Lincoln Electric INVERTEC SVM129-B manual

SVM129-B OCTOBER, 2006 Safety Depends on Y ou Lincoln arc welding and cutting equipment is designed and built with safety in mind. However , your overall safety can be increased by proper installation . . . and thoughtful operation on your part. DO NOT INST ALL, OPERA TE OR REP AIR THIS EQUIPMENT WITHOUT READ- ING THIS MANUAL AND THE SAFETY PRECAUT[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FOR ENGINE powered equipment. 1.a. T urn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ____________________________________________________ 1.b. Operate engines in open, well-ventilated areas or ven[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ARC RA YS can burn. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding. Headshield and filter lens should conform to ANSI Z87. I standards. 4.b. Use suitable c[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC FOR ELECTRICALL Y powered equipment. 8.a. T urn off input power using the disconnect switch at the fuse box before working on the equipment. 8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufacturer ’ s recom[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC PRÉCAUTIONS DE SÛRETÉ Pour votre propre protection lire et observer toutes les instructions et les précautions de sûreté specifiques qui parraissent dans ce manuel aussi bien que les précautions de sûreté générales suiv- antes: Sûreté Pour Soudage A L ?[...]

MASTER T ABLE OF CONTENTS FOR ALL SECTIONS v v INVERTEC STT Page Safety .................................................................................................................................................i-iv Installation ...................................................................................................................[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T ABLE OF CONTENTS - INST ALLA TION SECTION - Section A-1 Section A-1 INVERTEC STT Installation ............................................................................................................................. Section A T echnical Specifications (Codes 1[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC INST ALLA TION A-2 A-2 INVERTEC STT ST ANDARD VOL T AGE INPUT CURRENT A T RA TED OUTPUT 208/230/460/3/60 HZ 32/30/16 200/220/380/415/440/3/50/60 HZ 33/30/18/17/16 TECHNICAL SPECI[...]

INST ALLA TION A-3 A-3 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ST ANDARD VOL T AGE INPUT CURRENT A T RA TED OUTPUT 200/208/3/50/60 HZ 36/34 200/208/380/400/415/3/50/60 HZ 36/34/20/19/18 TECHNICAL SPECIFICA[...]

INST ALLA TION A-4 A-4 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ELECTRIC SHOCK can kill. • Only qualified personnel should perform this installation. •T urn the input power OFF at the disconnect switch [...]

INST ALLA TION A-5 A-5 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC INPUT CABLE INST ALLA TION AND CON- NECTION A cable strain relief is provided at the supply line entry and is designed to accommodate cable di[...]

A-6 INST ALLA TION A-6 INVERTEC STT II FIGURE A.2 RECONNECT P ANEL I NPUT VOL T AGE RECONNECT PROCEDURE As shipped from the factory , multiple voltage machines are internally configured for the highest input voltage (440-460 V AC), for Codes 1 1092 and below and (380- 415 V AC), for Codes 1 1 1 15 and 1 1 1 16. 1. For Connections to 440 or 460 V AC[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section B-1 Section B-1 INVERTEC STT T ABLE OF CONTENTS - OPERA TION SECTION - Operation ............................................................................................................................... Section B Safety Precautions ....................[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC B-2 B-2 INVERTEC STT ELECTRIC SHOCK can kill. • Do not touch electrically live parts or electrode with skin or wet clothing. • Insulate yourself from work and ground. • Alw[...]

OPERA TION B-3 B-3 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC GENERAL DESCRIPTION The Invertec STT II is a 225-ampere inverter based arc welding power source specifically designed for the STT welding process.[...]

OPERA TION B-4 B-4 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 1. POWER SWITCH: T urns output power ON and OFF. This switch also controls auxiliary power available through the 14-pin Wire Feeder Receptacle. 2A[...]

OPERA TION B-5 B-5 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC 6. WIRE SIZE SELECT SWITCH: This toggle switch selects between electrode diameters of .035” (1 mm) and smaller or .045” (1.2 mm) and larger . [...]

OPERA TION B-6 B-6 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC WELDING P ARAMETERS AND GUIDE- LINES The Invertec STT II is neither a constant current (CC) nor a constant voltage (CV) power source. In general, [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC OPERA TION B-7 B-7 INVERTEC STT WELDING PROCEDURES FOR STT II - (Steel) Horizontal Fillet (See T able B.1 and B.2) T able B.1 100% CO 2 Gas Shield (Set for Steel Mode) T able B.2[...]

