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Lincoln Electric INVERTEC SVM158-A User's Manual

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Contents

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4. Mss p Niu xum RECONNECT 193 A131 W 102 3 1150 7 AY pe 147 160V SV 22 Lo 5 O ap 13K C21 112 17 IL 1OOBY PRIMARIES E23 4947 TRANSFORMER 202 203 246 amp 207 BOLT ON WITH FILTER APS zl NEGATIVE INPUT RECTIFIER x2 a 003 N Y17 3V E 4 4W UNLESS ATHERWISE SPECIFIED UNLESS UTHEFMISE SPECIFIED 022 51V UNLESS DTHERWISE SPECIFIED Ohms
5. mu 68LE9 n 0 R110 25V 099 E zio NES y TTSK 2 Tel 74 200V al d 13 o gt 20 ESERE Br 4 0 AD DATAI 3 gt C86 Em DATAIO 1 o a 210 022 5 ER 4 12 _ 5 cook X 5VA 9 9 175 40V 507 TOOK 25V 080 15 AD_DATAIO S l AD DATAILI 02 50 075 08213 AD 2 SHT 1 MOSI 12 507 15 22 D 5 5 SW D RIA3 13 0832 AD DATADI D 100K SHT STROBE_AD coNVST AD_DATAI41 SHT 4 POT_CS 4 11 TS 600 13 14 vs ces Ales pes 0 AD DATAISI A aia ADCS 24 py 08619 AD DATAI6I Sw 20 xis 087 6 DATAITI A D CONVERSION 02 23 vat 088 mE 1 2 07802 n DATAISI 12 501 95125 pe VBL 089 SCK 14 10 SW 18 081013 AD_DATAILO SHT 1 CLK SRON it 13 n 17 2 ts 00 Look 056 055 E 7K y 03 100 100 100 100 100 100 100 100 100 100 SAWTOOTH GENERATOR E 2005 200 28 a a iB 8 d AUS NC28 SHT 1 SYS_RESET jz jz jz jz je je jz 30V 4 23 4 1 24 1 24 iw 1 24 1 24 1 24 1 24 1 24 1 24 iw Z E E 15
6. 58469 5 5 DATAIO 15 6 OSP_READY 36 5V gt DSP READY _34 pe apy o gt SHT 2 e EPUM SHT 1 SHT 1 E 50 vccp w bis Rw DSP REN olo smi OUTPUT ON 74 An INO wi DSP_WE A 13 ADCINL IOPAZ pH SPIS 3 SHT 3 V AD 74 ADCIN2 0597 55 lt 5 Ve mmm L139 Voies 185 19 15 120 2 SEES SHT 1 ie ptu 170184 184 16 Ede SHT 2 tl 55 1 SHT 1 142 170142 votes 181 R W SHT 1 apciNS wafe E smi 207 acr packs 180 smi 05 0110 148 0145 yote li ADDRILLI 78 ADCIN6 BRL DSP_CLK 2 157 DSP DI91 146 179 ADDRILOI 79 x2 94 155 PGCKL 0 700 mm 1 0146 1 0179 ADCIN7 PWM1 CMPL gt SHT 1 SHT 2 15SPI 5 18 WES 05 _0181 1471 9147 1 0178 178 00819 ADCINB IOPA3 PWM2 CMP2 29 NOS SHT 1 05 077 148 018 ADDRIBI 90 ADCINS IOPA2 PwM3 CMP3 96 2 S sHT 1 ES kim i ind QUPULON 09 yore 116 SHT 3 LAU 89 ADCINLO PWMA CMP4 37 SPI CS3 lon vestis DATAI I 88 5 28 mE XSHT 1 MODE PROGRAM dm E SHT 1 SHT 1 5 52 1 0151 1 0174 16 DATAIBI 83 ApCINI2 PWM6 CMP6 99 m nowe 105 SHT 1
7. Output Voltage Sense 4 E Input Relay Control Auxiliary 8 Soft Start Control m 115VAC 42VAC Transformer 8 Capacitor Feedback 2 2 8 OJO Machine Control Supply 15VDG 1 5VDC 5 8 Board SPI Supply 15 0 5VDC Canal E RS232 Supply 5VDC o RS232 SPI Communications T amp 15VDC 5VDC Supply 515 5 4 UN Remote Control 8 Trigger Remote Pil Board No used if APP Panel Panel 6 Pin E Amphenol 8 Output Weld 1 oe Terminals Optional Solenoid Output Potentiometer OUTPUT RECTIFIER AND CHOKE The output rectifier receives the AC output from the main transformer secondary and rectifies it to a DC voltage level Since the output choke is in series with the negative leg of the output rectifier and also in series with the welding load a filtered DC output is applied to the machine s output terminals O10 515 0 gt 218 5 2 a NOTE Unshaded areas of Block Logic Diagram are the subject of discussion V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Return to Section TOC olo OJO 5 5 0 815 218
8. 68LE9 1 1 1 RES 3 5 SHT 3 o RS JIN R10 1 45V v 09 cae A 2 vee a 27 C143 o gt MISCO ui 16 6 1119 372761 72 86 89 109171135144 25 5V SK Gor S LOK 5V SHT 4 R42 SA e Dio RISK mE co l 107 105 C93 C109 C106 X24 cus _ 120 18V as R18 7 ES 10 91 01 01 01 2 22 91 01 1 gio Ny n Pm Tso Tso MC68332GCPV25 T av Tso c c 1000 3W I n 2 12 20 35 48 54 62 74 82 91107120128 13426 DATAI0 15 m i x 019 20 515 E 4 14 4 2 2 4 4 2 21K EP jn 301 P n RIS 15 4 t7 DATAUZI t 5 175 X23 02 775 asc Tro 29 Q8 CAPI 4 6104 OUT 020 5 53 0316 DATAI6 TOOK 38V_ S B0746AN 05 6 15 DATAUI mi MISC as 10 Di SH R63 NSA VHCL4D 7 TLHCS3PW l Ao L Vss 05 05 40V 51V 4T00pF 8 DATAI3I w 50 16 8 EE M 1 2 J6 5 95r mu DATAIBI 1 084 8 FR 100pF 02 Ed X 100V 70 3 VPP gt SHT 5 s ROL Reg D E D gt ais 5 02 175 Wo cip nis OSA Zn TOOK p THERMAL LED 06 100K 5 820pF 175 BR gt 50V 13 yop L 25 060 L_14 yp 8 took 1009F 18V 37 52 8 P d
9. ojo 515 o HIE Plug P52 5 5 31 54 541 c V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 2 5 Return to Section Return to Master TOC o 7 5 35 LEAD IDENTIFICATION F 35 TROUBLESHOOTING amp REPAIR AUXILIARY TRANSFORMER NO 1 TEST continued TABLE F 4 NORMAL EXPECTED VOLTAGE 31 TO 532 115 VAC 42 TO 541 42 VAC 24 TO 541 24 VAC 54 TO 541 28 VAC 7 Carefully apply the correct input voltage to the V350 PRO and check for the correct sec ondary voltages per table F 4 Make sure the reconnect jumper lead and switch are config ured correctly for the input voltage being applied Make sure circuit breaker CB3 is functioning properly NOTE The secondary voltages will vary if the input line voltage varies If the correct secondary voltages are present the auxiliary transformer is functioning proper ly If any of the secondary voltages are miss ing or low check to make certain the primary is configured correctly for the input voltage applied See Wiring Diagram WARNING High voltage is present at primary of Auxiliary Transformer 9 If the correct input voltage is applied to the primary and the sec
10. GENERAL INFORMATION ELECTRICAL SYMBOLS PER E1537 CAPACITORS 022 50V UNLESS OTHERWISE SPECIFIED NOTES ER IEE EN SERIETA RESISTORS Ohms 1 4W UNLESS OTHERWISE SPECIFIED LABELS 1 WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD THIS DIAGRAM MAY DIODES 1A 400V UNLESS OTHERWISE SPECIFIED SUPPLY VOLTAGE NET NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE NUMBER O POWER SUPPLY SOURCE POINT 57 COMMON CONNECTION FRAME CONNECTION EARTH GROUND CONNECTION THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY THE LINCOLN ELECTRIC COMPANY AND IS NOT TO BE REPRODUCED DISCLOSED OR USED WITHOUT THE EXPRESS WRITTEN PERMISSION OF THE LINCOLN ELECTRIC COMPANY CLEVELAND U S A MANUFACTURING TOLERANCE PER E2056 X INFO Chg Sheet No DESIGN INFORMATION REFERENCE EQUIPMENT TYPE Digital Systems JON 3 PLACE DECIMALS 15 002 DRAWN BY JP TK ON ALL ANGLES IS 5 OF A DEGREE 0 27 2000H SUBJECT Dru ee Schematic Digital Power Supply mos ____ SCALENONE DIE I 30 98 DRWNGNo 3631 Return to Section TOC Return to Master TOC NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual LINCOLN Return to Section Return to Master TOC Return to Section TOC Return to Master TOC O
11. F 59 Advanced Process Panel Removal and Replacement F 63 Remote Board Removal and Replacement F 69 Snubber Board Removal and 73 Power Board Removal and 75 Input Rectifier Removal and Replacement F 79 Output Rectifier Modules Removal and Replacement F 83 Current Transducer Removal and F 87 Retest after F 92 V350 PRO LINCOLN 5 Section F 1 Return to Section Return to Master TOC Return to Section TOC O10 515 0 gt 218 5 2 a Return to Section Return to Master TOC Return to Master TOC F 2 TROUBLESHOOTING amp REPAIR HOW TO USE TROUBLESHOOTING GUIDE CAUTION Service and repair should be performed by only Lincoln Electric Factory Trained Personnel Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty For your safety and to avoid Electrical Shock please observe all safety notes and precautions detailed throughout this manual This Troubleshooting Guide is provided to help you locate and repair possible machine malfunctions Simply follow the three
12. 324105 ATddNS H3MOd BOARD 10 801111 TIS 3009 NOWIAO2 9 9NIAVH 51081502 30 SINSNOdWOD 12VX3 3H MOHS 10 AWA SIHL QHvO8 31314409 V 40 JHL 9 112349 LAOHL ew AYW QHVOS 1102812 V NO HO SINSNOdAOJ 031410345 SS37Nm A007VI 530010 5 13891 03141934S 10 5531 1 7 lt 0 550151539 M 0031410345 SSINUSHLO 6637141 A0S ZZ0 044 580129492 ax ga LEGS 5108445 792 2313 aasn ON 1597 NOILVAHOANI 1953339 DISPLAY BLOCK DISPLAY BLOCK RIGI THERMAL LEDS XT MC14489DW Vss 2 D C19 01 OV MC144890W 144890 Vdd X6 XV Mc144890W Vss ELECTRICAL DIAGRAMS 4489DW
13. OV 650 GND This diagram is for reference only It may not be accurate for all machines covered by this manual ON NOTE HRU VIA HE BOARD EN PL VIA 1 NED ON IONS 0 KSC JSHBU 5 VIA 4 OCA Si MOVE R22 AND R23 CONNECT A NORMALLY R BOARDS OLLOWS BOARDS 5 5 ISPLAY L 11108 SCHEMATIC DISPLAY PRINTED CIRCUIT BOARD G 11 LINCOLN 5 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 UuunjeH DOL J91Se N 01 uunjeH DOL uonoes DOL uonoes DOL uonoes DOL uonoes Return to Section Return to Master TOC Return to Section TOC Return to Master TOC olo o E 5 g 0 12 2 e 5 3 Return to Section Return to Master TOC G 12 PC BOARD ASSEMBLY DISPLAY ELECTRICAL DIAGRAMS 9 12 1 11130 0 DESCRIPTION DISPLAY P C BOARD BLANK REF ONLY L11166 1 FLEX CIRCUIT 2 3 4 01 02 T15176 2 E3539 LED SPACER 0 140 HIGH ELECTRICAL INSULATING COMPOUND
14. o 5 B tc Return to Section TOC Return to Master TOC Q 5 F 39 F 39 TROUBLESHOOTING AND REPAIR CURRENT TRANSDUCER TEST continued TABLE F 5 EXPECTED TRANSDUCER FEEDBACK OUTPUT LOAD CURRENT VOLTAGE 8 Check the feedback voltage from the current 9 If for any reason the machine cannot be transducer using a resistive load bank and loaded to 300 amps Table F 5 shows what with the V350 PRO in mode 200 Mode 200 is feedback voltage is produced at various cur a constant current test mode This mode can rent loads ih trem 10 If the correct supply voltages are applied to by pressing and holding the Mode Select but the current transducer with the machine ton while turning the machine on NOTE MODE loaded the feedback voltage is missing or not Machines with an Advanced Process Panels correct the current transducer may be faulty do not have a mode select button Use the Before replacing the current transducer check same procedure except hold in the Memory the leads and plugs between the control board button on the advanced process panel instead J8 and the current transducer J90 See The of the mode select button Then rotate the Wiring Diagram For access to plug J90 output knob while still holding the Mode Select M the current trans
15. Or the signal be verified by measuring 12 3 VDC 5V from lead 553A to 554A Lead 553A should be positive Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Press the local remote pushbutton again to turn the gas ESL solenoid off After completing all of the above tests the following will appear on the display Ojo O10 5 5 0 815 218 5 2 a Verify this message appears for approximately 3 sec DIAg PASS onds Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 G 1 ELECTRICAL DIAGRAMS 6 1 2 TABLE OF CONTENTS ELECTRICAL DIAGRAMS SECTION o i ELECTRICAL DIAGRAMS eias vendat dat nta d Rd Ead SECTION G WIRING DIAGRAM G 2 MACHINE G 3 g CONTROL PC BOARD SCHEMATIC 1 s kis ataxia bait G 4 CONTROL PC BOARD SCHEMATIC 2 desine cea G 5 CONTROL BOARD SCHEMATIC 43 2 ars e toe G 6 CONTROL PC BOARD SCHEMATIC 4 33 G 7 CONTROL PC BOARD ASSEMBLY 111088 1 POWER SUPPLY PC BOARD SCHEMATIC e RR e G 8 POWER SUPPLY PC BOARD ASSEMBLY 03632 2 SWITCH PC BOARD SCHEMATIC see G 9
16. ACCESSORIES CONNECTION OF THE LN 25 TO THE V350 PRO ACROSS THE ARC WITH OPTIONAL 6 PIN K857 REMOTE CON TROL 1 Remove input power to the V350 PRO 2 Connect the electrode cable to the output terminal of polarity required by the electrode Connect the work lead to the other terminal Welding cable must be sized for current and duty cycle of the application 3 Connect the K857 remote control to the 6 pin amphenol on the V350 PRO 4 Attach the single lead from the LN 25 control box to the work using the spring clip on the end of the lead This is only a control lead it carries no welding current 5 Set the voltmeter switch to the electrode polarity chosen 6 Set CONTROL SELECT to REMOTE 7 Set the MODE to the CV WIRE position 8 Set WELD TERMINALS SELECT to the ON position A CAUTION If you are using an LN 25 without an internal con tactor the electrode will be HOT when the V350 PRO is energized 9 Set the ARC CONTROL to the O position and then adjust to suit Figure C 2 V350 PRO LN 25 ACROSS THE ARC CONNECTION DIAGRAM WITH K857 REMOTE CONTROL 6 pin Amphenol K857 Remote Control LN 25 Wire Feeder Work Clip Lead To Work Electrode Cable NOTE Illustration shows electrode connected for negative polarity V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC
17. ELECTRICAL SYMBOLS PER 1537 cAP c TORS RESESTERS GENERAL INFORMATION DIODES x3 2 339 33074A 4 ps Aik 11 L1 qe Vos CONVERTER 42 Z9L5VULILAP 58 AT VAEF B LDPDKHZ CHANGE CAP BHZ RAD Vt IM R75 33zK XZ IIIA ROS 1 O PAVER SUPPLY SOURCE POINT gt ZXDK A SUPPLY VOLTABE NET WITHOUT AFFECTING THE INTERCHANGEABILITY OF A GOMPLETE BUARD THES DIGLHAM MAY NOT SHOW THE EXACT COMPONENTS CIRCUZTRY CONT RDLS HAVING CODE SINCE COMPONENTS CIRCUITRY QN A PRINTED CIRCUIT BOARD MAY CHANGE NUMBER NA 57 COMMON CONNECTION FRAME CONNECTION LI1467_10 FILENAME THE LINCOLN ELECTRIC LU AND amp NOT 015511525 OR WETHOUT THE EXPRESS PERMISSION DE THIS SHEET CONTOINS PRUFFTE TORY INFORMATION OWNED BY L EARTH GROUND CONNECTION THE LINCOLN ELECTRIC UNLESS OTHERWESE SPECIFIED TOLERANCE DN HOLES S ZES PEA E 2 n5 ON 2 PLATE DECIMALS 5 B2 UN 3 PLACE DECIMALS
18. Machine Control Shut Down Capacitor DC Input lt 15Volts 100 33W Operation A Undervoltage 8 30 55 VDC Detect lt 30VDC m H 4 Return to Master TOC our Return to Section TOC coi cs 15Volts 250Amps SPI Overvoltage Shutdown 55VDC 1 rj 5Volts 3 Amps SPI 5Volts 100 Amp Un M gt gt g ar 20Volts g 200 Amps T sov Gate Drive 2 p B aa gt 20Volts 200 Amps m 5Volts 100 Amp Gate Drive RS232 O o 5 ols 0 12 2 e 5 3 o
19. 8 15V 5V 6 JL 15V gt 1 SHT 13 9 gt gt 3 pao 4 RS232 RXD 1 22K ES VHCL4D da 014 RS232 TXD ird 18V 0 1 2 3 L 35V 3W 91 x30 01 Si i 50V Bs 50V VHC14D 5 5 un VE VHC140 VHCLUD n GREEN 7 7 10 t gt SHT 134 asv m M v i 5 5VRS232 D 18V D63 5VRS232 3v gt LED2 d T 00 fa m m _fe Ww 5 3 790 50V Bo 5 15 50 a S N yx av 3 V ors232 45 4 ie 15V x16 RI 4 6 6 200 046 5 L4 E MC1454070W 531 62 SV 322 RI33 3 ae 12 01 0012 K 053 X HCPLO6OL HCPLO6OL 18V IS E 15 5 4 10 059 A MC1454070W ais 064 tay A Mc JL lt lt gt SHT 134 685232 V M 052 150pF 18V 1000 1 24 058 4 o O amp LOOK 18V L cas 1 2W O O 9 nj EH SV GRS vue 10 85232 gt 5 V crs232 13 X16 8 Er 66 9 M MC1454070W 10 585232 o z 19 16 4L pae 10 55 1 of Yor VE ces xe MC145407DW 4 pu 55 10 10 2 3 gt SHT 4 16V 18 CASAN 16V GND Vss 7 X16 Jh 2 gt gt gt 012 C62 MC1454070W C92 ied EN 17 04 z 35v 50V 4 5 116 1 gt 55 Leo 695232 V MC1454070W GREEN 2 I EE Vans M M FULL
20. Return to Master TOC Section F 1 TABLE OF CONTENTS TROUBLESHOOTING amp REPAIR SECTION Troubleshooting amp Repair Section 2 4 4 1 Section F How to Use Troubleshooting Guide F 2 PC Board Troubleshooting Procedures and Replacement F 3 Troubleshooting 4 Test Procedures Input Filter Capacitor Discharge F 15 Main Switch Board 17 OST 21 Power F 25 Output Diode Modules 2000224 F 29 Auxiliary Transtormer Test niii eee F 33 Current Transducer Test eene nennen nenne nnns nnne F 37 Fan Control and Motor Ra aen F 41 SPI Cable Resistance and Voltage 45 Voltage and Current Calibration F 47 Replacement Procedures Control Board Removal and 4 51 Display Board Removal and 55 Main Switch Board Removal and
21. TTE 4 5 Advanced Pro ess Panel teer ora aaa B 5 6 Electrode 6 5 Hot Start amp Arc Control essent B 6 Weld Mode Details 7 Pulse 5 ERR B 8 Lower RR B 9 9 9 B 9 Types of Remote Output 2 0 B 9 Types of Remote Weld Terminal B 9 gt Wed 10 p Limitation cm X B 10 5 Recommended es 10 Descriptions of Special Welding Processes Available on this B 11 O O 5 D V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 2 5 tc Return to Section TOC Return to Master TOC Q 52 5 SAFETY PRECAUTIONS A WARNING ELECTRIC SHOCK kill Do not touch electrically live parts or
22. Replace the four screws from around the two welder output terminals on the front of the machine Replace the two case front mounting screws at the bottom of the front of the machine Replace the case wraparound cover Perform the Voltage and Current Calibration Procedure LINCOLN 5 55 55 TROUBLESHOOTING amp REPAIR DISPLAY BOARD REMOVAL AND REPLACEMENT WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual Return to Section TOC Return to Master TOC If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call or 1 800 833 9353 WELD DESCRIPTION The following procedure will aid the technician in removing the display board for maintenance or replacement Return to Section TOC Return to Master TOC MATERIALS NEEDED 5 16 Nut Driver Flathead Screwdriver Phillips Head Screwdriver This procedure takes approximately 30 minutes to perform 5 5 0 815 218 5 2
23. Return to Section Return to Master TOC o 5 90 90 TROUBLESHOOTING amp REPAIR CURRENT TRANSDUCER REMOVAL AND REPLACEMENT continued The back of the machine may now gently be pulled away to gain access to the current trans ducer Note The rear of the machine cannot be removed completely Carefully swing the rear of the machine open to the left while facing the rear of the machine Perform the Snubber Board Removal Remove leads X2 and 20 from the output diode module Remove leads X4 and 40 from the other output diode module 16 17 18 19 20 Using a 3 8 wrench remove the three mounting screws from the output diode heatsink assembly Take note placement of insulation for reassembly See Figure F 42 Cut any necessary cable ties and carefully remove the heavy lead from the diode heatsink using a 1 2 nut driver Remove the output diode heatsink assembly through the rear of the machine Remove plug J90 from the current transducer Using a 3 8 nut driver remove the two mounting nuts from the current transducer FIGURE 42 OUTPUT HEATSINK MOUNTING SCREW LOCATION 3 8 MOUNTING BOLTS V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC olo O
