Lincoln Electric SVM136-A service manual Snubber PC Board M15370-3 Schematic

Page 101

G-7

G-7

ELECTRICAL DIAGRAMS

Return to Section TOCReturn to Section TOCReturn to Section TOCReturn to Section TOC

Return to Master TOCReturn to Master TOCReturn to Master TOCReturn to Master TOC

Snubber PC Board (M15370-3) Schematic

WITH PUBLISHED STANDARDS

MATERIAL TOLERANCE ("t") TO AGREE

ON ALL ANGLES IS + .5 OF A DEGREE

ON 3 PLACE DECIMALS IS + .OO2

ON 2 PLACE DECIMALS IS + .O2

ON HOLES SIZES PER E-2056

UNLESS OTHERWISE SPECIFIED TOLERANCE

R1

J5

28341576

221204222223220225224

S19687

NOTE: Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting. PC Board repairs will invalidate your factory warranty. Individual Printed Circuit Board

Components are not available from Lincoln Electric. This information is provided for reference only. Lincoln Electric discourages board level troubleshooting and repair since it may com-

promise the quality of the design and may result in danger to the Machine Operator or Technician. Improper PC board repairs could result in damage to the machine.

38J38J

130V130V

10

5W

400V

.68

C1C2C3TP4

J5

12-20-96F

3-8-91G

Ch’ge.Sht.No.

TP3

R2

130V

10

5W

400V

.68

38JGENERAL INFORMATION

J5

R3

10

5W

400V

.68

DR.

CLEVELAND, OHIO U.S.A

THE LINCOLNELECTRIC

J5J5

MCW

80J

150V

TP6

DATE

SCALE

OP AMPS = LM124 (UNLESS OTHERWISE SPECIFIED)

CAPACITORS = MFD/VOLTS RESISTORS = OHMS,1/4 WATT (UNLESS OTHERWISE SPECIFIED) DIODES= 1 AMP/400 VOLT (UNLESS OTHERWISE SPECIFIED)

3-26-90

ELECTRICAL SYMBOLS PER E1537

NONE

.

CO.

= COMMON CONNECTION FILENAME: S19687 3EA

CHK

J5

.

J5

SUP’S’D’G.

SUBJECT

TYPE

EQUIP.

600V

C5 .05

600V

C4 .05

J5

SHT NO.

SNUBBERSCHEMATIC

IDEALARC DC400

.

S

160J

320V

TP5

IDEALARC CV-400

19687

TP1TP2

160J

320V

Image 101

Contents Idealarc CV-400 California Proposition 65 Warnings SafetyElectric Shock can kill Cylinder may explode if damaged Sûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications Idealarc CV-400 InstallationLifting Safety PrecautionsLocation and Ventilation Input Supply Connections Ground ConnectionReturn to Input Wire and Fuse SizeConnect Electrode and Work Leads to Output Terminals Reconnect Procedure Output ConnectionsFigure A.5 Output Terminal Connections Connect Wire Feeders Table of Contents Operation Section Operating Instructions Safety InstructionsOperation Design Features Operational Features and ControlsGeneral Description Recommended ProcessesLimitations Welding CapabilityFigure B.1 Case Front Controls Controls and SettingsLocal Control Remote ControlWelding Operation Overload Protection Auxiliary PowerIdealarc CV-400 Table of Contents Accessories Field Installed Options OPTIONS/ACCESSORIESFactory Installed Options Connecting the NA-3 to the Idealarc CV-400 Automatic Wire FeedersFeederterminal Connecting the NA-5 to the Idealarc CV-400Accessories Connecting the LN-7 to the Idealarc CV-400 Terminal Strip Semiautomatic Wire FeedersConnecting the LN-8 or LN-9 to the Idealarc CV-400 Idealarc CV-400 Table of Contents Maintenance Return to Return to Section TOC Safety Precautions Routine and Periodic MaintenanceFigure D.1 Idealarc CV-400 Table of Contents Theory of Operation Section Input Line VOLTAGE, Contactor and Main Transformer Theory of OperationOutput CONTROL, Rectification and Feedback Figure E.4 CV-400 Trigger and Thermal Light Circuit Protective Devices CircuitsFigure E.5 SCR Operation SCR OperationIdealarc CV-400 Table of Contents Troubleshooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairElectric Shock can kill PC Board Troubleshooting ProceduresOutput Problems Troubleshooting GuideOutput Problems SCR/Diode Perform the SCR/Diode Bridge SCR/Diode Rectifier Bridge Test Welding Problems Materials Needed Control Transformer T2 Voltage TestDescription Control Transformer T2 Voltage Test Test ProcedureRight Side View Input Contactor Test Input Contactor Test Figure F.4 Input Contactor Test Connections Test for Contact ContinuityMain Transformer T1 Voltage Test Main Transformer T1 Voltage Test Figure F.6 Main Secondary Lead Test Points Blank Main Transformer T1 Voltage Test Static SCR/DIODE Rectifier Bridge Test Static SCR/DIODE Rectifier Bridge Test SCR Anode Remove ANY Insulating Paint Cathode SCR Active SCR Test Active SCR Test Figure F.15 Heat Sink Test Points Figure F.16 SCR Tester Circuit and SCR Connections Normal Open Circuit Voltage Waveform Maximum Output Setting no LoadTypical Output Voltage Waveform Machine Loaded Typical SCR Gate Voltage Waveform Maximum Output Setting no LoadONE Output SCR not Functioning Abnormal Output Voltage Waveform Machine LoadedDescription Input Contactor CR1 CLEANING/REPLACEMENTContactor Replacement Procedure Cleaning ProcedureFAN Motor and Blade Removal and Replacement Procedure FAN Motor and Blade Removal and ReplacementSCR/DIODE Rectifier Assembly Removal and Replacement Removal and Replacement SCR/DIODE Rectifier AssemblySCR Removal and Replacement SCR Removal and Replacement Figure F.21 1/2 Wide Leaf Spring Procedure for the 1/2 Inch Wide SpringClamping Procedure For 1/4-20 CAP Screws Clamping Procedure For 1/4-28 CAP ScrewsInch Wide Spring Procedure forAfter Replacing the SCRs Mounting of Stud Type Diodes To Aluminum Heat Sinks To Aluminum Heat Sinks Mounting of Stud Type DiodesMain Transformer Removal and Replacement Removal of Lift Bail Main Transformer Removal & ReplacementFigure F.26 Choke Removal Removal of Choke and TOP Iron AssemblyFigure F.27 Epoxy MIX Application Areas Reassembly of Transformer CoilsFigure F.28 Coil Lead Placement Figure F.30 Primary Thermostat Location Reassemble the Lift Bail Reassembling the Main Transformer Into the MachineInput Idle Amps and Watts Retest After RepairOpen Circuit Voltages Welding Output Load TestIdealarc CV-400 Section G Electrical DiagramsWiring Diagram Codes 10084, 10085 Wiring Diagram Code Control PC Board G2629-1 Layout Control PC Board G2629-1 Schematic Snubber Snubber PC Board M15370-3 Schematic Idealarc CV-400