Table of Contents Diagram Section | Lincoln Electric V155-S specification

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TABLE OF CONTENTS - DIAGRAM SECTION

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Electrical Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-1

Wiring Diagram (W07X071) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-2 Schematic - Complete Machine (X0931) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-3 Schematic - Input Board (X0791) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-4 PC Board Assembly - Input Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-5 Schematic - Inverter Board (X0519 - Sheet 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-6 Schematic - Inverter Board (X0519 - Sheet 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-7 PC Board Assembly - Inverter Board - Sheet 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-8 PC Board Assembly - Inverter Board - Sheet 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-9 Schematic - Control Board (W05X0708) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-10 PC Board Assembly - Control Board - Sheet 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-11 PC Board Assembly - Control Board - Sheet 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .G-12

* NOTE: Many PC Board Assemblies are now totally encapsulated, surface mounted and or multi-layered and are therefore considered to be unserviceable. Assembly drawings of these boards are no longer provided.

INVERTEC® V155-S

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Lincoln Electric V155-S service manual Table of Contents Diagram Section

Contents

Invertec V155-S For Engine SafetyElectric Magnetic Fields Fumes and Gases Electric Shock can kill ARC Rays can burn Iii For Electrically Transformateur ET À Précautions DE SûretéPrécautions DE Sûreté Pour LES Machines À Souder À Electromagnetic Compatibility EMC L10093 3-1-96H Master Table of Contents for ALL Sections Table of Contents Installation Section Operating Temperature Range Storage Temperature Range Installation Tilting Safety PrecautionsInput Connections Select Suitable Location Engine Driven Generator Input Power Connection230V Input 120V Input TIG Welding Output ConnectionsStick Welding Smaw Replacement Quick Disconnect Plug for Stick Electrode Cable Table of Contents Operation Section Welding Capability Safety InstructionsTheory of Operation General Description OFF FeaturesControls and Operational Function With Stick Welding Auto Adaptive ARC ForceRear Control Panel Table of Contents Accessories Section Cable Plugs Compatible Equipment Accessories Table of Contents Maintenance Section Thermal Protection MaintenanceInput Filter Capacitor Discharge Procedure Routine Maintenance Figure D.1 Major Component Locations Major Component Locations Invertec V155-S 1TABLE of CONTENTS-THEORY of Operation Section E-1 Figure E.2 General Description Figure E.3 Input Board Input Board Figure E.4 Main Inverter Board Main Inverter Board Figure E.5 Control Board Control Board Figure E.6 Igbt Operation Insulated Gate Bipolar Transistor Igbt Operation Maximum Output Pulse Width ModulationMinimum Output Sec 31 m/sec 33 m/sec Invertec V155-S 1TABLE of Contents Troubleshooting & Repair F-1 HOW to USE Troubleshooting Guide Troubleshooting & Repair Electric Shock PC Board Troubleshooting Procedures Resistance Test Perform Inverter Board Voltage Test Machine has high welding Materials Needed 7TROUBLESHOOTING & REPAIRF-7Case Cover Removal Procedure Test Description Disconnect power to the Invertec V155-S Procedure 9TROUBLESHOOTING & REPAIRF-9 Input Filter Capacitor Discharge Procedure Figure F.4 Capacitor Discharge Locations 11TROUBLESHOOTING & REPAIRF-11 Invertec V155-S Input Board Resistance Test 13TROUBLESHOOTING & REPAIRF-13 DC+ Inverter Board Resistance Test 15TROUBLESHOOTING & REPAIRF-15 Figure F.6 Inverter Board Test Points Inverter Board Resistance Test Invertec V155-S Input Board Voltage Test 19TROUBLESHOOTING & REPAIRF-19 PWR 2white to PWR 1blue to PWR 4white to PWR 3blue to 20TROUBLESHOOTING & REPAIRF-20 Figure F.9 Main Switch Plug Location 21TROUBLESHOOTING & REPAIRF-21 Invertec V155-S Inverter Board Voltage Test 23TROUBLESHOOTING & REPAIRF-23 Figure F.10 Plug JP1 Testpoints Input Board Removal and Replacement Procedure 25TROUBLESHOOTING & REPAIRF-25 AC2 Inverter Board Removal and Replacement Procedure 27TROUBLESHOOTING & REPAIRF-27 Perform the Case Cover Removal Procedure Figure F.13 Inverter Board Removal 29TROUBLESHOOTING & REPAIRF-29 Invertec V155-S Control Board Removal and Replacement Procedure 31TROUBLESHOOTING & REPAIRF-31 Figure F.14 Control Board Removal 32TROUBLESHOOTING & REPAIRF-32 Recommended Meters for Machine Output Tests INPUT- Single Phase onlyRated Output Output Invertec V155-S Table of Contents Diagram Section Electrical Diagrams Schematic Complete Machine Codes 11326 Electrical Diagrams Aux Potenza Schematic Input PC Board PC Board Assembly Input Board PTC Schematic Inverter PC Board Sheet #1 FEED-FORWARD Schematic Inverter PC Board Sheet #2 PC Board ASSEMBLY- Inverter Board Sheet # PC Board Assembly Inverter Board Sheet #2 U1A Schematic Control PC Board See Page 2 for more detailed component information PC Board Assembly Control Board page Sheet #1 PC Board Assembly Control Board Sheet #2