NOTES B-8 B-8 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T ABLE OF CONTENTS - ACCESSORIES - Accessories ........................................................................................................................... Section C Options/Accessories .................................................................[...]

ACCESSORIES C-2 C-2 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC STT control board to accept PEAK and BACK- GROUND inputs on this connector rather than from the front panel controls. If this short is removed, t[...]

ACCESSORIES C-3 C-3 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC LN-742 or STT -10 WIRE FEEDER CONNECTION INSTRUCTIONS The LN-742 or STT -10 is the recommended wire feed- er for use with the Invertec STT II. Re[...]

C-4 C-4 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC ACCESSORIES CONNECTION DIAGRAM - INVERTEC STT II 4-9-99 M17657-3 CABLES AND LEADS SHOULD ELECTRODE LEAD BE TAPED TOGETHER. WORK (SHOULD BE LOCATED AS CLOSE A[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section D-1 Section D-1 INVERTEC STT T ABLE OF CONTENTS -MAINTENANCE- Maintenance ......................................................................................................................... Section D Input Filter Capacitor Discharge Procedure..........[...]

MAINTENANCE D-2 D-2 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC W ARNING Failure to follow this capacitor discharge proce- dure can result in electric shock. INPUT FIL TER CAP ACITOR DISCHARGE PROCEDURE 1. T u[...]

MAINTENANCE D-3 D-3 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC PREVENTIVE MAINTENANCE 1. Perform the following preventive mainte- nance procedures at least once every six months. It is good practice to keep a[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC MAINTENANCE D-4 D-4 INVERTEC STT 12 4 17 5 6 9 8 7 10 16 15 13 18 14 19 11 1 3 2 FIGURE D.2 – MAJOR COMPONENT LOCA TIONS 1. BASE ASSEMBL Y 2. REAR NAMEPLA TE 3. RESISTORS 4. F [...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section E-1 Section E-1 INVERTEC STT Theory of Operation ............................................................................................................. Section E General Description .....................................................................[...]

GENERAL DESCRIPTION The Invertec STT is a 225 ampere, inverter based, arc welding power supply specifically designed for the Surface T ension T ransfer (STT) welding process. It cannot be classified as either a constant current (CC) or a constant voltage (CV) machine. The STT pro- duces current of a desired waveform to reduce spatter and fumes. The[...]

RECONNECT , PROTECTION BOARD, RECTIFICA TION AND PRECHARGE The reconnect panel allows the user to switch to low or high input voltage to match the input line voltage. The AC input voltage is rectified and applied to the driver board. The driver board contains precharging circuitry for safe charging of the input filter capacitors. Once the capacitor[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC THEOR Y OF OPERA TION E-4 E-4 INVERTEC STT NOTE: Unshaded areas of Block Logic Diagram are the subject of discussion. FIGURE E.4 – SWITCH BOARDS SWITCH BOARDS There are two swi[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC THEOR Y OF OPERA TION E-5 E-5 INVERTEC STT FIGURE E.5 – MAIN TRANSFORMER, OUTPUT RECTIFICA TION AND CHOKE MAIN TRANSFORMER, OUTPUT RECTIFICA TION AND CHOKE Each switch board wo[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC THEOR Y OF OPERA TION E-6 E-6 INVERTEC STT FIGURE E.6 – CONTROL BOARD, IGBT DRIVE AND MODULE CONTROL BOARD, IGBT DRIVE AND MODULE The control board monitors the directives of t[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC THEOR Y OF OPERA TION E-7 E-7 INVERTEC STT FIGURE E.7 – POWER BOARD AND REMOTE PROTECTION BOARD POWER BOARD The power board creates a pulse transformer drive sig- nal, which is[...]

FIELD EFFECT TRANSISTOR (FET) OPERA TION An FET is a type of transistor . FET s are semiconduc- tors well suited for high-frequency switching. Drawing A above shows an FET in a passive mode. There is no gate signal, zero volts relative to the source and, therefore, no current flow . The drain terminal of the FET may be connected to a voltage supply[...]

PULSE WIDTH MODULA TION The term PULSE WIDTH MODULA TION is used to describe how much time is devoted to conduction in the positive and negative portions of the cycle. Changing the pulse width is known as MODULA TION. Pulse Width Modulation (PWM) is the varying of the pulse width over the allowed range of a cycle to affect the output of the machine[...]

