Lincoln Electric manual Precision TIG 275 Wiring Diagram for Code

PRECISION TIG 275 WIRING DIAGRAM FOR CODE: 11370

F-1

CONTROL PANEL (VIEWED FROM REAR)

415 VOLT CONNECTION
CONNECT STRAP TO
HIGH (H4) (AS SHOWN)
380-400 VOLT CONNECTION	L1 (U)	H1
CONNECT STRAP TO
MID (H3)

PRECISION TIG 275

306

1

1

301

303

2

2

304B

3

METER

3

4

4

302

5

5

6

6

(VIEWED FROM REAR)

L5

MINIMUM

N.E.

OUTPUT

DISPLAY

R4

314

320

321

316C

316B

315

316C

313C

316B

313B

STICK

BALANCE

LOCAL

MAXIMUM

POST FLOW

OUTPUT

R2

R1

R3

TIG

319

311A

322

REMOTE

317

316

316A

311A

311

312

316A

318

313A

313

MODE

(STICK)

(AUTO BAL)

(REMOTE)

(P. FLOW)

(THERMAL)

+ R -

+ G -

+ G -

+ G -

+

Y

-

B

W

B

W

B

W

B

W

B

W

331

332

333

334

335

ADVANCED CONTROL PANEL

(OPTIONAL)

FREQ

ON TIME

BACKGROUND

DOWN SLOPE

R9

R10

R11

R12

401C

401B

402

403

401D

405

406

408

409

410

407

401D

411

4-STEP

401A

401B

ON

404

(PULSE ON)

401

-

G +

B

W

2-STEP

OFF

TRIGGER

PULSE

						PROTECTION PCB
	A	A
	B	B
	C	C	L8	A	4
	D	D		B	1		J23
				C	2	J22
10K A-B	E	E
				D	3
AT MINIMUM	F	F		E	6
OPTIONAL				F	5
		REMOTE
REMOTE
		RECEPTACLE
TM
AMPTROL

		301	1
304B		302	2
		303	3	J8
		304	4
		304A	5
		306	6
L6		311	1
		312	2
		313	3
		314	4
		315	5
		316	6	J9
		317	7
		318	8
		319	9
		320	10
		321	11
		322	12
	331	W	1
		B	6
	332	W	2
		B	7
	333	W	3	J10
		B	8
	334	W	4
		B	9
	335	W	5
		B	10
L7
			1
			3
			2	J7
			5
			4
			6

L10

		1
		2
		3
		4	J5A
		5
		7
		6
		8
	L9
1		1
2		2
3		3
4		4	J5
5	N.A.	5
7		7
6		6
8
		8

CONTROL PC BOARD

N.D.

N.C.

J3

1 2 3 4 5 6 7 8 9 10

OR N.C.

J3

1 2 3 4 5 6 7 8 9 10

401	1	OPTIONTIG PCB (OPTIONAL)
402	2
W	12
403	3
404	4
405	5
406	6
407	7
408	8
409	9
410	10
411	11
	J1

1 2 3 4 5 6 7 8 9 10

J2

N.B.

220-230 VOLT CONNECTION

L2 (V)

S1

CONNECT STRAP TO

POWER SWITCH

PROTECTIVE BONDING CIRCUIT

LOW (H2)

220 VAC

220VAC

RECEPT.

H4

H3

H2

51

RECONNECT PANEL SUPPORT

L1 (U)

A

C1

GND1

GND-H

GND-H2

GND4

GND5

GND6

50

CB2

L1A

MID

5A

52

BYPASS

250

HIGH

LOW

PC BOARD

251

50A

CASE

115 VAC

GAS

L2A

CONTROL

CASE

T1

TO GROUND PER

C2

H1

PANEL

FRONT

TRANS.

NATIONAL

BACK

RECEPT.

VALVE

L2 (V)

COM

FOOT

ELECTRIC CODE

POWER FACTOR

GROUND

RECONNECT PANEL

CAPACITORS

X5

267

(OPTIONAL)

S

H2 (220V)

63.5VAC

F

X6

268

H3 (380V)

1

W 221

TO GROUND PER

H4 (415V)

S

X3

231

J6 2

R 222

NATIONAL

250

H5 (440V)

231A

115VAC

L4

216

ELECTRICAL CODE

201

X9

S

X4

232

X1

18VAC

204

105VAC

X10

F

F

X14

52

SCR1

L12

G1

R222 W221

S

X1

(+)

W209

X7

S

78VAC

1

G1

218

POS

20VAC

2

G3

R210

X8

F

F

3

G2

X2

G4

4

SCR2

T1

J4

5

G2

L1

6

217

POLARITY SWITCH MICRO SWITCH

7

220

AC

A-C, D-E, B-F

OPEN

8

218

DC+ B-D, C-E, A-F, G-H

CLOSED

9

217

FRONT GANG

DC- B-D, A-E, C-F, G-H

CLOSED

232

10

216

MICRO-SWITCH

115VAC

D

D2

REAR GANG

B

CB1

C8

C9

G3

S2A

NO

15A

SCR3

E

A

H

NC

233

231

220

F

286 NEG

G

233B

)-(

C

266A

4

8

233A

220A

D1

POS

265A

0 CR4

1

50A

SCR4

B

X2

CR4 2

G4

262

6

1

252

265

266

263

234

9

253

S2

SV2

2

269

NEG

POLARITY

253

(REAR VIEW, SHOWN

N.F.

