Lincoln Electric SVM168-B service manual Rotor Field Feedback and Auxiliary Power

Page 37

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E-3

 

THEORY OF OPERATION

 

 

E-3

 

FIGURE E.3 – ROTOR FIELD FEEDBACK AND AUXILIARY POWER

 

 

 

 

RANGE

 

 

 

 

 

 

 

SWITCH

 

 

 

 

 

 

 

 

AC

CHOKE

POLARITY

ELECTRODE

 

 

REACTOR

CV

OUTPUT

TERMINAL

 

 

AC BRIDGE

 

SWITCH

 

 

 

 

TAP

 

 

 

 

 

 

 

STATOR

 

 

 

WORK

 

MECHANICAL

 

 

 

TERMINAL

 

 

 

 

 

 

 

ROTAT ION

ROTOR

 

 

 

 

 

STARTER

ENGINE

ROTOR

 

 

 

 

SLIP

 

 

 

 

 

FLYWHEEL

RINGS

 

 

 

 

 

 

ALTERNATOR

 

STATOR

 

 

 

 

 

IDLER

 

 

 

 

 

 

SOLENOID

 

 

 

 

 

 

TOC

TOC

BATTERY

FIELD

 

CAPACITOR

 

OUTPUT

 

CONTROL

 

PRINTED CIRCUIT

 

BOARD

115 & 230VAC

RECEPTACLES

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ROTOR FIELD FEEDBACK AND AUXILIARY POWER

The AC voltage developed in the field winding is fed to the full wave field bridge. The DC output of the bridge is filtered by the field capacitor and controlled by the printed circuit board according to the output control setting. This filtered and controlled voltage is fed to the rotor winding via the brush and slip ring configura- tion. As the feedback voltage is increased or de- creased, the outputs of the weld and auxiliary windings are increased or decreased.

When full field voltage is applied to the rotor and the engine is running at high speed (3700 RPM), a 230 AC voltage is developed in the stator auxiliary winding. This winding is tapped to provide 115 VAC. The two voltages, (115 VAC and 230 VAC), are connected to the appropriate receptacles and offer 9000 watts (total) of continuous AC power.

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RANGER® 10,000 & RANGER® 10,000 PLUS

