Lincoln Electric SVM151-A service manual MULTI-WELD 350 Wiring Diagram, Wiring Diagram MULTI-WELD

Page 102

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G-2

ELECTRICAL DIAGRAMS

 

G-2

 

 

 

 

WIRING DIAGRAM - MULTI-WELD 350

 

 

 

MULTI-WELD 350 WIRING DIAGRAM

CONTROL BOX

FRONT PANEL

(VIEWED FROM REAR)

ON/OFF & MODE SELECT

 

S1

 

CC

202A

CV

OFF

 

202

 

 

 

 

231

 

 

219

L6

L7

CONTROL BOX

 

 

 

 

N.A.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

BACK PANEL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(VIEWED FROM PCB SIDE)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PANEL PLUGS

R 326

327

 

 

301

302

330

304

331

306

307

308

300

R 313

314

KEY PIN

R 315

316

309

310

311

312

P21

1

2

3

4

1

2

3

4

5

6

7

8

9

P22

 

 

4

 

 

7

 

P23

J21

1

2

3

5

6

8

9

 

 

 

 

 

 

 

 

 

 

 

 

 

J22

 

 

 

 

 

 

 

J23

PANEL RECEPTACLES

226

227

 

 

201

202

230

204

231

206

207

208

200

213

214

 

215

216

209

210

211

212

 

D3

E3

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

R

 

 

R

 

 

 

 

 

 

 

 

D1

E1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TUNNEL ASSEMBLY

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(VIEWED FROM PCB SIDE)

R 313

314

KEY PIN

R 315

316

309

310

311

312

301

302

303

304

KEY PIN

 

 

308

PANEL PLUGS

 

 

 

 

 

 

 

 

P24

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

 

 

 

P20

1

2

3

4

5

6

7

9

1

2

3

4

5

6

7

8

9

 

 

 

 

 

 

 

 

J24

 

 

 

 

 

 

 

 

J20

413

414

 

415

416

409

410

411

412

401

402

403

404

 

 

 

408

PANEL RECEPTACLES

 

 

 

 

 

R

 

 

R

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TOC

234

234A

202B

217

218

TIN TERMINAL

222

L4

L5

PERIPHERAL PCB

J30

L9

Return to Section

224

PL1

 

INPUT

INDICATOR

LIGHT

VOLT

M1 M2 M3 M4 M5 M6 M9 M10

+

AMP

PL2

 

- 223

M1 M2 M3 M4 M5 M6 M9 M10

THERMAL

LIGHT

 

 

 

J31

 

 

J32

 

 

 

 

 

 

 

202B

224

237

230 201

238

234 204

208

236

ANALOG CONTROL

POWER SUPPLY PCB

J42

408

 

409

 

411

 

412

 

410

 

439

 

438

 

441

 

440

 

442

J41

437

436

 

L8

402 J46

401A

404

403

436 J47

442

437

DC BUSS POWER SUPPY PCB

TOC

TOC

OUTPUT CONTROL

R1

LO

WIPER

HI

L10

REMOTE RECEPTACLE

L3

226R 227

M1

M2

 

M3

M4

M5 M10

206

223

 

222

219 221

218

M1

M2

M3

M4

M5 M10

A D B

C

 

207

 

 

M6

 

 

 

 

M9

 

 

 

 

 

 

 

 

 

 

 

 

 

M6

 

 

M9

 

 

 

 

E

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J6

J4

J11

J2

J5

J10

401

401A

 

X1

X4

C1

 

INPUT CAPACITOR

 

(LEFT)

 

REVERSE

 

DIODE

 

D5

WHEELING (LEFT)

 

R 413 414 440 441

5 6 8 7 9 1 3 2 4

B7

B3

B1

B2

CHOPPER PCB

P45

J45

LEAD

X4A

WHEELING (RIGHT)

X1A

C2

INPUT CAPACITOR (RIGHT)

D4

REVERSE

DIODE

D6

P45A

438

439

R 415

416

 

 

 

 

 

 

 

 

5

6

8

1

3

7

9

2

4

J45A

 

B1

B2

B7

B3

 

 

 

 

 

 

 

CHOPPER PCB

217

221

PIPE

STICK/

GOUGE

S2

A A

B B

C C

D

D

E

D1

E

ARC FORCE

HOT START

R3

R2

HI WIPER LO

J7

J3

WELD CONTROL PCB

OUTPUT

CONTROL

 

FREE

DIODES

(LEFT)

303

303A

RED

+

FAN

FREE DIODES

(RIGHT)