PROTECTIVE CIRCUITS Protective circuits are designed into the Invertec machine to sense trouble and shut down the machine before the trouble damages the internal machine com- ponents. Both overload and thermal protection circuits are included. OVERLOAD PROTECTION The machine is electrically protected from producing abnormally high output currents d[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC Section F-1 Section F-1 INVERTEC STT T roubleshooting & Repair Section ................................................................................ Section F How to Use T roubleshooting Guide ..................................................................[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC HOW TO USE TROUBLESHOOTING GUIDE Service and repair should be performed by only Lincoln Electric Factory T rained Personnel. Unauthorized repairs performed on this equipment may [...]

ELECTRIC SHOCK can kill. Have an electrician install and service this equipment. T urn the machine OFF before working on equipment. Do not touch electrically hot parts. Sometimes machine failures appear to be due to PC board failures. These problems can sometimes be traced to poor electrical connections. T o avoid prob- lems when troubleshooting an[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-4 F-4 INVERTEC STT Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do not [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-5 F-5 INVERTEC STT TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you do not [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-6 F-6 INVERTEC STT Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do not [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-7 F-7 INVERTEC STT TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you do not [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC F-8 F-8 INVERTEC STT TROUBLESHOOTING & REP AIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you do not [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-9 F-9 INVERTEC STT Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do not [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-10 F-10 INVERTEC STT TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you do no[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-11 F-11 INVERTEC STT Observe Safety Guidelines TROUBLESHOOTING GUIDE detailed in the beginning of this manual. CAUTION If for any reason you do no[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-12 F-12 INVERTEC STT TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual. CAUTION If for any reason you do no[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-13 F-13 INVERTEC STT T1 AUXILIAR Y TRANSFORMER TEST W ARNING Service and repair should be performed by only Lincoln Electric factory trained perso[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-14 F-14 INVERTEC STT T1 AUXILIARY TRANSFORMER PLUG J31 PLUG J30 FIGURE F .1 – T1 AUXILIARY TRANSFORMER AND J30/J31 LOCA TION T1 AUXILIAR Y TRANS[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-15 F-15 INVERTEC STT 5. Locate the primary lead molex plug (J21) just behind the reconnect panel assembly on the right side of the machine. Check [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-16 F-16 INVERTEC STT 8. If the correct secondary voltages are present (according to T able F .1), the T1 transformer is functioning properly . 9. [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-17 F-17 INVERTEC STT ELECTRIC SHOCK can kill. • With input power ON, there are high voltages inside the machine. Do not reach into the machine o[...]

NOTES F-18 F-18 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC T4 AUXILIAR Y TRANSFORMER TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may res[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-20 F-20 INVERTEC STT T4 AUXILIAR Y TRANSFORMER TEST (continued) FIGURE F .3 – OUTPUT CHOKE/IGBT MODULE SPLICED CONNECTION LOWER TRAY AREA OUTPUT[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-21 F-21 INVERTEC STT T4 AUXILIAR Y TRANSFORMER TEST (continued) 5. Disconnect the current sensing Plug J1 from the control PC board. Carefully rem[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-22 F-22 INVERTEC STT T4 AUXILIAR Y TRANSFORMER TEST (continued) 7. Carefully lift and tilt the Invertec STT machine onto its right side. See Figur[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-23 F-23 INVERTEC STT T4 AUXILIAR Y TRANSFORMER TEST (continued) 1 1. Locate and remove leads #32A, #32B and #33A, #33B from the T4 transformer tab[...]

13. Check the secondary AC voltages accord- ing to T able F .2. 14. With the correct 1 15V AC applied to the pri- mary winding (#32 to #33), if any or all of the secondary voltages are missing or low , the T4 auxiliary transformer may be faulty . Replace the T4 auxiliary transformer . 15. After all tests are completed, reconnect the following: Lead[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC INPUT RECTIFIER TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in dan[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-26 F-26 INVERTEC STT INPUT RECTIFIER TEST (continued) FIGURE F .9 - INPUT RECTIFIER LOCA TION INPUT RECTIFIER C A 9 12 B TEST PROCEDURE 1. T urn o[...]

