Lincoln Electric SP-250 service manual Electrical Diagrams

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G-9	ELECTRICAL DIAGRAMS
	WIRING DIAGRAM FOR CODE 9402
	SP-250 (DUAL VOLTAGE) - WIRING DIAGRAM

G-9

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					A	541B
					B	539B	1
					C	322
2 LINE X 16 CHAR.			(J13)				2
					D	321
							3
ALPHA-NUMERIC					E	325B
							4
					F	324B	5
			OPTIONAL SPOOL OR PULL
LCD	DISPLAY						6
			GUN RECEPTACLE				7
							8
							9
							10
AUTO				MANUAL			11
							12
							13
							14
							15
PROCESS					SAVE		16
WIRE/							5
GAS
							3
							1
MEMORY							7
1	2	3	4		5		9
							6
							8
	SPOT	SWITCH	IPM VOLTS	TOGGLE			2
							4
TIMERS	SET	SET		4	5
OFF	DISPLAY	DISPLAY

KEYPAD MATRIX

N.F.

		(J7)
			*
	1	2	3	4
	R
(J1)	B					1	2
*
						515	325
		N.D.
				(J5)
					*
			1	2	3	4
(J2)
*			326	325	327	324

B R

PIEZO

ALARM

CONTROL BOARD

	*	(J4)
3	4	5	6	7	8
324	206	541A	495	542	543

		(J6)			N.D.
			*
1	2	3	4	5	6
515	555	539	206		541

		1
(J8)	*	2
		3
		4

					(J9)		*
1	2	3	4	5	6	7	8	9	10

2081

2092

2063

GND 4

204A 5

2026

203	7
325	*(J3)
	8
204S	9
207	10
320	11
204	12
G1	13
G2	14

SP - 250

SPOOL GUN

		MODULE
		(J12)
			*
			(J11)
				*
1	2	3	4	5	6
515	325	324	206	541A	495

GAS

SOLENOID

1541B

2321

3324B

6539B

7322

8325B

5

9

10

7 8

RF CHOKE

AS'BLY

542 543

GENERAL INFORMATION

ELECTRICAL SYMBOLS PER E1537

COLOR CODE:

B - BLACK

W - WHITE

R - RED

U - BLUE

*INDICATES CONNECTOR CAVITY NO.

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TO

NOTES

WORK

N.A.

N.A. WELDING CABLE MUST BE OF PROPER CAPACITY FOR THE

N.C.

W

541

MOTOR/

CURRENT AND DUTY CYCLE OF IMMEDIATE AND

T

R

515

327

GEARBOX

FUTURE APPLICATIONS.

P.M.

A

U

555

C

GND

N.J.

324

H

B

206

N.B. THIS DIAGRAM SHOWS THE "ELECTRODE" POLARITY

325

206

207

N.B.

B

539

"POSITIVE". TO CHANGE POLARITY, TURN THE UNIT

326

OFF AND REVERSE LEAD CONNECTIONS AT CABLE

THUMB

CONDUCTOR STRAP AND WORK STUD.

SWITCH

327

320

326

325

N.E.

R.F. TOROID AS'BLY.

N.C. CONNECTOR SHOWN GEARBOX SIDE VIEW.

INC.

DEC.

N.G.

TO SINGLE PHASE

R.F. FILTER

SUPPLY LINE

326

THERMOSTAT

THERMOSTAT

N.D. CONNECTORS MOUNTED ON NON-COMPONENT SIDE

L1

OF BOARD.

324

S3

S4

TRIGGER

N.E. THERMOSTATS MOUNTED ON CHOKE COIL

.

325

L2

S2 MOUNTED CLOSEST TO FAN; S3 MOUNTED CLOSEST TO

X5

POWER TRANSFORMER.

202

N.F. KEYPAD MATRIX SHOWN FRONT VIEW.

X6

W

H4

204A

GND

N.G. THERMOSTAT S4 MOUNTED ON FAN SENSOR BRACKET

H2

H3

TO GROUND PER

X7

208

L1

T1

203

LOW V.

HIGH V.

NATIONAL ELECTRICAL

N.H. RESISTOR R2 MOUNTED ON FAN SENSOR BRACKET.

X1

G1

CODE

H1 H1

SCR 1

B

N.J. CONNECTOR SHOWN PIN SIDE VIEW.

250V

L2

CAVITY NUMBERING SEQUENCE

204

470A

L1

L2

X2

SCR HEATSINK

(COMPONENT SIDE OF P.C. BOARD)

ASBLY

H2

GND.

RECONNECT PANEL

1

16

1

9

H2

X3

SCR 2

G

J1

J2

250V

P2

X4

470A

H3

G2

H1

H4

1

7

1

5

1

4

H3

209

POWER TRANSFORMER

D1

J3

J9

J4

300V

J11

H1

85A

N.E.

P2

10

LINE

T1

T2

8

14

6

5

8

SWITCH

P1

P2

1

2

1

3

S1

206

FAN

S2

J7

J12

MOTORS

J8

THERMOSTAT

15 OHMS

R1

3

4

4

6

C1

C2

C3

C4

100 W

C1 THRU C4

(NON-COMPONENT SIDE OF BOARD)

30,000 MFD

+

+

+

+

50V

OUTPUT

1

2

1

3

CHOKE

R2

J5

J6

207

2.5K

204S

N.H.

10W

3

4

4

6

10-19-90N

L7976

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. The specific diagram for a particular code is pasted inside the machine on one of the enclosure panels.

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