Lincoln Electric SVM141-A service manual Electrical, Wiring, Diagram L10747, Tig

Page 102

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

 

 

 

 

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

 

 

 

 

NOTE:

This code

L1(U)

H1

H4 (460V)

H3 (230V)

H2 (208V)

Wiring

G-2

SQUAREWAVE

diagram is for reference only. It may not be accurate for is pasted inside one of the enclosure panels of your

L2 (V)

460 VOLT CONNECTION (AS SHOWN) CONNECT A TO HIGH (H4)

230 VOLT CONNECTION

 

 

 

TO GROUND PER

 

CONNECT A TO MID (H3)

 

 

 

 

NATIONAL

 

 

 

 

ELECTRICAL CODE

 

 

 

 

 

 

208 VOLT CONNECTION

 

 

 

 

 

 

CONNECT A TO LOW (H2)

 

 

 

 

 

 

 

 

 

 

L1(U)

HIGH

 

 

 

 

 

 

 

 

 

 

 

L2 (V)

MID

 

 

 

 

 

 

 

 

 

 

 

 

LOW

 

 

 

 

CHOKE

SECONDARY

 

 

 

 

 

THERMOSTAT

THERMOSTAT

J21

 

 

 

 

 

316

255

 

 

 

 

 

315

254

 

 

(+)

 

 

 

G3 217 220 G2 G1 218 G4 216

(-)

314

313

THERMOSTAT

 

222R

W221

 

 

 

 

 

 

PRIMARY

 

 

 

 

 

 

 

J20

 

 

 

 

 

255

 

 

 

 

 

 

254

 

J1

J2

 

J3

 

 

J4

S1

C3

C4

 

 

 

A

 

 

 

250

 

 

H1

H4

C1

 

 

H3

 

 

 

 

C2

 

 

H2

 

 

 

N.C.

 

 

 

 

 

L2

 

DOWNSLOPE CONTROL

TOROID

CURRENT CONTROL

 

 

R4

 

 

R1

270

 

277

 

 

276

 

 

 

248

 

 

 

POSTFLOW CONTROL

 

 

BALANCE CONTROL

R3

 

277A

R2

 

 

 

232A

 

232

 

H1

 

 

 

 

 

211A

R8

211B

211

X10

 

 

T1

 

 

 

 

 

W 209

S

 

 

 

 

 

 

 

18VAC

 

 

 

 

 

 

 

R 210

X9

F

 

 

 

W 221

 

 

 

 

 

X1

 

 

 

 

W 201

X7

 

S

 

R 222

 

 

 

 

 

 

 

 

 

18VAC

 

78VAC

 

 

 

 

 

 

F

 

 

 

 

 

W 204

X8

 

X2

 

 

 

 

 

B 232

X3

 

 

 

 

 

 

232C

 

232B

115VAC

 

 

 

 

 

 

231B

 

 

 

SCR1

 

 

 

X4

 

 

 

 

 

 

 

B 231

 

 

 

G1

(+)

 

 

 

211

X5

 

 

 

218

 

POS

 

 

23VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

212

X6

 

 

 

G2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SCR2

 

 

 

 

 

 

 

 

 

 

 

L1

POLARITY SWITCH MICRO SWITCH

 

 

 

 

 

 

AC

A-C, D-E, B-F

OPEN

 

 

 

 

 

 

DC+

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

CLOSED

 

 

217

 

 

FRONT GANG

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

CLOSED

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D

D2

 

S2A

 

 

 

G3

 

 

 

 

NO

 

 

 

 

 

 

H

 

 

SCR3

 

E

A

 

NC

 

 

 

 

 

 

 

 

 

 

 

 

 

220

 

 

F

NEG

G

 

 

 

 

)-(

 

C

 

 

 

 

 

220A

 

 

 

 

 

 

 

 

POS

 

 

275C

 

 

 

 

 

D1

 

 

 

 

 

 

SCR4

B

X1

 

 

 

 

G4

 

 

 

 

 

 

 

 

 

216

 

X2

S2

 

 

 

 

 

 

NEG

 

POLARITY

 

(REAR VIEW, SHOWN

 

 

 

 

 

SWITCH

 

 

 

 

 

 

 

IN AC POSITION)

 

 

 

 

 

 

 

 

 

 

 

 

 

Diagram (L10747)

ELECTRICAL

TIG 275

all machines covered machine.

N.A.