24. TN IS NOT TO BE REPRODUCED DISCLOSED OR USED WITHOUT THE EXPRESS PERMISSION OF LINCOLN ELECTRIC EARTH GROUND CONNECTION C ge Sht No x 8 wes E er d ME THe LINCOLN ELECTRIC CO INVERTER WELDERS 6 2 2000 SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE ON pte E Sr n CLEVELAND OHIO U S A SUBJECT SCHEMATIC DIGITAL CONTROL 5 5 WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD THIS DIAGRAM MAY ON ALL ANGLES 15 5 OF A DEGREE 8 4 2000P 04 SCALE NONE NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY oY SHT 4 T RCUITRY OF CONTROLS HAVING COMMON CODE MATERIAL TOLERANCE Ce TO AGREE DR FM 08 02 2000 chk SUP S D G Ro 3789 100 D NUMBER WITH PUBLISHED STANDARDS 75 NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual LINCOLN ELECTRIC V350 PRO os ELECTRICAL DIAGRAMS Ga SCHEMATIC POWER SUPPLY PRINTED CIRCUIT BOARD Machine Control Power Supply sov 5Volts 750 Amp Return to Section TOC Return to Master TOC 10 55 VDC Operation 15Volts 1750 DC Input wn
25. uumeg 201 uonoes DOL uonoes F 83 bs TROUBLESHOOTING amp REPAIR OUTPUT RECTIFIER MODULES REMOVAL AND REPLACEMENT WARNING Return to Section TOC Return to Master TOC Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION The following procedure will aid the technician in removing the output rectifier modules for maintenance or replacement MATERIALS NEEDED Return to Section TOC Return to Master TOC 3 16 Allen wrench 9 64 Allen wrench 5 16 Nut Driver 7 16 Wrench Flathead Screwdriver Penetrox A 13 Heatsink Compound Thin Knife Screwdriver This procedure takes approximately 30 minutes to perform O10 515 0 gt 218 5 2 a Return to Section Return to Master TOC V350 PRO LINCOLN 5 F 84 F 84 TROUBLESHOOTING amp REPAIR OUTP
26. AMPHENOL 14 PIN 24 42VAC INVERTEC POWER SOURCE LN 25 WITH 6 PIN AMPHENOL OPTION E am K876 ADAPTER K432 REMOTE CONTROL CABLE NOTE Illustration shows electrode connected for positive polarity V350 PRO LINCOLN 5 ACCESSORIES CONNECTION OF THE K867 ADAPTER FOR USE WITH LN 25 WITH K431 OPTION V350 PRO 1 Insulate each unused lead individually 2 Remove 6 pin plug from K432 cable in order to connect 867 adapter Return to Section TOC Return to Master TOC 3 Label each lead A thru F as they are removed from the 6 pin plug 4 Splice leads and insulate olo e Figure 4 Connection of LN 25 to V350 PRO using 867 adapter 5 5 nine o Oleg 15 82 o 81 o ELECTRODE CABLE 7 2 1 LN 25 WITH TO LN 25 S 14 PIN GND o K431 OPTION WORK 24 42VAC 31 b AMPHENOL 32 o 2 4 0 SPARE o D 75 0 o 76 K432 REMOTE K867 ADAPTER 77 C CONTROL CABLE Ojo INVERTEC POWER SOURCE E 2 nS o O 15 815 2 515 ee o O 16 15 2 5 Dlo c V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC Ojo 5 5 0 815 218 5 2 Return to Section Return to Master TOC C 8 C
27. E R63 33A 5 si 2 0 R62 DR 3 9 TZIK HCLLAD 33 Ni gt e R71 D o K TZ EET a HCLAAD AD CS 7 127 MODE LED R72 Ni STUD HOT LED 4001 lt BLOCK 1 vss 4 BLOCK 2 p 28 MODE LED3 EES s 43 MODE LEDA 3 Niz HCLAAD V 44 MODE LEDS 24 QUTPUT_LOCAL xt NVMOSI 12 02 p 25 OUTPUT REM 13 26 STUDS HOT HCL4AD MOD 14 7 STUDS_REMOTE STAL 181 7050 2 6 PIN DETECT ENABLE 19 BLOCKS 06012 14 SOLDRIVE 20 05 06 SOL_PULL_IN2 n x 9 115A 115A EH 60 60 NVCLK 5 7 MODE_SENSE 6 ae 0 GCK2 N XC9572 0 S EN sp Tum 40 o GTS2 L CLOSED VEE MODE LED 3 MODE LED 4 HC14AD MC1413BD MODE LED 5 OUTPUT LOCAL LED Return to Section TOC Return to Master TOC OUTPUT REMOTE LED 36 MODE LEDI STUD REMOTE LED 10 0K 100K 3 0 GSR SOL_PULL_IN 40 9 STATUS STOP SOL_DRIVE 4 2 0282 SOLENOI
28. STATUS m x 4 ODE SENS y 1 i 10V COM MODE 332 MODE SENS gt ud se RIGHT MODE lt 52832 Vag 24 5 sane lt 56 STAT 5 7 S 2 t MC1450510W ct 0022 Lo 504 14 75K O1W gt RMODE POT olo o E 5 ols 0 12 2 e 5 3 LOCAL SWITCH INTERFACE 3159 328 RD 151 TO STATUS 13 way Vise s S 5VREF 4 2222 15V TO MODE lt 12 5 MODE SELECT Sw 13 15V TO STATUS STATUS wiPER MODE SEL S MC1413BD 0510 conn 2 BA RICAL SYMBOLS PER E153 i B gt C 5 MFD 022 50V UNLESS OTHERWISE SPECIFIED RESISTORS Ohms 1 4W UNLESS OTHERWISE SPECIFIED LABELS i DIODES 1A400V UNLESS OTHERWISE SPECIFIED SUPPLY VOLTAGE NET POWER SUPPLY SOURCE POINT GENERAL INFORMATION STUD CONTROL Sw Return to Section TOC Return to Master TOC LINCOLN ELECTRIC OUTPUT DUTPUT
29. O o Fle PEN 218 AE 2 x LABELS GENERAL INFORMATION CE COMPONENTS OR CIRCUITRY ON amp PRINTED A p 77 FRAME CONNECTION RCUIT BOARD CHANGE WITHOUT AFFECTING THE INTERCHANGEABILITY OF COMPLETE BOARD CAPACITORS UNLESS OTHERWISE SPECIFIED POWER SUPPLY SOURCE POINT 1 ME ENEC TION THIS DIAGRAM MAY NOT SHOW THE EXACT COMPONENTS RESISTORS Ohms UNLESS OTHERWISE SPECIFIED OR CIRCUITRY OF CONTROLS HAVING COMMON CODE NUMBER DIODES UNLESS OTHERWISE SPECIFIED COMMON CONNECTION FILENAME S25258 1A UNLESS OTHERWISE SPECIFIED TOLERANCE m HOLES SIZES PER E2056 INFORMATION TYPE V350 LED POT LACE DECIMALS IS 002 BY Sd GLES IS 5 OF A DECREE xm LED POT PCB SCHEMATIC PUBLISHED STANDARDS ED BY E 03 08 01 SCALE REF Return to Section TOC Return to Master TOC NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual LINCOLN V350 PRO cum ELECTRICAL DIAGRAMS 6 16 BOARD ASSEMBLY LED nm PART NO DESCRIPTION C BOARD BLANK INFORMATION FROM 519399 MAKES 18 BOARD SEE BLANK P C BOARD BLANK IPER PANEL SEE ELECTRONIC FILE FORI T15176 LED SPACER ADDITIONAL INFORMATION FO
30. ko G3789 100 NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual LINCOLN ELECTRIC V350 PRO ELECTRICAL DIAGRAMS aS SCHEMATIC DIGITAL CONTROL PC BOARD 2 68LE9
31. RESISTOR SMD METAL FILM 1 10W 2 67K 1 50805 50 54 055 056 57 R74 1 525001 10015 RESISTOR SMD 1K 1 4W 1206 1 TR 3 39 2 52502055 CAPACITOR SMD CERAMIC ZTOOpF 50V 556 XTR S0B05 RISRIGRTTRIS 4 525001 10005 RESISTOR SMD 1000HMS 1 4W 1206 1 TR 40 1 543490483 CAPACITOR ALEL 120M F 50V 203 RT9 R80 2 525000 22115 RESISTOR SMD METAL FILM 1 10W 2 21K 1 S0805 cat 1 525020 175 __ CAPACITOR SMD CERAMIC 0 27MF 50V 10 XR S812 R82 2 1625001 12136 RESISTOR SMD 121K 1 4W 1206 1 TR 42 7 S19490 179 CAPACITOR ALEL 1000 35V 20 R83 R84 R85 R86 4 525000 33215 RESISTOR SMD METAL FILM 1 10W 3 32K 1 S0805 c43 1 ICAPAGIMTOR SMD TANTALUM 22MF 25V 10 S7344 R87 R88 R89 R90 4 525010 35 _ RESISTOR SMD MF 1W 20 0K 1 SURGE 4 245 046 2 S250242 CAPACITOR EMD TANTALUM TOME SOV AH 53528 R91 R92 2 525000 47525 RESISTOR SMD METAL FILM 1 10W 47 5K 1 S0805 47 51 052 53 OSDSSMT CAPACITOR SMD TANTALUM S 2MF 55528 R93 R94 2 525000 20015 RESISTOR SMD METAL FILM 1 0W 2 00K 1 S0805 58 59 260 061 662 5 S25020 2SMT___ CAPACITOR SMD CERAMIC 0 022MF SOV 10 X7R 50805 s RESISTOR SMD METAL FIL STO 374 1 5080 0102030405060708 8 525049 45 DIODE SMD DUAL 200MA 0 5 50 23 SMD LOW 3 TAK 10 3 S25040 T8N T DODE SMD RECOVERY DO HABA R96 1 525000 30115 RESISTOR SMD METAL FILM 1 10W 3 01K 1 S0805
32. lt 3213 3215 MODE PANEL 3215 161 7 lt N B INPUT POWER LINE FILTER IS PRESENT ONLY ON CE MODELS N C ON CE MODELS MOV s ARE IN THE INPUT POWER LINE FILTER N D THE SPI CIRCUIT PIN ASSIGNMENTS ARE SHOWN AT THE CONTROL THIS PIN ASSIGNMENT IS THE SAME FOR ALL THE SPI CONNECTORS ADVANCED PROCESS PANEL 00000900000 o NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual ELECTRICAL SYMBOLS PER E1537 G4093 V350 PRO ELECTRICAL DIAGRAMS os SCHEMATIC DIGITAL CONTROL PC BOARD 1
33. 8 8 ojo 9 olo e O NEGATIVE POSITIVE OUTPUT OUTPUT 09129 TERMINAL TERMINAL ols oz 9 8 TEST PROCEDURE 8 5 1 Remove input power to the V350 PRO 4 Using the analog ohmmeter test for more ojo than 200 ohms resistance between positive Return to Section TOC Return to Master TOC 2 Locate the output terminals on the front panel of the machine See Figure F 5 Remove any output cables and load from the output terminals and negative output terminals Positive test lead to the positive terminal Negative test lead to the negative terminal NOTE The polarity of the test leads is most important If the test leads polarity is not cor rect the test will have erroneous results V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o E 5 B Return to Section Return to Master TOC o 52 5 31 TROUBLESHOOTING amp REPAIR OUTPUT DIODE MODULES TEST continued Figure F 6 Terminal Probes If 200 ohms is measured then the output diodes are not shorted NOTE There is a 250 ohm resistor across the welding output terminals If less than 200 ohms is measured one or more diodes or the snubber board may be faulty Perform the Filter Capacitor Discha
34. gt J332 2 gt 3202 gt 4332 1 gt 3201 1805 V gt 9332 3 3316 3315 3313 3312 V E 276 275 277 3305 3304 gt J333 3 3303 3313 4608 1 MN 3316 3314 12085 3305 m 3303 k xol 15 15 3315 amo aie 3942 pora ES 5 3304 4 5 21 qT WELD TERMINALS 761 OUTPUT CONTROL J3 4 lt 15 VOLT SPI 132 5 VOLT SPI 433 c ISS 134 lt 51 43 5 CS2 136 lt CS3 THERMAL 437 lt MISO VOLTS prep DISPLAY PANEL 439 lt MOSI 4340 lt GROUND SPI J60 A J60 B J2 45 11 J22 J41 J311 P55 d 2 J9 42 P53 1 3 559 4 6 J8 J20 J21 1 4 6005 b ooo 5 8 4 J43 J331 1 6 55955 lo T CONNECTOR CAVITY NUMBERING SEQUENCE VIEWED FROM COMPONENT SIDE OF BOARD LEGEND ALL MACHINES OPTION COMPONENT OUTLINE NOTES N A PC BOARD COMPONENTS SHOWN FOR REFERENCE ONLY ALL COMPONENTS ARE NOT SHOWN 3212 24 9207 93 3206 1802 15V 3204 02 ay 9 gy ai HOV CONTROL 3201 pud av 3213 lt 0615 ue m p 261 15
35. 2 9 Safety A 3 PAULING A 3 Input Grounding A 3 Power Cord 3 Connection Of Wire Feeders m n n c i n S A 3 A 4 Cobramatic Connection A 4 Parallel E A 5 Return to Master TOC Q 7 5 Return to Master TOC V350 PRO LINCOLN 5 2 INSTALLATION A 2 TECHNICAL SPECIFICATIONS INVERTEC V350 PRO INPUT AC VOLTAGE amp DC OUTPUT Rated DC Output Weight Dimensions Open Amps Volt g with Cord HxWxD Circuit Duty Cycle 1 Voltage Construction 81 0 Ibs 350A 34V 60 36 7 kg 14 8 x 13 3 x 208 230 27 8 380 400 Factory 373 x 338 x 415 460 81 0 Ibs 706 mm 575 300A 32V 100 36 7 kg Return to Section TOC Return to Master TOC Process 60 50 Hz Advanced Process 81 5 lbs 37 0 kg Overall Length Including Handle 27 8 706mm V350 PRO INPUT CURRENT Recommemded Fuse Sizes Base On The U S National Electrical Code And Maximum Machin
36. 5 B tc Return to Section TOC Return to Master TOC Q 7 5 TROUBLESHOOTING amp REPAIR INPUT FILTER CAPACITOR DISCHARGE PROCEDURE WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION This procedure will drain off any charge stored in the four large capacitors that are part of the switch board assembly This procedure MUST be performed as a safety pre caution before conducting any test or repair procedure that requires you to touch inter nal components of the machine MATERIALS NEEDED 5 16 Nut Driver Insulated Pliers Insulated Gloves High Wattage Resistor 25 1000 ohms and 25 watts minimum DC Volt Meter This procedure takes approximately 20 minutes to perform V350 PRO LINCOLN 5 F 15 Return to Section Return to Master TOC Return to Section TOC Return t
37. CONTROL BOARD J6 9 15V J6 2 MAIN RELAY CONTROL J6 16 VOLTAGE FREQUENCY CONVERTER 1 J6 8 VOLTAGE FREQUENCY CONVERTER 1 SNUBBER J10A 1 PRIMARY CURRENT SENSE 1 J10A 2 lt PRIMARY CURRENT SENSE 1 MAIN TRANSFORMER 21 3 gt 610 484 CURRENT FEEDBACK 4V 500A 18 2 15V 15V lt J90 1 15V J90 2 H J8 4 15V J8 6 CONTROL BOARD COMMON GND J90 4 al CURRENT TRANSDUCER J9 1 STUD VOLTAGE SENSE J9 3 2 STUD VOLTAGE SENSE THERMOSTAT THERMOSTAT 605 J6 5 VOLTAGE FREQUENCY CONVERTER 2 VOLTAGE FREQUENCY CONVERTER 2 610 J6 10 1010 J10B 1 PRIMARY CURRENT SENSE 2 R 1020 J10B 2 a m 3 a J20 1 o PRIMARY CURRENT SENSE 2 611 36 11 GND a 612 J6 12 SOFT START CONTROL 615 t J6 15 PULSE TRANSFORMER GATE DRIVE 607 J6 7 PULSE TRANSFORMER GATE DRIVE 715 J7 5 15 a 716 J7 16 FAN CONTROL 952 11 nsv 3 COMI 24V L 582 J52 1 1 42 4525 POWER POWER DOWN SIGNAL gt 42 4 BOARD MACHINE 758 gt 21 CONTROL 5 8 POWER GND SUPPLY J41 2 SPI 40VDC POWER
38. Return to Master TOC Q 7 5 Return to Master SAFETY PRECAUTIONS DE SURETE Pour votre propre protection lire et observer toutes les instructions et les pr cautions de s ret specifiques qui parraissent dans manuel aussi bien que les pr cautions de s ret g n rales suiv antes S ret Pour Soudage A L Arc 1 Protegez vous contre la secousse lectrique a Les circuits l lectrode et la pi ce sont sous tension quand la machine souder est en marche Eviter toujours tout contact entre les parties sous tension et la peau nue ou les v tements mouill s Porter des gants secs et sans trous pour isoler les mains Faire tr s attention de bien s isoler de la masse quand on soude dans des endroits humides ou sur un plancher met allique ou des grilles metalliques principalement dans les positions assis ou couch pour lesquelles une grande partie du corps peut tre en contact avec la masse Maintenir le porte lectrode la pince de masse le c ble de soudage et la machine souder en bon et s r tat defonc tionnement d Ne jamais plonger le porte lectrode dans l eau pour le refroidir Ne jamais toucher simultan ment les parties sous tension des porte lectrodes connect s deux machines souder parce que la tension entre les deux pinces peut tre le total de la tension vide des deux machines Si on utilise la mac
39. 042 ON ALL ANGLES 15 5 OF AOEGAEL THE LINCOLN ELECTRIC Cd SWITCH PCB SCHEMATIC SUBJECT CLEVELAND OHIO U S A 05 72 00 DATE WITH PUBLICHED STAND AROS MATERIAL TOLERANEE 25 AGREE 0022 3 NOTE This diagram is for reference only It may not accurate for all machines covered by this manual EN 168 G 9 V350 PRO 0 10 ELECTRICAL DIAGRAMS G 10 PC BOARD ASSEMBLY SWITCH PART NO DESCRIPTION 1 23 520500 4 CAPACITOR PPMF 0047 1000V BOX C2 C24 520500 7 CAPACITOR PPMF 047 1600V BOX 10 C3 C18 513490 93 CAPACITOR TAEL 27 35V 10 4 21 520500 1 0 1 1000 10 80 C5 C6 C15 C16 516668 6 CAPACITOR CEMO 4700 50V 10 C7 C12 C13 C14 C20 C27 C28 516668 5 CAPACITOR CEMO 022 50 20 C29 C8 C9 C22 516668 9 CAPACITOR CEMO 150p 100 5 C10 C11 513490 85 CAPACITOR 027 50 5 C25 C26 T11577 57 CAPACITOR PEF 0 1 400V 10 31 32 516668 7 0 820 50 5 CR1 CR2 514293 18 RELAY DPST 12VDC AG CDO D1 D4 D16 D17 T12705 59 DIODE AXLDS 600V UFR 07 08 09 012 014 018 019 T12199 1 DIODE AXLDS 400V 020 021 071 072 073 075 076 0715 T12702 29 ZENER DIODE 1W 15V 5 1N4744A DZ16 DZ18 DZ19 DZ23 074 077 0717 0720 T12702 40 ZENER DIODE 1W 6 2V 5 1N4735A 07
40. 1001 1010 J10A 361 699540 _DISPLAY Pin 3 lead 31B a 31C Pin 2 lead 32A 532A PRIMARY RECONNECT SPI FLEX CIRCUIT rTronmuzoo 20 Return to Section Return to Master TOC 4 zi MAIN 380 575 POSITION AUXILIARY TRANSFORMER 4 L2 me TRANSFORMER m s BRIDGE L Ten SPI FLEX CIRCUIT N C 4 H 152462 00 be REAR OF MACHINE H2200 i 4 Model will not contain leads 31 082 WIRE FEEDER REMOTE 15V 08V H CONTROL RECTIFIER 7 x em construction REMOTE S 2 H5 7 ea OUTPUT 06 32 EPA CB1 s CB2 35 668 9 SPI FLEX CIRCUIT 541 532 T T5A 3 i 5 NE m 5 5 9 75 GAS 8 SOLENOID X x 405 406 401 4124111408 66 65 403 402 IN PARENTHESIS 1 21 COLORS FOR O OO MACHINES COLOR CODE y o 6 O 0 O0 i em BLACK G GREEN J42 POWER R RED puo M POWER W WHITE U BLUE N BROWN Y YELLOW 25 CURRENT FRONT VIEW O
41. 160 LED BANK 2 3 SWITCH Lc O o Fle PEN 218 AE 2 x LABELS GENERAL INFORMATION SINCE COMPONENTS OR CIRCUITRY ON PRINTED A SUPPLY VOLTAGE NET fT FRAME CONNECTION CIRCUIT BOARD MAY CHANGE WITHOUT AFFECTING ELECTRICAL SYMBOLS PER E1937 THE INTERCHANGEABILITY OF COMPLETE BOARD CAPACITORS UNLESS OTHERWISE SPECIFIED SUPPLY SOURCE POINT L EARTH GROUND CONNECTION THIS DIAGRAM MAY NOT SHOW THE EXACT COMPONENTS RESISTORS 0 UNLESS OTHERWISE SPECIFIED OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE NUMBER DIODES UNLESS OTHERWISE SPECIFIED COMMON CONNECTION ENAME 525259 1B AMEN IER ec eee nee E 5 INFORMATION EQUIPMENT 350 LED SELECT i ON 2 PLACE DECIMALS IS 02 MATERIAL TOLERANCE TO AGREE REN SUBJECT SCHEMATIC PC BOARD pn WITH PUBLISHED STANDARDS E E 01 17 02 SCALE 525259 1 SCALE THIS DRAWING NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual LINCOLN V350 PRO Return to Section TOC Return to Master TOC Sn ELECTRICAL DIAGRAMS 614 BOARD ASSEMBLY LED SELECT neomuaron FROM 519399 MAKES 63 BOARD 1 SEE BLANK P
42. 288 66 89232 POWER SUPPLY 15 42 2 5 SPI b gt 43 3 15 SPI b 543 6 SUPPLY SPI GND b J43 12 5RS232 54434 SUPPLY GND e gt 3 9 20 5243 8 CHOPPER GND c 2443 2 20 d 443 7 GND d 5J43 1 242 3 gt J42 5 407 44 7 POWERDOWN SIGNAL HIGH RUN 412 J4 12 5V a 408 48 lt 45V a 410 J4 10 lt GND a 41 J4 11 15 403 4 3 lt 5V SPI b 402 J4 2 15V SPI b 1 SPI b 406 446 51 85232 SPI CIRCUIT SPI CIRCUIT 405 5 lt GND e SPI CIRCUIT 9 gt 24331 10 gt 14 PIN S 76 LEAD gt 9331 IS LEAD gt J33 6 PIN S 76 LEAD gt J33 2 LEAD gt J331 11 SOLENOID COIL TT LEAD 14 PIN S 4 LEAD gt J33 6 PIN S 4 LEAD SOLENOID COIL gt J331 8 gt WIRE FEEDER REMOTE AMPHENOLS ARE VIEWED FROM FRONT OF MACHINE 554 GAS SOLENOID 553 graphical representation of potentiometer connection REMOTE BOARD 22333 16 gt 22333 15 gt 22333 14 22333 13 21333 12 gt J333 8 gt gt 0333 7 gt 13336 gt J333 5 gt gt J3334 gt gt J333 2 gt J333 1 2 gt J332 16 24332 15 24332 14 24332 13 24332 12 27332 11 gt J332 7 gt 13326 gt J332 5 gt J332 4 3204 3203
