Lincoln Electric SVM154-A service manual Wire Reel Changing, Wire Feed Overload Protection, DH-10

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B-13

OPERATION

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WIRE REEL CHANGING

At the end of a coil, remove the last of the old elec- trode coil from the conductor cable by either pulling it out at the nozzle end of the gun or by using the follow- ing procedure:

1)Cut the end of the electrode off at the gun end. Do not break it off by hand because this puts a slight bend in the wire making it difficult to pull it back through the nozzle.

2)Disconnect the gun cable from the gun connector on the LN-10 wire drive unit and lay the gun and cable out straight.

3)Using pliers to grip the wire, pull it out of the cable from the connector end.

4)After the electrode has been removed, reconnect the gun cable to the drive. Load a new reel of elec- trode per the instructions in “Wire Reel Loading” in this section.

LOSS OF VOLTAGE SENSE SHUTDOWN

If the actual displayed voltage, when the trigger is closed, drops below 8.0 volts for over 0.8 second it is assumed the voltage feed back sensing circuit to the LN-10 is opened or faulty, so Loss of Voltage Sense Shutdown occurs until the trigger is released.

This shutdown stops the motor, shuts off the gas flow and disables the power source output to prevent the LN-10 voltage control from driving the power source output too high due to loss of proper feedback sensing via #21 (WORK) and #67 (ELECTRODE) sensing leads.

WIRE FEED OVERLOAD PROTECTION

The LN-10 has solid-state overload protection of the wire drive motor. If the wire drive motor becomes overloaded for an extended period of time, the protec- tion circuitry turns off the power source, wire feed and gas solenoid, and then displays “H30” on the WFS display (with blank Voltage display). This indicates the wire drive motor is overloaded and will remain shut down for about 30 seconds before the unit will automatically reset. The “H30” display decrements every second until it reaches “H00”. At that time, the unit resets automatically and the previous displays will return indicating the unit is ready to operate again. Overloads can result from improper tip size, liner, drive rolls, or guide tubes, obstructions or bends in the gun cable, feeding wire that is larger than the rated capacity of the feeder or any other factors that would impede normal wire feeding. (See “Avoiding Wire Feeding Problems” in the MAINTENANCE section).

GROUNDING LEAD PROTECTOR

The frame of the LN-10 Control is grounded to the frame of the power source by a lead in the control cable. An overload protector prevents welding current from damaging this lead if the electrode circuit touch- es the wire feeder frame while the electrode is electri- cally hot.

If such a grounding lead fault occurs, the WFS display will show “GLP,” (with blank Voltage display) and the trigger circuit will be disabled. To reset the circuit, release the trigger, make sure that the electrode is not touching the wire feeder frame, and then either press any key on the keypad or close the trigger. When the GLP circuit is reset, the “GLP” display is removed and the wire feeder is returned to normal operating mode.

