Lincoln Electric 405M, 355M service manual Schematic Power Supply Printed Circuit Board, Toc

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G-8	ELECTRICAL DIAGRAMS	G-8
SCHEMATIC - POWER SUPPLY PRINTED CIRCUIT BOARD

Machine Control Power Supply

+5V

TOC

TOC

DC Input (+)		J41
	2

J41

4

+ t R55

Machine Control

Shut Down

Capacitor

D4

6A

	200V
	R4	10.0K
C13
1
200V		D3
		1A
		600V
	7
	T1
	6

R2 10.0K R27 10.0K

Vref 1

6.19K
	R3

C6 C7

4.70.1

35V 50V

C8

10-55 VDC Operation

D22

1.0A

30V

7	VCC	OUT	6
8	VREF	VFB	2
4	RT/CT	COMP 1
5	GND	CS	3

X5

OV1

R39 56.2K

R58

R9 10.0

R60

10.0

R61 10.0

R10	R5
100K	100K

D21

1.0A

30V

R12 5.62K

47.5 R57 47.5 R7 47.5

C12

.0015

2000V

Vfb1

R8 475

	1	2
R6	47.5
	T1
	11	12
		D
		Q1
	G	21A
		200V
		S
	DZ8
	18V
	3W

D18

	6A
	200V
10
T1	C43	C41	C39
	100	100	0.1
	16V	16V	50V
3
	D19
	3A		IN
	600V
9
	C11	C14
T1	22	0.1
	35V	50V
4

LED2
332	R53

D24

X8

OUT

ADJ

C47	R46
1.0		1.21K
35V		.33W

33.2	R16	R15	33.2
					Vref 1
+15Volts
.750 Amp
			1		5
J42					OCI1
1
					CNY17-3
			2	6	4
					Vfb1
		1.82K			R52
					221K
		R14
					C45

150p

100V

R51

R50J42

3

+ t

.13

60V

+5Volts, .750 Amp

44.2K

820p

50V

C32

3W

0.05

R11

R13	C42
	2700p

3

J41

10p

100V

10.0K

50V

1

DC Input (-)		J41
	1

DZ1

GND

5
T1	C38	C44
	4.7	0.1
	35V	50V
8
		IN

			X1	8
		-15Volts, .100Amp	TL431	REF
C40	R48		6
1.0		1.21K		R49	43.2K	5
35V		.33W
						J42
ADJ
OUT		J42				J42

+5V

24V

3W

30.1		30.1	14
	R35		R36
				T2

D8

1A

600V

X9	2	6
		gnd_mcps

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EN-170

R45

OV2

D14

DZ2

27V

.5W

DZ3

27V

.5W

5.62K

DZ4

3.3V

3W

Undervoltage Detect

<30VDC5

			OCI2
			CNY17-3
J42			4	6
4
C49	R56	10.0K	R34
.022
			221K
			C27
			150p
gnd_mcps			100V

Overvoltage

Shutdown

>55 VDC

OV1

D17

C33

4.7

35V

R26

1

2

1.00K

D2

1A

600V

C26

1

200V

D15

1A

4600V

T2

11

D1

1A

5600V

T2

10

	Vref 2
	R1	15.0K
C3	C2
4.7	0.1
35V	50V
		C4
		820p
		50V

IN

C1 C5

4.70.1

35V 50V

IN

C10 C9

4.70.1

35V 50V

Operation 30-55 VDC

D23

1.0A

30V

7	VCC	OUT	6
8	VREF	VFB	2
4	RT/CT	COMP 1
5	GND	CS	3

X4

OV2

R38

56.2K

C28

10p

100V

D13

X7

OUT

GND

C30

1.0

35V

D12

X6

OUT

GND

C29

1.0

35V

			1
			C31
			.0015
			2000V
				D
				Q2
			G	21A
	R32			200V
	15.0			S
	R31	Vfb2	DZ7
			18V
C53	75K	R29	3W
.1		100K

D20 C52

1.0A 150p

30V

R28

5.62K

	D9	IN
	1A
3	600V
	C24	C25
T2	4.7	0.1
	35V	50V
12

R33	249	3W	R30
		0.05

	D16
	16A
	200V
2
	C37	C36	C35	C34
T2	100	100	100	0.1	R62	150
	16V	16V	16V	50V
13						.33W

J43

5

R44	150	+5Volts, .100 Amp
	.33W	CAN
		J43
		10
		J43
		4
		+5Volts, .100 Amp
R25	150	RS232
	.33W
		J43
		9

6

T2

9

7

T2

8

D7
1A
600V
C17	C18	C21
4.7	4.7	0.1	R19	2.49K
35V	35V	50V
				.33W
D6
1A
600V
C20	C19	C22	R23
4.7	4.7	0.1		2.49K
35V	35V	50V		.33W

NOTES :

N.A. SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE

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

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

D25

D10

J43

X3

OUT

6

ADJ

C23

R37

1.0

1.21K

35V

.33W

15Volts, .250Amps

SPI

R40

J43

3

+ t

.13

60V

LED1

+5Volts, 3 Amps

R63

150

R64

150

SPI

.33W

.33W

Vref 2

332

R41

R43

15

R42

44.2K

1

5

R17

J43

OCI3

8

CNY17-3

+ t

2

6

4

Vfb2

.24

+20Volts

475K

.200 Amps

R21

Gate Drive

C46

150p

J43

100V

2

1.82K

C16

R20

R22

J43

2700p

R24

10.0K

7

50V

+ t

.24

1

+20Volts

X2

8

.200 Amps

TL431

REF

6

Gate Drive

R18

43.2K

J43

11

J43

J43

1

12

FILENAME: G3631-2D2

GENERAL INFORMATION

LAST NO. USED

ELECTRICAL SYMBOLS PER E1537

R-

CAPACITORS = MFD ( .022/50V

UNLESS OTHERWISE SPECIFIED)

LABELS

C-

RESISTORS = Ohms (

1/4W

UNLESS OTHERWISE SPECIFIED)

D-

DIODES =

1A, 400V

(UNLESS OTHERWISE SPECIFIED)

SUPPLY VOLTAGE NET

POWER SUPPLY SOURCE POINT

COMMON CONNECTION

FRAME CONNECTION

EARTH GROUND CONNECTION

THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY THE LINCOLN ELECTRIC COMPANY AND IS NOT TO BE REPRODUCED, DISCLOSED OR USED WITHOUT THE EXPRESS WRITTEN PERMISSION OF THE LINCOLN ELECTRIC COMPANY, CLEVELAND, OHIO U.S.A.

UNLESS OTHERWISE SPECIFIED TOLERANCE

"X" INFO.

Chg. Sheet No.

DESIGN INFORMATION

REFERENCE:

EQUIPMENT TYPE:

Digital Systems

MANUFACTURING TOLERANCE PER E2056

EDGE

ON 2 PLACE DECIMALS IS ± .02

6-2-2000A

DRAWN BY: JP\TK

ON 3 PLACE DECIMALS IS ± .002

SUBJECT:

Schematic, Digital Power Supply

ON ALL ANGLES IS ± .5 OF A DEGREE

10-27-2000E

ENGINEER:

MATERIAL TOLERANCE ("t") TO AGREE

SUPERSEDING:

SOLID

WITH PUBLISHED STANDARDS.

SCALE:NONE

DATE:11-30-98

DRAWING No.:

G 3631

DO NOT SCALE THIS DRAWING

APPROVED:

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

POWER WAVE 355M/405M