43. 7 Using a phillips head screwdriver remove the four screws from around the two welder output termi nals on the front of the machine See Figure F 30 8 9 The front of the machine may now gently be pulled forward to gain access to the remote Board Note The front of the machine cannot be removed completely only pulled forward a few inches The remote board is now accessible to replace FIGURE F 30 FRONT SCREW REMOVAL 5 WELD TERMINALS SELECT AMPs 5 CONTROL REMOTE REMOTE LOCAL Gp OUTPUT ON SELECT ADJUST ATTRIBUTE AA Phillips Head 0 Screws gt 6 m Flathead Screws qb CD 5 16 Screws V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC Q o E 5 Return to Section Return to Master TOC o 5 F 72 10 11 12 13 14 15 16 F 72 TROUBLESHOOTING amp REPAIR REMOTE BOARD REMOVAL AND REPLACEMENT continued Remove plug J37 from the display board See Wiring Diagram Remove plugs J33 J333 and J331 from the remot
44. Check the voltage across the terminals of all capacitors with a DC voltmeter Polarity of the capacitor terminals is marked on the PC board above the terminals Voltage should be zero any voltage remains repeat this capacitor dis charge procedure FIGURE F 1 LOCATION OF INPUT FILTER CAPACITOR TERMINALS EIGHT CAPACITOR TERMINALS INSULATED PLIERS POWER INSULATED RESISTOR Sh GLOVES V350 PRO LINCOLN 5 17 17 TROUBLESHOOTING amp REPAIR MAIN SWITCH BOARD TEST WARNING Return to Section TOC Return to Master TOC Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION This test will help determine if the power section of the switch boards are functioning cor rectly This test will NOT indicate if the entire PC board is functional This resistance test is prefer
45. INVERTEL 350 For use with machine code numbers 10873 10874 10876 Return to Master TOC View Safety Info Safety Depends on You 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 INSTALL OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READ ING THIS MANUAL AND THE SAFETY PRECAUTIONS CON TAINED THROUGHOUT And most importantly think before you act and be careful Return to Master TOC View Safety Info dB 915 21 gjo 9 al SERVICE MANUAL View Safety Info LINCOLN Copyright 2002 Lincoln Global Inc World s Leader in Welding and Cutting Products Sales and Service through Subsidiaries and Distributors Worldwide Cleveland Ohio 44117 1199 U S A TEL 216 481 8100 FAX 216 486 1751 WEB SITE www lincolnelectric com Return to Master TOC WARNING Return to Master TOC Return to Master TOC Q 7 5 Return to Master TOC A CALIFORNIA PROPOSITION 65 WARNINGS A Diesel engine exhaust and some of its constituents are known to the State of California to cause can cer birth defects and other reproductive harm The engine exhaust from this product contains chemicals known to the State of California to ca
46. Power switch Main transformer Input rectifier Auxiliary Transformer Reconnect Switch Area Fan Blow air through the rear louvers 2 Examine the sheet metal case for dents or breakage Repair the case as required Keep the case in good condition to insure that high voltage parts are protected and correct spacings are maintained All external sheet metal screws must be in place to insure case strength and electrical ground continuity PERIODIC MAINTENANCE Overload Protection The machine is electrically protected from producing high output currents Should the output current exceed 430A an electronic protection circuit will reduce the current to approximately 100A The machine will continue to produce this low current until the protection circuit is reset Reset occurs when the output load is removed Thermal Protection Thermostats protect the machine from excessive operating temperatures Excessive temperatures may be caused by a lack of cooling air or operating the machine beyond the duty cycle and output rating If excessive operating temperature should occur the thermostat will prevent output voltage or current The meter will remain energized during this time Thermostats are self resetting once the machine cools sufficiently If the thermostat shutdown was caused by excessive output or duty cycle and the fan is operating normally the Power Switch may be left on and the reset should occur within a 15 minute
47. Replace the case wraparound cover FIGURE F 39 OUTPUT RECTIFIER MODULE MOUNTING BOLT LOCATIONS Mounting 40 20 Bolts Bolts 4 X2 Bolts Mounting Bolts V350 PRO LINCOLN 5 F 86 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 86 201 uonoes DOL uonoes uumeg 201 uonoes DOL uonoes 87 87 TROUBLESHOOTING amp REPAIR CURRENT TRANSDUCER REMOVAL AND REPLACEMENT WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual Return to Section TOC Return to Master TOC If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION The following procedure will aid the technician in removing the current transducer for maintenance or replacement MATERIALS N
48. a Return to Section Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC olo OJO 5 5 0 815 218 5 2 a Return to Section Return to Master TOC F 56 F 56 TROUBLESHOOTING amp REPAIR DISPLAY BOARD REMOVAL amp REPLACEMENT continued FIGURE F 20 DISPLAY BOARD LOCATION Display Board Mode Board or Advanced Process Board PROCEDURE 3 Perform the Filter Capacitor 1 Remove input power to the V850 PRO Discharge Procedure detailed earlier in this section 2 Using a 5 16 nut driver remove the case wraparound cover 4 Locate the display board behind the front panel of the machine See Figure F 20 V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC o 5 B tc Return to Section TOC Return to Master TOC o 5 57 57 TROUBLESHOOTING amp REPAIR DISPLAY BOARD REMOVAL amp REPLACEMENT continued FIGURE F 21 CASE FRONT SCREW LOCATION Amps CONTROL WELD TERMINALS REMOTE REMOTE LOCAL OUTPUT ON SELECT SELECT L PIC O LL OI i US
49. cause injury or death Always use enough ventilation especially in confined areas to insure breathing air is safe Read and understand the manufacturer s instructions for this equipment and the consumables to be used including the material safety data sheet MSDS and follow your employer s safety practices MSDS forms are available from your welding distributor or from the manufacturer Mar 95 Return to Master Return to Master TOC Q 7 5 Return to Master TOC ES WELDING SPARKS can gt cause fire or explosion 6 a Remove fire hazards from the welding area If this is not possible cover them to prevent the welding sparks from starting a fire Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas Avoid welding near hydraulic lines Have a fire extinguisher readily available Where compressed gases are to be used at the job site special precautions should be used to prevent hazardous situations Refer to Safety in Welding and Cutting ANSI Standard Z49 1 and the operating information for the equipment being used When not welding make certain no part of the electrode circuit is touching the work or ground Accidental contact can cause overheating and create a fire hazard Do not heat cut or weld tanks drums or containers until the proper steps have
50. 045 052 Argon Blends Stainless Steel 030 035 045 Argon Blends amp Helium Argon Blends Aluminum 035 3 64 1 16 4043 amp 5356 Metal Core 045 052 Argon Blends Nickel 035 045 Argon Helium blends Refer to the detailed explanation at the end of this section ADVANCED PROCESS PANEL VERSION FIGURE B 2 p KNOB 1 CONTROL Toca LOCAL ourrur ON SELECT VoLrs WELD TERMINALS REMOTE SELECT MEMORY SELECT SELECT ADJUST 13262 CX eig MEMORY BUTTON M1 THRU 8 SELECT KNOB SCOLLS WELDING PROCESSES ADJUST KNOB 0 THRU 10 HOT START 10 THRU 0 AND 0 THRU 10 ARC CONTROL SELECT BUTTON HOT START OR ARC CONTROL V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 B tc Return to Section TOC Return to Master TOC Q 5 6 6 OPERATION CONTROLS The MEMORY button and SELECT knob are used together to select a welding process and store it in memory M1 thru M8 The SELECT knob scrolls through the welding process modes and memory M1 thru M8 The MEMORY button stores the welding pro
51. 10 with double the preset cur rent or 425 amps max of machine added for the first second after arc initiation The Arc Control regulates the Arc Force to adjust the short circuit current The minimum setting 10 will produce a soft arc and will produce minimal spatter The maximum setting 410 will produce a crisp arc and will minimize electrode sticking CC STICK CRISP The Stick Crisp mode features con tinuous control from 5 to 425 amps This mode was intended primarily for pipe welding applications The Hot Start control regulates the starting current at arc initiation Hot Start can adjust starting current up or down by 2596 of the preset value The recom mended setting for Hot Start is 5 where the initial cur rent is equal to the preset current Hidden Middle Control Panel Mode Panel FIGURE B 1 V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC O10 5 5 0 815 218 5 2 a Return to Section Return to Master TOC Return to Master TOC d OPERATION The Arc Control regulates the Arc Force to adjust the short circuit current The minimum setting 10 will produce a soft arc and will produce minimal spat ter The maximum setting 10 will produce a crisp arc and will minimize
52. AMPHENOL 115VAC AT REAR OF MACHINE 6 PIN AMPHENOL V350 PRO TO WORK K480 CONTROL CABLE TO LN 7 INPUT CABLE PLUG OPTIONAL K857 REMOTE CONTROL ELECTRODE CABLE TO WIRE FEED UNIT LINCOLN 5 ACCESSORIES CONNECTION OF THE K867 ADAPTER FOR USE WITH THE K291 OR K404 INPUT CABLES AND LN 7 1 Insulate each unused lead individually 2 Splice leads and insulate Return to Section TOC Return to Master TOC Figure C 6 Connection of LN 7 to V350 PRO using K867 adapter 82 o LN 7 81 o 91 CONTROL BOX ELECTRODE CABLE TO LN 7 TO WORK 14 PIN 115VAC AMPHENOL Return to Section TOC Return to Master TOC 32 o 32 2 o 2 291 404 ep K867 UNIVERSAL ADAPTER PLUG GND GND INPUT CABLE GREEN INVERTEC 75 R 75 POWER SOURCE 76 o 76 7 0 77 K775 OPTIONAL 2 REMOTE CONTROL 55 PEN 8 gt 2 5 5 55 PEN 8 2 2 cle 3 z o c V350 PRO LINCOLN 5 10 10 ACCESSORIES CONNECTION OF THE LN 742 TO THE 3 Connect the K591 control cable to the 24 42VAC V350 PRO SEE FIGURE C 7 14 pin amphenol on the back of the V350 PRO NOTE AN LN 7 CAN ONLY BE USED WITH A FAC PING OR MSE Nae TORY OR CE VERSION OF THE V350 PRO 4 Set the VOLTMETER switch to or depending on the polarity chosen 1
53. C1 1 FOR ITEMS BELOW REFER TO ELECTRONIC COMPONENTS DATABASE FOR COMPONENT SPECIFICATIONS 525024 75 CAPACITOR SMD TANTALUM 47 20V 10 57343 C2 C3 C4 C5 C11 C12 C19 C20 8 525020 35 CAPACITOR SMD CERAMIC 0 1ME 50V 10 7 50805 DISP1 DISP2 DISP3 DISP4 DISP5 DISP6 DISP7 DISP8 137 517395 6 518248 10 LED DISPLAY 7 SEGMENT CC BRIGHT CONNECTOR MOLEX MINI PCB 10 PIN LED1 LED2 LED3 LED4 T13657 6 LED T 1 RED HLMP K101 LED 5 LED6 LED7 T13657 12 LED T 1 3 4 YELLOW HIGH INTENSITY R6 R16 25000 1501SMT RESISTOR SMD METAL FILM 1 10W 1 50K 1 50805 9 R10 R11 R12 R13 R14 R20 525000 12125 525000 26705 RESISTOR SMD METAL FILM 1 10W 12 1K 1 50805 RESISTOR SMD METAL FILM 1 10W 2670HMS 1 50805 R21 R25 R26 R28 R29 525000 10015 RESISTOR SMD METAL FILM 1 10W 1 00K 1 50805 R22 R23 R24 25000 10ROSMT 25000 4751SMT RESISTOR SMD METAL FILM 1 10W 10 00HMS 1 50805 RESISTOR SMD METAL FILM 1 10W 4 75K 1 50805 R27 4 525000 47525 517900 85 RESISTOR SMD METAL FILM 1 10W 47 5 1 50805 IC SMD CMOS INVERTER SCHMITT HEX HC14A SS X2 517900 265 CMOS SMD MUX DAT 8 151 SS 4 517900 285 517900 105 SMD CMOS INVERTING BUFFER 3 ST SS
54. IC SMD CMOS REGISTER 5 S PI SO 8 BIT SS 5 X6 X7 a gt ro 520496 15 SMD CMOS DRIVER DISPLAY LED CC MCU 21 SPI DISPLAY L11130 3 LED1 DISPZ DISP3 LED DISP7 DISPS 1 0 nc 19 aba rs UNLESS OTHERWISE SPECIFIED Q CAPACITORS MFD VOLTS NOTE GROUND SIDE 5 INDUCTANCE HENRIES RESISTANCE OHMS ENCAPSULATE WITH HUMISEAL 1A27LU PER E1844 OR WITH EQUIVALENT AS APPROVED BY LINCOLN ELECTRIC COMPANY 2 COATS NOTES N A DO NOT COAT WITH ENCAPSULATION MATERIAL CAUTION DEVICE 15 SUBJECT TO DAMAGE BY STATIC ELECTRICITY SEE E2454 BEFORE HANDLING N C USE ITEM 3 TO STAND LED1 LED2 LED3 AND LED4 FROM THE P C BOARD THERE MUST NOT BE MORE THAN 020 GAP BETWEEN SPACER AND P C BOARD OR BETWEEN SPACER AND LED ENCAPSULATE P C BOARD SPACER AND LOWER HALF OF LED N D DISP 1 THRU DISP 8 MUST ALWAYS BE MATCHED BY VENDOR NAME DO NOT MIX DIFFERENT VENDORS ON THE SAME BOARD ASSEMBLY CONNECTOR MUST BE GREASED WITH ITEM 4 PRIOR TO ENCAPSULATION L11130 3D0 PART NO IDENTIFICATION CODE BUY PER E3867 TEST PER E3856 D THIS SH
55. PSWI0 7 a 1203 DSP AGI E EE 100K 9 42 RESERVED XTAL2 57 05 01 1904 15 05 1 706 ET DSP 0151 1605 As 116 DSP AI 812888 TMS320F240 z miim lel zie 8 vo 138 Hee DSP AUGI DM E E E 96 1 0138 557 05 0071 1807 DSP AUI 3 hook 1 097 1 0137 DSP x22 x lg m PSWIZI 98 136 1908 asl x x 1 098 1 0136 05 019 5 5 5 5 5 8 as 2209 TMS320F240 9 122 ele 318 a 3 3 8 3 S m 1 099 1 0135 05 0101 29 10 10 123 100170100 170134 134 24 ras DSP ADD 15 si SHT 3 MSELEN 101 70101 13 Du Aul olo 1 010 1 0133 05 0021 28 125 PSWIOI TUI 107 170107 170132 132 02 AE an fl 05 0131 24 126 OSP_AI13 o 109 129 AD_DATAIL3I 013 019 1 0129 05 0141 21 127 05 2 15 110 128 121 014 1 EE n 1 0110 1 0128 05 0151 2 128 05 TPUDI 12 127 015058 15 58 128 DSP AUSI o C Apu 1 0127 SHT 1 5 55 1 1551 113 1 0113 1 0126 126 DSP DI111 Vip 9 PSWI3I 1 0125 125 05 0121 4 6 115 124 05 _01131 10124 c o PSWIAI SHT 171 FUNCEN 116 016 1 0123 123 05 0151 5 jeu 117 0117 1001221222 DSP D 14 5 2 0102 4 2E 0103 d 2L 010 1 2
56. Repeat the above two steps if necessary Press and release the Mode Select Memory button to save the calibration NOTE If the Mode Select Memory button is not pressed within 30 seconds after adjusting the Output Control knob the machine will leave the calibration mode and use the previous cal ibration settings LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Q o E 5 Return to Section Return to Master TOC o 5 49 TROUBLESHOOTING AND REPAIR VOLTAGE AND CURRENT CALIBRATION PROCEDURE continued CURRENT CALIBRATION PROCEDURE 1 Connect the resistive load band approxi mately 087 ohms and test ammeter to the welding output terminals Press and hold in the Mode Select Memory button Turn on the V350 PRO Rotate the Output Control knob until the display reads cur CAL Release the Mode Select Memory button The left display will change to IcAL to indicate that current calibration is progress The right display will scroll the following message Adj oCP SorEAL cur 300A Adjust the Output Control knob until the actual output current reading on the test ammeter is 300amps 2A Wait for the machines output to be automatically turned off and then back on V350 PRO 10 11 12 13 14 15 Adjust
57. SW CONTROL 5 Ch ge Sht No 1 25 2002 THE LINCOLN ELECTRI EVELAND OHIO U SCALE NONE A pate 01 10 02 57 common CONNECTION EQUIP TYPE 777 FRAME CONNECTION Z EARTH GROUND CONNECTION COMMON CONTROLS SUBJECT SPI REMOTE UI PCB SCHEMATIC CHK SUPS D6 587 4017 1C0 1 NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual V350 PRO Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 9 2 3 Return to Section Return to Master TOC O O o 9 2 6 18 BOARD ASSEMBLY SPI REMOTE ELECTRICAL DIAGRAMS ITEM REQ D PART DESCRIPTION R1 R2 R3 R4 R5 R6 6 525000 12125 RESISTOR SMD M
58. SWITCH PC BOARD ASSEMBLY cote i OP Lade diat oe G 10 DISPLAY PC BOARD SCHEMATIC G 11 5 DISPLAY PC BOARD ASSEMBLY tu eo dote ata G 12 LED SELECT BOARD SCHEMATIC 9 13 8 LED SELECT BOARD ASSEMBLY 5 32 sudden dit a edente d ela daba G 14 LED POTENTIOMETER PC BOARD SCHEMATIC G 15 LED POTENTIOMETER PC BOARD ASSEMBLY ich hehe n een G 16 5 SPI REMOTE PC BOARD SCHEMATIC dicite 3 G 17 5 SPI REMOTE PC BOARD ASSEMBLY 35 24 il Ae e oni G 18 9 SNUBBER BOARD SCHEMATIC c m pas ver G 19 SNUBBER BOARD ASSEMBLY G 20 NOTE Many PC Board Assemblies are now totally encapsulated and are therefore considered to be unservice able The Assembly numbers are provided on this page but the actual drawings are no longer included Q 7 5 Return to Master TOC V350 PRO LINCOLN 5 6 2 ELECTRICAL DIAGRAMS me WIRING DIAGRAM INVERTEC V350 PRO WIRING DIAGRAM INVERTEC V350 RIGHT SIDE OF MACHINE Return to Section TOC Return to Master TOC NOTE i IF ADVANCED PROCESS PANEL IS NOT INSTALLED 1002 1020 SPI FLEX CIRCUIT IS PLUGGED INTO J33