WATER VALVE

10

270

252

SWITCH

(OPTIONAL)

IN AC POSITION)

3

271

11

220B

6

265

C1,C2

POWER FACTOR CAPACITORS, 50/460 (OPTIONAL)

J11

12

266

R7

C4,C5

BY-PASS CAPACITORS, .0047

5

262

271A

BACKGROUND

C6

HIGH VOLTAGE CAPACITOR, .0015/12kV

13

263

RECTIFIER

R8

C7

PHASE SHIFT CAPACITOR, 15uF/250VAC

4

213

271

269

267

C8,C9

HIGH FREQ PROTECTION CAPACITORS, .22/400

CB1

CIRCUIT BREAKER, 15 AMP

14

214

268

CB2

CIRCUIT BREAKER, 5 AMP

7

201

L13

270

262

CR4

12V DC RELAY COIL

15

204

263

D1

FREE WHEELING DIODE

8

W209

201

D2

BACKGROUND DIODE

16

R210

204

L1

OUTPUT INDUCTOR (CHOKE)

220B

L2,L3

HIGH FREQ INDUCTORS

W209

220A

R210

L4 -L13

RF TOROID CHOKES

R1

OUTPUT CONTROL POTENTIOMETER, 10K

R2

BALANCE CONTROL POTENTIOMETER, 10K

R3

POST FLOW POTENTIOMETER, 10K

R4

MIN OUTPUT POTENTIOMETER, 10K

R5

PHASE SHIFT RESISTOR, 200/100

214

R6

HOLDING RESISTOR, 50/225

FAN

S

R7

RESISTOR, 20/100

R8

RESISTOR, 5/50

213

R9

FREQ CONTROL POTENTIOMETER, 10K

233A

231A

C

R10

ON TIME CONTROL POTENTIOMETER, 10K

TRANSFORMER

R11

BACKGROUND POTENTIOMETER, 10K

231E

BYPASS/

PRIMARY

TRANSFORMER

R12

DOWN SLOPE POTENTIOMETER, 10K

THERMOSTAT

260

SECONDARY

S1

INPUT POWER SWITCH

STABILIZER

THERMOSTAT

S2

POLARITY SWITCH

PC BOARD

233A

S2A

MICROSWITCH ON POLARITY SWITCH

SCR1,2,3,4

MAIN POWER SCR’S

GAS VALVE

SV1

SV1

GAS SOLENOID VALVE, 115VAC

235

233A

SV2

WATER SOLENOID VALVE, 115VAC (OPTIONAL)

231D

T1

MAIN TRANSFORMER

231E

231A

T2

HIGH VOLTAGE TRANSFORMER

L11

E

F

T3

HIGH FREQ TRANSFORMER

LEAD COLORING CODE:

COMPONENT VALUE

L2

N.A. CONNECTION IS PIN TO PIN BETWEEN J23 AND J5.

B-BLACK

U-BLUE

UNITS:

238

C6

RESISTORS:

1

S

N.B. ROBOTIC INTERFACE CONNECTION.

G-GREEN

W-WHITE

OHMS/WATTS

260

115VAC

T3

R6

N.C. REMOVE JUMPER PLUG IN J3 WHEN INSTALLING

O-ORANGE

Y-YELLOW

CAPACITORS:

2

T2

SPARK

R-RED

MFD/VOLTS

J12

3

235

GAP

TIG OPTION PC BOARD.

CONNECTOR PIN NUMBERS:

5

N.D. DISCONNECT JUMPER LEAD BETWEEN PIN 1 AND

236

6

284

285

EXAMPLE: THIS IS PIN 7

4

233A

PIN 2 IN J3 TO DOUBLE PREFLOW & POSTFLOW TIMES.

L3

239

1 2 3

7 0F CONNECTOR J5

F

N.E. DISPLAY TOGGLE SHOWN IN MIN AMP POSITION.

237

FRONT

N.F. PLUGS INTO LOWER SWITCHED RECEPTACLE.

8

14

1 2 3

8

236

WORK

J5

LATCH

R5

C7

ELECTRODE

ARC STARTER AS’BLY

VIEW OF CONNECTOR ON PC BOARD

REAR

ELECTRICAL SYMBOLS PER E1537.

236B

ELECTRODE

B

WIRING DIAGRAM

G4031-2

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. If the diagram is illegible, write to the Service Department for a replacement. Give the equipment code number.

F-1