Lincoln Electric SVM105-B

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V300-PRO

Section B-1 Section B-1

TABLE OF CONTENTS

- OPERATION SECTION -

Operation................................................................................................................Section B

Operating Instructions........................................................................................... B-2

Controls and Settings.................................................................................... B-2, B-4

Auxillary Power ..................................................................................................... B-4

Contents

Main INVERTEC V300-PRO SVM105-B SERVICE MANUAL April, 2007 Safety Depends on You WARNING ELECTRIC AND MAGNETIC FIELDS may be dangerous ARC RAYS can burn. ii ELECTRIC SHOCK can kill. AUG 06 FUMES AND GASES can be dangerous. FOR ELECTRICALLY powered equipment. Mar 95 CYLINDER may explode if damaged. WELDING SPARKS can cause fire or explosion. PRCAUTIONS DE SRET iv PRCAUTIONS DE SRET POUR LES MACHINES SOUDER TRANSFORMATEUR ET REDRESSEUR Mar. 93 iv MASTER TABLE OF CONTENTS FOR ALL SECTIONS Page A-2 TECHNICAL SPECIFICATIONS - V300-PRO (K1349-3, K1349-4) PHYSICAL DIMENSIONS INPUT RATED OUTPUT OUTPUT DO NOT ATTEMPT TO POWER THIS UNIT FROM THE AUXILIARY POWER SUPPLY OF AN ENGINE WELDER. PRODUCT DESCRIPTION ELECTRIC SHOCK LOCATION ELECTRICAL INSTALLATION POWER INPUT CONNECTION CONNECTION OF WIRE FEEDERS TO THE INVERTEC GENERAL INSTRUCTIONS FOR CONNEC- TION OF WIRE FEEDERS TO INVERTEC K900-1 DC TIG STARTER CONNECTION PARALLEL OPERATION OUTPUT CABLES reverse 25mm & 1in QUICK DISCONNECT PLUGS (K852-7) Page OPERATING INSTRUCTIONS DUTY CYCLE OFF CONTROL FUNCTION / OPERATION REMOTE GMAW FCAW SMAW CRISP SMAW SOFT GTAW METER POLARITY SWITCH AUXILIARY POWER -+ OUTPUT TERMINALS Page ACCESSORIES OPTIONS / ACCESSORIES Page INPUT FILTER CAPACITOR DISCHARGE PROCEDURE OVERLOAD PROTECTION THERMAL PROTECTION PC BOARD REPLACEMENT PREVENTIVE MAINTENANCE Page - THEORY OF OPERATION SECTION - FIGURE E.1 V300-PRO BLOCK LOGIC DIAGRAM INPUT LINE VOLTAGE & AUXILIARY TRANSFORMER PRECHARGE & PROTECTION CIRCUITS SWITCH BOARDS OUTPUT AND CONTROL CIRCUITS B. ACTIVE A. PASSIVE MAXIMUM OUTPUT MINIMUM OUTPUT PULSE WIDTH MODULATION V300-PRO THERMAL PROTECTION PROTECTIVE CIRCUITS OVERLOAD PROTECTION - TROUBLESHOOTING & REPAIR SECTION - HOW TO USE TROUBLESHOOTING GUIDE PC BOARD TROUBLESHOOTING PROCEDURES ADDITIONAL INFORMATION OSCILLOSCOPE WARNING Page Page Page Page Page Page Page INPUT FILTER CAPACITOR DISCHARGE PROCEDURE INPUT FILTER CAPACITOR DISCHARGE PROCEDURE (cont.) OUTPUT PILOT CIRCUIT TEST OUTPUT PILOT CIRCUIT TEST(cont.) OUTPUT PILOT CIRCUIT TEST (cont.) Page PROTECTION BOARD OUTPUT TEST Page PROTECTION L7915 306 313 J8 J15 275F 311 Page CAPACITOR BALANCE TEST STATIC CAPACITOR TEST CAPACITOR BALANCE TEST (cont.) TEST PROCEDURE: DYNAMIC CAPACITOR TEST TEST PROCEDURE: Page Page SWITCH BOARD TEST V300-IPRO SWITCH BOARD TEST (cont.) SWITCH BOARD TEST (CONT.) SWITCH BOARD RESISTANCE CHECKS SWITCH BOARD TEST (CONT.) SWITCH BOARD RESISTANCE CHECKS SNUBBER RESISTOR TEST SNUBBER RESISTOR TEST (cont.) 9RW12WR 401/ 403 1/ 404 5402/ 84/ OUTPUT DIODE TEST OUTPUT DIODE TEST (cont.) -+ Page INPUT RECTIFIER TEST TABLEF.5 OVERCURRENT PROTECTION CURRENT TRIGGER TEST Page OVERCURRENT PROTECTION CURRENT TRIGGER TEST (cont.) CONTROL 1J3 (Black) 2J3 (White) OVERVOLTAGE PROTECTION DC TRIGGER CIRCUIT TEST Page Page 501 313 311 309 310 504 F-42 F-42 FIG. F.19 - OVERVOLTAGE PROTECTION DC TRIGGER CIRCUIT THERMAL PROTECTION AC TRIGGER CIRCUIT Page THERMAL PROTECTION AC TRIGGER CIRCUIT (cont.) Page POWER BOARD TEST Page POWER BOARD J6 501 313 311 J7 J14 211A 275D 305 504 SIMPLIFIED TRIGGER CIRCUIT STT II Only CAPACITOR REMOVALAND REPLACEMENT PROCEDURE PROCEDURE Page Page SWITCH BOARD REMOVALAND REPLACEMENT PROCEDURE PROCEDURE SWITCH BOARD REPLACEMENT (cont.) TEST AFTER SWITCH BOARD OR CAPACITOR REPLACEMENT B300-PRO TEST AFTER SWITCH BOARD OR CAPACITOR REPLACEMENT (cont.) OUTPUT DIODE REPLACEMENT PROCEDURE DESCRIPTION PROCEDURE (Paralleled IndividualDiodes) OUTPUT DIODE REPLACEMENT PROCEDURE (cont.) PROCEDURE (Diode Modules) OUTPUT DIODE REPLACEMENT PROCEDURE (cont.) RETEST AFTER REPAIR - ELECTRICAL DIAGRAMS SECTION - Page ELECTRICAL DIAGRAMS WIRING DIAGRAM - ENTIRE MACHINE CODE 9934 (L8841) PROTECTION (LEFT) - ELECTRICAL DIAGRAMS WIRING DIAGRAM - ENTIRE MACHINE CODE 10034 (L9299) PROTECTION { ELECTRICAL SYMBOLS PER E1537 ELECTRICAL DIAGRAMS WIRING DIAGRAM - ENTIRE MACHINE CODE 10035 (L9301) PROTECTION (LEFT) - Page Page Page Page ELECTRICAL DIAGRAMS SCHEMATIC - ENTIRE MACHINE G-10 Page ELECTRICAL DIAGRAMS PC BOARD ASSEMBLY- DRIVER - (L8660-[]) G-12 Page Page Page ELECTRICAL DIAGRAMS PC BOARD ASSEMBLY- SWITCH - (L8441) G-16 Item Description Page ELECTRICAL DIAGRAMS PC BOARD ASSEMBLY- SWITCH - (L10958-1) L10958-1 SWITCH 8.50 Page Page ELECTRICAL DIAGRAMS G-21 Page ELECTRICAL DIAGRAMS PC BOARD ASSEMBLY- PROTECTION - (L7915-2) G-23 Page ELECTRICAL DIAGRAMS PC BOARD ASSEMBLY- POWER - (L8033-7) G-25