59. When the reconnect switch is in the lower voltage position the capacitor pairs are in parallel Thus two series capacitors in parallel with two series capacitors When the reconnect switch is in the high voltage posi tion the two capacitor pairs are in series Thus four capacitors in series This is required to accommodate the higher input voltages When the input capacitors are fully charged they act as power supplies for the IGBT switching circuits When welding output is required the Insulated Gate Bipolar Transistors switch the DC power from the input capacitors on and off thus supplying a pulsed DC current to the main transformer primary windings See IGBT Operation Discussion and Diagrams in this section Each IGBT switching circuit feeds current to a separate oppositely wound primary winding in the Optional Solenoid main transformer The reverse directions of current flow through the main transformer primaries and the offset timing of the IGBT switching circuits induce an AC square wave output signal at the secondary of the main transformer The two current transformers CT located on the switch board monitor these primary currents If the primary currents become abnormally high the control board will shut off the IGBTs thus dis abling the machine output The DC current flow through each primary winding is clamped back to each respective input capacitor when the IGBTs are turned off This is needed due
60. electrode with skin or wet clothing Insulate yourself from work and ground Always wear dry insulating gloves FUMES AND GASES can be dangerous Keep your head out of fumes 40 Use ventilation or exhaust to remove fumes from breathing zone WELDING SPARKS can cause fire or explosion Keep flammable material away Do not weld on closed containers ARC RAYS can burn eyes and skin Wear eye ear and body protection EZ See additional warning information at front of this operators manual GENERAL DESCRIPTION The Invertec V350 Pro offers multi process CV CC and DC welding and is rated 350 amps 34 volts at a 6096 duty cycle The V350 Pro is available in either a Construction version no wire feeder connection and auxiliary power and a Factory amp Advanced Process versions includes wire feeder connection and related power factory model is the construction model with the addition of the Wire Feeder Remote Adapter this form the V350 Pro provides the hardware to power and connect to 24 42 or 115 VAC wire feeders advanced process model is the factory model with an advanced process panel installed in place of the standard mode panel In this form the V350 Pro provides access to the 5 standard weld modes Stick Soft Stick Crisp TIG CV Wire CV Innershield gouge constant power and pulse MIG weld modes E OPERATION DUTY CYCLE The V350 Pro is r
61. listen for the traditional frying egg sound of a good short arc MIG procedure to know you have the process set correctly For aluminum simply adjust the Output knob until the desired arc length is obtained Note the Volts display is simply a relative number and DOES NOT correspond to voltage Some procedure recommendations appear in the table below Recommended Welding Procedures for Power Mode Mild Steel Mild Steel MATERIAL Aluminum 4043 Aluminum 5356 Mild Steel Stainless Steel Stainless Steel WIRE L56 75 25 100 0 8 E4043 E5356 L56 025 WIRE SIZE 0 035 0 035 0 100 Ar 100 Ar 100 CO2 22 ga 125 2 25 125 1 75 Not Recommended 20 ga 150 2 5 150 2 3 120 1 0 120 1 0 L56 100 CO2 Not Recommended 100 0 7 75 2595 100 COz 75 25 Tri mix Tri mix LL E 100 1 0 80 1 5 50 0 5 Mild Steel Mild Steel Mild Steel L56 L56 L56 E308L E308L o 18 200 3 75 200 3 0 140 17 140 15 110 15 110 1 5 100 2 5 100 2 5 110 2 0 110 2 0 5 16 300 7 75 300 6 85 190 2 0 190 2 0 125 2 0 125 2 0 125 3 0 125 3 0 140 2 5 130 2 7 14 ga 400 9 0 400 7 5 260 3 0 260 3 0 160 3 5 210 30 190 3 5 om S E Return to Section V350 PRO LINCOLN 5 Return to Section
62. 038 042 060 A Us 08 Hes 475 FILENAME 63789 10 7 FRAME CONNECTION gt Z 51 V siv 51V A 5iv 4 ES THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY THE LINCOLN ELECTRIC lt DAANG CONNEETIUR o Daw Dw 1 24 Vow xs 00 AND IS NOT BE REPRODUCED DISCLOSED OR USED WITHOUT THE EXPRESS PERMISSION OF THE LINCOLN ELECTRIC in URN OFF N AN 3 SHT 4 9 9 sly veal More UNLESS OTHERWISE SPECIFIED TOLERANCE 07956 THE LINCOLN ELECTRIC EQUIP INVERTER WELDERS v H HOLES SIZES 2056 EU aie 6 2 2000 5 SINCE COMPONENTS OR CIRCUITRY ON PRINTED CIRCUIT BOARD MAY CHANGE ON 3 PLACE DECIMALS 18 2 002 8 4 2000P CLEVELAND ORTO Urs suasect SCHEMATIC DIGITAL CONTROL VN WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD THIS DIAGRAM MAY oN ALL ANGLES 15 5 OF A DEGREE PG ScaLe NONE us 2 E NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING A COMMON CODE MATERIAL TOLERANCE 47 AGREE FM 08 02 2000 90 o 63789 100 2 15V DR DATE CHK SUP S D G NO NUMBER WITH PUBLISHED STANDARDS 75 NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual LINCOLN ELECTRIC V350 PRO ae ELECTRICAL DIAGRAMS at SCHEMATIC DIGITAL CONTROL PC BOARD 4
63. 1200 The V350 pulse programs are non synergic and allow independent 035 Steel 55 800 control of the wire feed speed at the wire feeder and the arc 045 Steel 50 700 length The Output Control Knob on the V350 adjusts an SPD 052 Steel 75 550 value Similar to trim the SPD value indicates the relative arc 045 Metal Core 50 650 length setting The SPD value displayed on the V350 may not 052 Metal Core 50 500 match the actual wire feed speed The value of SPD is meant 030 Stainless Ar Blends 85 770 to be a point at which to set the arc length relative to the wire feed 030 Stainless He Ar CO2 110 770 speed and should be set the same as actual speed for a starting 035 Stainless Ar Blends 65 770 point Depending on the application the SPD value can be adjust 035 Stainless He Ar CO2 75 770 ed to obtain the desired arc length Refer to the detailed explana 045 Stainless Ar Blends 50 600 tion at the end of this section 045 Stainless He Ar CO2 50 600 035 Aluminum 4043 100 700 The operation of the Arc Control knob on the V350 is similar to the 035 Aluminum 5356 115 740 PowerWave series As Arc Control is increased the frequency is 3 64 Aluminum 4043 80 550 increased and the background reduced Decreasing Arc Control will 3 64 Aluminum 5356 85 700 reduce frequency and increase background current Arc Control 1 16 Aluminum 4043 75 325 acts to fine tune the arc plasma to the specific application 1 16 Aluminum 5
64. 3 Return to Section Return to Master TOC o 5 F 22 1 To Auxiliary Transformer TROUBLESHOOTING amp REPAIR INPUT RECTIFIER TEST CONTINUED TEST PROCEDURE Remove input power to the V350 PRO machine Using a 5 16 nut driver remove the case wraparound cover Perform the Capacitor Discharge Procedure detailed earlier in this section Locate the input rectifier and associated leads See Figure F 3 Carefully remove the silicone sealant from leads 207 207A and 209 Using phillips head screwdriver remove leads 207 207A and 209 from the input rectifier Use the analog ohmmeter to perform the tests detailed in Table F 2 See the Wiring Diagram Visually inspect the three MOV S for damage TP1 TP2 TP3 Replace if nec essary Figure F 3 Input Rectifier Small Lead H1 3 16 ALLEN BOLTS lt FRONT REAR V350 PRO 207 207 209 Small Lead To Circuit Breaker LINCOLN 5 F 23 F 23 TROUBLESHOOTING amp REPAIR INPUT RECTIFIER TEST CONTINUED Table F 2 Input Rectifier Test Points TEST POINT TERMINALS ANALOG METER X10 RANGE Acceptable Meter Readings Greater than 1000 ohms Greater than 1000 ohms Greater than 1000 ohms Return to Section TOC Return to Master TOC Greater than 1000 ohms Greater than 1000 ohms Greater than 1000 ohms Less than 100 ohms Les
65. 4W 47 5K 1 R44 R68 T12300 79 RESISTOR WW 1W 1 0 1 R46 R76 519400 3322 RESISTOR MF 1 4W 33 2 1 NOTES R47 R64 519400 2000 1 4 200 1 NA CAUTION THIS DEVICE IS SUBJECT TO DAMAGE BY lt 3432653 RESISTOR 1007 5 STATIC ELECTRICITY LINCOLN ELECTRIC TO SEE E2454 BEFORE HANDLING R61 R77 519400 8251 RESISTOR MF 1 4W 8 25K 1 SNAP POWER TERMINALS INTO COMPONENT SIDE OF BOARD 65 R120 19400 2001 RESISTOR MF 1 4W 2 00K 1 N C UNLESS OTHERWISE SPECIFIED THESE AREAS TO BE COVERED ON BOTH SIDES OF BOARD WHERE POSSIBLE WITH SEALANT PRIOR LE 1 28 10 105 LINEAR ENCAPSULATION R83 R122 R141 519400 1000 RESISTOR MF 1 4W 100 1 N D INJECT SEALANT ITEM 8 THROUGH THE PC BOARD HOLES 16 HOLES R137 519400 3570 RESISTOR MF 1 4W 357 1 TO SEAL MODULE LEADS CAVITY BETWEEN BOARD AND MODULE TO BE COMPLETELY FILLED WITH ITEM 8 SEALANT MATERIAL AS PER 35 528400515007 SURESTSTORI HE A 4Wp 130 14 APPROPRIATE MANUFACTURING WORK INSTRUCTIONS COVER ALL R139 519400 4750 RESISTOR MF 1 4W 475 1 MODULE LEADS THAT PROTRUDE FROM THE NON MODULE SIDE OF THE R140 519400 39R2 _ RESISTOR MF 1 4W 39 2 1 BOARD WITH ITEM 8 SEALANT FEMALE EYELET BE AGAINST THE NON COMPONENT SIDE AS SHOWN n 913000246 TRANSFORMER m EYELET MUST NOT SPIN AFTER CLINCHING 13640 24 MOV 175VRMS 120 20MM SOLDER EYELET SO THAT
66. 5 2 Return to Master TOC B 11 B 11 OPERATION SPECIAL WELDING PROCESSES AVAILABLE ON THIS MACHINE POWER MODE The Power Mode process was developed by Lincoln to maintain a stable and smooth arc at low procedure settings which are needed to weld thin metal without pop outs or burning through For Aluminum welding it provides excellent control and the ability to maintain constant arc length This results in improved welding performance in two primary types of applications Short Arc MIG at low procedure settings Aluminum MIG welding Power Mode is a method of high speed regulation of the output power whenever an arc is established It provides a fast response to changes in the arc The higher the Power Mode Setting the longer the arc If a welding procedure is not established the best way to determine the Power Mode Setting is by experimenta tion until the desired output result is established In the Power Mode variables need to be set Wire Feed Speed Output Arc Control Setting up a Power Mode procedure is similar to set ting a CV MIG procedure Select a shielding gas appropriate for a short arc process e For steel use 75 25 Ar CO2 shield gas For Stainless select a Helium blend Tri Mix For Aluminum use 100 Ar Start by setting the wire feed speed based upon mate rial thickness and appropriate travel speed Then adjust the Output knob as follows For steel
67. 5 2 a Return to Section Return to Master TOC Return to Master TOC E 6 E 6 THEORY OF OPERATION THERMAL PROTECTION Two normally closed NC thermostats protect the machine from excessive operating temperatures These thermostats are wired in series and are con nected to the control board One of the thermostats is located on the heat sink of the switch board and the other is located on the output choke Excessive tem peratures may be caused by a lack of cooling air or operating the machine beyond its duty cycle or output rating If excessive operating temperatures should occur the thermostats will prevent output from the machine The yellow thermal light located on the front of the machine will be illuminated The thermostats are self resetting once the machine cools sufficiently If the thermostat shutdown was caused by excessive output or duty cycle and the fan is operating normally the power switch may be left on and the reset should occur within a 15 minute period PROTECTIVE CIRCUITS Protective circuits are designed into the V350 PRO to sense trouble and shut down the machine before damage occurs to the machine s internal components OVER CURRENT PROTECTION If the average current exceeds 450 amps for one sec ond then the output will be limited to 100 amps until the load is removed If the peak current exceeds 600 amps for 150 ms the output will be limited to 100 amps until the
68. 515018 115 Ic SMD CMOS SWITCH ANALOG QUAD 201 55 Nip 25083 35MT __ SMD POWER 47UH 10 1 25A aoe ae 1 020304 4 S25080 5MT TRANSISTOR SMD NPN 0 5A 40V SOT 23 MMBT4401LT1 S L et eee 15002 NA 05 6 2 S25051 4SMT TRANSISTOR SMD NWF SOT 23 0 17154 60V 7002LT1 S5 Ane 1 E x E ES 07 08 2 52505025 TRANSISTOR SMS PNP SOT23 0 5A 40V MMBTAAO3LTI SMD ADJ NA Q8 525051 65MT TRANSISTOR SMD 252 100455 x13 1 15102 45 _ IC ARRAY DRIVER PERIPHERAL NPN DARLINGTON BOARD BLANK REFERENCE INFORMATION BUY COMPLETE AS G4018 C 4 LAYER BOARD PER E3281 UNLESS OTHERWISE SPECIFIED CAPACITANCE MFDIVOLTS INDUCTANCE HENRIES RESISTANCE OHMS NOTES NA CAUTION THIS DEVICE IS SUBJECT TO DAMAGE BY STATIC ELECTRICITY SEE E2454 BEFORE HANDLING PROGRAM X3 WITH ITEM 7 PROGRAM 4 WITH ITEM 8 N D PROGRAM X2 WITH ITEM 9 ALL CONNECTORS MUST BE GREASED WITH ITEM 6 PRIOR TO ENCAPSULATION ATTACH ITEM 1 TO ITEM 2 WITH ITEM 3 TIGHTEN ITEM 3 TO 60 05 Nm 5 3 5 in lbs PLACE BARCODED ASSEMBLY NUMBER IDENTIFICATION AND BARCODED SERIAL IDENTIFICATION IN AREA SHOWN THESE COMPONENTS MUST BE COMPLETELY COVERED WITH ITEM 5 PLACE ITEM 10 ON PIN 8 OF J332 AS SHOWN N L BOARD TO BE POTTED WITH ITEM 4 LAYING ACROSS BOARD AS SHOWN ONLY 0 4 OR LESS OF ITEM 4 TO BE COVER
69. Bank External DC Ammeter This procedure takes approximately 45 minutes to perform Ojo O10 S 0 815 EIS 2 1 Return to Section Return to Master TOC V350 PRO LINCOLN 5 F 38 F 38 TROUBLESHOOTING AND REPAIR CURRENT TRANSDUCER TEST continued FIGURE F 10 Metal Plate Removal amp Plug J8 Location o B Return to Master TOC olo 5 55 8 2 8 28 Plug J8 TEST PROCEDURE 6 Check for the correct DC supply voltages to the current transducer at plug J8 See Figure 1 Remove input power to the V350 PRO 11 2 Using the 5 16 nut driver remove the case A Pin 2 lead 802 to pin 6 lead 806 wraparound cover should read 15 VDC 3 Perform the Input Capacitor Discharge B Pin 4 lead 804 to pin 6 lead 806 should read 15 VDC 4 Locate plug J8 on the control board Do not If either of the supply voltages are low or miss remove the plug from the P C Board ing the control board may be faulty 5 Apply the correct input power to the V350 PRO Return to Section TOC Return to Master TOC FIGURE 11 Plug J8 Viewed From Lead Side of Plug 802 804 801 O 9 9 O k Plug J8 Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC
70. C BOARD BLANK IPER PANEL SEE ELECTRONIC FILE FORI 2 C1001498 165 25 75 20 ADDITIONALINFORMATION 1 LANK PART NUMBER FOR ITEMS BELOWREFER TO ELECTRONIC COMPONENTS DATABASE FOR COMPONENT SPECIFICATIONS M19875 B 60 519365 5 _ CONNECTOR PCB WWMALE RT L 15 PIN LED T 1 3 4 RED HIGH INTENSITY OVAL CATHODE 1 R2 19400 7500 RESISTOR MF 1 4W 750 1 SQUARE 51 16 SWITCH PUSHBUTTON SPST Return to Section TOC Return to Master TOC RESISTANCE OHMS ANODE ROUND ENLARGED DETAIL LED ORIENTATION NA MANUFACTURE AS M19875 1B0 LED SELECT P E PART NO IDENTIFICATION CODE 460 Return to Master Return to Section TOC 29 ENCAPSULATE WITH E1844 2 COATS BRUSH COAT ACCEPTABLE NOTES N A DO NOT COAT WITH ENCAPSULATION MATERIAL N B INSERT ITEM 2 BETWEEN ROWS OF LED S ITEM 2 MUST BE FLUSH WITH LED BULB e 218 AE 2 x ENCAPSULATE BOARD AND LOWER HALF OF LED N D ENCAPSULATE AROUND BASE OF COMPONENT N E COAT EXTERNAL PINS WITH ENCAPSULATION MATERIAL FOR PARTS ORDERS ONLY SCHEMATIC REFERENCE 525259 1 0 TEST PER E3964 ST THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY THE LINCOLN ELECTRIC COMPANY AND IS NOT TO BE REPRODUCED DISCLOSED OR USED WITHOUT THE EXPRESS WRITTEN P
71. E 6 Protection c E 6 Over current Protection oe D e HERR Reged AER a Rea E 6 3 Under Over Voltage Protection E 6 5 Insulated Gate Bipolar Transistor IGBT 4 E 7 8 Pulse 8 5 Minimum Maximum 8 2 FIGURE E 1 V350 PRO BLOCK LOGIC DIAGRAM Main Switch Board YT 9g 7 Positive Input pu Output Input switch Rectifier Terminal Sensor gt VN O Negative Output Switch AN Terminal 2 t gt gt Current ansor amp 8 s E Primary Feedback A rimary Current Feedback 5 5 IM Supply Input Relay Control 5 Auxiliary 8 Soft Start Control 9 8 115VAC 42VAC Transformer 8 V F Capacitor Feedbac lo Machine Control Supply 15VDG 15VDC 5VDC Power i Board SPI Supply 15VDC 5VDC Control Board RS232 Supply 5VDC RS232 SPI Communications amp 15VDC 5VDC Supply Y Remote Control amp Trigger Remot
72. FAULT CODES DESCRIPTION CORRECTIVE SERVICE FACILITY CORRECTIVE DEFINITION ACTION ACTION 33 Capacitor bank Make sure the reconnect There may bea problem B upper is under switches are configured with the V F signals from voltage for the input voltage the main switch board to being applied to the the control board machine The machine is self clearing when Perform the Main Switch condition ceases Perform the Power The control board be faulty 34 Capacitor bank Make sure the reconnect There may bea problem A lower is over voltage switches are configured for the input voltage being applied to the machine The machine is self clearing when condition ceases with the V F signals from the main switch board to the control board Perform the Main Switch Board Test Perform the Power Board Test The control board may be faulty NOTE If more than one fault message is being displayed perform all the checks for the faults before replacing the printed circuit board V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 B tc Return to Section TOC Return to Master TOC Q 5 11 F 11 TROUBLESHOOTING amp REPAIR FAULT CODES DESCRIPTION CORRECTIVE SERVICE FACILITY CORRECTIVE DEFINITION ACTION ACTION 35 C