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Contents Ranger 10,000 /10,000 Plus Powered equipment SafetyFor Engine Fumes and Gases ARC Rays can burnCylinder may explode If damaged Welding and Cutting Sparks can cause fire or ExplosionIii Précautions DE Sûreté Master Table of Contents for ALL Sections Installation Section Table of ContentsSection A-1 Height Width Depth Weight InstallationHorsepower Operating Speed RPM Spark Arrester Safety PrecautionsMachine Grounding TowingGasoline PRE-OPERATION ServiceVehicle Mounting Can cause fire or explosionTotal Combined Length of Electrode and Work Cables Welding Output CablesAngle of Operation LiftingInstructions Connection of Lincoln Electric Wire FeedersStacking Welder Operation120/240 Volt Dual Voltage Receptacle Auxiliary PowerDuplex Receptacles Motor StartingNot USE These Devices With a Ranger 10,000 These Devices Without Additional Resistive Type LoadsStandby Power Connections Simultaneous Welding and PowerFigure A.1 Ranger 10,000 & Ranger 10,000 Plus Section B-1 Operation SectionOperation Operation Engine SwitchWelder Controls Function and Operation Range Switch Polarity SwitchKohler Honda Robin / Subaru 20 H.P. Command Control DialBREAK-IN Period STARTING/SHUTDOWN InstructionsStarting the Engine Stopping the EngineStick Constant Current Welding Wire Feed Welding Processes Constant VoltageTIG Constant Current Welding Summary of Welding Processes Start Switch Wire FEED, LN-15Section C-1 Accessories SectionOptional Equipment Field Installed AccessoriesStick Recommended EquipmentTIG Welding Plasma CuttingRanger 10,000 & Ranger 10,000 Plus Section D-1 Maintenance SectionSafety Precautions MaintenanceKohler Honda OIL Filter Change AIR Cleaner and Other MaintenanceBattery Engine AdjustmentsOverspeed is Hazardous Slip RingsOil Filter Pre-CleanerAir Filter ElementFigure D.1 Major Component Location Section E-1 Theory of Operation SectionTheory of Operation Theory of Operation BATTERY, STARTER, ENGINE, ROTOR, STATOR, and Idler SolenoidFigure E.3 Rotor Field Feedback and Auxiliary Power Rotor Field Feedback and Auxiliary PowerFigure E.4 Weld WINDING, REACTOR, and Range Switch Weld WINDING, REACTOR, Range SwitchOutput BRIDGE, Choke Polarity SWITCH, and Output Terminals Ranger 10,000 & Ranger 10,000 Plus Section F-1 Troubleshooting & Repair SectionHOW to USE Troubleshooting Guide Troubleshooting & RepairElectric Shock PC Board Troubleshooting ProceduresOutput Problems Troubleshooting GuideOutput Problems Field Winding Voltage Test Adjustment Test Troubleshooting Guide Output Problems Engine Problems Make sure the leads are looped Charging Circuit Test Welding Problems Ranger 10,000 & Ranger 10,000 Plus Test Description Rotor Voltage TestMaterials Needed Test Procedure Rotor Resistance Test Figure F.2 Location of Rotor Slip Rings Rotor Resistance TestTroubleshooting & Repair Ranger 10,000 & Ranger 10,000 Plus Auxiliary and Field Winding Test To test the 115 VAC winding Auxiliary and Field Winding TestTo test the 230 VAC winding To test the field winding Ranger 10,000 & Ranger 10,000 Plus Output Rectifier Bridge Test Output Rectifier Bridge Test 26TROUBLESHOOTING & REPAIRF-26Figutpure F.4 Locationctifof Output Rectifier Leads Charging Circuit Test Figure F.5 Location of Voltage Regulator Charging Circuit TestEngine Throttle Adjustment Test Figure F.6 Blower Paddle Marked for STROBE-TACH Method Engine Throttle Adjustment TestFigure F.7 Oscilloscope Method Normal Open Circuit Voltage Waveform 115 VAC Supply Scope SettingsHigh Idle no Load Output Control AT Maximum Machine Loaded Typical DC Weld Output Waveform CV ModeMachine Loaded to 200 Amps AT 20 VDC Machine Loaded to 200 Amps AT 26 VDC Typical DC Weld Output Waveform CC ModeMachine Loaded to 225 Amps AT 25 VDC Typical AC Weld Output WaveformAbnormal Open Circuit Weld Voltage Waveform CV Mode Abnormal Open Circuit DC Weld Voltage Waveform Normal Open Circuit Weld Voltage Waveform CV Mode Normal Open Circuit DC Weld Voltage Waveform CC Mode Normal Open Circuit AC Weld Voltage Waveform Ranger 10,000 & Ranger 10,000 Plus Description Brush Removal and ReplacementProcedure Brush Removal and ReplacementFigure F.9 Brush LEADS/BRUSHES Retained with Cable TIE Slip RingsRanger 10,000 & Ranger 10,000 Plus Printed Circuit Board Removal Replacement Figure F.10 Printed Circuit Board Location Printed Circuit Board Removal and ReplacementPrinted Circuit Board Removal ReplacementRanger 10,000 & Ranger 10,000 Plus Output Rectifier Bridge Removal Replacement Output Rectifier Bridge Removal Remove the case top, then reinstall the fuel capSection TOC Ranger 10,000 & Ranger 10,000 Plus Instructions ENGINE/ROTOR Removal and ReplacementFigure F.12 Component LOCATIONS, ENGINE/ROTOR Removal ENGINE/ROTOR RemovalEngine and Rotor Removal Procedure Figure F.13 Engine and Rotor Removed from Stator THRU-BOLT Rotor Removal ProcedureReassembly Procedure Replacement KIT S20788Retest After Repair Electrical Diagrams Electrical Diagrams SectionSection G-1 Wiring Diagram Code 11041 only -M20226 Electrical DiagramsRanger 10,000 Honda Wiring Diagram Code 11095 only M20301Ranger 10,000 Wiring Diagram Code 11398 M21269 Ranger 10,000 Plus L13105 Schematic Entire Machine Codes 11395 and 11398 L13105L13103 Schematic Entire Machine CDE 11394 L13103Schematic Entire Machine Code 11095 & 11253 only L12257 L12249 Schematic Entire Machine Code 11151 only L12249-1Electrical Diagrams Electrical Diagrams
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