Lincoln Electric Invertec STT II User's Manual
Contents
1. 415 3 50 60 200 220 380 415 440 3 50 60 200 208 380 400 415 3 50 60 Current Voltage Duty Cycle 225A 29V 60 200A 28V 100 Max OCV 85V Dimensions HxWxD inches mm 23 2 X 13 2 x 24 4 589 x 336 x 620 Input Current Rated Output 32 30 16A Output Range Weight Ibs kg 117 53 Peak Current 0 450A Background Current 0 125A 33 30 18 17 16A 36 34 20 19 18A 33 30 18 17 16A 36 34 20 19 18A Publication E4 52 3 05 www lincolnelectric com A CLOSER LOOK LINCOLN ETa ira WHAT IS NEXTWELD Nextweld integrates Lincoln s technologies process provide the foundation for Nextweld innovations like Pulse On es and products to create a comprehensive flexible Pulse Power Mode STT and ArcLink Look for Nextweld user friendly welding system that can increase for ultimate arc control high efficiency reliability and seamless efficiency and reduce fabrication costs Waveform system integration Control Technology and digital communications NEXTWELD Waveform Control Technology Driving Superior Welding Performance Lincoln s Waveform Control Technology controls and shapes the output waveforms or weld modes to adapt to virtually any application material or weld position Waveform Control Technology makes it possible to take advantage of Lincoln Nextweld innovations like the STT Process using the STT Il For more information see Nextweld Doc2. of cable Order K942 1 Inverter and Wire Feeder Cart Rear wheeled cart includes front casters and no lift gas bottle platform Convenient handles allow for easy cable storage while full length side trays store parts and tools Shipped fully assembled Small footprint fits through 30 inch door Order K1764 1 Dual Cylinder Kit Permits side by side mounting of two full size gas cylinders with easy loading For use with K1764 1 cart Order K1702 1 STT Il Sense Lead Kit Required to accurately monitor voltage at the arc for heavy duty applications 25 ft length included with Invertec STT Il 75 ft 23m length Order WK1811 75 Coaxial Cable Recommended for STT and pulse welding when using long distances between feeder and power source Order K1796 25 25 ft 7 6m 350 amps Order K1796 50 50 ft 15 2m 350 amps Order K1796 75 75 ft 22 8m 325 amps Order K1796 100 100 ft 0 4m 300 amps GENERAL OPTIONS CONT Twist Mate Cable Plug For connecting welding cable to output terminal receptacles For 1 0 2 0 50 70mm cable Order K852 70 Twist Mate Cable Plug For connecting welding cable to output terminal receptacles For 2 0 3 0 70 95mm cable Order K852 95 Twist Mate Cable Receptacle For connecting welding cable to Twist Mate cable plug For 1 0 2 0 50 70mm cable Order K1759 70 Twist Mate Cable Receptacle For connecting welding cable to Twist Mate cable plu
3. 60 m Magnum 200 Gun and Cable a Assembly With 15 ft 4 5mm cable For 035 045 0 9 1 1mm wire Order K497 21 for STT 10 and LN 15 K497 1 for LN 742 Magnum Connector Kit Used for connecting Magnum gun and cable to assembly Order K466 1 for LN 742 K466 10 for STT 10 and LN 15 LINCOLN E WA invert ST TO I THE WELDING EXPERTS su 7 www lincolnelectric com PRODUCT DESCRIPTION INVERTEC STT II ORDER FORM ORDER NUMBER STT II 208 230 460 3 60 K1525 1 STT IlI International 200 220 380 415 440 415 3 50 60 K1526 1 STT Il International 200 208 380 400 415 3 50 60 K1526 2 STT II CE Approved 200 220 380 415 440 3 50 60 K1527 1 STT II CE Approved 200 208 380 400 415 3 50 60 K1527 2 RECOMMENDED GENERAL OPTIONS pe Power Source Remote Output Control K942 1 QUANTITY Inverter and Wire Feeder Cart K1764 1 Dual Cylinder Kit K1702 1 STT Il Sense Lead Kit 75 ft 23m included with power source WK1811 75 Coaxial Cable K1796 xx Twist Mate Cable Plug 1 0 2 0 50 70mm cable K852 70 Twist Mate Cable Plug 2 0 3 0 70 95mm cable K852 95 Twist Mate Cable Receptacle 1 0 2 0 50 70mm cable K1759 70 Twist Mate Cable Receptacle 2 0 3 0 70 95mm cable K1759 95 Twist Mate to Lug Adapter K2176 1 RECOMMENDED WIRE FEEDER OPTIONS STT 10 Wire Feeder See Publication E8 190 LN 742 Wire Feede