DH-10

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Contents SVM154-A ISAFETYi Fumes and Gases SafetyIii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Table of Contents Installation Section InstallationGeneral Description Technical Specifications LN-10 Head & ControlInstallation of the LN-10 Boom Mount Wire Feeder Components Safety PrecautionsMounting the 10 Series Wire Drive Recommended Processes and EquipmentMounting the LN-10 Control Box Mounting Synergic 7F Wire Drive Unit K679-1 orConnecting Wire Drive Unit to Control Box Control Speed Range Setting Wire Drive Speed Range SelectionSeries Wire Drive Ratio Selection Electrode RoutingProcedure to Install Drive Roll and Wire Guides Wire Feed Drive Roll KitsSeries Wire Drive Roll Kit Installation KP1505 and KP1507 Synergic 7F Wire Drive 4-Roll Kits KP655 and KP656GUN and Cable Assemblies with FAST-MATE Connection GUN and Cable Assemblies with Standard ConnectionGmaw Guns Innershield GunsSeries Wire Drive Water Connections for Water Cooled Guns 8INSTALLATIONA-8Cylinder may explode if damaged Buildup of Shielding GAS may harm health or killInput Cable LN-10 Control to Power Source Electrical InstallationBoom and Bench Conversions Optional Features InstallationMaterials Required for bench to boom conversion Materials Required for boom to bench conversionOperation Table of Contents Operation SectionSetting the DIP Switches LN-10 Control DIP Switch SetupWire Drive Head Selection Setup DIP Switch AccessWelding Power Source Selection Security Mode Selection Step Trigger Mode Operation SelectionMetric/English Wire Feed Speed Display Selection S2 switch 1 on = m/minS2 switch 4 on = Robotics mode on Maximum Limits Setting Mode SelectionS2 switch 6 on Minimum Limits Setting mode on S2 switch 4 OFF = Robotics mode OFF As shippedProcedure Lights Indicate which Power-Down SaveKeypad and Display Operation Keypad and Display DescriptionTrigger Mode Selection Display Control Keys Digital Memory Voltmeter Control Control Select key enables operator toMaximum and Minimum Limits Setting Modes Wire Reel Loading READI-REELS Spools or Coils Dual Procedure RemoteFigure B.2 Making a Weld Procedure for Setting Angle of FeedplateGAS Guard Regulator Setting Wire Feed Overload Protection Wire Reel ChangingGrounding Lead Protector DH-10Display Prompt or Error Explanation of Prompting Error MessagesTable of Contents Accessories Section AccessoriesGeneral Table C.1 LN-10 Wire Feeder AccessoriesCored Electrode Wire Size Solid Steel ElectrodeAluminum Electrode Aluminum Electrode For use with Binzel Guns OnlyK683-3 Dual Procedure Switch K683-1 Dual Procedure SwitchK1449-1 Dual Procedure Input Cable AssembliesGUN Adapters for 10 Series K1558-1 Remote Switch Interface ModuleGUN and Cable Assemblies K1561-1 Robotics Interface ModuleK1555-1 Insulated Lift Hook K1557-1 Swivel MountK1556-1 Light Duty Caster KIT Table of Contents Maintenance Section MaintenanceAvoiding Wire Feeding Problems Safety Precautions MaintenanceRoutine Maintenance Periodic MaintenanceFigure D.1 Major Component Locations Theory of Operation Table of Contents Theory of Operation SectionControl Board Input RECEPTACLE, Control Board and Operator Controls Figure E.3 LN-10 Wire Feed Head and Receptacle Wire Feed Head ReceptacleTheory of Operation Protection and Shutdown Wire Feed Overload Loss of Voltage Sense Protection ShutdownLN-10 Table of Contents Troubleshooting and Repair Section Troubleshooting and RepairReturn to Return to Master TOC HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures LN-10 Function Problems Troubleshooting GuideFunction Problems Power Source Selection Function Problems Mode Selection Perform the Encoder Board Test Troubleshooting and Repair Mum and minimum limit set Perform the Gas Solenoid Test Feeding Problems Welding Problems LN-10 Wire Drive Motor Test Test ProceduresTest Description Materials NeededTest Procedure Wire Drive Motor TestMaterials Needed Tach Adjustment and Feedback TestTach Adjustment and Feedback Test 20TROUBLESHOOTING and REPAIRF-20Tach Adjustment Procedure LN-10 Keypad Resistance Test Keypad Resistance Test 24TROUBLESHOOTING and REPAIRF-24Control Ohms 50 Ohms Typical LN-10 Encoder PC Board Test Figure F.4 Encoder PC Board Test Encoder PC Board TestGAS Solenoid Test GAS Solenoid Test 30TROUBLESHOOTING and REPAIRF-30Display PC Board Removal and Replacement Component Replacement ProceduresDisplay PC Board Removal and Replacement 32TROUBLESHOOTING and REPAIRF-32Removal Procedure Replacement ProcedureGAS Solenoid Removal and Replacement GAS Solenoid Removal and Replacement 34TROUBLESHOOTING and REPAIRF-34Encoder PC Board Removal and Replacement Figure F.8 Encoder PC Board Removal and Replacement Encoder PC Board Removal and ReplacementWire Drive Motor and Gear BOX Removal and Replacement Figure F.9 Wire Feed Assembly Removal Wire Drive Motor and Gear BOX Removal and ReplacementTo Remove the Drive Motor from the Gear BOX To Remove the Wire Drive Assembly from the Gear BOXReplacement Procedures Current Sensing Reed Switch Removal and Replacement Current Sensing Reed Switch Plug Retest After Repair Check Wire Feed Speed RangeElectrical Diagrams Section Wiring Diagram LN-10 Control Electrical DiagramsElectrode Cable From Current Sensor Wiring Diagram LN-10 Wire DriveSchematic Control PC Board #1 Circuitry Tach Schematic Control PC Board #23168 G PC Board ASSEMBLY-CONTROL5VA Schematic Display PC BoardBoard 22066 Schematic Encoder PC BoardEncoder PC Board ASSEMBLY-ENCODERSVM Error Reporting Form

SVM154-A specifications

The Lincoln Electric SVM154-A is a powerful and versatile inverter-based welding machine designed for a wide range of applications. As a part of Lincoln Electric's esteemed portfolio, this model is particularly favored for its robust performance and cutting-edge technologies, making it ideal for both professional fabricators and hobbyists alike.

One of the standout features of the SVM154-A is its compact and lightweight design, which enhances portability without compromising power. Weighing significantly less than traditional welding machines, it allows welders to easily transport the equipment to various job sites. This feature is particularly beneficial in industries where mobility is essential.

Equipped with advanced inverter technology, the SVM154-A delivers a stable and smooth arc, providing consistent welding performance even in challenging conditions. The inverter design also contributes to energy efficiency, allowing users to save on operational costs while enjoying superior performance. The machine supports both MIG and TIG welding processes, which adds to its versatility. This adaptability makes it suitable for a range of materials including mild steel, stainless steel, and aluminum.

Another notable characteristic is its user-friendly interface. Designed with the welder in mind, the SVM154-A includes intuitive controls that simplify settings adjustments and operational processes. This ergonomic layout allows for ease of use, even for beginners, while still offering the adjustments that experienced welders appreciate for customizing their welds.

The SVM154-A also includes several safety features, such as thermal overload protection and a dynamic power control, ensuring safe operation while maintaining high productivity. Users benefit from features that protect both the machine and the operator, making it a reliable choice for long hours of work.

Moreover, Lincoln Electric's commitment to durability is evident in the SVM154-A's construction. Built with high-quality materials, this welding machine is designed to withstand the rigors of daily use, ensuring longevity and reliability over time.

In summary, the Lincoln Electric SVM154-A stands out for its portability, versatility, and user-centric design. With advanced inverter technology that promotes energy efficiency and a stability for various welding processes, it serves as a valuable tool for both professionals and hobbyists seeking to achieve high-quality welds across different applications. Its combination of advanced features, safety mechanisms, and rugged durability positions the SVM154-A as a top choice in the welding equipment market.
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