Lincoln Electric SVM146-A Operation, General Description, Recommended Processes and Equipment

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B-3

B-3

OPERATION

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GENERAL DESCRIPTION

The PRO-CUT 80 is an inverter based constant cur- rent, continuous control plasma cutting power source. It provides superior and reliable starting characteris- tics, cutting visibility and arc stability. When cutting expanded metal, the PRO-CUT 80 out-performs the competition due to its quick, clean response to arc transfers. The power supply design provides high transfer-to-cut distances, which makes pierce cutting more reliable with less nozzle wear. The control system has a safety mechanism to insure that the nozzle and electrode are in place before cutting or gouging. This is extremely important due to the high voltages involved.

The PRO-CUT 80 comes standard with an air regula- tor, coarse air filter, and pressure gauge. There are six different torch and cable systems to choose from: hand-held torch with 25’ or 50’ cable, machine and robotic torch both with 25’ and 50’ cable. Consumables are included so that cutting can begin right out of the box. Consumables can also be ordered as individual packages.

The PRO-CUT 80 initiates the plasma arc with a sim- ple, yet reliable, touch-start mechanism. This system eliminates many of the failure problems associated with hi-frequency start systems. The PRO-CUT 80 is capable of cutting with nitrogen or air.

The PRO-CUT 80 is controlled by a microprocessor- based control board. The machine performs rudimen- tary self troubleshooting when powered up, which aids in field servicing.

RECOMMENDED PROCESSES AND EQUIPMENT

The PRO-CUT 80 is capable of all cutting and gouging applications within its output capacity of 35 to 85 amps. These applications include thin gage sheet metal and expanded metal.

OPERATIONAL FEATURES AND CONTROLS

The PRO-CUT 80 comes with an ON/OFF POWER SWITCH, OUTPUT CURRENT CONTROL, PURGE BUTTON, STATUS INDICATORS and a SAFETY RESET BUTTON. See Figure B.2 and related discus- sion.

DESIGN FEATURES AND

ADVANTAGES

The microprocessor controlled PRO-CUT 80 design makes plasma cutting and gouging tasks uncompli- cated. This list of design features and advantages will help you understand the machine's total capabilities so that you can get maximum use from your machine.

•Light weight and portable design for industrial use.

•Continuous control, 35 - 85 amps.

•Reliable touch start mechanism for plasma arc initi- ation.

•Unique microprocessor controlled starting sequence for safe and consistent starting.

•Rapid arc transfer for fast cutting of expanded metal.

•High transfer distance for ease of use.

•Input overvoltage protection.

•3.0 second pilot arc.

•Purge momentary push button.

•Air regulator and pressure gauge located on the front of machine for convenience.

•”Parts-in-Place” mechanism to detect proper instal- lation of consumables and torch.

•Automatic detection of faulty output control.

•In-line coarse air filter.

•Preflow/Postflow timing. Preflow is eliminated if arc is re-initiated in Postflow.

•Thermostatic Protection.

•Solid state overcurrent protection.

•Works with pure nitrogen for cutting nonferrous materials.

•Reconnectable for multiple input voltages.

•Quick disconnect torch.

•Display indicators for machine status.

•Unique electrode and Vortech™ nozzle design for optimum cooling and long life.

•Swirl texture inside Vortech™ nozzle for better start- ing reliability and higher quality cuts.

•Unique drag cup design for durability and elimina- tion of double arcing.

