Electrical diagrams, Machine schematic — square wave tig 255, G-10 – Lincoln Electric SQUARE WAVE TIG 255 SVM100-A User Manual

Page 96: Square wave tig 255, Display, Keypad, Pc board keypad led, Input lines, Bypass pc board

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G-10

ELECTRICAL DIAGRAMS

SQUARE WAVE TIG 255

MACHINE SCHEMATIC — SQUARE WAVE TIG 255

SCR2 GATE

SCR3 GATE

SCR1 GATE

S C R 4

S C R 1

S C R 3

S C R 2

M A I N

R E C T I F I E R

D 1

1 5 0 /400

O U T P U T

I N D U C T O R

A C

D C

A C

R E C E P T A C L E

R E M O T E
C U R R E N T
C O N T R O L

R E M O T E

A R C S T A R T

S W I T C H

1 0 K

R 1

R 2

C 1

P O L A R I T Y

S W I T C H

S H U N T

E L E C T R O D E

W O R K

S V 1

S V 2

G A S

S O L E N O I D

W A T E R

C B 1

1 1 5 V / 1 5 A

F A N

X 3

X 4

2 5 0

S E E N O T E A

M A I N

T R A N S F O R M E R

R E C O N N E C T

P A N E L

X 2

X 1

H 1

H 2

H 3

H 4

L 2

L 1

T 1

P L 1

N O CONNECTION

E L E C T R I C A L S Y M B O L S P E R E 1 5 3 7

SCR4 GATE

INPUT

LINES

C 8

C 7

T M

DISPLAY

CLOSED

IN DC

R E M O T E

H I G H F R E Q .

T R A N S F O R M E R

. 2 2 / 4 0 0 V

1 1 5 V A C

R E C E P T A C L E

3 K V

. 0 0 4 7 /

L E D ( + )

D 0

D 1

D 2

D 3

D 4
D 5

D 6

D 7

L E D ( - )

V D D

V o

R / W

V S S

R S

LCD

ROW 3

COL 1

COL 2

COL 3

COL 4

KEYPAD

SCR1 GATE
SCR2 GATE
SCR3 GATE

SCR4 GATE

SCR3 CATHODE

SCR4 CATHODE

4 0 0 A / 2 0 0 m V

24VAC

16VAC

S Q U A R E W A V E T I G 2 5 5

BUZZER

PIEZO

S2A

S 2

1 J 9

2 J 9

3 J 9

4 J 9

5 J 9

6 J 9

7 J 9

8 J 9

4 / 2 2 0

5 0 / 1 0 0

SCR1 & SCR2 CATHODE

9J5
4J5
1J5

2J5
3J5
8J5
6J5

4J11
1J11

2J11
3J11
8J11
6J11

SCR4 CATHODE (MAIN RECTIFIER AC1)

SCR3 CATHODE (MAIN RECTIFIER AC2)
SCR1 & SCR2 CATHODE (MAIN RECTIFIER +)