E1

CC SLOPE

COVERED PANEL

F

 

 

MAX VAR

MIN

MAX VAR

MIN

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

HOT START

ARC FORCE

J12

 

 

J8

J9

J1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

J13

HEATSINK

CONNECTION

(LEFT)

X1A

X1

300

HEATSINK

CONNECTION (RIGHT)

OUTPUT CHOKE (LEFT)

OUTPUT CHOKE (RIGHT)

(VIEWED FROM

REAR)

VAR MIN MAX

VAR MIN MAX

237

200

238

216

215

214

213

 

 

 

 

 

 

R

 

R

211

210

212

209

234A

236

330

 

INPUT CONTACTOR CR1

303A

307

306 THERMOSTAT

331

CR1

 

 

BP5

D1

D2

 

INPUT DIODES

X4

L1L2

BP2

BY-PASS PCB

BP1

X4A

50mV/400A

SHUNT

R326

327

PCB CONNECTOR CAVITY NUMBERING SEQUENCE Ý `Ð

(VIEWED FROM COMPONENT SIDE OF P.C. BOARD)

1

1

2

1

3

1

4

1

5

1

8

 

PANEL RECEPTACLE CAVITY NUMBERING SEQUENCE

L3 THROUGH L10: RF CHOKES

 

 

 

Ý `Ð

 

 

 

(VIEWED FROM LEAD SIDE OF RECEPTACLE)

 

 

R1: 10K, MULTI-TURN

1

 

 

 

 

 

R2, R3: 10K, ONE TURN

3

2

1

 

 

 

 

 

 

1

1

2

3

 

 

 

 

NOTES:

N.A. CUT THIS JUMPER TO ENABLE ON/OFF OUTPUT SWITCHING FROM REMOTE RECEPTACLE (SEE INSTRUCTION MANUAL)

N.B. R-XXX DENOTES A RED LEAD NUMBERED XXX

BP3

(+) INPUT

BP4

2

3 4

 

4

6

5

8

6

10

9

16

2 PIN

4 PIN

6 PIN

8 PIN

 

10 PIN

 

16 PIN

J6

J7, J8,

J9

J10, J11, J45

J2, J3

J4, J5, J42

 

J12, J31

 

J41, J46

 

 

J13, J47

 

 

 

 

3

2

 

6

5

4

2

3

4

5

6

4

9

8

7

 

4

7

8

9

 

 

 

 

 

GENERAL INFORMATION ELECTRICAL SYMBOLS PER E1537

CASE

GROUNDING

4 PIN

9 PIN

4 PIN

9 PIN

J21

J20, J22, J23,

P21

P20,P22, P23,

RESISTORS = OHMS/WATT UNLESS OTHERWISE SPECIFIED ALL SWITCH WIRING VIEWED FROM REAR OF SWITCH

(-) INPUT / WORK

SCREW

J24, J45, J45A

P24,P45, P45A

NOTE: SINCE COMPONENTS OR CIRCUITRY OF 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.