4. LINCOLN ELECTR Invertec STT Il Featuring the Surface Tension Transfer STT Process Control Heat Input Spatter and Fume The revolutionary STT Il power source combines high frequency inverter technology with advanced Waveform Control Technology to provide a better welding solution than traditional short arc MIG Unlike CV MIG machines the STT machine has no voltage control knob STT uses current controls to adjust the heat independent of the wire feed speed so changes in electrode extension do not affect heat Low heat input welds ca without overheating or burning through and distortion is minimized Spatter and fumes are reduced because the electrode is not overheated even when welding with larger diameter wires and 100 CO shielding gas Processes GMAW STT Advantage Lincoln e Controlled penetration and outstanding heat input control Ideal for welding joints with open root gaps or on thin material with no burnthrough e Reduced spatter and fumes Current is controlled to achieve optimal metal transfer e Reduced welding costs Ability to use 100 CO shielding gas with larger diameter wires e Various shielding gases STT may be used with various gas blends of Argon including Helium e Good bead control and faster travel speeds Can replace TIG GTAW in many applications without sacrificing appearance e Background and Tailout Current accurately control fine and coarse hea
5. OSER LOOK USING STT FOR OPEN ROOT WELDING Open root welding is used for pipe and single sided plate welding in situations that preclude welding from both sides of the material This type of welding is common in the petrochemical and process piping industries ZIA SSS Advantages of STT Open Root Penetration Control e Provides reliable root pass and complete back bead Ensures excellent sidewall fusion Cost Reduction e Uses 100 CO the lowest cost gas when welding carbon steel Flexibility e Provides the capability of welding stainless steel nickel alloys and mild or high strength steels without compromising weld quality e Capable of welding out of position Low Heat Input e Reduces burnthrough and distortion Low Hydrogen Weld Metal Deposit Speed e High quality open root welds at faster travel speeds than GTAW Current Control Independent of Wire Feed Speed e Allows operator to control the heat input to the weld puddle Ease of Operator Use e More forgiving process than conventional short arc welding with CV machines STT Open Root Application Stick welding with cellulose electrodes provides good fusion characteristics but leaves deep wagon tracks requiring more labor for grinding a very convex root weld and a high hydrogen deposit Open Root Pass with Stick Electrode Open Root Pass with STT provides a weld ligament thickness of approximately 0 22 e Superior weld profile n
6. control of and remains the sole responsibility of the customer Many variables beyond the control of Lincoln Electric affect the results obtained in applying these types of fabrication methods and service requirements Subject to Change This information is accurate to the best of our knowledge at the time of printing Please refer to www lincolnelectric com for any updated information LINCOLNE ELECTRIC THE WELDING EXPERTSsu THE LINCOLN ELECTRIC COMPANY 22801 St Clair Ave Cleveland OH 44117 1199 e 216 481 8100 www lincolnelectric com
7. g For 2 0 3 0 70 95mm cable Order K1759 95 Twist Mate to Lug Adapter For connection of lugged cable to Twist Mate connectors 18 457mm long Order K2176 1 WIRE FEEDER OPTIONS STT 10 Wire Feeder The sophisticated STT 10 Process Controller was designed specifically to work with the revolutionary STT Il power source Microprocessor controls make it easy to develop optimal procedures and set the range of operator adjustments Dual procedure control can increase or decrease the energy in the arc without changing the wire feed speed See Publication E8 190 Invertec STT II www lincolnelectric com RECOMMENDED OPTIONS WIRE FEEDER OPTIONS CONT LN 742 Wire Feeder The LN 742 semiautomatic wire feeder features a trigger mode selection for 2 step or 4 step and time controls for burnback spot times and preflow post flow shielding gas Two roll wire drive for positive wire feeding Dynamic braking system minimizes crater sticking problems Tool less quick release wire drive tension system for easy wire on gun changes See Publication E8 20 LN 15 Control Cable Model LN 15 is one of the smallest and most maneuverable wire feeders available on the market today Control Cable model includes STT Capabilities and is compatible with the STT Il power source for outstanding welding performance including pulse welding on a wide variety of steel stainless steel aluminum and alloy materials See Publication E8
