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Lincoln Electric SVM133-B service manual Typical Exciter Voltage Feedback Waveforms

Models: SVM133-B

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F-79

F-79

TROUBLESHOOTING & REPAIR

TYPICAL EXCITER VOLTAGE FEEDBACK WAVEFORMS

1 V

2

ms

This is the typical waveform output from each of the three phases from the Exciter Feedback Module (L10953-1) at high idle/no load under normal operation. The peak should measure between 3.5 - 4.5 Vdc, and the period should measure approxi- mately 8.0 - 9.0 ms (make sure that the machine is set up to the proper high idle rpm before making this measurement by performing the Engine Throttle Adjustment Test). This waveform can be viewed at the following points on the control board:

J4 pin 1 to pin 7

J4 pin 2 to pin 7

J4 pin 3 to pin 7

SCOPE SETTINGS

Volts/Div	1V/Div.
Horizontal	2ms/Div.
Coupling	DC
Trigger	Internal

COMMANDER 400

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Lincoln Electric SVM133-B service manual Typical Exciter Voltage Feedback Waveforms

Contents

Commander TM Commander SafetyARC Rays can burn Electric Shock can killFumes and Gases can be dangerous Cylinder may explode if damaged Welding Sparks can cause fire or explosionIii Sûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation Section HEIGHT2 Width Depth Weight Welding Range Open Circuit Voltage Auxiliary Power1Bore x Stroke Duty Cycle Welding Output Volts at Rated AmpsLocation and Ventilation Safety PrecautionsStoring StackingLifting PRE-OPERATION Engine ServiceHigh Altitude Operation TowingBattery Acid can Burn Eyes and Skin Battery Connections FuelMuffler Outlet Pipe Fuel CAPElectrical Output Connections Cable Installation and Cable SizesWelding Cable Connections Machine Grounding Auxiliary Power ReceptaclesPower Table of Contents Operation Section Operating Instructions Safety InstructionsGeneral Description Recommended Applications Design FeaturesFor Wire Welding Additional Design FeaturesWelding Capability Engine Controls Controls and SettingsIdler Operational Exceptions When the triggering device is pressed the contac Table B.1 Output Range Switch and OUTPUT Control Functions Tor is closed and the welding terminals are HotWire Feeder Mode Controls Auxiliary Power ControlsEngine Operation Starting the EngineBREAK-IN Period Stopping the Engine Typical Fuel ConsumptionTable B.2 Deutz F3L 912 Engine Fuel Consumption Stick Welding Welder OperationTIG Welding Pipe WeldingCommander 400 Settings When Using the K930-1 TIG Module Commander 400 Settings When Using the K799 HI-FREQ UnitTable B.3 Typical Current RANGES1 for Tungsten ELECTRODES2 Auxiliary Power Wire Feed Constant Voltage WeldingSimultaneous Welding and AUXIL- Iary Power Loads Table of Contents Accessories Semiautomatic Welding Accessories OPTIONS/ACCESSORIESHigh Frequency Generators for TIG Applications Electric Shock can kill Connection of Lincoln Electric Wire FeedersING Terminals Remotely Controlled PIN Amphenol Adjust wire feed speed and voltage at the LN-8 Electrode Cable To Work ING Terminals Always on Adjust wire feed speed at the SG Control Module Commander Table of Contents Maintenance Engine Maintenance Routine and Periodic MaintenanceFigure D.1 OIL Drain and Refill Fuel Filters Figure D.2 Fuel PRE-FILTER/WATER Separator AssemblyFigure D.3 Secondary Fuel Filter AIR Filter Maintenance Starting Engine Daily or Before1First 50 Hours EveryEngine Maintenance Parts Manufacturer Part Number Battery Maintenance WELDER/GENERATOR Maintenance Figure D.5 Major Component Locations Table of Contents Theory of Operation Section Theory of Operation Itors Operation SCR Operation CommanderInduction Generators Table of Contents Troubleshooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairPC Board can be damaged by static electricity PC Board Troubleshooting ProceduresObserve Safety Guidelines Troubleshooting GuideControl Board Power Supply Test Detailed in the beginning of this manualOscilloscope Oscilloscope Waveforms Section Resistance Test Engine Problems Tight Check solenoid Waveforms as Illustrated Shutdown Function Problems Local/Remote switch Welding Problems Range Switch Control Board Wave forms SectionTroubleshooting & Repair Definition / Symptom Corrective Action Commander 400 with G2713-1 Control BoardECL SCR/Diode Rectifier Bridge ECP CAL Error Codes During Definition / Symptom Corrective ActionEHC While Running Error Codes Definition / Symptom Corrective ActionLFL COP time-out error Frequency intrusion from another Running Commander 400 with G2713-2 or -3 Control BoardDescription Case Cover Removal and Replacement ProcedureMaterials Needed Procedure Case Cover Removal and Replacement