73. HIGH HEAT PULSES TIME The Peak Current Background Current and Frequency are identical for the high energy and low energy pulses In addition to cooling the weld down the major effect of the low energy pulses is that they form a weld ripple Since they occur at very regular time intervals the weld bead obtained is very uniform with a very consistent ripple pattern In fact the bead has its best appearance if no oscillation of the welding gun whipping is used See the figure below When Arc Control is used in the Pulse on Pulse modes it does the same things it does in the other pulsed modes decreasing the Arc Control decreases the droplet transfer and weld deposition rate Increasing the Arc Control increases the droplet transfer and weld deposition rate Since Arc Control varies weld droplet transfer rate the Arc Control can be used to vary the ripple spacing in the weld bead BENEFITS OF PULSE ON PULSE FROM LINCOLN ELECTRIC Excellent appearance of the weld bead Improved cleaning action Reduced porosity Table B 2 shows WFS and Trim settings for common aluminum types and wire sizes when welding with Pulse on Pulse The welds made to obtain the values in the table were fillet welds in the flat position The val ues in the table can be helpful as a starting point to establish a welding procedure From there adjust ments need to be made to set the proper procedure for each specifi
74. Locate plug J20 on the switch board Do not remove the plug from the switch board See Figure F 12 F 14 Energize the weld output terminals Select Weld Terminals ON and carefully check for 15VDC at plug J20 pin 6 to J20 pin 2 leads 715 to 716 See Figure 14 If the 15VDC is present and the fan is not running then the switch board may be faulty If the 15VDC is not present when the weld terminals are energized then the control board may be faulty Also check plugs J20 J7 and all asso ciated leads for loose or faulty connections See the Wiring Diagram WARNING HIGH VOLTAGE IS PRESENT AT THE SWITCH BOARD Remove the input power to the V350 PRO Note The fan motor may be accessed by the removal of the rear panel detailed in Current _ Removal Replacement Procedure 4 Replace the case wrap around cover FIGURE F 14 PLUG J20 Lead 716 Plug J20 Lead 715 V350 PRO LINCOLN 5 F 44 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 44 201 uonoes 901 uumeg 201 uonoes DOL uonoes F 45 F 45 TROUBLESHOOTING AND REPAIR SPI CABLE RESISTANCE AND VOLTAGE TEST WARNING Return to Section TOC Return to Master TOC Service and repair should be performed by only Lincoln Ele
75. MAIN TRANSFORMER vuriuur Main Switch Board Board Positive nput Output Input switch Rectifier Gurren Terminal Sensor O Negative Reconnect gt Output o gt Switch Terminal 270 Ji T Cirer 2 WA Sensor 5 Ems e E x 115VAC Fan Primary Current Feedback 2 5 MAGER Supp y 2 Input Relay Control 2 Auxiliary 8 Soft Start Control 115VAC 42VAC Transformer S V F Capacitor Feedback 2 2 1 Control Board Machine Control Supply 15VDC 15VDC EMI Power Board SPI Supply 15VDC 5VDC 40VDC 4 9 RS232 Supply 85232 SPI Communications T amp 15VDC 5VDC Supply Remote Control amp Trigger 6 Pin Amphenol Remote Board Mode Advanced Display Panel Process ME els Panel Control Output Weld Terminals Output Potentiometer SWITCH BOARD amp MAIN TRANSFORMER There is one switch board in the Invertec V350 Pro This board incorporates two pairs of input capacitors two insulated gate bipolar transistor IGBT switching circuits a fan motor drive circuit and a voltage fre quency capacitor feedback circuit The two capaci tors in a pair are always in series with each other
76. Memory button until the display changes The right and the left window will display what memory to save in lets say M1 To store in M1 push the Memory button again to save the Pulse Mig mode to memory M1 6 The display in the digital windows will read as follows M1 Pulse MIG Argon Blends Steel 035 Arc Cntrl 1 2 7 Saving or entering a second welding mode to a memory M2 Turn the Select knob until the desired welding process mode is displayed in right digital window Then follow steps 1 thru 6 Press the Memory button till the digital window reads Save to MEM M2 Press the Memory button again and the New Welding process is saved in M2 Adjust the output control to the correct wire feed set ting and the V350 PRO is ready to weld again Note The wire feed speed setting is not stored in memory and will need to be reset Adjust the Arc Control and note that the M1 goes away indicating that the V350 PRO settings no longer match what is stored in memory Going back to the original settings will not bring the M1 back You will need to push the Memory button to recall the original settings in M1 Note After all memory s M1 thru M8 are used and the welder needs to store another welding process a new welding process will overwrite what was originally in the memory and will read Save to MEM M1 Overwrite M1 which stored Pulse Mig is Overwritten with the new welding process LN 10 DH 10 Wire Feeder Compat
77. ON If the problem is 2 Perform the Main Switch solved the remote control Board Test device or associated circuitry may be faulty See the wiring Perform the diagram 4 Perform the 3 Put the Control Select in the Module Test Local position If the problem is solved the remote control The control board may be faulty device or associated circuitry may be faulty The input filter capacitors may be faulty Check and replace if Return to Section TOC Return to Master TOC 4 If an error code is displayed see Fault Code Explanations The remote board may be faulty The V350 Pro will not produce full 1 The input voltage may be too 1 Perform the Output Rectifier output low limiting the output capabili ty of the machine Make cer tain the input voltage is correct 2 Perform the Main Switch for the machine and the recon Board Test nect switch and jumper lead configuration 3 Perform the 2 The welding current may be too high The machine will fold 4 Perform the Current back to 100 amps if the weld ing current exceeds 450 amps O10 515 0 gt 2 EIS 2 If the preset function is not 3 Make sure the machine is in performing properly the status Local output control If the panel board or the output problem is resolved the Remote control may be faulty control board or the external remote control uni
78. QUE 12816 2071 28 800 RESISTORS Ohms 1 4W UNLESS OTHERWISE SPECIFIED LABELS 0 5 02 4 s 1 TP 7 3 m FILTER CAPACITOR VOLTAGE MONITORING E 1 00K E m p 10 OTHER SUPPLY VOLTAGE NET t J5 E E POWER SUPPLY SOURCE POINT 8 T 70 5 2 I 57 COMMON CONNECTION R99 gt SHT 4 A A V FILENAME 03789 10 1 FRAME CONNECTION gt 100K 10K m THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY THE LINCOLN ELECTRIC CO EARTH GROUND A d AND IS NOT TO BE REPRODUCED DISCLOSED OR USED WITHOUT THE EXPRESS PERMISSION OF THE LINCOLN ELECTRIC CO ETIEN olo S uk Kids SOV em B EQUIP UNLESS OTHERWISE SPECIFIED TOLERANCE Chige Sht No 0 THE LINCOLN ELECTRIC CO TYPE INVERTER WELDERS TLLA 6 2 2000A iz c 1c R3 THERMOSTA SINCE COMPONENTS OR CIRCUITRY ON A PRINTED CIRCUIT BOARD MAY CHANGE ON PLACE DECIMALS 18 2 O62 8 4 2000P CEEVELANDE OIO USA SCHEMATIC DIGITAL CONTROL SINGLE THREE PHASE DETECT 175 WITHOUT AFFECTING THE INTERCHANGEABILITY OF A COMPLETE BOARD THIS DIAGRAM MAY ON ALL ANGLES IS 5 OF A DEGREE SCALE NONE 3r ree ee ue seem NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING COMMON CODE MATERIAL TOLERANCE TO AGREE 08 02 2000 NUMBER WITH PUBLISHED STANDARDS DR DATE CHK
79. Remove input power to the V350 PRO 5 Set the MODE to the CV WIRE position Return to Section TOC Return to Master TOC 2 Connect the electrode cable from the LN 742 to the terminal of the welder Connect the work 6 Set CONTROL SELECT to LOCAL cable to the terminal of the welder 7 Place the WELD TERMINALS SELECT in the NOTE Figure C 7 shows the electrode connected REMOTE position for positive polarity To change polarity shut the welder off and reverse the electrode and work 8 Adjust wire feed speed at the LN 742 cables at the output terminals 9 Set the ARC control at initially and adjust to NOTE Welding cable must be sized for current suit and duty cycle of application Figure C 7 V350 PRO LN 742 Connection Diagram Return to Section TOC Return to Master TOC TO LN 742 INPUT CABLE PLUG 14 PIN AMPHENOL 24 42VAC AT REAR OF MACHINE K591 CONTROL CABLE ELECTRODE CABLE TO WIRE FEED UNIT TO WORK Ojo 5 5 0 815 218 5 2 Return to Section Return to Master TOC V350 PRO LINCOLN Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Q o 5 tc Return to Section TOC Return to Master TOC o 5 C 11 ACCESSORIES CONNECTI
80. Return to Master TOC Ojo O10 5 5 0 gt 218 5 2 a Return to Section Return to Master TOC C 6 C 6 ACCESSORIES CONNECTION OF THE LN 25 WITH 431 REMOTE OPTION TO THE V350 PRO NOTE AN LN 25 CAN ONLY BE USED WITH A FAC TORY OR CE VERSION OF THE V350 PRO 1 Remove input power to the V350 PRO 2 Connect the electrode cable to the output terminal of polarity required by the electrode Connect the work lead to the other terminal Welding cable must be sized for current and duty cycle of the application 3 Attach the single lead from the LN 25 control box to the work using the spring clip on the end of the lead This is only a control lead it carries no welding current 4 Set the voltmeter switch to the electrode polarity chosen 5 Set CONTROL SELECT to REMOTE 10 11 Set the MODE to the CV WIRE position Set WELD TERMINALS SELECT to the position Set the ARC CONTROL to the O position and then adjust to suit Connect the K432 remote control cable to the LN 25 Connect the K876 adapter to the K432 and to the 24 42VAC 14 pin amphenol located at the rear of the V350 PRO Adjust the wire feed speed and voltage at the LN 25 NOTE See Figure C 4 for connection Using K867 adapter Figure C 3 LN 25 with K431 Remote Option to the V350 PRO ELECTRODE CABLE TO LN 25 WORK
81. Return to Section TOC Return to Master TOC If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION The following procedure will aid the technician in removing the snubber board for mainte nance or replacement MATERIALS NEEDED Return to Section TOC Return to Master TOC 5 16 Nut Driver 7 16 Socket or Nut Driver 5 5 0 815 218 5 2 a This procedure takes approximately 15 minutes to perform Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 F 74 F 74 TROUBLESHOOTING amp REPAIR SNUBBER BOARD REMOVAL AND REPLACEMENT continued PROCEDURE 1 Remove input power to the V350 PRO 3 Perform the Input Filter Capacitor Discharge Procedure detailed earlier in this section 2 Using a 5 16 nut driver remove the case wrap around cover 4 Locate the snubber board See Figure F 32 Return to Section TOC Return to Master TOC FIGURE F 32 SNUBBER BOARD LOCATION Snubber Board Return to Section TOC Return to Master TOC LEFT SIDE 5 Remove small lead 81 from the board See 7 Carefully remove the snubber board Figure F 33 8 Replace the snubber board 6 Remove the four
82. TOC 5 16 Nut Driver 3 8 Nut Driver olo OJO 5 5 0 815 218 5 2 a This procedure takes approximately 20 minutes to perform Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC olo o 5 5 0 815 EIS 2 1 Return to Section Return to Master TOC F 76 F 76 TROUBLESHOOTING amp REPAIR POWER BOARD REMOVAL AND REPLACEMENT continued FIGURE F 34 POWER BOARD LOCATION POWER BOARD LEFT SIDE PROCEDURE 1 Remove input power to the V350 PRO 3 Perform Filter Capacitor Discharge Procedure detailed earlier in this section 2 Using a 5 16 nut driver remove the case wrap around cover 4 Locate the power board See Figure F 34 V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Q o 5 tc Return to Section TOC Return to Master TOC o 5 77 77 TROUBLESHOOTING amp REPAIR POWER BOARD REMOVAL AND REPLACEMENT continued Locate the three plug connections J41 J42 and J43 See figure F 35 Carefully remove the three plugs from the power board Remove the three nuts and at the corners of the
83. a This procedure takes approximately 20 minutes to perform Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Ojo O10 5 5 0 815 8 8 5 2 Return to Section Return to Master TOC Return to Master TOC F 48 F 48 TROUBLESHOOTING AND REPAIR VOLTAGE AND CURRENT CALIBRATION PROCEDURE continued CALIBRATION CHECK The calibration of the V350 PRO can be checked using a resistive load bank with the V350 PRO in mode 200 Mode 200 is a constant current test mode 2 1 Press and hold in the Mode Select button 2 Turn on the V350 PRO 3 Rotate the output knob while still holding the mode select button in until the displays read mode 200 NOTE Machines with an Advanced Process Panels do not have a mode select button Use the same procedure except hold in the Memory button on the advanced process panel instead of the mode select but ton 7 4 Release the Mode Select Memory button and the machine will be in mode 200 8 5 With the machine in mode 200 apply a resistive load to the welding output terminals approxi mately 087 ohms set the machine output to 9 300 amps and enable the Weld Terminals Weld Terminals Select 6 Using the test meters note the output voltage and current 11 7 The V350 PRO voltmeter must match the test meter reading to with
84. been taken to insure that such procedures will not cause flammable or toxic vapors from substances inside They can cause an explosion even though they have been cleaned For information purchase Recommended Safe Practices for the Preparation for Welding and Cutting of Containers and Piping That Have Held Hazardous Substances AWS F4 1 from the American Welding Society see address above Vent hollow castings or containers before heating cutting or welding They may explode Sparks and spatter are thrown from the welding arc Wear oil free protective garments such as leather gloves heavy shirt cuffless trousers high shoes and a cap over your hair Wear ear plugs when welding out of position or in confined places Always wear safety glasses with side shields when in a welding area Connect the work cable to the work as close to the welding area as practical Work cables connected to the building framework or other locations away from the welding area increase the possibility of the welding current passing through lifting chains crane cables or other alternate circuits This can create fire hazards or overheat lifting chains or cables until they fail 6 h Also see item 1 c V350 PRO CYLINDER may explode if damaged 7 Use only compressed gas cylinders containing the correct shielding gas for the process used and properly operating regulators designed for the gas and pressure used All hoses f
85. bolts using a 7 16 socket Two of these bolts have leads 30 and 10 connected 9 Replace the bolts leads and washers previously to them Note the position of all leads and associ removed Torque bolt to 30 40 Inch Lbs ated washers upon removal 10 Replace the case wraparound cover FIGURE F 33 SNUBBER BOARD LEADS CLOSE UP olo OJO 5 5 0 gt 218 5 2 a Eg 5 5 ee o PEN 15 919 5 Lead 20 a V350 PRO LINCOLN 75 75 TROUBLESHOOTING amp REPAIR POWER BOARD REMOVAL AND REPLACEMENT WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual Return to Section TOC Return to Master TOC If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION The following procedure will aid the technician in removing the power board for maintenance or replacement MATERIALS NEEDED Return to Section TOC Return to Master
86. contact with the conductor surfaces on the 5 15 55 V350 PRO LINCOLN 5 19 19 TROUBLESHOOTING amp REPAIR oio E MAIN SWITCH BOARD TEST continued o 8 6 any test fails replace the switch board See 8 Reconnect leads 201 202 203 204 205 206 207 208 to the switch board Ensure that the i leads installed in their proper locations 515 Ifthe switch board resistance tests are OK check Torque all leads nuts to 25 inch 16 before tight E E connections on plugs J20 J21 J22 and all asso ening them to 44 inch 108 ciated wiring See wiring diagram 9 Replace the case wraparound cover using a 5 16 nut driver TABLE 1 SWITCH BOARD RESISTANCE TEST APPLY POSITIVE TEST APPLY NEGATIVE TEST NORMAL PROBE TO TERMINAL PROBE TO TERMINAL RESISTANCE READING Greater than 1000 ohms Greater than 1000 ohms Greater than 1000 ohms Greater than 1000 ohms Less than 100 ohms Less than 100 ohms Less than 100 ohms Less than 100 ohms Return to Section TOC Return to Master TOC O10 515 0 gt 2 2 5 2 a Return to Section Return to Master TOC V350 PRO LINCOLN 5 20 5 LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 20 2
87. effective due to the voltage requirements of procedures in that power range Return to Section TOC Return to Master TOC To set machine outputs start with output control pots and arc control pots in identical positions Use the output control pots to balance the currents and main tain the desired current The arc control pots should be kept identical on the two machines Return to Section TOC Return to Master TOC 5 5 0 gt 2 2 EIS 2 1 Return to Section Return to Master TOC V350 PRO LINCOLN 5 6 5 LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH 201 uonoes 901 uumeg 201 uonoes DOL uonoes Section B 1 Section B 1 TABLE OF CONTENTS OPERATION SECTION Operation Section Satety Precautions B 2 General B 2 5 PUES RC B 2 Operational Features and B 2 Weld Mode B 3 GC SUCK SOM A B 3 CG StiCk Crisp e B 3 TIG OTAW 2 4 B E ELO 4 e Iis
