8

3

10.0K

10.0K

10.0K

R104

4

AS

PD2 (MISO)

22

47.5K

R101

1

TACH INPUT

NC

13

X16

10

1.30K

R23

9

33074A

C38

GND

X15

37

PB5

PC2

11

COM

3

/

X17

GND

12

7

5

/CLR

4

D24

J3

23

PD3 (MOSI)

PE5

46

PRIMARY CAP

4

IBIAS

ISOURCE

5

8

VREF

SDI

3

COM

CW

24

48

R172

OPTOCOUPLER

J5

6

NC

IBIAS

10

COM

COM

VDD

CLK

PD4 (SCK)

PE6

OPTOCOUPLER

6

R159

7

2

25

PD5 (CS_D/A)

PE7

50

10.0K

4.75K

50K

7

NC

V+

9

+5.5V

COM

6

VOUT

/LD

1

10.0K

SENSE_AUX

ELECTRODE SOLENOID

1.21K

26

C67

2

Ic

ISINK

8

10.0K

MS-001BA

Vdd

68HC711E9

PA3

31

100K

C40

1.0

35V

LM2907

R183

R188

+15V

-15V

J5

C70

C29

39.2K

2

R77

R174R173

.0047

COM

7.68K

R107

5.11K

R149

10.0KR63

10.0KR108

10.0K R181

10.0KR69

10.0KR180 10.0KR106

DZ3

1.0

10.0

10.0

RELAY

68.1K

50V

R182

1.00K

R50

R179

10.0K

R61

10.0KR62

R68

R184

15.0K

5.1V

50V

J5

COILS

COM

1W

R110

R111

1

COM

C6

COM

AMPSSENSE

D20

.0047

+15V

C11

R196

R197

1400V

15.0K

COM

5

R41

10.0

10.0

J5

PRE-CHARGE

+15V

D

CW

Q4

DISABLE

PRIMARY_POWER

6.81K

G

1K

4A

R109

100V

R189

COM

3

S

X2

C43

150p

33.2K

R16

9

1

3.92K

3.92K

LM224

8

33074A

R190

R191

50V

R60

2

COM

10

X3

15.0K

R15

R64

OUTPUT

243

243

1

NULL

NULL

8

R70

X16

1.00K

R25

1.00K

V_PWM

R115

7

D

READY

BOARD

J3

3

INPUT

V CC

7

COM

J2

I

5

R39

R34

47.5K

TCF6000

100K

3.32K

2

X6

6

511

511

2

10

2.43K

S

C47

INPUT

OUT

R42

R96

7.68K

6

X1

R98

P

TRANSFER SHUNT

10.0K

R94

4

VEE

NC

5

X1

1

R73

LT1014

8

R116

10

L

PIP

OP27

C53

D14

R48

D21

J2

A

C15

3

LT1014

C18

9

3.32K

Y

R72

28.0K

1.00K

R88

1.0A

0.1

.47

30V

50V

COM

1.50K

50V

C44

10.0K

1.00K

R103

R117

2

AIR_LOW

J3

243

COM

150p

J2

B

R37

R93

COM

82.5K

3.32K

4

R38

R97

50V

COM

O

C35

+15V

243

COM

AMPS

C45

A

R

R118

4

THERMAL

R89

J2

D

_

3.32K

ELECTRODE

100K

COM

/PIP

2700p

33.2K

R21

50V

R79

1.30K

R82

221K

+15V

221K

TCF6000

POWER SUPPLY

SENSE_AUX

+15V

+5.5V

J3

R83

X16

C22

12

MACHINE OVERVIEW

COM

150p

COM

5

D5

D6

+15V

+5.5V

-15V

1.21K

5

CW

13

50V

100K

X3

R78

R84

TRANSFER

1K

X1

14

1V = 68.07mA

LM224

7

7805

SHUNT

R80

10.0K

1.0

5W

R192

LM350

12

LT1014

6

X8

CUT

COM

R81

C4

R85

5.11K

R1

IN

X7

OUT

IN

OUT

C72

DIODES

S18647 ASSY

S18395-13 ASSY

R193

3.92K

R194

3.92K

10.0K

D23

.47