J5

 

 

 

275C

 

246

 

275B

 

 

277B

 

 

 

249

 

 

245

 

 

312

246

 

 

 

275A

 

312

 

 

275

 

 

S3

251

275

STICK

242

 

 

MODE SWITCH

245

 

 

251

4 STEP TIG

 

R7

252

253

R6

DIAGRAMS

by this

 

 

248

243

2 STEP TIG

 

 

 

 

 

 

 

276

 

 

THERMAL LIGHT

 

 

 

243

277C

Y

247

CONTROL PC BOARD

 

 

 

277

 

 

B 242

TL1

BRASS

 

 

 

 

 

 

 

252

TERMINAL

 

 

J6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

253

 

 

 

 

BYPASS/

STABILIZER

PC BOARD

L10747 7-24-98

manual. The wiring diagram specific to

 

your

N.B.J7A

J8J7

261 260 247 220A 201 212 236 211A 204 232A

234 238 231

235 210 209

D E C F B A

W W B

B

R W

 

 

238

FAN

236

 

234A

235ASV2 SV1

L5

TOROID

236A

A

A

B

B

C

C

D

D

E

E

F

F

REMOTE RECEPTACLE

S

115VAC T2

F

 

10K A-B

 

 

 

AT MINIMUM

 

237

OPTIONAL

 

 

 

REMOTE

OR

TIG

R5

C6

AMPTROL TM

PULSER

 

 

 

 

236B

L3C5

SPARK

GAPT3

L4

ARC STARTER AS'BLY

N.A. CONNECTION IS PIN TO PIN BETWEEN

J4 AND J20 (i.e. PIN 1 TO PIN 1).

N.B. ROBOTIC INTERFACE CONNECTION.

J5

N.C. NOT PRESENT ON EARLIER PC BOARDS.

ELECTRICAL SYMBOLS PER E1537.

7-24-98

G-2

Image 102
Contents Safety Depends on You Square Wave TIGSafety Square Wave TIGElectric Shock can kill ARC Rays can burnFumes and Gases can be dangerous Cylinder may explode if damaged IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications Square Wave TIGSafety Precautions Input Supply Connections Figure A.1Input Reconnect Procedure Return to Section TOC To Section TOCWork Cable Connection User Supplied ConnectorsOutput Connections Table A.1TIG Torch Connection Cylinder could explode if damagedTWIST-MATE Adapter for LA-9 and LA-17 TIG Torch TWIST-MATE Adapter for LW-18 and LW-20 TIG TorchCompleted Assembly Square Wave TIG Table of Contents Operation Section Fumes and Gases can be dangerous OperationElectric Shock can kill Welding Sparks can cause fire or explosionDesign Features Advantages General DescriptionRecommended Processes and Equipment Welding Capability LimitationsControls and Settings Figure B.1 Control PanelTIG Welding Guidelines Welding OperationTIG Welding Twist Mate ElectrodeTIG Welding Sequence of Operation 2-Step TIG Mode Table B.2 Recommended Polarity Settings for TIG WeldingTIG Welding Sequence of Operation 4-Step TIG Mode Advanced TIG Welding Features Hand and Foot Amptrol OperationAC Wave Balance and Auto Balance Hertz Domestic Machines Auxiliary PowerStick Welding 50/60 Hertz European MachinesSquare Wave TIG Table of Contents Accessories Section C-1Section C-1Accessories Included with Machine Optional AccessoriesK963-1, -2 Hand Amptrol Table of Contents Maintenance Section Maintenance Routine and Periodic MaintenanceOverload Protection Control PC Board Component Location and AccessSpark GAP ASSEMBLY, High Voltage Transformer Display PC BOARD, ARC STARTER/BYPASS PC BoardFigure D.2 Major Component Locations Table of Contents Theory of Operation Section Input Power Circuit Theory of OperationOutput Rectification Control Board and Feedback Figure E.3 Output RECTIFICATION, Control Board and FeedbackHigh Voltage / High Frequency Circuit Figure E.4 High Voltage / High Frequency CircuitDC Welding Output Figure E.5 DC Welding OutputAC Welding Output Figure E.7 AC Welding OutputSCR Operation Figure E.9 SCR OperationProtective Circuits Thermal ProtectionOverload Protection Table of Contents Troubleshooting & Repair Section Disable Procedure Troubleshooting & RepairHOW to USE Troubleshooting Guide High Voltage / High Frequency can damage test equipmentPC Board Troubleshooting Procedures PC Board can be damaged by static electricityTroubleshooting Guide Observe Safety GuidelinesDetailed in the beginning of this manual Perform the SCR Bridge Test Troubleshooting & Repair Connections Troubleshooting Guide Troubleshooting & Repair TIG Welding Problems Electric Shock Can KillTroubleshooting & Repair To Technical Specifications Stick Welding Problems Function Problems 15F-15Function Problems Installation Troubleshooting & Repair High Frequency Circuit Disable Procedure Test DescriptionMaterials Needed High Frequency Circuit Disable Procedure ProcedureT1 Main Transformer Test Test Procedure T1 Main Transformer TestReplace the case side covers Test Points Primary WINDINGS1GAS Water Solenoid Test GAS Water Solenoid Test Figure F.3 GAS Solenoid LocationStatic SCR Test Static SCR Test Figure F.4 Plug J1 Location on Control BoardAssembly Removal and Replacement Active SCR Test DescriptionActive SCR Test Figure F.6 Plug J1 Location on Control BoardFigure F.7 Active SCR Test Setup SCR Bridge Assembly Removal and Replacement AC TIG Mode Scope SettingsNormal Open Circuit Voltage Waveform DC TIG Mode AC Stick Mode DC Stick Mode Typical Output Voltage Waveform Machine Loaded Machine Loaded to 255 AmpsAT 30 VAC Machine Loaded to 275 Amps AT 31 VDCAC Stick Mode DC Stick Mode 50 V/Div High Voltage Transformer Removal Replacement Replacement Removal ProcedureHigh Voltage Transformer Removal Replacement Procedure Figure F.10 High Voltage Transformer Mounting InsulatorsSCR Bridge Assembly Removal and Replacement SCR Bridge Assembly Removal and Replacement Using the 3/8 nut driver, remove the caseFigure F.13 SCR Bridge Connections Refer to Figures F.11 F.13 Polarity Switch Removal and Replacement Polarity Switch Removal and Replacement Allen Screw Control Knobs Polarity Switch HandlePOS Micro Switch Leads Square Wave TIG 253Figure F.16 Polarity Switch Wiring Diagram Replacement Procedure For Steps 9--17, see Figure F.15 and F.16Description Main Transformer and Output Choke Assembly Removal and ReplacementFigure F.18 Transformer Connections Figure F.19 Polarity Switch Connections Choke NEG POS Micro Switch LeadsReassembly Procedure Refer to Figures F.17 F.19Input Idle Amps Minimum Acceptable Output Voltage AT Maximum Output SettingRetest After Repair Open Circuit VoltagesSquare Wave TIG Section G Electrical WiringDiagram L10747 TIGDiagram L10747-2 SquarewaveElectrical Diagrams Control Board Schematic G3358-1Control Board Schematic G3358-2 OCI4 TRI3 MT2Display Board Schematic L10768 Return to Section Return to Section TOC To Section TOCBypass Display Board Layout L10770-1 L10770-17-24-98XXX Bypass Board Layout L10121-1 10G-10Square Wave TIG