8. ground Current 4 6 14 Pin Wire Feeder Control with 42V 115V Auxiliary Power 7 Sense Lead Connection K940 25 25 ft 7 6m Sense Lead Kit included 8 Twist Mate Output Connectors 2 Twist Mate Plugs M15479 Included 9 42V 115V Circuit Breakers 5 10 Power Switch 11 Background Current Control Knob 12 Background Current LED Display 13 Wire Mode Switch 14 Wire Diameter Switch oa A OMN N QUALITY AND RELIABILITY e Electronic and thermostatic protection from current overload and excessive temperatures with thermal indicator light e Three year Lincoln warranty on parts and labor e Manufactured under a quality system certified to ISO 9001 requirements and ISO 14001 environmental standards Printed circuit boards are environmentally UTILIZING STT ON THE STT Il Adjust WIRE FEED SPEED to e control the deposition rate Adjust PEAK CURRENT to e control the arc length Adjust BACKGROUND CURRENT to e control heat input fine Adjust TAILOUT to e control heat input coarse Adjust HOT START to e control the heat input at the start of the weld sf o 7 N 7 omino aX shielded using Lincoln s engineered potting and protective frame trays LINCOLN E ELECTRIC THE WELDING EXPERTSsu 4 Invertec STT II www lincolnelectric com A CLOSER LOOK SYSTEM SELECTION Invertec STT II STT 10 Deluxe System Top wire feeder user interface and added traction with four roll drive sy
9. o wagon tracks e Slight convexity of root weld e Low hydrogen deposit Inside of an 8 in x 375 in STT process using 100 CO and 045 in 1 2mm wire wall API 5L X52 pipe welded in 5G position LINCOLNE ELECTRIC THE WELDING EXPERTS 3 Invertec STT II www lincolnelectric com A CLOSER LOOK COMPARING STT TO CONVENTIONAL PROCESSES WHEN TO USE STT Advantages of STT replacing short arc GMAW e Significantly reduces lack of fusion e Good puddle control e Capable of producing consistent X ray quality welds e Reduced training time e Lower fume generation and spatter e Can use various compositions of shielding gas e 100 CO on mild steel STT is the process of choice for low heat input welds STT is also ideal for e Open root pipe and plate e Thin gauge material automotive e Stainless steel and nickel alloy petrochemical utility and food industry e Silicon bronze automotive e Galvanized steel e Semiautomatic and robotic applications Advantages of STT replacing GTAW e Four times faster than GTAW e Vertical down welding e Reduced training time e Can use various compositions of shielding gas e 100 CO on mild steel e Welds stainless nickel alloys and mild steel e Consistent x ray quality welds FEATURES Key Controls 1 Tailout Control Hot Start Control Peak Current LED Display Peak Current Control Knob 10 Pin Remote Control for Peak and Back
10. r See Publication E8 20 LN 15 Control Cable Model See Publication E8 60 Magnum 200 Gun and Cable Assembly for STT 10 and LN 15 K497 21 for LN 742 K497 1 Magnum Connector Kit for STT 10 and LN 15 K466 10 for LN 742 K466 1 CUSTOMER ASSISTANCE POLICY The business of The Lincoln Electric Company is manufacturing and selling high quality welding equipment consumables and cutting equipment Our challenge is to meet the needs of our customers and to exceed their expectations On occasion purchasers may ask Lincoln Electric for advice or information about their use of our products We respond to our customers based on the best information in our possession at that time Lincoln Electric is not in a position to warrant or guarantee such advice and assumes no liability with respect to such information or advice We expressly disclaim any warranty of any kind including any warranty of fitness for any customer s particular purpose with respect to such information or advice As a matter of practical consideration we also cannot assume any responsibility for updating or correcting any such information or advice once it has been given nor does the provision of information or advice create expand or alter any warranty with respect to the sale of our products Lincoln Electric is a responsive manufacturer but the selection and use of specific products sold by Lincoln Electric is solely within the
