Lincoln Electric SVM169-A service manual Wiring Diagram Entire Machine G4549, Precision TIG

Page 98

TOC

TOC

G-2

ELECTRICAL DIAGRAMS

G-2

WIRING DIAGRAM - ENTIRE MACHINE - (G4549)

 

 

Return to Section

to Section TOC

Return to Master

to Master TOC

A

A

B

B

W (L2)

B

(L1)

S1

GPOWER SWITCH

C2

C1

H3

H2

H1

313

314

S4

CHOKE

VOLTAGE RECONNECTION

SEE RATING PLATE FOR SPECIFIC VOLTAGES

230or 400-415 or 575 VOLT CONNECTION (AS SHOWN & AS SHIPPED FROM FACTORY)

H1 and H3 (HIGH) TO POWER SWITCH.

H2 NOT CONNECTED; INSULATE.

208or 380 or 460 VOLT CONNECTION

H1 and H2 (LOW) TO POWER SWITCH.

H3 NOT CONNECTED; INSULATE.

C1 AND C2 MUST ALWAYS BE CONNECTED ACROSS TRANSFORMER PRIMARIES

380V AND ABOVE

G

CONNECT GREEN LEAD TO GROUND PER

BNATIONAL AND LOCAL ELECTRICAL CODE

(L1)

 

CONNECT BLACK AND WHITE LEADS

W

 

TO SUPPLY CIRCUIT

 

 

 

 

(L2)

 

 

 

 

 

 

 

 

 

208V/230V ONLY

TO GROUND PER

 

NATIONAL ELECTRIC CODE

INPUT PLUG (208V/230V ONLY)

245 244

10K A-B

AT MINIMUM

OPTIONAL

REMOTE

AMPTROLTM

C

C

L5

D

D

 

E

E

 

F

 

 

REMOTE

RECEPTACLE

236 232 260 235

240 216A

245 244

209 210

312 311

201 204 314 313

G4 220 G2 G1 216 G3 218 217

4 3 2 1

1211 10 9 8 7 6 5 4 3 2 1

8 7 6 5 4 3 2 1

J4

J3

J2

 

AUTO

MODE

 

BALANCE G

SWITCH

 

LED

 

236

R3231A

236A237

C4

H3 (HIGH)

H2 (LOW)

H1

P7

J7

4 3 2 1

G4

G3 G2 G1

 

 

 

R4 R5

220220A 218A

220A

SCR1

TOC

TOC

 

FRONT

240

GANG

AC

D

 

 

A

 

E F

C

 

 

B

S2

POS

POLARITY

SWITCH

 

POLARITY SWITCH

MICRO SWITCH

AC

A-C, D-E, B-F

OPEN

DC+

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

CLOSED

DC-

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

CLOSED

REAR GANG

MICRO-SWITCH

 

H

 

NO

 

 

NC 312A

312

 

 

G

 

 

 

DC

S2A

311A

311

 

 

(REAR VIEW,

SHOWN IN AC POSITION)

 

 

 

G

R

 

 

AC

TIG LED

STICK LED

 

 

BALANCE

 

 

 

 

CONTROL

 

 

 

 

PULSE

DIGITAL

 

 

DISPLAY

 

 

CONTROL

 

 

 

 

 

 

PULSE

 

 

 

 

FREQ G

 

1

 

 

LED

 

 

 

THERMAL

J1 2

 

 

 

 

 

 

LED

Y

A

1

POSTFLOW

 

 

CONTROL

 

 

C

2

 

 

115VAC

W 221

T2

 

R 222

L4

 

201 X3

TRIGGER 18VAC

204 X4

209 X5

POWER 18VAC

210 X6

X1

78VAC

X2

X8 232

115VAC

X7 231

T1

217

 

 

AC

 

 

SCR2

260

231A

 

 

 

 

G2

218

 

 

 

 

 

218A

 

 

)

(

 

 

 

+

 

FAN

 

 

 

 

115VAC

 

 

G3

 

 

 

216

SCR3

 

 

 

 

 

 

216A

 

 

X2

 

 

G4

 

 

 

SCR4

SHUNT

to Section

Return to Master

284

285

B

3

J5

OUTPUT

 

D

4

CONTROL

1

5

 

 

 

 

2

E

6

 

J6

 

3

 

 

 

CONTROL PC BOARD

4

 

 

 

 

L1

_

)

(

W 221

POS

D1

 

R 222

 

 

 

DC

231

 

GAS VALVE

 

 

 

 

235

 

 

SV1

Return

to Section TOC

to Master TOC

WORK

ELECTRODE

L3 L2

239

238

SPARK

GAP

ARC

STARTER

AS'BLY C3

T3

BYPASS/

STABILIZER

PC BOARD

285

284

284A 284B

R2

 

R1

 

 

 

285A 285B

C1,C2

BY-PASS CAPACITORS, .0047/250VAC

C3

HIGH VOLTAGE CAPACITOR, .0025/10kV

C4

PHASE SHIFT CAPACITOR, 15/250VAC

C5,C6

BY-PASS CAPACITORS, .22/400VDC

CB1

CIRCUIT BREAKER, 10A

D1

FREE WHEELING DIODE

L1

OUTPUT INDUCTOR (CHOKE)

