Lincoln Electric SVM185-A service manual Tach Feedback Test

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F-15

TROUBLESHOOTING AND REPAIR

F-15

TACH FEEDBACK TEST

WARNING

Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty. For your safety and to avoid electrical shock, please observe all safety notes and precautions detailed throughout this manual.

If for any reason you do not understand the test procedures or are unable to perform the test/repairs safely, contact the Lincoln Electric Service Department for electrical trou- bleshooting assistance before you proceed. Call 1-888-935-3877.

TEST DESCRIPTION

This test will determine if the tach unit is receiving the correct supply voltage from the control board, and also if the tach unit is sending feedback information to the control board.

MATERIALS NEEDED

3/8" in. nut driver Volt-Ohm Meter

POWER FEED® 25M

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Contents Power Feed 25M Power Feed 25M SafetyFumes and Gases Electric Shock can killIii For ElectricallySûreté Pour Soudage a L’Arc Précautions DE SûretéElectromagnetic Compatibility EMC Safety Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications Power Feed 25M K2536-1 InstallationElectric Shock can Kill Safety Precautions High Frequency ProtectionLocation Wiring Power Source Wire FeederDigital Control CABLE, K1543-XX FunctionTable A.1 Weld Cable SizeCoaxial Weld Cable Gmaw Electrode Polarity Shielding GAS ConnectionGtaw Build UP of Shielding GAS MAYOFF Changing the Drive Motor Gear RatioProcedure to Install Drive Rolls and Wire Guides Wire Drive ConfigurationLoading Spools of Wire Remote Sense Lead SpecificationsTypical System Configurations Table of Contents Operation Section Operation Safety PrecautionsDuty Cycle General DescriptionDefinition of Welding Terms Equipment Limitations Recommended Power SourcesRecommended Processes 11. ON/OFF switch Connector for a remote controlPin connector Left Display windowStatus LED ON-OFF SwitchTable B.1 Definition7OPERATIONB-7 Technology Power SourcesMaking a Weld with Waveform Smaw Stick Welding8OPERATIONB-8 Process ModeSmaw Stick Welding Display MSP4 OperationThree non-synergic welding modes are available NON-SYNERGIC Gmaw and FcawWelding Non-Synergic Gmaw and Fcaw Welding Display Modes 5 MSP4 OperationFigure B.5 Gmaw MIG Synergic Welding220 26.4 ARC Control Steel and Stainless Synergic GMAW-P Pulsed MIG WeldingStainless Steel Gmaw Migwelding 220 Aluminum Synergic GMAW-P Pulsed 16OPERATIONB-16Migand GMAW-PP Pulse on Pulse Pulse-on-Pulse WeldingAluminum Pulse Welding Aluminum GMAW-P and GMAW-PPFigure B.14 Aluminum GMAW-P and GMAW-PP WeldingAluminum Pulse and Pulse-On-Pulse Synergic Weld Display Figure B.15 GMAW-STT WeldingGMAW-STT 109Figure B.16 TailoutTIG Gtaw TIG WeldingTouch Start OFF Power Feed SET-UP Features Menu10M All Models Feed 10AQuick Preflow time will not be accessible from the MSP4 Operation PROCEDURE/MEMORY Panel Opera User Memories Tion Parameter Range Units LimitsMSP4 Display Limits may be set forParameter Name High LimitLow Limit Item D Escription Internal ControlsLight Switch Cold FEED/GAS Purge SwitchHeater Switch Step Trigger OperationPreflow 34OPERATIONStrike WeldFigure B.20 Figure B.21 UpslopePostflow 37OPERATIONB-37Figure B.23 StartRear Controls DescriptionFlow Meter Operation on Lincnet Power SourcesScfh Liter/MinTable of Contents Accessories Section Factory Installed Equipment AccessoriesWire Type Electrode Size KP KIT Drive Roll Kits UsedK2593-xx #1 Co-Axial Power Cable Accessories K1500-5 Gun Receiver Bushing compatible Cooling KIT InstallationUse a 5/16 nut driver to remove the screws holding Water cooling cover on the case front of the innerFigure C.1 Python Water Cooled GunsPower Feed 25M Table of Contents Maintenance Section Routine Maintenance MaintenancePeriodic Maintenance Calibration Specification1TABLE of CONTENTS-THEORY of Operation Section E-1 Figure E.2 General Physical Description Theory of OperationFigure E.3 GAS Solenoid Controls Power Feed 25MControl BOX User Interface Component is causing the problem. By using the status TroubleshootingComponent Status Lights Status Light StatesStatus Light States CON’T 1TABLE of Contents Troubleshooting and Repair F-1 HOW to USE Troubleshooting Guide 2TROUBLESHOOTING and REPAIRF-2PC Board Troubleshooting Procedures Troubleshooting and RepairSee Setting DIP Switches Wire Drive Troubleshooting and Repair Output Problems Power Power source is functioning Make certain the Power WaveSetting Dip Switches in the Wire Troubleshooting and Repair Fault Code Description Possible Adjustments ArcLink System Error CodesPower Feed 25M Materials Needed Voltage Sense PC Board TestTest Description Figure F.1 Plug J1 and J2 Locations ProcedureTach Feedback Test Blue RED Drive Motor Test #550 #551 Gear BOX and Drive Motor Removal and Replacement Procedure Gear BOX Removal and Drive Motor Figure F.4 Gear BOX and Drive Motor Removal and ReplacementTo Remove the Drive Motor from the Gear BOX To Remove the Wire Drive Assembly from the Gear BOXReplacement Procedures Retest After Repair SET UPTable of Contents Diagram Section Wiring Diagram Complete Machine Code 11313 G5585 Electrical DiagramsG5638 Schematic Complete Machine Code 11313 G5638Schematic 42 VAC & Arclink Feeder PC Board #1 G3883-2 Schematic 42 VAC & Arclink Feeder PC Board #2 G3883-2 Schematic MSP4 Optional Display PC Board G4456 Schematic SPI Display PC Board L11756 PC Board Assembly SPI Display L11757-1 Schematic Voltage Sense Select PC Board S24779 PC Board Assembly Voltage Sense Select M19540 Schematic Spool GUN PC Board L12008 PC Board Assembly Spool GUN M20159