6. Replace the input rectifier when any of the tests are NOT OK. NOTE: When installing a new input rectifier , torque the mounting nuts (in a cross-tightening pattern) to 6 inch-pounds (.7 Nm). T orque ter- minals to 26 inch-pounds (3 Nm). PROCEED T O STEP 7 T O CHECK RELA TED COMPO - NENTS . 7. Inspect main power switch S1 and replace if faulty . [...]

NOTES F-28 F-28 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC CAP ACITOR BALANCE TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-30 F-30 INVERTEC STT CAP ACITOR BALANCE TEST (continued) FIGURE F .10 – SWITCH BOARD TEST POINTS L8441 L8441 SWITCH SWITCH 9 9 12 12 TEST PROCED[...]

5. Adjust the Peak and Background controls to the minimum settings (controls on case front). 6. Jumper together pins "C" and "D" on the 14 pin amphenol. This will energize the output terminals. 7. T est for VDC across terminals #9 and #12 of one switch board and repeat the test for the other switch board. See T able F .4 in this[...]

NOTES F-32 F-32 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SWITCH BOARD TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-34 F-34 INVERTEC STT SWITCH BOARD TEST (continued) FIGURE F .11 - SWITCH BOARD RESIST ANCE TEST TEST PROCEDURE NOTE: There are two switch boards. [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-35 F-35 INVERTEC STT SWITCH BOARD TEST (continued) Apply Positive Apply Negative T est Probe to T est Probe to T erminal T erminal T est Result Co[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-36 F-36 INVERTEC STT Apply Positive Apply Negative T est Probe to T est Probe to T erminal T erminal T est Result Conclusion Repair Action Next Pr[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SNUBBER RESISTORS TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in d[...]

TROUBLESHOOTING & REP AIR F-38 F-38 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SNUBBER RESISTORS TEST (continued) FIGURE F .12 - REMOVING LEADS TEST PROCEDURE 1. Turn of f Invertec STT and disconnect main[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-39 F-39 INVERTEC STT SNUBBER RESISTORS TEST (continued) FIGURE F .13 - SWITCH BOARD TEST POINTS 6. T est for 25 ohms resistance from lead termi- n[...]

NOTES F-40 F-40 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC POWER BOARD TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in danger [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-42 F-42 INVERTEC STT POWER BOARD TEST (continued) FIGURE F .14 – REMOVING THE FRONT P ANEL ASSEMBL Y POWER PC BOARD (Located on Back of Case Fro[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-43 F-43 INVERTEC STT POWER BOARD TEST (continued) FIGURE F .15 – POWER PC BOARD TEST POINTS POWER BOARD J6 J7 J14 L8033 501 504 302 275 211A 305[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-44 F-44 INVERTEC STT POWER BOARD TEST (continued) FIGURE F .16 – SIMPLIFIED TRIGGER CIRCUIT FROM PROTECTION BOARD OVERVOLTAGE PWM OUTPUTS TO POW[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC PROTECTION BOARD TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in da[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-46 F-46 INVERTEC STT PROTECTION BOARD TEST (continued) FIGURE F .17 – PROTECTION PC BOARD TEST POINTS PROTECTION L7915-[ ] 313 311 J8 J15 315 31[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-47 F-47 INVERTEC STT FIGURE F .18 - LEADS #309, #309A A T CR1, CR2 RELA YS CR2 CR1 309A 309 PROTECTION BOARD TEST (continued) 7. If the Capacitor [...]

NOTES F-48 F-48 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TRIGGER CIRCUIT TEST Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in dan[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-50 F-50 INVERTEC STT TRIGGER CIRCUIT TEST (continued) FIGURE F .19 – PLUG J31 LOCA TION PLUG J31 TEST PROCEDURE 1. Turn of f the Invertec STT an[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-51 F-51 INVERTEC STT TRIGGER CIRCUIT TEST (continued) FIGURE F .20 – 14 PIN AMPHENOL AND PLUG J31 PIN ASSIGNMENTS K B I H N L C D M G E F J A 5.[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-52 F-52 INVERTEC STT TRIGGER CIRCUIT TEST (continued) FIGURE F .22 – SIMPLIFIED TRIGGER CIRCUIT DIAGRAM FROM PROTECTION BOARD OVERVOLTAGE PWM OU[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC IGBT MODULE REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment m[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-54 F-54 INVERTEC STT IGBT MODULE REMOV AL AND REPLACEMENT (continued) FIGURE F .23 – OUTPUT CHOKE LEAD DISCONNECTION LOWER TRAY AREA OUTPUT CHOK[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-55 F-55 INVERTEC STT IGBT MODULE REMOV AL AND REPLACEMENT (continued) FIGURE F .24 – PLUG J1 DISCONNECTION LOWER TRAY AREA OUTPUT CHOKE/ IGBT MO[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-56 F-56 INVERTEC STT IGBT MODULE REMOV AL AND REPLACEMENT (continued) FIGURE F .26 – STT PLACED ON ITS RIGHT SIDE MOUNTING BOLTS (5) 7. Carefull[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-57 F-57 INVERTEC STT IGBT MODULE REMOV AL AND REPLACEMENT (continued) FIGURE F .27 – IGBT MODULE CONNECTIONS E E IGBT MODULE C G STT II For step[...]