88. o 7 5 TROUBLESHOOTING amp REPAIR FAULT CODES DESCRIPTION CORRECTIVE SERVICE FACILITY CORRECTIVE DEFINITION ACTION ACTION 31 Main transformer Turn the machine off and Perform the Main Switch primary over current back on to reset the machine If condition persists contact an Perform the authorized Lincoln Field Service Facility There may be a problem with the primary current sensors CT located on the main switch board See the Wiring diagram The control board may be faulty 32 Capacitor bank A Make sure the reconnect There may bea problem lower is under voltage switches are configured for the input voltage being applied to the machine The machine is self clearing when condition ceases with the V F signals from the main switch board to the control board Perform the Main Switch Perform the Power Board Test The control board may be faulty NOTE If more than one fault message is being displayed perform all the checks for the faults before replacing the printed circuit board V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC E 5 Return to Section Return to Master TOC Q 5 10 F 10 TROUBLESHOOTING amp REPAIR
89. of the Advanced Process board 17 Remove the Advanced Process board V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 tc Return to Section TOC Return to Master TOC Q 5 67 18 19 20 21 22 23 24 F 67 TROUBLESHOOTING amp REPAIR ADVANCED PROCESS PANEL REMOVAL AND REPLACEMENT continued FIGURE 28 SCREW Replace the Advanced Process board Replace the two phillips head screws at the bottom of the advanced process board Perform the Remote Board Replacement Replace the 9 16 nuts and their washers behind the Adjust and Select knobs Using a small screwdriver replace the two knobs previously removed Replace the three 5 16 screws previously removed from the front of the machine located around the Advanced Process board Reconnect plug J33 previously removed V350 PRO 25 26 27 28 Small Flathead Screwdriver Replace the four phillips head screws removed from the front of the machine located around the two welder output terminals Replace the two flat head screws and their washers from around the input power switch Using a 5 16 nut driver replace the two screws previously removed from the bottom front of the machine Replace the ca
90. olo OJO 5 5 0 gt 218 5 2 REMOTE REMOTE MOL ous SELECT SELECT i CQ Lal ADJUST ATTRIBUTE Flathead Screws Phillips Head Screws 5 16 Screws Return to Section TOC Return to Master TOC V350 PRO LINCOLN Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o E 5 Return to Section Return to Master TOC o 5 53 53 TROUBLESHOOTING REPAIR CONTROL BOARD REMOVAL AND REPLACEMENT continued FIGURE F 18 CONTROL BOARD CAUTION Observe static precautions detailed in 9 Board Troubleshooting Procedures at the beginning of this section 6 Using a flat head screwdriver remove the two 10 screws and their washers from above and below the input power switch See Figure F 17 7 Using a phillips head screwdriver remove the four screws from around the two welder output termi nals on the front of the machine See Figure 17 11 V350 PRO ALL PLUG LOCATIONS The front of the machine may now gently be pulled forward to gain access to the display Board Note The front of the machine cannot be removed com pletely
91. only pulled forward a few inches Beginning at the right side of the control board remove plugs J10A and J10B Note Be sure to label each plugs position upon removal See Figure F 18 Working your way across the top of the board from right to left label and remove plugs 49 8 7 J6 and J5 See Figure 18 Working your way down the left side of the board label and remove plugs J4 and J3 See Figure 18 LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 tc Return to Section TOC Return to Master TOC Q 5 F 54 12 13 15 16 17 18 F 54 TROUBLESHOOTING amp REPAIR CONTROL BOARD REMOVAL AND REPLACEMENT continued Using a 3 8 nut driver remove the two mounting nuts from the top two corners of the control board See Figure F 19 Cut any necessary cable ties 14 Replace the control board FIGURE F 19 CONTROL BOARD MOUNTING SCREW LOCATION Mounting Nuts 3 8 Replace the two 3 8 mounting nuts at the top two corners of the control board Replace any previously removed cable ties Replace plugs 3 4 J6 7 48 J9 J10B and J10A previously removed 21 Replace the two screws and their washers from above and below the input power switch 22 V350 PRO 19 20
92. step procedure listed below Step 1 LOCATE PROBLEM SYMPTOM Look under the column labeled PROBLEM SYMPTOMS This column describes possible symptoms that the machine may exhibit Find the listing that best describes the symptom that the machine is exhibiting Symptoms grouped into three main categories Output Problems Function Problems and LED Function Problems Step 2 PERFORM EXTERNAL TESTS The second column labeled POSSIBLE AREAS OF MISADJUSTMENT S lists the obvious external possibilities that may contribute to the machine symptom Perform these tests checks in the order listed general these tests can be conducted without removing the case wrap around cover Step 3 PERFORM COMPONENT TESTS The last column labeled Recommended Course of Action lists the most likely components that may have failed in your machine It also specifies the appropriate test procedure to verify that the subject component is either good or bad If there are a number of possible components check the components in the order listed to eliminate one possibility at a time until you locate the cause of your problem All of the referenced test procedures referred to in the Troubleshooting Guide are described in detail at the end of this chapter Refer to the Troubleshooting and Repair Table of Contents to locate each specific Test Procedure All of the referred to test points components terminal strips etc can be fou
93. terminal Set the meter polarity switch on the front of the Invertec to coincide with wire feeder polarity used The wire feeder will now display the welding voltage e If K480 is not available see connection diagram 519404 for modification of K291 or K404 LN 7 input cable with K867 Universal Adapter Plug If a remote control such as K857 is to be used with the LN 7 the remote can be connected directly to the 6 pin MS style connector on the front of the Invertec or use K864 adapter to connect the LN 7 and the remote to the 14 pin MS style connector See connection diagram 519901 LN 10 Connection Instructions An LN 10 can only be used with the Factory amp Advanced Process versions of the 350 Pro Turn the Invertec power switch off Connect the K1505 control cable from the LN 10 to the 14 pin MS style connector Connect the electrode cable to the output terminal of polarity required by the electrode Connect the work lead to the other terminal Set the meter polarity switch on the front of the Invertec to coincide with wire feeder polarity used See the LN 10 manual for details on accessing Control DIP Switch LN 742 Connection Instructions An LN 742 can only be used with the Factory amp Advanced Process versions of the 350 Pro Turn the Invertec power switch off Either a K591 or a K593 Input cable assembly is required to connect the LN 742 to the Invertec Connect the control c
94. that the brightness of the characters is uniform 0123456789ABCDEF Press and release the Advanced Process Panel Memory button to advance to the next step V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Ojo O10 515 0 815 EIS 2 1 Return to Section Return to Master TOC TROUBLESHOOTING AND REPAIR RETEST AFTER REPAIR E Expected Results Required Acti Verify that the Advanced Process Panel upper right dis play contains the following pattern and that the bright ness of the characters is uniform 0123456789ABCDEF Press and release the Advanced Process Panel Memory button to advance to the next step Verify that the Advanced Process Panel lower right dis dISP play contains the following pattern and that the bright ness of the characters is uniform 0123456789ABCDEF Press and release the Advanced Process Panel Memory button to advance to the next step The weld terminals and REMOTE LEDs should SudS on both be off Press the weld terminals push button to select weld terminals studs ON and verify that the weld terminals ON LED turns on Press the weld terminals push button again to select SudS weld terminals REMOTE and verify that the weld ter minals ON LED turns off and that the weld terminals REMOTE LED turns on 27 Press the w
95. the Output Control knob again if necessary to make the actual output cur rent reading the test ammeter 300 amps 2A Wait for the machines output to be auto matically turned off and then back on Repeat the above two steps if necessary Press and release the Mode Select Memory button to save the calibra tion The left display will scroll the message IcAL SAVEd The machine will reset to normal operation NOTE If the Mode Select Memory button is not pressed within 30 seconds after adjusting the Output Control Knob the machine will leave the calibration mode and use the previous calibration settings LINCOLN 5 F 49 F 50 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 50 201 uonoes DOL uonoes uumeg 201 uonoes DOL uonoes Return to Section Return to Master TOC Return to Section TOC 5 5 0 815 218 5 2 a Return to Section Return to Master TOC Return to Master TOC F 51 TROUBLESHOOTING amp REPAIR CONTROL BOARD REMOVAL AND REPLACEMENT WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory w
96. the V350 PRO Using the 5 16 nut driver remove the case wraparound cover Perform the Capacitor Discharge Procedure the Display Board Removal Perform 4 Do not remove the SPI ribbon cable connecting the display board to the remote status boards Locate and remove plug J3 from the control board See Figure F 15 Check the resistance and continuity of the SPI cable by testing with the ohmmeter from each pin on plug J3 to the corresponding pins on plug J34 See the Wiring Diagram The resistance reading pin to corresponding pin should be zero ohms or very low resis tance If the resistance reading is high or open check the plug connections to the SPI network PC boards If the connections are OK and the resistance is high or open the SPI cable may be faulty 10 11 12 13 14 15 16 17 Reconnect the plug into the control board and perform the Display Board Replacement With plug J3 still removed from the control board carefully apply the correct input power to V350 PRO Turn on the machine Carefully check for the presence of 15VDC from plug J3 pin 1 to plug J3 pin 10 at the control board receptacle See Figure F 15 Carefully check for the presence of 5VDC from plug J3 pin 2 to plug J3 pin 10 at the control board receptacle See Figure F 15 If either of these voltages are low or not pre sent the control board may be faulty Replace Also Perform th
97. the first weld mode Only the top weld mode indicator LED should be on all others should be off Press the weld mode select push button again to select NodE the second weld mode Only the second weld mode indicator LED should be on all others should be off Press the weld mode select push button again to select NodE the third weld mode Only the third weld mode indicator LED should be on all others should be off Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Ojo O10 515 0 815 218 5 2 a cator LED should be on all others should be off Press the weld mode select push button again to select NodE the fifth weld mode Only the bottom weld mode indica tor LED should be on all others should be off Press the weld mode select push button again and veri fy that all weld mode indicator LEDs are off The test will automatically advance to step 25 V350 PRO LINCOLN 5 M Press the weld mode select push button again to select NodE the fourth weld mode Only the fourth weld mode indi Return to Section TOC Return to Master TOC F 93 F 93 TROUBLESHOOTING AND REPAIR RETEST AFTER REPAIR Test Steps Lft display Rt display NOTE If an Advanced Process Panel is not installed in the machine skip steps 13 24 Turn the Advanced Process Panel left encoder clockwise LEnc 100 until the value displayed on the A
98. the unit cools down to an accept able temperature level If the unit was operating in the REMOTE mode the trigger will need to be opened before or after the thermal has cleared and closed after the machine has cooled down to an acceptable temperature to establish output 6 CONTROL REMOTE LOCAL Two status lights indicate the location of output control as pre determined by the power sources auto configure sys tem The LOCAL display will be lit when control is at the power source The REMOTE display will be lit when a remote pot control is detected These Output Control configurations can be overridden switched with the CONTROL push button When changed the unit will power up in the configuration it was in when it was last powered down 7 WELD MODE SELECT FACTORY AND CONSTRUCTION See Figure B 1 The Mode Control button selects from the following welding modes CC STICK SOFT The Stick Soft process features con tinuous control ranging from 5 to 425 amps This mode was intended for most SMAW applications and Arc Gouging Arc Gouging Setting the output of the Stick Soft mode to 425 amps will enable the arc gouging mode The actual output current will depend on the size of carbon used The recommended maximum size carbon is 5 16 The Hot Start control regulates the starting current at arc initiation Hot Start can be adjusted from min imum 0 with no additional current added at arc start to maximum
99. to remain in contact with the work to allow for gas coverage before attempting to start the arc The solenoid will close after the arc has been broken and the post flow time expired CV WIRE The CV WIRE mode features continuous control from 10 to 40 volts The mode was intended for most GMAW FCAW and MCAW applications Hot Start control is not used in the CV WIRE mode Arc Control regulates pinch effect At the mini mum setting 10 minimizes pinch and results in a soft arc Low pinch settings are preferable for weld ing with gas mixes containing mostly inert gases At the maximum setting 10 maximizes pinch effect and results in a crisp arc High pinch settings are preferable for welding FCAW and GMAW with 2 CV INNERSHEILD The CV INNERSHEILD mode features continuous control from 10 to 45 volts This mode was designed for self shielded flux cored wires that require tight voltage control Hot Start control is not active in the CV FLUX CORED mode Arc Control regulates pinch effect At the mini mum setting 10 minimizes pinch and results in a soft arc At the maximum setting 10 maximizes pinch effect and results in a crisp arc Most self shielded wires work well at an Arc Control setting of 5 V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o E 5
100. troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION The following procedure will aid the technician in removing the input rectifier for maintenance or replacement MATERIALS NEEDED Return to Section TOC Return to Master TOC 3 16 Allen wrench 5 16 Nut Driver Flathead Screwdriver Penetrox A 13 Heatsink Compound Silicon Sealant This procedure takes approximately 30 minutes to perform Ojo O10 5 5 0 815 218 5 2 a Return to Section Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC olo OJO 5 5 0 gt 218 5 2 Return to Section Return to Master TOC F 80 F 80 TROUBLESHOOTING amp REPAIR INPUT RECTIFIER REMOVAL AND REPLACEMENT continued PROCEDURE 1 Remove input power to the V350 PRO 2 Using a 5 16 nut driver remove the case wraparound cover 3 Perform Filter Capacitor Discharge detailed earlier in this section 4 Locate the input rectifier See figure F 36 5 Carefully remove the silicon sealant insulating the six input rectifier terminals 6 T Remove the six screws from the terminals using a flathead screwdriver Carefully note the position of all leads and their positions upon removal See Using a 3 16 in allen wrench remove the
101. 0 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC olo OJO 5 5 0 815 218 5 2 a Return to Section Return to Master TOC F 89 F 89 TROUBLESHOOTING amp REPAIR CURRENT TRANSDUCER REMOVAL AND REPLACEMENT continued 5 Label and remove the five leads connected to the 9 Using a hammer and a flathead screwdriver firmly reconnect panel Pliers may be necessary tap the metal nut from the bottom of one of its ribs This tapping will loosen the nut Note Be sure to 6 Label and remove the two leads connected to the tap from the bottom so the nut loosens in a counter CB2 circuit breaker clockwise fashion if viewed from the front of the machine 7 Using a crescent wrench remove the large plastic nut from around the input power line located at bot 10 Using a 3 8 nut driver label and remove leads tom of the rear assembly See Figure 41 202 203 206 207A from the reconnect switches See Figure F 41 8 Locate the steel nut located directly on the other side of the rear assembly behind the plastic nut that was previously removed See Figure F 41 FIGURE F 41 LEAD LOCATIONS V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC Q o E 5
102. 01 uonoes DOL uonoes uumeg 201 uonoes DOL uonoes 21 F 21 TROUBLESHOOTING amp REPAIR INPUT RECTIFIER TEST WARNING Return to Section TOC Return to Master TOC Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION This test will help determine if the input rectifier has shorted or open diodes Return to Section TOC Return to Master TOC MATERIALS NEEDED Analog Voltmeter Ohmmeter Multimeter 5 16 Nut Driver Phillips Head Screwdriver Wiring Diagram Ojo O10 5 5 0 815 218 5 2 a This procedure takes approximately 25 minutes to perform Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 2 2