D2

0.1

R175

1.30K

R176

475

R177

1.30K

50V

D1

ADJ

619

R5

8.25K

R6

3.92K

R7

2.00K

R8

1.00K

R9

511

R10

50V

CUT

COM

AUX

XFMR

J1

243

R3

GND

D9

WINDINGS

6.19K

COM

1

1

NULL

NULL

8

C1

243

R40

TCF6000

J3

3

INPUT

V CC

7

R18

TP1

3300

C3

C71

LED1

LED2

LED3

8

R33

R36

CW

X16

50V

50V

30.1

C5

WORK

2

X4

6

GAIN = 80.0

18VAC

R2

2.67K

1000

0.1

R4

NOTE: SOME OR ALL OF THESE

243

INPUT

OUT

R28

10K

221

221

15J

100

C36

4

6

4

1V = 12.50 A

35V

50V

RESISTORS MAY NOT BE PRESENT

10.0K

R27

VEE

NC

5

3.32K

X1

R35

R24

CT

J1

50V

ELECTRODE

ELECTRODE SHUNT

C16

OP27

LT1014

7

C31

2

C7

C9

NOZZLE

0.1

5

C17

TP2

D8

POWER SUPPLY

18VAC

50

27

COM

COM

50V

50V

GND

2.67K

50V

35V

CALIBRATION

PILOT

10.0K

R46

15J

J3

COM

X9

-15V

WINDINGS

L1

ELECTRODE

R26

COM

COM

J1

IN

OUT

SHUNT

7

R32

R30

4

7915

C37

243

243

D3

PILOT

COM

D4

D7

DIODES

COM

+15V

+15V

+5.5V

+5.5V

FILENAME:

G3353_1CA

7

C68

C69

7

4

C63

C64

4

4

13

8

8

Vdd

26

C25

9

7

GENERAL INFORMATION

LAST NO. USED

C20

C10

C24

4.7

C51

C49

R-

197

X-

17

Y- 1

X2

C19

X5

ELECTRICAL SYMBOLS PER E1537

X6

X4

X1

X3

X12

C41

X16

X10

35V

X17

X15

C-

72

Q-

5

TP-

2

CAPACITORS =

MFD ( .022/50V

UNLESS OTHERWISE SPECIFIED)

4.7

C34

LABELS

D-

25

DZ-

3

LED-

3

RESISTORS = Ohms (

1/4W

UNLESS OTHERWISE SPECIFIED)

OP27

COM

OP27

LT1014

COM

LM224

TCF6000

TCF6000

68HC711E9

LM2907

MS-001BA

33074A

UC2856N

35V

DIODES =

1A, 400V

(UNLESS OTHERWISE SPECIFIED)

SUPPLY

VOLTAGE NET

Vss

4

C2

C8

4

11

C65

C66

11

11

12

1

1

1

12

5

POWER SUPPLY SOURCE POINT

COM

COM

REF. DESIGNATORS SKIPPED:

COMMON CONNECTION

-15V

X16

R51,R59,R66,R71,R74,R75,R86,R90,R92,R95,R105,R119,

FRAME CONNECTION

14

16

15

13

R143-R146,R150,R151,R161-R163,R168,R169,R185,R186

EARTH GROUND CONNECTION

2

1

5

J3

J3

J3

J3

J3

POWER

TO: DISPLAY

TO: OUTPUT

TO: CT &

TO: POWER

X2

7

NOTES :

SUPPLY

BOARD

BOARD

TSTATS

BOARD

6

33074A

J1

J2

J3

J4

J5

N.A.

SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE

1

2

1

5

1

8

1

3

1

4

3-19-99

3

2

5

4

8

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

G 3353

J1

J2

J4

J4

J5

J5

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

3

4

6

10

9

16

4

6

5

8

COM

NUMBER.

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

PRO-CUT 80