NOTES F-58 F-58 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC SWITCH BOARD REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipment may result in[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-60 F-60 INVERTEC STT SWITCH BOARD REPLACEMENT (continued) FIGURE F .28 – SWITCH BOARD REMOV AL PROCEDURE NOTE: If a test indicates that a switch[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-61 F-61 INVERTEC STT SWITCH BOARD REPLACEMENT (continued) 6. Using the 7/16" wrench, remove the two hex head capacitor screws located in the [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-62 F-62 INVERTEC STT SWITCH BOARD REPLACEMENT (continued) TEST AFTER REP AIR OF SWITCH BOARDS AND/OR CAP ACITORS The following test must be perfor[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-63 F-63 INVERTEC STT SWITCH BOARD REPLACEMENT (continued) ELECTRIC SHOCK can kill. • With input power ON, there are high voltages in the machine[...]

NOTES F-64 F-64 INVERTEC STT Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC CAP ACITOR REMOV AL AND REPLACEMENT PROCEDURE Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this eq[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-66 F-66 INVERTEC STT CAP ACITOR REMOV AL AND REPLACEMENT PROCEDURE (continued) FIGURE F .30 – OUTPUT CHOKE LEAD DISCONNECTION LOWER TRAY AREA OU[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-67 F-67 INVERTEC STT CAP ACITOR REMOV AL AND REPLACEMENT PROCEDURE (continued) FIGURE F .31 – PLUG J1 DISCONNECTION LOWER TRAY AREA OUTPUT CHOKE[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-68 F-68 INVERTEC STT CAP ACITOR REMOV AL AND REPLACEMENT PROCEDURE (continued) FIGURE F .33 – STT PLACED ON ITS RIGHT SIDE MOUNTING BOLTS (5) 7.[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-69 F-69 INVERTEC STT CAP ACITOR REPLACEMENT NOTE: Capacitors must always be replaced in matched sets (C1 and C2 as a set). When replacing Capacito[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-70 F-70 INVERTEC STT 15. Place the machine on its side as shown in Figure F .35. Slide the plastic retaining insu- lators that go through the base[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-71 F-71 INVERTEC STT 17. Remove the two 7/16” hex bolts that hold the capacitor to the switch board. See Figure F .36. 18. Loosen the set screw [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-72 F-72 INVERTEC STT 19. Install the new capacitor and tighten the two 7/16” hex bolts to a torque of 55 inch-pounds (6 Nm). T ighten these bolt[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC OUTPUT RECTIFIER REMOV AL AND REPLACEMENT Service and repair should be performed by only Lincoln Electric factory trained personnel. Unauthorized repairs performed on this equipm[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-74 F-74 INVERTEC STT OUTPUT RECTIFIER REMOV AL AND REPLACEMENT (continued) FIGURE F .39 – CHOKE LEAD/HEA T SINK CONNECTION CHOKE LEAD HEAT SINK [...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-75 F-75 INVERTEC STT OUTPUT RECTIFIER REMOV AL AND REPLACEMENT (continued) FIGURE F .40 – MAIN TRANSFORMER DIODE CONNECTIONS MAIN TRANSFORMER SE[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-76 F-76 INVERTEC STT OUTPUT RECTIFIER REMOV AL AND REPLACEMENT (continued) FIGURE F .41 – SWITCH BOARD/CAP ACITOR ASSEMBL Y THROUGH-BOL TS THROU[...]

Return to Section TOC Return to Section TOC Return to Section TOC Return to Section TOC Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC TROUBLESHOOTING & REP AIR F-77 F-77 INVERTEC STT RETEST AFTER REP AIR Retest the INVERTEC STT : • If it fails any test and the test requires removing or replacing any mecha[...]