103. 015 88 DATA 15 9 t EN 12 24 ra SHT 4 AUS aaz o 3 082 ET 23 FC2 PUHEEN SHT 4 5 vora Matana 5 Kh 0 22 puio 001139 DATA OI ADDRULI 19 0 1001285 DATAU121 olo 5V FAULT R8S ie 100v 21 1 pi von 2 Bak O75 3 021137 ADORI 2948 1001081 C142 Du DN tis TS 14 TPUCHI3 03 136 DATAISI ADDRI8 21 1 09 30 DATAI9I 5 ic m 02 16V E 15 p 133 DATAIA ADDRITI 2446 vok DATAIBI 513 Tv rogos ps 132 DATAISI ADDRIGI 234 100716 34 RE sere Miso 69 poso pe 131 ADDRISI 28 vos t5 DATAI6I NK SHT 34 MOSI 2051 07 130 7 ADDRIAT 21 1 05 L4 DATAISI SCK 61 127 DATAIBI ADDRI3I 42 13 1 LG op LG PY os V MSU TY sur SHT 34 2052 _42 a2 vopi 8200 51v 8200 51V Bar AS 920 THERMOSTAT 40 cis SHT 4 SPLCSO 68053 po i25 ADDRIZI 23 12816 24011 1 0 9 DATAGI 1 2W 1 2W 55007 41 70281 170282 38 SHT 4 5 51 69 0101125 01 100215 2 32 sins OVR_CUR 42 pul RESET RAMP T SHT 4 mE 79 pass pii 22 152 vor ___DATAI1 15V FETB 2 pga STROBE_AD SHT 4 52153 71 pase 012 19 DATA 121 TSZ vol
104. 057 gt 051 F IR lero A 0101 0v Z0v 2 8 amp 209 PRIMARY CURRENT SENSE iig E 5VA RES LFLOW STT C124 7 0 15 pgo CD SHT 2 ld pei ___ 5 I o 70V ES AD DATAIZ 13 082 T x2 7 ADDATAI3 12 pe 528 4 R54 858 6 SES x AD_DATAI4 11 vA LAD TOOK TOOK olo ve 8 y RI0B RI06 m A gt SHT 4 s 400v Er 5 R66 N a out SHT 1 TOK TOOK zt Bleue 19 UN ZZK 9 eO 7 LADT INPUT FROM 2ND LEM 8 fe n 8 js i 7 ae gt ZR 8 100K v m iE AD DATA 2 10071 4102 39 20 o 100V 0 6 res 8214 315 i M STT CURR olo C125 TOK 1 C26 0510 Anses C128 8 m x32 6 ir 2 4 TH 11 TEE 2 T V 50V 54 18 50 1 lt 56A E 10K BRI DA CS 1 55 SV SHT 4 um V 4 PRIMARY CURRENT SHUTDOWN 0 3 09 VEER 2 ea 20 c E RLI oe DUCER 100K wt SIGNAL IN 5 LV 400A OUTPUT A Er SP 5VA 5VA 9 VOLTAGI V 330740 x 01
105. 1 FPGA RESET cidcm SHT 4 GA RESE 15 ADDRI171 48 16 pois 9 DATAI15 UA Sur FPGA DONE 113 ADORTI ADORIS if ATK 40V 112 4210 ADDRIZI ADDRIL9 19 Mg RMC 111 ADDRI3I CSB 28 SHT 4 RMC 7 1 2 em imr DA 5 FET B AS 106 xc m ADDR R W 100 70V FET_A M SHT amp Ds 105 aska ADORIS 28 3 jue 1 105 6170 NM ADDRI6I 10 lerre 104 s171 ATUS ADDRI7 p T 102 pfo m ADORIBI VHCLAD A SHT 23 lt SYS_RESET 101 ni ADDRI9I D 03 1002 ADDRI101 f fel gt 9 995r ADDRILII TZ ORS 33 6 5 FPGA_INT 5 52 ADDRI12 400V 400V i SHT 4 a E s any 2 Slo _ ADDRIL3I 37 4 z FPGA_BAD 98 ore A1457 0084 Wi f m SHT 4 mE 33pr ADDRIL 191 umo SHT 2 15V 15V s el 100V A TPUIO 6 1 Aie 62 ADDRI16 gt ji T 5 TIS 3 3 34 TPUCHO 17 63 ADDRI171 ADDRIL8 LEVEL_IN FAULT TPUCHL A18 SHT 2 5V E 16V SIGNAL 19 6 eile 70 712 A20 Z DSP RESET 3 SHT 4 8 8 VPP CTRL ADDRIL7I 22 6 5 SHT 2 29 TPUCHS A222 SHT 4 Hais 1047 Ve 2310 LANES SHT 2 o o C 15V pr TPUCH7 0080 4 3 A13 1
106. 2 1 PDONOLSCALE THISDRAWING O o e 5 5 0 PEN 6 8 5 2 o x Return to Section Return to Master TOC NOTE Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting PC Board repairs will invalidate your factory warranty Individual Printed Circuit Board Components not available from Lincoln Electric This information is pro vided for reference only Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician Improper PC board repairs could result in damage to the LINCOLN ine LINCOLN machine V350 PRO Return to Section Return to Master TOC Return to Section TOC Return to Master TOC 5 5 0 815 218 5 2 Return to Section Return to Master TOC SVM ERROR REPORTING FORM We need to know if there are errors in our manuals We also value any suggestions as to additional tests or procedures that would make this SVM a better tool for you If you discover new or different Problems or Symptoms that are not covered in the three col umn troubleshooting chart please share this information with us Please include the machine s code number and how the problem was resolved Thank You Technical Services Group Lincoln Electric Co 22
107. 2 P1 6 AD14 45V 3w Yt PLI ADLS DATAUSI YE 57 GREEN V x C116 8 RE amd ADDRIL 19 T RM Ed DATAIO 151 ins 2 ON GCAN 50 50 v 026 400 rd D COMMUNICATION CIRCUITRY 8 2428 400V 100 121 JB 01 8 __ 93 011 50V X MUN COMMUNICATION CIRCUITRY 3W 5V 5 GENERAL INFORMATION LAST NO USED J8 6 ELECTRICAL SYMBOLS PER E1537 4 CAPACITORS MFD 022 50 UNLESS OTHERWISE SPECIFIED 7228 C134 V GcAN RESISTORS Ohms 1 4W UNLESS OTHERWISE SPECIFIED LABELS DIODES 1A 400V UNLESS OTHERWISE SPECIFIED 5 o TU bv 1 ISOLATION BARRIER SUPPLY VOLTAGE NET am 5 POWER SUPPLY SOURCE POINT o 3 R52 28 oe 57 COMMON CONNECTION 6 100 T 82527 50V FILENAM G3789_1D 77 FRAME CONNECTION gt A THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY LINCOLN ELECTRIC CO Si EARTHIGRDUND CONNECTION o 0 AND IS NOT TO BE REPRODUCED DISCLOSED OR USED WITHOUT THE EXPRESS PERMISSION OF THE LINCOLN ELECTRIC j 918 MUSEUM a EE INVERTER WELDERS H ON HOLES SIZES PER 2056 Uv ON 2 PLACE DECIMALS 154 02 5 2 2000A CLEVELAND OHIO U S A SCHEMATIC DIGITAL CONTROL SINCE COMPONENTS OR CIRCUITRY PRINTED CIRCUIT BOARD MAY CHANGE PLACE DECIMALS 15 002 8 4 2000P 02 WITHOUT AFFECTING T
108. 356 75 450 Preferred gas selections Return to Section TOC Return to Master TOC Steel Argon Blends Argon with CO2 additions from 2 to 20 or Oxygen additions from 2 to 5 Stainless Argon Blends Argon with Oxygen additions up to 2 Return to Section TOC Return to Master TOC Stainless He Ar CO2 90 Helium 7 1 2 Argon 2 1 2 CO2 Aluminum 100 Argon 035 Nickel Alloys Non Adaptive 80 700 The Nickel Alloy pulse programs are non adaptive The operator 045 Nickel Alloys Non Adaptive 75 550 sets the output control knob to deliver the correct arc length at desired wire feed speed and stick out While welding the operator manipulates the stick out to maintain the correct arc length This method of operation produces very stable arc performance consid ering the nature of nickel alloys Preferred gas Argon Helium Blends for the best results add helium to the argon base from 0 25 PULSE ON PULSE Arc Control Pulse on Pulse frequency For faster travel 4x Pulse on 85 400 speed welds the arc control should be increased 5x Pulse on Pulse 130 700 For larger puddle slower travel speeds the arc control 5x Pulse on Pulse 100 550 should be decreased Refer to the detailed explanation at the end of this section O10 515 0 815 218 5 2 IPM INCHES PER MINUTE Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 Return to Se
109. 5 xe gt is 25 oe id nep TP3 50V R26 7 E TTK 33K VK asy x5 18 1 R23 R27 al enol D Mu Ve T our 8 5H TTSK gt 859 e R46 5 VR sat 4 xi c xp 02 a toa pet 100 p 100 5 6 E 7 0022 2 SEL I ON 06417 m 868 zt N 07945885 50 8403ARULO 50V 40 SHT 4 4 5 50V a 1 100K TOK dom Leva 25 N LE 211175 221175 9 R24 RZB 3 15V wa 507 1016558 771 v TE 2 or zmse 8 lt CURRENT LIMIT ane E EM 50 RUZ IS AT xg 2120 gt C T50K 100K gt 50 M Ww Ve wt 19 CURRENT NODE CONTROL DISABLE THE V sur 2 5V gt 18 FETS AS SOON AS PRIMARY CURRENT 5v 15V lout 099 R IS GREATER THAN A REFERENCE LEVEL 15V O o 330740 gt 9 5V Ve 8 8 RIAL 02A n _ 030 4 _ 657 4 SHT 2 5v 01 01 _ i R69 175 i 50V 50V 10 01 9 8 5 side sva Sla bt s isv CURRENT FEEDBACK _ K 20 gt SHT 2 15V INTEGRATOR 3T Aw 330740 i 330740 es 330740 cos 5 50 S amp T TQ 014 T 01 7 c T 0 0 29 STUP R127 3 067 50 50 1 dou 5 TN V P cic alee 8 p 38070 S3A DA 5 48 9 WE thun R122 7 m 100K 1 24 R209 R128 7 150 5 amp rd TIK IIX o 9 32
110. 8 ACCESSORIES CONNECTION OF THE LN 7 TO THE V350 PRO USING K480 CONTROL CABLE SEE FIGURE C 5 NOTE AN LN 7 CAN ONLY BE USED WITH A FAC TORY OR CE VERSION OF THE V350 PRO IF YOUR LN 7 COMES EQUIPPED WITH A K291 OR K404 INPUT CABLE REFER TO THE CONNECTION OF THE LN 7 USING K867 UNIVERSAL ADAPTER 1 Remove input power to the V350 PRO 2 Connectthe electrode cable from the K480 control cable to the terminal of the welder and to the LN 7 wire feeder Connect the work cable to the terminal of the welder NOTE Figure C 5 shows the electrode connected for positive polarity To change polarity shut the welder off and reverse the electrode and work cables at the output terminals NOTE Welding cable must be sized for current and duty cycle of application 3 Connect the input cable from the K480 control cable to the 115VAC 14 pin amphenol on the V350 PRO and the input cable plug on the LN 7 Set the VOLTMETER switch to or depending on the polarity chosen Set CONTROL SELECT to REMOTE Set the MODE to the CV WIRE position Place the WELD TERMINALS SELECT in the position Adjust wire feed speed at the LN 7 and adjust the welding voltage with the optional remote control if used Set the ARC control at 0 initially and adjust to suit Figure C 5 V350 PRO LN 7 with K480 Control Cable Connection Diagram 14 PIN
111. 8 T12702 19 ZENER DIODE 1W 12V 5 1N4742A 079 0710 0712 0713 T12702 45 ZENER DIODE 1W 18V 5 1N4746A NON COMPONENT 0211 0222 112702 4 ZENER DIODE 1W 20V 5 1N4747A SIDE 120 121 524016 8 CONNECTOR MOLEX MINI PCB RT L 8 PIN EYELET DETAIL J22 524016 4 CONNECTOR MOLEX MINI PCB RT L 4 PIN 0 11 0 12 0 13 515000 22 OPTOCOUPLER PHOTO Q 70V CNY17 3 VDE 0 14 515000 29 OPTOCOUPLER TRIAC DRV RANDOM 600V 01 T12704 75 TRANSISTOR T247 900V SS 02 03 04 05 T12704 73 MOSFET 4 PIN DIP 1A 100V RFD110 SS R1 R2 R3 R4 R7 RB R9 R10 T14648 5 RESISTOR WW 5W 3 3K 5 50 R124 R125 R126 R127 R130 R131 R132 R133 R5 R6 R19 R26 R93 R105 519400 1001 515 1 00 1 R109 R128 R129 R11 R12 R30 R31 R142 519400 1503 RESISTOR 150 1 R13 R39 R43 R60 R81 R92 519400 3321 RESISTOR 3 32 1 R14 R107 519400 1652 RESISTOR 16 5 1 R15 R20 R21 R22 R27 R28 519400 10 RESISTOR 10 0 1 MANUFACTURED AS R97 R98 R99 R100 R101 R106 R32 R33 R34 R48 R49 R50 519400 1003 RESISTOR MF 100K 1 G3830 1 DO R51 R62 R63 R74 R75 R85 NB N G R86 R87 R134 R135 5 PLACES R35 R52 R73 R84 519400 6191 RESISTOR MF 1 4W 6 19K 1 IDENTIFICATION CODE R36 R37 R123 519400 2213 RESISTOR MF 1 4W 221K 1 PART NO R38 R40 R42 RA5 R53 R59 519400 1002 1 4W 10 0K 1 R66 R69 R70 R72 R80 R82 41 67 519400 4752 RESISTOR MF 1
112. 8 site RIS 1259 5 Es 4 z SECONDARY CURRENT SENSE tt 100K 1 24 Q 100 AR 8 5 7 RU gy 09 m EL 85 VA EN 100K 1 2W SHT 1 9 xo 8 y i 29 16 z uci 242 lt lt 3500 VOLTS E 57 3 TOUR 47 EN CONNECTOR 95 OHM 5 0 2 id d 100MHz SHT 4 MSELO g 332 xm 9 ceo l slug cso 8 i R138 90 Nin 50 zv A Ts SHT 4 IDEAL VOLTAGE R124 R125 R118 R206 27 MA 100K T50K T50K 100K E 3 SHT 4 MSELEN R120 4 r 330740 26 126 R130 27 8126 68K RLS 1 BET TETK 100K E ii 1 lt GAIN lt 11 V Ve gt oy 0 400V 15V gt R121 gt 330740 150K 3 pis 6 50v 7 t RIZ9 1P6 7 1 pes IDEAL VRD Ojo 3 1 Ate 25 70 ARCVOLTS GENERAL INFORMATION perum 035 037 041 039 IR 3 10 O 51V 51V 5 51V 51V ELECTRICAL SYMBOLS PER E1537 Re 1 2W 1 20 1 20 1 28 050 vA CAPACITORS MFD 022 50 UNLESS OTHERWISE SPECIFIE 4 a gt RESISTORS Ohms 1 4W UNLESS OTHERWISE SPECIFIED LABELS gt lix Ge cm VOLTAGE FEEDBACK DIODES 1A 400V UNLESS OTHERWISE SPECIFIED SUPPLY VOLTAGE NET to iW 4 198 E 1006 M 15V POWER SUPPLY SOURCE POINT COMMON CONNECTIO 16 5VA 4 ss E 036
113. 801 ST Clair Ave Cleveland Ohio 44117 1199 FAX 216 481 2309 SVM Number Page Number if necessary Your Company Your Name Please give detailed description below SD287 01 99 LINCOLN 5
114. B shows the IGBT in an active mode When the gate signal a positive DC voltage relative to the Source is applied to the gate terminal of the IGBT it is capable of conducting current A voltage supply con nected to the drain terminal will allow the IGBT to con duct and supply current to the circuit components coupled to the source Current will flow through the conducting IGBT to downstream components as long as the positive gate signal is present This is similar to turning ON a light switch FIGURE E 6 IGBT GATE lt BODY REGION DRAIN DRIFT REGION BUFFER LAYER INJECTING LAYER DRAIN A PASSIVE POSITIVE VOLTAGE f APPLIED GATE SOURCE 0222 BODY REGION DRAIN DRIFT REGION BUFFER LAYER INJECTING LAYER DRAIN B ACTIVE V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC olo OJO 5 5 0 gt 2 2 EIS 2 fe Return to Section Return to Master TOC Return to Master TOC E 8 E 8 THEORY OF OPERATION FIGURE E 7 TYPICAL IGBT OUTPUTS lusec 48 u 50 MINIMUM OUTPUT 24usec 2 94 sec 50 u sec MAXIMUM OUTPUT PULSE WIDTH MODULATION The term Pulse Width Mod
115. C Return to Master TOC B40 10 5 W Return to Section TOC Return to Master TOC C4 0047 1000V e 5 0 eis 5 2 o x 6 2 2000 524761 Return to Section Return to Master TOC NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual 0 20 ELECTRICAL DIAGRAMS G 20 PC BOARD ASSEMBLY SNUBBER gt Return to Section Return to Master TOC 520500 4 CAPACITOR PPMF 0047 1000V BOX T14648 20 RESISTOR WW 5W 150 5 SQ PART DESCRIPTION 19532 BOARD BLANK 113157 16 TERMINAL 19147 11 EYELET FEMALE 4 19147 15 EYELET MALE NOTES FEMALE EYELET TO BE AGAINST THE COPPER SIDE AS SHOWN EYELET MUST NOT SPIN AFTER CLINCHING N B SOLDER EYELET SO THAT SOLDER COVERS ENTIRE EYELET AND ALL AROUND EYELET ON COPPER SIDE ONLY NO ICICLES OR SOLDER BLOBS PERMITTED Return to Section TOC Return to Master TOC COPPER SIDE EYELET DETAIL MANUFACTURED AS ENCAPSULATE WITH E1844 2 COATS TEST PER E3817 SN _ MAKE PER E1911 19532 1 0 IDENTIFICATION CODE MANUFACTURING TOLERANCE PER E2056 mcr PE LITE INVERTER DERS ON ALL ANGLES 15 5OFADEGREE UF SUBJECT SNUBBER BOARD ASSEMBLY MAT ERIA TOLERANCE DUREE ISUPERSEDING SCALENONE DATEIO 6 99 DRAWNGNo 1953
116. CT PLUGS A quick disconnect system is used for the welding cable connections The K852 70 is designed to accept a welding cable size of 1 0 to 2 0 1 Remove 25mm 1 in of welding cable insulation Return to Section TOC Return to Master TOC 2 Slide rubber boot onto cable end The boot end may be trimmed to match the cable diameter Soap or other lubricant will help to slide the boot over the cable WELDING CABLE TRIM Ec 1in 3 Slide the copper tube into the brass plug 4 Insert cable into copper tube Return to Section TOC Return to Master TOC SCREW BRASS PLUG 5 Tighten set screw to collapse copper tube Screw must apply pressure against welding cable The top of the set screw will be well below the surface of the brass plug after tightening COPPER TUBE 6 Slide rubber boot over brass plug The rubber boot must be positioned to completely cover all electrical surfaces after the plug is locked into the receptacle 5 5 0 815 218 5 2 a Return to Section Return to Master TOC V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC olo OJO 5 5 0 815 218 5 2 Return to Section Return to Master TOC 64 ACCESSORIES CONNECTION OF LINCOLN ELEC TRIC WIRE FEEDERS CONNECTION OF THE LN 25 T
117. Cobramatic amp Tig Module Connection C 2 Options ACCessories tdi ao RARE C 2 Quick Disconnect PIUQS che inox Eee Ec red spe rn Een E Ee oru ad ea E ea ie d C 3 Connection of Lincoln Electric Wire C 4 Thru C 11 V350 PRO LN 25 with Optional 6 Pin K441 1 C 4 V350 PRO LN 25 with Optional 6 Pin K857 C 5 LN 25 with K431 Remote C 6 V350 PRO LN 25 with K867 C 7 V350 PRO LN 7 with K480 Control Cable essent C 8 V350 PRO LN 7 with K867 Adapter esses nennen nennen nnne nns C 9 MAIJ 10 V350 PRO LN 10 with K1505 Control 11 V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 B tc Return to Section TOC Return to Master TOC Q 5 2 ACCESSORIES Cobramatic Connection Instructions A Cobramatic can only be used with a Factory or CE version of the V350 1 Turn the Invertec power switch off 2 Connect the control cable from the Cobramatic to the 24 42 VAC 14 pin wire feeder amp
118. D ENABLE 4211 9481 NEG_PS ENABLES V STAT 2 yogpi 0782 3 6 PIN SENSE MOD 3 ep 14_PIN_SENSE REM 5 loop Sarei MISO 6 me GPINLOUT EN 7 ci ed 14PIN OUT EN 8 1261 7 013B1 01482 1 FTP2 FTP3 01581 STUD 016 1 9536 001682120 otra 01762 AD_DOUT 10VREF GCK1 O 0 GCK2 TD 0 GCK3 Too 24 0 GTS1 TMS 0 GTS2 al 5 0 GSR 4 vee aut mm Bg HOVREF MODE XTAL 0 5VREF 33 164 X aw 6 gt OVREF_STATUS Sponysecx anol 23 s C57 0510752 REMOTE OUTPU Return to Section Return to Master TOC BLOCK 2 LOCAL PO gt 10VREF INTERFACE 250KHZ OSCILLA TOR 332 EDT pra lt lt CONVERTER 8 T AD DI 6_PIN_POT 14 LMODE_POT Ves lt 1 RMODE_POT 30 5 6 AD_DOUT i FUNCTION ENABLE UMPERS Dout 5VREF 332 il TM STATUS
119. DIDISDI DIS 4 E2MO 2SMT SMD 1A ADV DO 21ABAIAC R97 1 525000 25725 RESISTOR SMD METAL FILM 1 0W 26 7K 1 S0805 16017 2 525 055 DIODE SMD DUAL O200A 70V UFR R98 R99 2 525000 20025 RESISTOR SMD METAL FILM 1 10W 20 0K 196 0805 618 019 2 52504045 DIODE SMD DUAL0 200A 70V R100 R107 R102 3 525000 10015 RESISTOR SMD METAL FILM 1 10W 1 00K 1 S0805 020 1 525045 25 000 SMD 1A 30V SMA SCHOTTKY R103 R104 R105 R106 R107 6 525000 56225 RESISTOR SMD METAL FILM 1 10W 56 2K 1 S0805 071 072 2 525044 157 __ DIODE SMD 3W 51V 556 SMB R108 DZ3 DZ4 DZ5 DZ6 DZ7 DZ8 6 525044 35 ZENER DIODE SMD 3W 12V 5 SMB 1 1 517900 85 IC SMD CMOS INVERTER SCHMITT HEX HC14A SS ames 625 210 2 5254518 1 ZENER 5 0 225 4 12 5 50723 1 525070 115 _ IC SMD CMOS OSCILLATOR DIVIDER 60MHZ SOIC8 SS ER 0 FTPIFTP2 FTPSFTPA FTPS 6 FUNTION FUNCTIONAL TEST PONT 1 52507028 CPLD PROGRAMMABLEXC9536 44PINVQFP SS 80 6 1 825070 105 _ IC SMD CMOS CPLD XC9572 PLCC44 SS 80 533 1 06 CONNECTOR MOLECMINLECE xs 1 _ 15105 75 IC SMD CMOS CONVERTER AD MPU 10 BIT SS 1 521 CONNECTOR MOLEXMINIPCBTAPINTN X6 X7X8 3 515128 185 IC OP AMP SMT QUAD HIGH PERF 33074D 1392 183 E Sn CONNECTOR MOLEX MINI PCB 16 9 1
