Lincoln Electric IM687 manual Wiring Diagram Square Wave TIG 175 PRO 460/575/1/60

SQUARE WAVE TIG 175 PRO

WIRING DIAGRAM - SQUARE WAVE TIG 175 PRO (460/575/1/60)

VOLTAGE RECONNECTION

H3 (575V)

H2 (460V)

575 VOLT CONNECTION (AS SHOWN)

H2

H1 and H3 TO POWER SWITCH.

H1

H3

H1

209

W X3

T1

H2 NOT CONNECTED; INSULATE.

S

460 VOLT CONNECTION

18VAC

F

210

B X4

H1 and H2 TO POWER SWITCH.

W 221

S X1

201

W X5

H3 NOT CONNECTED: INSULATE.

C1

C2

R 222

C1 AND C2 MUST ALWAYS BE

18VAC

F

78VAC

POWER

204

W X6

X2

CONNECTED ACROSS POWER SWITCH.

SWITCH

)-(

230

B X7

220

115VAC

115VAC

L2

L1

SCR1

FAN

232

B X8

G1

CONNECT GREEN LEAD TO GROUND

{

217

X2

PER NATIONAL ELECTRIC CODE. CONNECT

SCR2

BLACK AND WHITE LEADS TO SUPPLY

L1

CIRCUIT.

G2

POLARITY SWITCH

MICRO SWITCH

218

SCR HEATSINK

AC

A-C, D-E, B-F

OPEN

DC+

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

CLOSED

THERMOSTAT

(+)

FRONT GANG

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

CLOSED

D

REAR GANG

MICRO-SWITCH

L2

G3

H

S2A NO

E

A

NC

SCR3

TOROID

F

G

CHOKE

216

C

G4 216 220 G3 G2 218 G1 217

222R(-)

221W(+)

THERMOSTAT

311

312

POWER "ON" LIGHT

G4

POS

314

SCR4

B

X1

313

231

W

233

PL1

)-(

S2

POLARITY

D1

(REAR VIEW,

CURRENT CONTROL

SWITCH

SHOWN IN AC POSITION)

J1

J2

J3

R1

312

277

R2

276

B

B

244

311

275

C1,C2

BY-PASS CAPACITORS

J4

242

STICK

C3

HIGH VOLTAGE CAPACITOR, .0015/12kV

241

S3

BYPASS/

C4

PHASE SHIFT CAPACITOR 15uF/250VAC

STABILIZER

D1

FREE WHEELING DIODE

233

243

MODE SWITCH

PC BOARD

L1

OUTPUT INDUCTOR (CHOKE)

275

L2

HI-FREQ PROTECTION CHOKE (TOROID)

231

( STICK - CLOSED

L3,L4

HI-FREQ INDUCTORS

276

244

TIG - OPEN )

PL1

POWER "ON" LIGHT, 115VAC

243

R1

CURRENT CONTROL POTENTIOMETER 10K

277

TIG

R2

HOLDING RESISTOR 50/100

R3

PHASE SHIFT RESISTOR 200/100

THERMAL LIGHT

S

S2A

MICROSWITCH ON POLARITY SWITCH

CONTROL PC BOARD

241

Y

L3

C3

SCR1,2,3,4

MAIN SCRs

+

-

SPARK

SV1

GAS SOLENOID, 115VAC

TL1

115VAC

T3

T4

T1

MAIN TRANSFORMER

242

GAP

T3

HIGH VOLTAGE TRANSFORMER

T4

HI-FREQ TRANSFORMER

F

TL1

THERMAL LIGHT, LED

J6

E

A

A

L4

LEAD COLORING CODE:

COMPONENT VALUE

J5

D

B

B

237

UNITS:

F

ARC STARTER AS’BLY

B-BLACK

U-BLUE

RESISTORS:

C

C

C

G-GREEN

W-WHITE

OHMS/WATTS

A

D

D

R3

C4

O-ORANGE

Y-YELLOW

CAPACITORS:

B

E

E

10K A-B

R-RED

MFD/VOLTS

F

F

AT MINIMUM

236B

236

201

204

235

234

238

232

230

210

209

REMOTE

REMOTE

TIG

ELECTRODE

WORK

CONNECTOR PIN NUMBERS:

236A

TM OR

GAS VALVE

RECEPTACLE

AMPTROL

PULSER

EXAMPLE: THIS IS PIN 7

1

2

3

7

0F CONNECTOR J4

238

N.A. CONNECT GREEN/YELLOW LEAD TO GROUND

SV1

236

236A

PER NATIONAL ELECTRIC CODE. CONNECT

8

14

BLACK AND WHITE LEADS TO SUPPLY

J4

234

CIRCUIT.

LATCH

235

VIEW OF CONNECTOR ON PC BOARD

ELECTRICAL SYMBOLS PER E1537.

1-00

L10569-1

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-2

WIRING DIAGRAM

F-2