INPUT FIL TER CAP ACITOR CONDITIONING If the machine will not produce output when turned on and the following two conditions exist: The machine is connected to operate at an input voltage of 380 V AC or higher and Power has not been applied to the machine for a long period of time (many months). Then. . . The Input Filter Capacitor Protection Circu[...]

Return to Master TOC Return to Master TOC Return to Master TOC Return to Master TOC INVERTEC STT Section G-1 Section G-1 T ABLE OF CONTENTS - ELECTRICAL DIAGRAMS SECTION - Electrical Diagrams ...............................................................................................Section G Wiring Diagram - Entire Machine - Codes 10151-10153 -[...]

G-2 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II + - ELECTRICAL SYMBOLS PER E1537 H1 T 1 FAN MO TOR G F E J A I K C D M L B N H 75 76 77 31 32 41 42 2 4 81 82 21 GND SPARE 42 V AC T3 CURRENT TRANSFORMER 1 4 T2 MAIN TRANSFORMER R3 OFF ON H 1 TP1 TP3 TP2 I I 5 8 D1 D2 D3 CHOKE L3 CONTROL BOARD 10K 2W R11 307 308 309 310 302 303 304 POWER BOARD [...]

G-3 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II R 3 2A 3 2B 15 1 6 J 22 R B 1 8V 32C 43A R U 3 18V 501 B 504 W 4 5 5 275 1 8 6 3 3 11 10 J 6 1 212A 9 7 212 352 212B 503A Y 301 305 245 223 8 11 3 1 3 5 03 2 4V 351 244 CASE CASE BACK PLATFORM 4 AMP S BOTTOM S OUTSIDE I Y Y 4 ,5 12D N O O 12 H 3 H1 FAN SLOW 12B RIGHT MO TOR BLOW H1 1 J11 6 5 37[...]

G-4 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II G-4 Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Wiring Diagram - Entire Machine - Codes 11090 - 11092 - (G4500) NO TE: Th[...]

G-5 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II + - ELECTRICAL SYMBOLS PER E1537 12 34 1 3 4 6 1 61 0 5 { 1 4 8 5 H1 T1 FAN MOTOR G F E J A I K C D M L B N H 7 5 7 6 77 31 32 41 42 2 4 81 82 21 GND SPARE 42 VAC T3 CURRENT TRANS FORMER 1 4 T2 MAIN TRANSFORMER R3 OFF ON H1 TP1 TP3 TP2 I I 5 8 D1 D2 D3 CHOKE L3 CONTROL BOARD 10K 2W R11 307 308 [...]

G-6 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II J28 1 1 50V 0.1 C413 +15V_REM 50V 0.1 C 411 +15V_REM REM REM 3.92K R463 METER_2 METER_1 PB_SCALED 1.00K R436 3.92K R461 J28 10 J28 6 J 28 3 1 5.0K R437 10.0K R431 OCI4 Vcc GND HP2231 5 8 1.00K R432 0.01 W4 FILE: G2781_1D1 +PWR +VIN - PWR + VIN + PWR BACK GROU ND M ETER - VIN POWER TO BOARD 4 2 [...]

G-7 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II G-7 Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Schematic - Control P C Board - Codes 10151 - 11092 - (G2781 Sheet 2 of 2[...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC PC Boar d Assembly - Contr ol - Codes 10151 - 11092 - (G2782) NO TE: Linc oln Ele[...]

G-9 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II G-9 Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Schematic - Control P C Board - Codes 11115 - 11116 - (G4649 Sheet 1 of 2[...]

G-10 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II G-10 Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Schematic - Control P C Board - Codes 11115 - 11116 - (G4649 Sheet 2 of[...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC PC Boar d Assembly - Contr ol - Codes 11115 - 11116 - (G4648) NO TE: Linc oln Ele[...]