11. stem Invertec STT Il K1525 1 STT 10 Wire Feeder K1560 2 Power Source to Feeder Cable K1758 10 Drive Roll Kit KP 1505 035S for 035 0 9mm wire or KP1505 045S for 040 045 1 0 1 1mm wire e Magnum 200 Gun Package K497 21 e Work Cable and Work Clamp STT 10 Wire Feeder Invertec STT II LN 15 Portable System Rugged enclosed feeder a great system for construction or shipbuilding e Invertec STT Il K1525 1 e LN 15 Control Cable Model K1871 1 e Control Cable K1819 10 e Drive Roll Kit KP1696 035S for 0 35 0 9mm wire or KP1696 045S for 040 045 1 0 1 1mm wire e Magnum 200 Gun Package K497 21 e Work Cable and Work Clamp Invertec STT II LN 742 Standard System Two roll drive the most economical system for STT shop welding e Invertec STT Il K1525 1 e LN 742 Wire Feeder with 2 drive rolls K617 1 e Power Source to Feeder Cable K1840 10 e Drive Roll Kit KP653 035S for 035 045 0 9 1 1mm wire or KP653 052S for 045 052 1 1 1 8mm wire e Magnum 200 Gun Package K497 21 e Magnum Connector Kit K466 1 e Work Cable and Work Clamp LN 742 Wire Feeder LINCOLN E l TT II STD c eere THE WELDING EXPERTS 5 www lincolnelectric com RECOMMENDED OPTIONS LINCOLN E ELECTRIC THE WELDING EXPERT Ssn GENERAL OPTIONS Power Source Remote Output Control Remotely controls peak and background current 10 pin remote control with 25 ft 7 6m
12. t input for reduced distortion and burnthrough as well as proper penetration e Adjustable Hot Start controls the heat at the start of the weld e Manufactured under a quality system certified to ISO 9001 requirements and ISO 14001 environmental standards e Three year Lincoln warranty on parts and labor NEXTWELD IC n be produced Description owa EJE e JEEE Base Unit Includes Twist Mate Cable Plugs Qty 2 STT Il Sense Lead Kit 25 ft 7 6m Recommended General Options Power Source Remote Output Control Inverter and Wire Feeder Cart Dual Cylinder Kit STT II Sense Lead Kit Coaxial Cable Twist Mate Cable Plug Twist Mate Cable Receptacle Twist Mate to Lug Adapter Recommended Wire Feeder Options STT 10 Wire Feeder LN 742 Wire Feeder LN 15 Control Cable Model Magnum Gun and Cable Assembly Magnum Connector Kit Order K1525 1 STT II 208 230 460 3 60 K1526 1 STT II International 200 220 380 415 440 3 50 60 K1526 2 STT II International 200 208 380 400 415 3 50 60 K1527 1 STT II CE Approved 200 220 380 415 440 3 50 60 K1527 2 STT II CE Approved 200 208 380 400 415 3 50 60 TECHNICAL SPECIFICATIONS Product Number K1525 1 K1526 1 International K1526 2 International K1527 1 CE Approved K1527 2 CE Approved LINCOLN ELECTRIC THE WELDING EXPERTSsu Product Name Input Rated Output Power Invertec 208 230 460 3 60 STT Il 200 220 380 415 440 3 50 60 200 208 380 400
13. ument NX 1 10 STT Surface Tension Transfer is a controlled GMAW short circuit transfer process that uses current controls to adjust the heat independent of wire feed speed resulting in superior arc perform ance good penetration low heat input control and reduced spatter and fumes For more information see Nextweld Document NX 2 20 Conventional CV short STT using CO2 circuit transfer using CO9 and 045 solid wire and 045 solid wire Note reduced spatter and fume The STT Process A STT produces a uniform molten ball and maintains it until the ball shorts to the puddle B When the ball shorts to the puddle the current is reduced to a low level allowing the molten ball to wet into the puddle Peak Lae Tima Pinch Cureni C Automatically a precision PINCH CURRENT wave k form is applied to the short During this time special circuitry determines that the short is about to break and reduces the current to avoid the spatter art a producing explosion D STT circuitry re establishes the welding arc at a low current level E STT circuitry senses that the arc is re established and automatically applies PEAK CURRENT which sets the proper arc length Following PEAK CURRENT internal circuitry automatically switches to the BACKGROUND CURRENT which serves as a fine heat control l A Invertec STT II THE WELDING EXPERTS 2 www lincolnelectric com LINCOLN ELECTRIC A CL
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