SVM141-A specifications

The Lincoln Electric SVM141-A is a cutting-edge solution designed for operators requiring precision, efficiency, and versatility in their welding applications. This machine is known for its compact form but robust feature set, making it an ideal choice for both professional welders and industrial applications.

One of the standout features of the SVM141-A is its advanced inverter technology. This innovation allows for a stable arc, providing consistent results even under varying conditions. The machine minimizes power consumption, making it energy-efficient without compromising performance. The inverter technology also supports a wider input voltage range, making the SVM141-A suitable for use in diverse environments and job sites.

Another key characteristic is its multi-process capability. The SVM141-A supports MIG, stick, and TIG welding processes, providing flexibility for various welding tasks. This versatility enables operators to tackle different materials, including mild steel, stainless steel, and aluminum, making it a valuable tool for numerous projects.

The user-friendly interface of the SVM141-A includes an intuitive digital display, which allows welders to adjust settings with ease. This feature is crucial for ensuring the right configurations for specific welding tasks, reducing the chances of errors and enhancing the overall finish of welds.

Safety is also a priority with the Lincoln Electric SVM141-A. It comes with built-in safety features such as overheat protection and automatic shutdown, ensuring operator safety and equipment longevity. The machine's lightweight design enhances portability, allowing it to be used in various workspaces with ease.

Durability is another hallmark of the SVM141-A. Constructed with high-quality materials, the machine is designed to withstand the rigors of demanding work environments. This ensures reliability over time, providing consistent performance even under heavy use.

In summary, the Lincoln Electric SVM141-A is a versatile, efficient, and user-friendly welding machine that appeals to a wide range of users. Its advanced inverter technology, multi-process capabilities, safety features, and durable construction make it a strong contender in the welding market, suitable for both professionals and hobbyists alike. Whether it’s for light fabrication, repairs, or industrial welding tasks, the SVM141-A meets diverse needs with precision and reliability.