G-12 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II X4 14 13 12 P6 J6 4 267 R24 4.75K R23 P6 J6 5 D12 5.11K R25 D10 D8 C11 P6 J6 10 LM350 ADJ OUT IN X5 33.2K R13 J14 4 D11 500 50V C10 15.0K R14 P6 J6 9 15J 50V TP2 D9 C7 X4 1 2 3 Ch'ge.Sht.No. COM +24V COM COM C 24Vac A ON 3 PLACE DECIMALS IS + .OO2 ON 2 PLACE DECIMALS IS + .O2 ON HOLES SIZ[...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II CAPACITORS = MFD/VOLTS ITEM REQ'D P ART NO. I DENTIFICATION INDUCTANCE = HENRYS D C B F E POWER BOARD X 1 X5 C1 C3 C10 X4 TP2 TP1 J6 J14 J7 OCI1 Q 5 Q40 R44 R 1 L8033-[ ] X67 X68 R69 R2 R3 R4 D5 R21 R22 R16 R17 R18 R19 C5 C7 R9 R10 R42 R14 R13 R12 R11 R20 D13 R15 D10 D8 DZ1 D11 D9 C11 C14 DZ6 [...]

G-14 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II ON 2 PLACE DECIMALS IS + .O2 WITH PUBLISHED STANDARDS ON HOLES SIZES PER E-2056 SUPPLY POWER Ch'ge.Sht.No. RESISTORS = Ohms ( CAPACITORS = MFD 1A, 400V DIODES = BASE DRIVE 2 AMP S ymmetric Gate D rive Layout UNLESS OTHERWISE SPECIFIED) UNLESS OTHERWISE SPECIFIED) (UNLESS OTHERWISE SPECIFI[...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II J12 J13 R15 R18 R17 R16 R14 R13 R10 R12 R9 R11 DZ1 C17 Q1 R6 D4 D1 D3 D2 R1 C12 C15 C16 OCI1 D5 R3 R2 D10 D11 D 12 D13 R8 D6 D7 D8 D 9 C10 C9 Q2 C8 DZ3 R7 C14 X2 C5 DZ2 R5 R4 C6 S TT DARLINGTON DRIVE I TEM REQ'D PART NO. I DENTIFICATION CAPACITORS = MFD/VOLTS XXX XXX XXX XXX XXX XXX XXX XXX XX[...]

G-16 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II G-16 Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Schematic - IGB T Drive Boar d - Codes 11090 - 11116 - (L12144) NO TE: [...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC PC Boar d Assembly - IGB T Drive - Codes 11090 - 11116 - (L12145) NO TE: Linc oln[...]

G-18 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II W W R 6 00mA 40V Q7 1W 3.3V DZ5 1 .00K R12 1/2W 1 R15 100V 1A Q2 600mA 40V Q6 15.0K R10 50V 2700p C2 47.5 R 35 1N4936 D9 600mA 40V Q5 1W 10V DZ1 1N4936 D3 1 W 6.2V DZ6 1 00V 1 A Q3 1W 10V DZ3 1/2W 1 R11 1.50K R7 1 N4936 D5 22.1K R16 1N4936 D2 4 0V 6 00mA Q4 2 21 R4 100 R5 1.00K R14 C1 2 0 R13 [...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC PC Boar d Assembly - Switch - All Codes - (L8441) NO TE: Linc oln Elec tric assum[...]

G-20 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II G-20 Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Schematic - Driver Boar d - All Codes - (S20799) NO TE: Linc oln Elec t[...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC PC Boar d Assembly - Driver - All Codes - (L9134) NO TE: Linc oln Elec tric assum[...]

G-22 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II G-22 Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Schematic - Pr otection PC Boar d - Codes 10151 - 11092 - (M16097) NO T[...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC PC Boar d Assembly - Pr otection - Codes 10151 - 11092 - (L7915) NO TE: Linc oln [...]

G-24 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II G-24 Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Schematic - Pr otection PC Boar d - Codes 11115 - 11116 - (M20352) NO T[...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC PC Boar d Assembly - Pr otection - Codes 11115 - 11116 - (L12235) NO TE: Linc oln[...]

G-26 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II G-26 Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Schematic - Current Sense PC Board - All Codes - (S21410) NO TE: Linc o[...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC PC Boar d Assembly - Current Sense - All Codes - (M17591) NO TE: Linc oln Elec tr[...]

G-28 ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II G-28 Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Schematic - Remote Pr otection PC Boar d - All Codes - (M17609) NO TE: [...]

ELEC TRICAL DIA GRAMS INVER TEC S TT & S TT II Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Se ct io n T OC Re tur n to Ma st e r T O C Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC Re tur n to Ma ste r T OC PC Boar d Assembly - Remote P rotection - All Codes - (L9657) NO TE: Linc oln Ele[...]