9-17-99A

G3676

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

MULTI-WELD 350

Page 101 Page 103
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Page 101 Page 103
Contents Multi-Weld TM 350 Arc Converter Safety California Proposition 65 WarningsElectric Shock can kill Welding Sparks can cause fire or explosion IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications MULTI-WELD 350 K1735-1Safety Precautions QUICK-CONNECT PIG-TAILSWork Connection Case GroundingFixed Parallel Operation Power Source Setup Converters Cable Size On Cable AWG mm2Table of Contents Operation Section Safety Instructions OperationOperating Instructions Product Description VersatilePortable Recommended Equipment and Processes MULTI-SYSTEM Power SourcePIG-TAIL Leads and Connectors Distribution BOXCV Mode Wire Welding CC Mode Stick Welding and GougingRemote Output Control Options Input Power/ Mode Switch has three positions Front Panel ControlsRecessed Panel Controls Transporting and Storage of the MULTI-WELD For CC STICK/GOUGE Mode onlyParalleled Converters Cable HandlingProtection Features MULTI-WELD Table of Contents Accessories Section Semiautomatic Welding Accessories AccessoriesOPTIONS/ACCESSORIES Connection of Lincoln Electric Wire FeedersTo Work MULTI-WELD Table of Contents Maintenance SectionSection D-1 Maintenance MaintenanceSee additional warning information throughout this manual Service Figure D.2 Major Component LocationsMULTI-WELD Table of Contents Theory of Operation Section Theory of Operation General DescriptionPower Modules and FEED- Back Figure E.3 Power Modules and FeedbackAnalog Control Power Supply Board and Weld Control Board Mode Selector and Output Controls Figure E.5 Mode Selector and Output ControlsOVER-VOLTAGE Protection Insulated Gate Bipolar Transistor Igbt Operation Pulse Width Modulation 8E-8Chopper Technology Fundamentals 70-80VDCMULTI-WELD Table of Contents Troubleshooting & Repair Section Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures PC Board can be damaged by static electricityPerform the DC Buss Supply Troubleshooting GuidePower Supply Board Test Board TestCoil Resistance and Supply SpecificationsPerform the Input Contactor Voltage TestInput Voltage and Resistance TestFunction Problems Analog Control Power Supply Board Test Tion and Adjustment TestSee the Digital Meter Calibra Perform the DC Buss Supply Welding Problems Troubleshooting & Repair Troubleshooting & Repair Case Cover Assembly Removal Replacement Procedure Test DescriptionMaterials Needed Removal Procedure Replacement ProcedurePower Module Capacitor Discharge Procedure Procedure Figure F.2 Power Module Capacitor Terminal DischargeInput Contactor Coil Resistance and Supply Voltage Test Input Contactor Coil Resistance Supply Voltage Test Coil Test ProcedurePerform the Power Module Capacitor Discharge procedure Leads #303A #330Test for Contact Continuity Supply PC Board TestAnalog Control Power Supply PC Board Test Test Procedure Figure F.4 Analog Control Power Supply PC BoardPower Supply PC Board Test DC Buss Power Supply PC Board Test DC Buss Power Supply PC Board P46 P47Table F.2 DC Buss Power Supply PC Board Voltage Table Chopper PC Board Input Voltages and Resistance Test Figure F.6 Power Module Assembly Details Chopper PC Board Input Voltages Resistance TestTest Procedure for the Left Side Power Module Power Module Capacitor Discharge ProcedureCC Mode Input Voltage Applied 75 VDC Scope SettingsNormal Open Circuit Voltage Waveform CV Mode Output Control AT Maximum Machine Loaded to 350 Amps AT 34 Volts CC-STICK Mode Normal Weld Voltage WaveformMachine Loaded to 350 Amps AT 34 Volts CV Mode CV Mode Output Control AT Minimum Case Front Assembly Removal and Replacement DescriptionReplace the case cover Weld Control or Peripheral PC Board Removal and Replacement Figure F.8 Case Front Assembly Details Replacement Procedure Description Digital Meter Removal Procedure Lens Bezel Spacer Seal KnobOutput Control Potentiometer Removal Procedure Refer to Figure F.9Input Contactor Removal and Replacement Figure F.10 Input Contactor Assembly Details Lead #331Replacement Procedure Input Diode Removal and Replacement Figure F.11 Input Diode Assembly Details 25-27 300-324 Refer to Figure F.11FAN Motor Assembly Removal and Replacement Figure F.12 FAN Motor Assembly Details Perform the Input Diode Replacement procedure Perform the Input Diode Removal proce- durePower Capacitor Removal and Replacement Figure F.13 Power Capacitor Mounting Details Reassembly Chopper PC Board and Diode Module Removal and Replacement Chopper PC Board Removal and Replacement RemovalReplacement Refer to Figure F.14Diode Module Removal and Replacement Figure F.15 Diode Module Mounting DetailsRefer to Figure F.15 Figure F.16 Diode Module Tightening Sequence Open Circuit Voltages Retest After RepairIdle Amps Load TestElectrical Diagrams Table of Contents Electrical Diagrams SectionMULTI-WELD 350 Wiring Diagram Wiring Diagram MULTI-WELDSchematic Control PC Board #1 Schematic Control PC Board #2 Schematic Control PC Board #3 Schematic Control PC Board #4 Schematic Control PC Board #5 PC Board ASSEMBLY-CONTROL RESISTOR,SMD,1W,243OHMS,1%Schematic Peripheral Printed Circuit Board PC Board ASSEMBLY-PERIPHERAL PC Board Reference Description DesignatorsSchematic Power Printed Circuit Board PC Board ASSEMBLY-POWER Return to Section Return to Section TOC To Section TOCSchematic Analog Printed Circuit Board PC Board ASSEMBLY-ANALOG Schematic BY-PASS Printed Circuit Board PC Board Assembly BY-PASS Schematic Chopper Printed Circuit Board 19303 MPC Board Assembly Chopper SVM Error Reporting Form
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