ProcedureTroubleshooting & Repair Figure F.4 Left Side Engine Cover Removal Figure F.5 Front Control Panel Removal Front Shroud Removal ProcedureRemoval Case Front Knobs Removal and Replacement ProcedureTest Description Idler Solenoid TestIdler Solenoid Test Test ProcedureShutdown Solenoid Test Figure F.9 Shutdown Solenoid Lead Terminals Shutdown Solenoid TestEngine Throttle Adjustment Test Strobe Tach Method Engine Throttle Adjustment TestOscilloscope Method Frequency Counter MethodFigure F.11 High Idle Adjustment Locking NUT CommanderStatic SCR/DIODE Rectifier Bridge Test Plug J6 Static SCR/DIODE Rectifier Bridge TestFigure F.15 Resistor R1 Location Figure F.14 Snubber Board Plug J30 LocationTest Active SCR Test Active SCR Test Test ProcedureFigure F.19 Resistor R1 Location Figure F.21 SCR Tester Circuit and SCR Connections Charging Circuit Test #239 #285#281 #238 Charging Circuit TestStator Voltage Test Stator Voltage Test Test Procedure Auxiliary Power Windings TestW2/W5 W1/W4 W3/W6 Plug J2 CommanderTest Procedure Exciter Winding Voltage Test Troubleshooting & Repair Troubleshooting and Repair Range Switch Test Range Switch Test Plug J7 Commander Shunt Calibration Test Shunt Calibration Test Exciter Voltage Feedback Test Exciter Voltage Feedback Test Exciter Capacitor Bank Test Exciter Capacitor Bank Test Control Board Power Supply Test C112 Stator Resistance Test Stator Resistance Test Table F.3 Normal Open Circuit Voltage Waveform 115VAC Supply Scope SettingsHigh Idle no Load Output Current Control AT Maximum MAX TAP MAX Control POT High Idle no Load Normal Open Circuit Voltage Waveform StickMachine Loaded to 400AMPS AT 40 Volts Normal Weld Voltage Waveform Stick CCNormal Weld Voltage Waveform Wire CV MAX Control POT High Idle no Load Normal Open Circuit Voltage Waveform Wire CV TAPNormal Solenoid Pull & Hold Coil Waveforms 200 MV Abnormal Solenoid Pull & Hold Coil WaveformsTypical Exciter Voltage Feedback Waveforms Abnormal Exciter Voltage Feedback Waveforms Control PC Board REMOVAL, Replacement Calibration CV Board Molex Plug Control Board Molex Plugs Control PC Board Removal and ReplacementB1/227 ReassemblyB2/262 B3/232 Stick and Wire Model Only Calibration ProcedureShutdown Solenoid Removal and Replacement Figure F.35 Shutdown Solenoid Lead Connections Shutdown Solenoid Removal and ReplacementFigure F.36 Shutdown Solenoid Linkage ARM Assembly Commander SCR/DIODE Rectifier Bridge Removal and Replacement SCR/DIODE Rectifier Bridge Removal and ReplacementShunt Remove Bolt AT Positive Heat Sink Plate LowerOutput Terminal #207 from StickFigure F.40 Resistor R1 Location Figure F.42 SCR/DIODE Rectifier Bridge Assembly Removal Commander SCR Removal and Replacement Special Instructions SCR Removal and ReplacementProcedure Figure F.45 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 Screws5/8 Inch Wide Spring Procedure for100 101 After Replacing the SCRs102 103 Mounting of Stud Type Diodes to Aluminum Heat SinksHeat Sinks Mounting of Stud Type Diodes to Aluminum104 Diode Stud Foot Inch Size Pounds105 ENGINE, STATOR/ROTOR Removal and ReplacementPreparation and Lead Removal Procedure ENGINE, STATOR/ROTOR Removal and Replacement106 107 Figure F.50 Rear Panel Assembly Removal DetailsFigure F.52 Shutdown Solenoid Lead Removal 108Figure F.54 OIL Pressure Sensor Lead Removal 109Figure F.56 Engine Grounding Lead Lead Attachment Point 110Board ExciterExciter Brass Board CoverFigure F.58 Control Board Plug J2 Location 112Figure F.60 Vertical Baffle /ENGINE Mount Removal 113114 Stator Removal ProcedureReassembly Notes Rotor Removal ProcedureRotor will be free to fall when the bolts are removed 115116 Lead Reconnection ChecklistAuxiliary Power Output Welder CV Wire OutputRetest After Repair Engine Output118 Electrical Diagrams Section Wiring Diagram Stick Model Code Electrical DiagramsSource Wiring Diagram Stick & Wire Model CodePOS CC NEG To Mother Control PCB Schematic Amphenol Bypass PC BoardXxxxx PC Board Assembly Amphenol Bypass PC BoardSchematic Auxiliary Protection PC Board REQ’D Part no Description PC Board Assembly Auxiliary Protection PC BoardSchematic Bypass PC Board ~.04 PC Board Assembly Bypass PC BoardSchematic Control PC Board Part Electrical Diagrams PC Board Assembly Control PC Board +15 Cvscr Schematic CV Control PC BoardXXX PC Board Assembly CV Control PC BoardOIL Temp Switch F.B Schematic Engine Protection PC BoardL9596-1 PC Board Assembly Engine Protection PC BoardCommon Schematic Meter PC BoardREQ’D Part no Identification PC Board Assembly Meter PC BoardAmphenol Schematic Remote Protection PC BoardPC Board Assembly Remote Protection PC Board Schematic Snubber PC Board XXX Xxxxxxx PC Board Assembly Snubber PC BoardSVM Error Reporting Form