PRO-CUT 80

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Contents PRO-CUT California Proposition 65 Warnings SafetyElectric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Master Table of Contents for ALL Sections Table of Contents Installation Section Technical Specifications PRO-CUT InstallationGAS Requirements Technical Specifications Cont’d PRO-CUTSelect Suitable Location Safety PrecautionsLifting and Moving StackingInput Wire and Fuse Size Input Power Cord Connector InstallationInput Connections Ground ConnectionReconnect Procedure Reconnect ProcedureReturn Return to Section TOC GAS Input ConnectionsTorch Connection Output ConnectionsTable of Contents Operation Section Operating Instructions Safety InstructionsOPERATIONB-2 Design Features Advantages Operational Features and ControlsOperation General DescriptionLimitations Cutting CapabilityConsumable Life Pilot ARC Considerations Controls and SettingsCutting Operation Safety Status Indicator Procedure Recommendations Preheat Temperature forPlasma Cutting User ResponsibilitySuggestions for Extra Utility from the PRO-CUT System Thick Sections of MetalARC Voltage ARC StartARC Initiated PRO-CUT Accessories Table of ContentsGeneral Options Accessories Table of Contents Maintenance Electric Shock can kill Input Filter Capacitor Discharge ProcedurePeriodic Maintenance Routine MaintenanceMaintenance Table of Contents Theory of Operation Section Theory of Operation Input Line VOLTAGE, Switch and Main TransformerPrecharge and Protection Power BoardFigure E.4 Main Transformer Main TransformerFigure E.5 Plasma Output Board and Torch Output Board and TorchFigure E.6 Control and Display Boards Control and Display BoardsThermal Protection Protection CircuitsOverload Protection Insulated Gate Bipolar Transistor Igbt Operation Maximum Output Pulse Width ModulationMinimum Output PRO-CUT Table of Contents Troubleshooting & Repair Section HOW to USE Troubleshooting Guide Troubleshooting & RepairPC Board can be damaged by static electricity PC Board Troubleshooting ProceduresOutput Problems Troubleshooting GuideFunction Problems Air begins to flow when Make sure the air pressure is Cutting Problems LED Function Problems Troubleshooting Guide Materials Needed DescriptionFigure F.1 Location of Input Filter Capacitor Terminals Input Filter Capacitor Discharge ProcedureInput Rectifier Test Input Rectifier Test Test ProcedureTest Point Terminals Analog Meter X10 Range Primary Power Board Resistance Test Capacitor Voltage Test Capacitor Voltage Test Primary Power Board Resistance TestBoard Removal and Replacement Procedure Test Procedure Table F.3 Capacitor Voltages Output Power Board Resistance Test Figure F.4 Output Power Board Lead Locations Output Power Board Resistance TestOutput Power Board Removal and Replacement Procedure Torch Continuity and Solenoid Test Torch Continuity and Solenoid Test Test ProcedureAIR/GAS Solenoid Test Figure F.6 AIR Solenoid AIR/GAS Solenoid TestT2 Auxiliary Transformer Test T2 Auxiliary Transformer Test ProcedureYellow 1J21 Yellow 7J21 115VAC Test Point Expected VoltageTrigger Circuit Test Simplified Trigger Circuit Trigger Circuit TestPerform the Input Filter Capacitor Discharge Procedure PRO-CUT 80 Output Board LED Definitions Figure F.11 Control Board LEDs Control Board LED DefinitionsLOW Voltage Circuit Test T2 Auxiliary Transformer LOW Voltage Circuit TestFigure F.12, Low Voltage Circuit Diagram Test Point Figure F.15 Display Board Test Points Control Board Removal and Replacement Screws Control Board Removal and ReplacementFigure F.18 Control Board Removal from Mounting Pins Display Board Removal and Replacement Figure F.19 Case Front Screw Removal Display Board Removal & ReplacementFigure F.20 Display Board Removal Output Power Board Removal and Replacement Output Power Board Output Power Board Removal & ReplacementFigure F.22 Output Board Lead Locations Replacement Procedure This procedure takes approximately 40 minutes to perform Removal Procedure Primary Power Board and Filter CapacitorRemoval and Replacement Heatsink Mounting Screws Socket Head Capacitor Removal Capacitor Replacement and P.C. Board ReplacementInput Rectifier Bridge Removal and Replacement Figure F.25 Input Rectifier Lead Locations PRO-CUT Input Rectifier Bridge Removal and ReplacementTroubleshooting & Repair Input Idle Amps and Watts Retest After RepairPRO-CUT Electrical Diagrams Wiring Diagram PRO CUT 2ELECTRICAL Diagrams G-2Cutting Current Setpoint Local Schematic Control PC BoardPRO-CUT 80 Control PC Board Assembly Control Board Code 10574 onlyG3560-1 PC Board Assembly Control Board Code 10577 & 10578 onlySchematic Power PC Board 6ELECTRICAL DIAGRAMSG-6Power PC Board Assembly Power BoardElectrical Reqd Identification PC Board Assembly Output BoardFilename Schematic Display PC BoardLight BAR,LED,GREEN PC Board Assembly Display BoardSVM Error Reporting Form

SVM146-A specifications

Lincoln Electric's SVM146-A is a versatile and powerful multi-process welding machine designed for professionals in various industries. Known for its robustness and reliability, this machine excels in both performance and user-friendly features, making it a popular choice among welders.

One of the standout features of the SVM146-A is its multi-process capability, allowing users to perform MIG, TIG, and stick welding using a single unit. This versatility is enhanced by Lincoln Electric's innovative Auto-Set technology, which automatically adjusts the machine's settings based on the selected process and materials being welded. This feature significantly reduces the time spent on setup and helps ensure optimal weld quality, even for less experienced operators.

The SVM146-A is powered by a reliable inverter design, which provides greater efficiency compared to traditional transformer-based machines. This compact and lightweight design allows for easy transport, making it ideal for job sites or remote locations. The inverter technology also contributes to enhanced arc stability and better overall performance, providing high-quality welds in less time.

Another key characteristic of this welding machine is its robust construction, designed to withstand the rigors of heavy industrial use. The SVM146-A features a durable chassis and control panel, ensuring longevity and reliability under challenging working conditions. Additionally, its intuitive interface allows users to easily navigate settings and make adjustments as needed.

Safety is a paramount concern in welding applications, and the SVM146-A is equipped with several safety features, including over-temperature and over-voltage protection, ensuring that the machine operates safely even in demanding environments. It also features a start inhibit system, preventing the machine from being started under unsafe conditions.

The SVM146-A is compatible with a variety of welding accessories and consumables, enhancing its flexibility and usability across different applications. Whether it’s automotive repair, heavy fabrication, or maintenance work, this welding machine adapts to various tasks, making it a valuable addition to any professional's toolkit.

In conclusion, Lincoln Electric's SVM146-A stands out as a multi-process welding machine that combines advanced technology, robust design, and user-friendly features. It is engineered for performance and reliability, making it an excellent investment for professionals dedicated to achieving high-quality welds.
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