Lincoln Electric SVM 113-A service manual Table of Contents Theory of Operation Section

Page 35

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Return to Master TOC

Section E-1Section E-1

TABLE OF CONTENTS

-THEORY OF OPERATION SECTION-

Theory of Operation

Section E

Power Supply Operation

E-2 - E-3

Engine, Excitation, Rotor and Stator

E-2

Rotor Field Feedback, Auxiliary Power and Engine Idle Control

E-3

Auxiliary Power Overcurrent Protection

E-3

Weld Winding, Output Rectifier and Choke

E-4

FIGURE E.1 – WELDANPOWER 125 BLOCK LOGIC DIAGRAM

 

CHOKE

 

POSITIVE

 

OUTPUT

OUTPUT

TERMINAL

 

RECTIFIER

 

BRIDGE

 

Return to Master TOC

Return to Master TOC

 

 

 

 

STATOR

ENGINE

MECHANICAL

 

 

 

 

ROTATION

 

 

 

 

 

ROTOR

ROTOR

 

 

SLIP

 

 

 

RINGS

 

MAGNETO

 

 

 

 

 

 

CAPACITORS

 

STATOR

IDLER

 

 

 

 

SOLENOID

 

 

 

 

IDLER

+

 

 

P.C. BOARD

 

 

115 AND 230 VAC

RHEOSTAT

 

RECEPTACLES

 

 

 

 

 

 

 

FIELD

 

 

 

 

RECTIFIER

 

 

 

 

BRIDGE

 

 

 

IDLE

HOUR

 

 

 

SWITCH

 

 

 

 

METER

 

NEGATIVE OUTPUT TERMINAL

CURRENT

TRANSFORMER

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Page 34 Page 36
Contents Weldanpowertm California Proposition 65 Warnings SafetyElectric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications Weldanpower InstallationStoring Safety PrecautionsLocation and Ventilation PRE-OPERATION Engine Service Welding Cable Connections Electrical Output ConnectionsPlugs and HAND-HELD Equipment Auxiliary Power ReceptaclesMachine Grounding Circuit Breakers Premises WiringThese Devices Without Table of Contents Operation Section General Description Safety InstructionsOperation Operating InstructionsWelding Capability Operational Features and ControlsDesign Features Advantages Recommended ApplicationsWELDER/GENERATOR Controls Controls and SettingsFigure B.2 Gasoline Engine Controls Gasoline Engine ControlsStarting the Engine Engine OperationBefore Starting the Engine For Best Engine Starting Stopping the EngineLOW OIL Sensing Welding OperationBREAK-IN Period General InformationTIG Welding To USE the Weldanpower 125 for WELD- INGTable B.2 Electrode Selection Guide To USE the Weldanpower 125 AS AN Auxiliary Power Supply Auxiliary PowerTable B.3 Generator Power Applications Table of Contents Accessories Briggs and Stratton Accessories OPTIONS/ACCESSORIESLincoln Electric Accessories Table of Contents Maintenance Engine Maintenance Routine and Periodic MaintenanceMaintanence Figure D.3 Clean Finger Guard Figure D.5 SET Spark Plug GAP Table D.2 Engine Maintenance Parts WELDER/GENERATOR MaintenanceFigure D.6 Major Component Locations Table of Contents Theory of Operation Section Idler Board ENGINE, EXCITATION, Rotor and StatorAuxiliary Power Overcurrent Protection Rotor Field Feedback Auxiliary Power Engine Idle ControlFigure E.4 Weld WINDING, Output Rectifier and Choke Weld WINDING, Output Rectifier and ChokeTable of Contents Trouble Shooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairElectric Shock can kill PC Board Troubleshooting ProceduresOutput Problems Troubleshooting GuideOutput Rectifier Troubleshooting & Repair Perform the Engine Throttle Engine Problems Main Stator Winding Test Engine Throttle Adjustment Troubleshooting & Repair Weldanpower Materials Needed Rotor Voltage TestTest Description Rotor Voltage Test Test ProcedureRotor Resistance Test Rotor Resistance Test Figure F.3 Brushes Retained with Cable TIE Output Rectifier Bridge Test Output Rectifier Bridge Test Main Stator Test Main Stator Test Figure F.6 Main Stator Molex Plug Test Points Rotor Flashing Circuit Test Rotor Flashing Circuit Test WP125 Idler Engine Throttle Adjustment Test Test Procedure Figure F.12 Idle Speed Adjustment Screw Locations Figure F.13 LOW Idle Adjustment NUT on Idler Solenoid TOC High Idle no Load Output Control AT Maximum Scope SettingsNormal Open Circuit Weld Voltage Waveform Normal Open Circuit Voltage Waveform 115 VAC Supply Machine Loaded to 125 Amps AT 25 VAC Typical Weld Output WaveformMachine Loaded Abnormal Open Circuit Weld Voltage Waveform Description Brush Removal and ReplacementFigure F.14 Brushes Retained with Cable TIE ProcedureProcedure Rheostat Removal and Replacement Rheostat Removal and Replacement Field Capacitor Removal and Replacement Field Capacitor Removal and Replacement Field Diode Bridge Removal and Replacement Field Diode Bridge Removal and Replacement Figure F.18 Field Diode Bridge Location Idler Printed Circuit Board Removal Replacement Carefully remove the board Output Rectifier Bridge Removal Replacement Output Rectifier Bridge Removal and Replacement Troubleshooting & Repair Output Choke Removal and Replacement Output Choke Removal and Replacement Section TOC Instructions STATOR/ROTOR Removal and ReplacementStator Removal Procedure Troubleshooting & Repair Reassembly Procedure Rotor Removal ProcedureFigure F.24 Checking ROTOR-STATOR AIR GAP Feeler Gauge Troubleshooting & Repair WELDER/GENERATOR OUTPUT1 Auxiliary Power Receptacle OUTPUT1Retest After Repair Engine OutputWeldanpower Table of Contents Diagrams Section Wiring Diagram Code 10158 Idler PC Board M17578 DiagramsSchematic Dimension Print Weldanpower Weldanpower M17578-1 M17578 Idler PC BoardDescription M17578 Idler PC Board Bill of MaterialsWeldanpower
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