MAIN RECTIFIER -

10J10

4J10

1J10

12J10

2J10

3J10
9J10
7J10

12J6

5J6

2J6

8J6
1J6

ELECTRODE SENSE
WORK SENSE

REMOTE CONTROL HIGH
REMOTE CONTROL WIPER
REMOTE CONTROL LOW

18VAC

115VAC

115VAC FOR HI-FREQ

HI-FREQ CONTROL1
HI-FREQ CONTROL 2

115VAC FOR SOLENOIDS
115VAC FOR SOLENOIDS

3J4
2J4

3J14
2J14
6J14

ARC START SWITCH
ARC START SWITCH

3J6

4J6
11J6

AC/DC MICROSWITCH

10J6

AC/DC MICROSWITCH

10J12

ELECTRODE SENSE
WORK SENSE

AC/DC MICROSWITCH

4J13

12J13

5J13

13J13

2J13

1J13

9J13

O P T I O N A L A M P T R O L R E M O T E
C O N T R O L A N D A R C S T A R T S W I T C H

3J8

9J8

1J8

7J8

2J8
6J8

12J8

5J8

11J8

4J8

10J8

6 J 6

1 3 J 6

T 3

H I G H

F R E Q U E N C Y

C I R C U I T

C 3

. 0 0 1 5 /
1 2 K V

X 5

5 0 / 6 0 H Z M A C H I N E S O N L Y

5J4

1J4
4J4

1J3
2J3
9J3

10J3
11J3
12J3
13J3
14J3
15J3
16J3

4J3

5J3

7J3
3J3
6J3

8J3

R O W 1

R O W 2

R O W 3

1J1
2J1
3J1
4J1
5J1
6J1
7J1
8J1

C O L 4

C O L 3

C O L 2

C O L 1

1J2

5J2

3J2

7J2

9J2

ROW 1

ROW 2

ROW 4

ROW 5

2J2

4J2

6J2

8J2

9J11

4J12

11J12

5J12

12J12

2J12
8J12

1J12

3J12

3J15
2J15
6J15
1J15

5J15
4J15

4 3 2

4 3 3

4 3 2 B

4 3 5

4 3 6

4 2 9

4 3 2 A

2 3 2 A

2 3 3

2 2 9

2 3 7

2 3 5

2 3 6

3 0 3

3 1 1

3 0 1

3 0 9

3 0 2

3 1 3 C

3 0 5

3 1 2

3 0 4

2 1 8 A

2 1 7 A

G 3

G 2

2 2 0 A

G 1

G 4

2 1 6 A

( - )

( + )

C 8

C 9

C 4

C 5

S P A R K
G A P

BYPASS

PC BOARD

2 3 1

2 3 2

2 3 0 E

2 3 0

2 3 0 C

2 2 9 A

5 2

5 2 A

2 3 0 D

2 3 2 B

2 3 3 A

2 3 0 E

R 3
2 0 0 / 1 0 0

R 4
2 0 0 / 1 0 0

5 0 / 4 6 0

L E A D # 2 5 0 C O N N E C T S T O " H I G H " T E R M I N A L O N

F R O M M A I N T R A N S F O R M E R ( T 1 )

R E C O N N E C T P A N E L , A L O N G W I T H C O R R E C T L E A D

2 0 8 / 2 3 0 / 4 6 0 , 2 0 0 / 3 8 0 / 4 4 0

L E A D # 2 5 0 C O N N E C T S T O T H E H 5 L E A D O F

T H E M A I N T R A N S F O R M E R ( T 1 )

2 3 0 / 4 6 0 / 5 7 5

L E A D # 2 5 0 C O N N E C T S T O T H E " M I D " T E R M I N A L

O N T H E R E C O N N E C T P A N E L , A L O N G W I T H T H E
H 3 L E A D F R O M T H E M A I N T R A N S F O R M E R ( T 1 )

N O T E A :

C O N N E C T S A C C O R D I N G T H E T H E I N P U T V O L T A G E

L E A D # 2 5 0 F R O M P O W E R F A C T O R C A P A C I T O R S

B - B L A C K

R - R E D

Y - Y E L L O W

G - G R E E N

U - B L U E
W - W H I T E

C O M P O N E N T V A L U E

U N I T S :

C A P A C I T O R S :

M F D / V O L T S

R E S I S T O R S :

O H M S / W A T T S

L E A D C O L O R I N G C O D E :

C O N N E C T O R P I N N U M B E R S :

V I E W O F C O N N E C T O R O N P C B O A R D

1 2 3

1 6

L A T C H

E X A M P L E : T H I S P I N I N

C O N N E C T O R J 1 0 I S " 6 J 1 0 "

1 2 3

O - O R A N G E

1 6

2 7 3 6

S C H E M A T I C - M A C H I N E

12J8

11J8

10J8

B
B
R

8J14

4J14

1J14
5J14

11J13

3J13

2 3 5 A

2 3 0 B

C 2

1 5 / 2 5 0

5 1

2 2 0 V

R E C E P T A C L E

C B 2

2 2 0 V / 2 A

H 5

T 4

H I G H
V O L T A G E
T R A N S F O R M E R

T 2

PC BOARD

KEYPAD LED

1 J 7

R
W

2 2 2

2 2 1

S H U N T ( - )

S H U N T ( + )

S H U N T ( - )

H 1

2 5 / 2 5

2 0 0 / 2 4 0 / 4 0 0 , 2 2 0 / 3 8 0 / 4 1 5 . 3 8 0 / 4 1 5 / 5 0 0

2 J 7

3 - 1 0 - 9 4

L 1

S H U N T T O R O I D L 2

L 3

L 4

2 4 0

2 3 9 A

NOTE: This machine schematic is provided for reference only and may not be totally applicable to every code covered in this manual.

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