L2,L3

HIGH FREQUENCY INDUCTORS

L4,L5

RF TOROID CHOKES

R1,R2

HOLDING RESISTORS, 100/100W

R3

PHASE SHIFT RESISTOR, 200/100W

R4,R5

MICRO START RESISTORS, 12/100W

S1

INPUT POWER SWITCH

S2

POLARITY SWITCH

S2A

MICROSWITCH ON POLARITY SWITCH

S4

MAIN CHOKE THERMOSTAT

SCR1,2,3,4

MAIN POWER SCR'S

SV1

GAS SOLENOID VALVE, 115VAC

T1

MAIN TRANSFORMER

T2

HIGH VOLTAGE TRANSFORMER

T3

HIGH FREQUENCY TRANSFORMER

 

 

 

COMPONENT VALUE

LEAD COLORING CODE:

UNITS:

 

 

 

RESISTORS:

B-BLACK

R-RED

 

OHMS/WATTS

G-GREEN

W-WHITE

CAPACITORS:

 

 

 

MFD/VOLTS

CONNECTOR PIN NUMBERS:

 

 

EXAMPLE: THIS IS PIN 7

1 2 3

7

OF CONNECTOR J4

 

 

8

14

 

 

J4

LATCH

 

 

 

VIEW OF CONNECTOR ON PC BOARD ELECTRICAL SYMBOLS PER E1537.

Return

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G4549 B

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.

PRECISION TIG 185

Image 98
Contents Precision TIG Safety Electric Shock can kill Safety Welding Sparks can cause fire or explosionPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Table of Contents Installation SectionInstallation Input Single Phase onlyModel Height Width Depth Weight K2345-2 Input at Rated OutputSafety Precautions Select Suitable LocationInput Connections Connections for TIG Gtaw Welding Input Reconnect ProcedureOutput Connections TIG Torch ConnectionShielding GAS Connection Remote Control ConnectionWork Cable Connection Precision TIG Operation Section Section BOperation Product Description Recommended Processes and EquipmentControls and Settings Control FunctionalityPulse TIG Control Welding in TIG ModeOperating Steps Remote Control Operation Benefits of the Precision TIG 185 DesignWelding in Stick Mode Recommended Electrode Amperage Ranges Precision TIGPrecision TIG Accessories Section Table C.1 AccessoriesFactory Installed Options Field Installed Options K2348-1 Under-Storage CartPrecision TIG Maintenance Section Section DSpark GAP Adjustment MaintenanceRoutine and Periodic Maintenance Figure D.2 Location of Maintenance Components Return to Section TOC Theory of Operation Section Section EGeneral Description Input Power CircuitTheory of Operation Output Rectification Feedback Control Figure E.3 Control Board and Output Feedback ControlHigh Voltage / High Frequency Circuit Figure E.4 High Voltage/High Frequency CircuitDC Welding Output Figure E.5 DC Welding Current GenerationAC Welding Output Figure E.6 AC Square Wave Welding Current GenerationSCR Operation Figure E.7 SCR OperationOverload Protection Protective CircuitsThermal Protection Troubleshooting & Repair Section Section FTroubleshooting & Repair High Voltage / High Frequency can damage test equipmentPC Board Troubleshooting Procedures WorkstationsProblems Possible Areas Recommended Symptoms Course of ActionPossible Areas Recommended Symptoms Problems Possible Areas Check the welding cables and or TIG Mode Problems Troubleshooting & Repair TIG Welding Problems Problems Possible Areas Electric Shock can Problems Possible Areas Recommended Symptoms Stick Welding Problems High Frequency Circuit Disable Procedure Test DescriptionProcedure Figure F.1 Spark GAP AssemblyT1 Transformer Test Test Procedure T1 Transformer TestReturn to Section Section TOC Primary Windings Primary VoltagesPrecision TIG Static SCR Test Static SCR Test Assembly Removal and Replacement Precision TIG Active SCR Test Active SCR Test Figure F.6 SCR Gate Locations Precision TIG Normal Open Circuit Voltage Waveform AC TIG ModeScope Settings DC TIG Mode AC Stick Mode DC Stick Mode Typical Output Voltage Waveform Machine Loaded Machine Loaded to 180 Amps AT 16VDCDC TIG Mode Machine Loaded to 180 Amps AT 26VDC DC Stick Mode 50 V/Div Precision TIG Troubleshooting and Repair SCR Bridge Assembly Removal and Replacement ProcedureSCR Bridge Assembly ProcedureFront Panel Mounting Screws 42TROUBLESHOOTING & REPAIRF-42 Figure F.9 Plug J2 on Control Board43TROUBLESHOOTING & REPAIRF-43 Replacement ProcedurePrecision TIG Polarity Switch Removal and Replacement Procedure Polarity Switch Removal ProcedureReplacement Procedure Precision TIG High Voltage Transformer Removal and Replacement Procedure High Voltage Transformer Transformer Secondary Leads Precision TIGFigure F.12 High Voltage Transformer Mounting Insulators Precision TIG Nutdriver Wrench Wire cutters Perform the SCR Bridge Assembly Removal Procedure Assembly Replacement Procedure Precision TIG Input Idle Amps Troubleshooting and RepairRetest After Repair Recommended Meters for Machine Output TestsPrecision TIG Electrical Diagrams Section Wiring Diagram Entire Machine G4549 Precision TIGSchematic Entire Machine G4588 G4588Schematic Control PC Board G4550-1B4-1 Schematic Control P.C. Board G4550-1B4-2 Schematic Control P.C. Board G4550-1B4-3 PC Board Assembly Control G4551-1 G4551SVM Error Reporting Form