120. DUPLEX RS232 COMMUNICATION LINK 695232 155 1 2 155 1 SHT 4 m 221k 5 5 043 D 16V SCAN vz 15V H LEDS gt 1 GREEN x ami E 5 _ 5 475 EE 5 89 6 He 5 ALE AS m2 1 EN LEDB CONTROL BOARD P OE VOLTAGE SUPPLIES amp S 475 d X28 axo 22 LEDIO 5 ES 3 6 TXA T GCAN 0 MODEL ED 24 12 5CAN SHT 1 lt l INT Vee 2 p252 on A 9 5 p24 3 03 asv o gt SYS RESET 2j wv A v SHT 1 RESE P23 60V 3W 8 c 82527 P22 15 STATUS i Los E SCAN 150 r SHT 1 WRH P27 p2ipe E ADDRILT ried BUSS L Jy ADO CLOCKOUT SHT 1 4 gt 3 apt READY MISO 28 4 ADORI3 2 02 wR wR R WL 15 STATUS LED 475 amp S 221 ADORIA BB DATAIBI 5 s a L 0 a08 CIRCUITRY Bd tc ADDRISI 2 DATAISI FO AD4 MOSI P11 AD9 3 DE 8 T BUSS H 1 ADDRIGI ADS PL2 AD10 4888 6 AD6 SCLK Bak 2 ADDRIBI DATAU121 ge v EA an PLA ADI2 05 acan D 18xrAL1 P15 A013 DATAS n MY 5 062 0815 159 pi 141 3 62V 62 16 2 XTAL
121. E CAPA OV 3 31 SHT 2 792057 H8 DATASI RAW 1 0881 1 0882 CAPA UV 5 10982 30 SHT 2 232 80 76 01 7 DATAM CST NORMAR FET_A 6 BLOCK 1 29 CLR CAP 38 36 o 2 1 0108 5 FAULT x30 gt SHT 4 4 1 01081 1 01082 p mm SHT 3 MC 8332GCP V25 m 221 5 221 g 1 01181 puoc 4 0182 SHT 4 MN n 24 amp o VHC140 MN ONT 8 1701281 1 01282 27 2 SHT 4 QUPULON shr a 50 FAULT INT 121 01381 1001382123 CRYSTAL SH X SHT 24 3 e 5203 SHT 3 13 1 01481 V 01482 22 DUTPUT UN asy 4 1 1K PWRDN_INT 14 1 01581 1 01582 21 SOFTST C ieej MN OUT 16 9536 1 016 220 DISABLE 455 r n SHT 4 1811001781 1701782 2 L S r 72 08 06 172 C65 CLK 8 43 11 pi 820pF 51 820pF 51V 820pF AS amp 700pF SHT 2 V O GCK1 3 50V 1 2W 50V 1 28 50V 50 15V CLK 44 yo yecK2 mL Eres I nj gp 7 2 6 n i lt GENERAL INFORMATION uem 1 SHT 4 1 0 6 100 20 C67 cn C68 cui 99 SHT 4 36 19 15 01 xm 01 Ax oa X zu 5 80 8 1537 0 20 Y 1 LED 10 50V sov 501 501 sov CAPACITORS UNLESS OTHERWISE SPECIFIED 143 Q 20 Y c A 16 V sla sso orsa ex
122. ED TEST PROCEDURE Remove input power to the V350 PRO machine Using a 5 16 nut driver remove the case wraparou nd cover Perform the Capacitor Discharge Procedure detailed earlier in this section Locate the power board and plugs J41 J42 and J43 Do not remove plugs from the power board See Figure F 4 Carefully apply the correct input voltage to the V350 PRO Carefully test for the correct voltages at the power board See Table F 3 7 If the 40VDC is low or not present at plug J41 check the rectifier bridge and C5 filter capacitor See Wiring Diagram Also per form the Auxiliary Transformer Test If any of the DC voltages are low or not present at plugs J42 or J43 the power board may be faulty Remove the input power to the V350 PRO Replace the case wraparound cover using a 5 16 nut driver Figure F 4 Power Board Plug Location J41 442 443 V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC O10 5 5 0 15 2 5 2 Return to Section Return to Master TOC Return to Master TOC F 27 F 27 TROUBLESHOOTING amp REPAIR POWER BOARD TEST CONTINUED CHECK POINT LOCATION POWER PC BOARD CONNECTOR PLUG J41 POWER BOARD CONNECTOR PLUG J42 POWER BOARD CONNECTOR PLUG J42 POWER PC BOARD CO
123. ED PER E3875 Return to Section TOC Return to Master TOC 11 00 04 I ie ES Return to Section TOC Return to Master TOC pap O O o 9 2 o 9 2 3 1911 BOARD BLANK REFERENCE INFORMATION ENCAPSULATE WITH E1 844 3 COATS BUY COMPLETE AS G3831 D 4 LAYER BOARD PER E3281 MAKES 2 BOARDS PER PANEL SEE E
124. ED WITH ITEM 5 SCHEMATIC REFERENCE 64017 1 0 BUY AS G4018 1C0 PART NUMBER IDENTIFICATION CODE BUY PER E3867 TEST PER E3964 RM THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY THE LINCOLN ELECTRIC COMPANY AND IS NOT TO BE REPRODUCED DISCLOSED OR USED WITHOUT THE EXPRESS WRITTEN PERMISSION OF THE LINCOLN ELECTRIC COMPANY CLEVELAND OHIO U S A X INFO Chg Sheet No 1 25 02 MANUFACTURING TOLERANCE PER E2056 DECIMALS IS 02 DESIGN INFORMATION DRAWNBY L11346 1 REFERENCE EQUIPMENT TYPE MISCELLANEOUS SPI REMOTE UI P C BOARD ASSEMBLY SCALEFULL 3 27 2001 DRAWNGNo G 4018 1 ONALLANGLES Is OF A DEGREE SUBJECT pt IDEE ENGINEER EdFurman SUPERSEDING WITH PUBLISHED APPROVED NOTE Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting PC Board repairs will invalidate your factory warranty Individual Printed Circuit Board Components are not available from Lincoln Electric This information is pro vided for reference only Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician Improper PC board repairs could result in damage to the LINCOLN ELECTRIC machine G 18 V350 PRO ELECTRICAL DIAGRAMS is SCHEMATIC SNUBBER PRINTED CIRCUIT BOARD Return to Section TO
125. EEDED 5 16 Nut Driver 1 4 Nut Driver 1 2 Nut driver 3 8 Nut Driver Channel Locks Return to Section TOC Return to Master TOC Flathead Screwdriver Phillips Head Screwdriver Hammer Crescent Wrench Q 7 5 Pliers Q 5 2 5 tc This procedure takes approximately 45 minutes to perform Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 F 88 F 88 TROUBLESHOOTING amp REPAIR CURRENT TRANSDUCER REMOVAL AND REPLACEMENT continued PROCEDURE 4 Using a 5 16 nut driver remove the four screws from the bottom and right side of the rear assem 1 Remove input power to the V350 PRO bly See Figure F 40 2 Using a 5 16 nut driver remove the case wrap around cover 3 Perform the Filter Capacitor Discharge Procedure detailed earlier in this section o Return to Master FIGURE F 40 CASE BACK SCREW LOCATIONS ojo E REAR 5 5 16 15 5 o T CL 0 SSS Return to Section Return to Master TOC Plastic C Nut 5 16 Mounting Screws Return to Section TOC Return to Master TOC V35
126. EET CONTAINS PROPRIETARY INFORMATION OWNED BY THE LINCOLN ELECTRIC COMPANY AND IS NOT TO BE REPRODUCED DISCLOSED OR USED WITHOUT THE EXPRESS WRITTEN PERMISSION OF THE LINCOLN ELECTRIC COMPANY CLEVELAND OHIO U S A 0 D TOLERAN MANUFACTURING TOLERANCE PER 20 6 o Cho Sheet No 5626 6 2 2000 DESIGN INFORMATION REFERENCE EQUIPMENT TYPE MISCELLANEOUS 8 4 2000C DRAWNBY Oi GREE p WITH PUBLISHED STANDARDS SUBJECT SPI DISPLAY P C BOARD ASSEMBLY ENGINEER SCAEFULL DATE5 II 20000RWNGNo 11130 3 APPROVED Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting PC Board repairs will invalidate your factory warranty Individual Printed Circuit Board Components are not available from Lincoln Electric This information is pro vided for reference only Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician Improper PC board repairs could result in damage to the machine LINCOLN V350 PRO es ELECTRICAL DIAGRAMS 6 13 SCHEMATIC LED SELECT PRINTED CIRCUIT BOARD 315 2742745 Return to Section Return to Master TOC Return to Master TOC 1 2 Return to Section LED_BANK_1 4 2 ee
127. ERMISSION OF THE LINCOLN ELECTRIC COMPANY CLEVELAND OHIO U S A MANUFACTURING TOLERANCE PER EX 2 DESIGN INFORMATION REFERENCE EQUIPMENT TYPE INVERTER WELDERS ON 3 PLACE DECIMALS IS 002 DRAWN BY ON ALL ANGLES IS 5 OF A DEGREE SELECT PC BD AS BLY MATERIAL TOLERANCE t TO AGREE ENGINEER Craig APPROVED SCALEFUL DATE321 2001 DRAWNGNo 19875 1 EN 166 Return to Section TOC Return to Master TOC NOTE Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting PC Board repairs will invalidate your factory warranty Individual Printed Circuit Board Components not available from Lincoln Electric This information is pro vided for reference only Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician Improper PC board repairs could result in damage to the LINCOLN amp i LINCOLN machine V350 PRO es ELECTRICAL DIAGRAMS gt SCHEMATIC LED POTENTIOMETER PRINTED CIRCUIT BOARD Return to Section Return to Master TOC zi S1 J61 SWITCH 5 e 15V 161 45 voc Va Return to Section Return to Master TOC POT_SUPPLY VDC 148 12 161 QOOOOOQO0000000000
128. ETAL FILM 1 10W 12 1K 1 S0805 1 EPIREMOTE UIRC BOARD BLANK R7 1 S25000 26708MT RESISTOR SMD METAL FILM 1 10W 2670HMS 1 S0805 2 ROTTNE TRAY R8 RORIORI R12 5 525004 24305 RESISTOR SMD 1W 2430HMS 1 3 2 15002580 SELF TAPPING SCREW R13 R14 R15 R16 R17 5 518380 14 THERMISTOR PTC SOOOHMS 28mA us RUE R18 R19 2 525000 33205 RESISTOR SMD METAL FILM 1 10W 3320HMS 1 S0805 ENT a are eae 8 525000 47515 RESISTOR SMD METAL FILM 1 10W 4 75K 1 S0B05 ae 7 1 E aoe ae R22 R23 R24 R36 R37 RS 10 525000 10025 RESISTOR SMD METAL FILM 1 10W 10 0K 1 0805 PROGRAM X2 to 250K Hz RAG RAT AS FG icr R31 R32 2 525000 22105 RESISTOR SMD METAL FILM 1 10W 2210HMS 1 50805 FOR ITEMS BELOW REFER TO ELECTRONIC COMPONENTS DATABASE FOR COMPONENT SPECIFICATIONS R33 1 525000 10006 RESISTOR SMD METAL FILM 1 10W 1000HMS 1 S0805 C1 02 03 04 05 06 07 08 08 44 525020 35 CAPACITOR SMD CERAMIC D TMF 50V 10 5 X7R 0805 R34 R35 2 525008 10025 RESISTOR SMD PREC MF 1 10W 10 0K 0 5 5 50805 loo 01015 R50 R51 R52 R53 R64 Rb5 12 525008 47515 RESISTOR SMD PREC MF 1 10W A 75K 0 596 S0805 c16 c17 c18 c19 c20 c21 R56 R57 R59 R59 ROO RET C22 C23 C24 C25 C26 C27 R62 R63 R64 R65 R66 R67 8 525001 12115 RESISTOR SMD 1 21K 1 AW 1206 T TR 28 29 030 231 32 033 R71 R72 34 35 036 037 048 49 R68 R69 R70 3 525000 26715
129. F MACHINE LEGEND TRANSDUCER 7117 904 S338 ALL MACHINES NOTES N D INPUT POWER LINE FILTER IS PRESENT ONLY OoPTION 1 FOR MACHINES WITH RED BLACK AND WHITE POWER CORDS LEFT SIDE OF MACHINE ON CE MODELS COMPONENT OUTLINE FOR SINGLE PHASE INPUT CONNECT GREEN LEAD TO GROUND PER NATIONAL ELECTRICAL CODE SINCE COMPONENTS OR CIRCUITRY OF A PRINTED CIRCUIT BOARD MAY CHANGE WITHOUT AFFECTING MODELS MOV s ARE IN THE INPUT POWER CONNECT BLACK AND WHITE LEADS TO SUPPLY CIRCUIT THE INTERCHANGEABILITY OF A COMPLETE BOARD THIS DIAGRAM MAY NOT SHOW THE EXACT m WRAP RED LEAD WITH TAPE TO PROVIDE 600V INSULATION COMPONENTS OR CIRCUITRY HAVING A COMMON CODE NUMBER LINE FILTER FOR THREE PHASE INPUT CONNECT GREEN LEAD TO GROUND PER NATIONAL ELECTRIC CODE N C PLACE A LEAD ON APPROPRIATE CONNECTION FOR INPUT VOLTAGE TE Aam m m CONNECT BLACK RED amp WHITE LEADS TO SUPPLY CIRCUIT CONNECTION SHOWN IS FOR 550 575V OPERATION CE MODELS ONLY GO TO 440VAC J332 JM4 B7 31 P55 J9 J42 00 01 n 2 FOR MACHINES WITH BROWN BLACK AND BLUE POWER CORDS EEE FOR SINGLE PHASE INPUT CONNECT GREEN YELLOW LEAD TO GROUND PER NATIONAL ELECTRICAL CODE TOP CENTER 25 o CONNECT BLUE BROWN LEADS SUPPLY CIRCUIT FANSNROUD CASEFRONT BASE Soe 888 WRAP BLACK LEAD WITH PROVIDE 600V INSULATION PROTECTIVE BONDING CIRCUIT 1 15 e
130. HE INTERCHANGEABILITY OF A COMPLETE BOARD THIS DIAGRAM MAY ON ALL ANGLES IS_t 5 OF DEGREE SCALE NONE Em NOT SHOW THE EXACT COMPONENTS OR CIRCUITRY OF CONTROLS HAVING COMMON CODE MATERIAL TOLERANCE TO AGREE DR Date _08 02 2000 chk SUP S D G No G3789 100 NUMBER WITH PUBLISHED STANDARDS 4 72 m NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual V350 PRO ELECTRICAL DIAGRAMS os SCHEMATIC DIGITAL CONTROL PC BOARD 3
131. JO 5 5 0 gt 2 2 EIS 2 1 Return to Section Return to Master TOC Return to Master TOC F 91 21 22 23 24 25 26 27 28 29 F 91 TROUBLESHOOTING amp REPAIR CURRENT TRANSDUCER REMOVAL AND REPLACEMENT continued Replace the current transducer Replace the two 3 8 mounting nuts previously removed Reconnect plug J90 to the current transducer Replace any necessary cable ties previously cut From the rear of the machine replace the heavy flex lead to the bottom of the output diode heatsink assembly using a 1 2 wrench Note Don t forget to include all washers Replace the output diode heatsink assembly pre viously removed using a 3 8 wrench Note Be sure to place insulation in its original location Replace leads X2 20 X4 40 previously removed from the two output diode modules Torque to 30 40 inch 16 Perform the Snubber Board Replacement The rear of the machine may now be placed back into its original position V350 PRO 30 31 32 33 34 35 36 37 Using a 3 8 wrench replace leads 202 203 206 and 207A previously removed from the reconnect switches Tighten the metal nut previously removed from the inside of the rear wall on the back of the machine Channel locks may be necessary Replace the large plastic nut from around input power line located at the back of the m
132. Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH C 12 201 uonoes 901 uumeg 201 uonoes DOL uonoes Section D 1 Section D 1 TABLE OF CONTENTS MAINTENANCE LM Section D Capacitor Discharge D 2 ViSUAIINSPOCU OM mem D 2 Routine 2 Return to Master Periodic Maintenance 1 1 1 4 D 2 Major Component Locations enhn ER e ER FEE RR ERR PR nna FER na D 3 Return to Master TOC Q 7 5 Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC O10 515 0 gt 218 5 2 a Return to Section Return to Master TOC Return to Master TOC D 2 D 2 MAINTENANCE A WARNING Have qualified personnel do the maintenance work Always use the greatest care when working near moving parts Do not put your hands near the cooling blower fan If a problem cannot be corrected by following the instructions take the mac
133. L 0105 d 2 0106 d 2E 0107 Ui 4 DSP READY __ 19 120 DSP_MP 07 02 02 024 02A 02A gt 4 Qe 10119 1 0120 70V 70V 70V 70V TOV 1 EU PSWI amp l 570 208 3 3 3 3 3 3 PSWI7 Ve TPULO 6 1 Tuos gt sit oR vi En R223 R262 Bg MU 100 332 4 hs CE 83 R224 R A sla 100 5263 6 4 AS 85 R240 R264 a 1 M 100 1 8 HC245 hz lus B 7 B7 R226 R265 M 100 332 x R227 2 ET 10 3321 1766 RZ 01028 5718267 8 A 5 I 0 12 13 M m x10 RB6 4 R83 B GENERAL INFORMATION LAST No USED l C47 097 C96 C98 C100 o 175 175 510 01 01 01 VHCL4D ELECTRICAL SYMBOLS PER 1537 35V 35V 50V 50V 50V D45 CAPACITORS MFD 022 50V UNLESS OTHERWISE SPECIFIED 76 53 78 105 130156 163 208 51V 2 RESISTORS Ohms 1 4W UNLESS OTHERWISE SPECIFIED LABELS VCC bo 1 24 DIODES 1A 400V UNLESS OTHERWISE SPECIFIED x18 x2 y 3 A SUPPLY VOLTAGE NET 4 cc D 0 XCS20 208 10 POWER SUPPLY SQURCE POINT E 520 TMS3Z0F240 1 1325 38 51 66 79 91103118 131143158170 182 195 3 1420 29 46 59 61 71 92 104 113 120 87 x33 01 COMMON CONNECTION gt HC245 50 FILENAME 63789 10 1 1 FRAME CONNECTION o Ce os CE THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY THE LINCOLN ELECTRIC CO
134. LECTRIC COMPANY CLEVELAND OHIO U S A R P D TOLERAN Chg Sheet No ING TOLERANCE PER E2056 g Sheet No DESIGN INFORMATION REFERENCE EQUIPMENT TYPE INVERTER WELDERS ON 2 PLACE DECIMALS IS 02 1 25 2002 ON 3 PLACE DECIMALS 15 002 DRAWNBY LL ANGLES IS 5 OF A DEGREE SUBJECT LED POT P C BOARD ASSEMBLY ON A F MATERIAL TOLERANCE um TO AGREE ENGINEER Craig Hejl ISUPERSEDING egeris spore APPROVED SCALEFULL ___ 3 9 2001 DRAWNGNo 19874 1 UN MANUFACTURI Return to Section TOC Return to Master TOC NOTE Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting PC Board repairs will invalidate your factory warranty Individual Printed Circuit Board Components not available from Lincoln Electric This information is pro vided for reference only Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician Improper PC board repairs could result in damage to the LINCOLN amp i TETI machine V350 PRO 6 17 0 17 SCHEMATIC SPI REMOTE PRINTED CIRCUIT BOARD ELECTRICAL DIAGRAMS SPI CONNECTIONS LOCAL LED NTERFACE m ACL4AD di MODE LED 1 2 MODE LED 2 di 1 ir 3x x13 R65 1 E
135. LECTRONC FILE FORADDITIONAL INFORMATION TEST PER E3817 SW PANEL SIZE E1911 FOR PARTS ORDERS AND SUBSIDIARY ORDERS INCLUDE 1 S25191 PRINT AND 1 112837 1 du E Jem pero ON ALL ANGLES IS 5 OF A DEGREE SUBJECT SWITCH BOARD ASSEMBLY Mages COO ROT SCALE THIS DRAWING 15 25 ems SCALE FULL DATE II 18 99_DRAWNGNo G 3830 1 Return to Section TOC Return to Master TOC NOTE Lincoln Electric assumes no responsibility for liablilities resulting from board level troubleshooting PC Board repairs will invalidate your factory warranty Individual Printed Circuit Board Components not available from Lincoln Electric This information is pro vided for reference only Lincoln Electric discourages board level troubleshooting and repair since it may compromise the quality of the design and may result in danger to the Machine Operator or Technician Improper PC board repairs could result in damage to the LINCOLN amp i LINCOLN machine V350 PRO G 11 V350 PRO SOLIT 2 HI 00 90 77 3190 5 37925 1077 94 JILVW3H2JS 994 14510 767 OIHO ONV 134319 S13NVd 185 03141 03 214124114 N IOONI 1 702 21412313 430 NOISSIWH3d SS3HdX3 JHL LNOHLIM Q3Sn 035012610 420004434 38 OL LON SI ANY 8 2 GNNOXS Hlava 02 513193713 102 11 JHL 1123NNO2 NOLLO3NNOO
136. LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC Q o 5 B tc Return to Section TOC Return to Master TOC o 0 5 F 66 F 66 TROUBLESHOOTING amp REPAIR ADVANCED PROCESS PANEL REMOVAL AND REPLACEMENT continued FIGURE 27 CASE FRONT AMPS VOLTS CONTROL WELD TERMINALS LOCAL ON SELECT SELECT 5 16 Screws Om Adjust Knob Select Knob QD D 9 Remove plug J33 from the remote board See the Wiring Diagram 10 Open the cover of the weld mode display on the front of the machine 11 Using a 5 16 nut driver remove the three 5 16 screws as shown in Figure F 27 12 Place both knobs in the six o clock position 13 Using small flathead screwdriver loosen the screw in the Select knob and the Adjust knob knobs should slide off of their shafts See Figure F 28 14 Using a 9 16 wrench remove the nuts and their washers behind the two knobs previously removed 15 Perform the Remote Board Removal Procedure Start at step 10 16 Using a phillips head screwdriver remove the two phillips head mounting screws at the bot tom
137. NNECTOR PLUG J42 POWER BOARD CONNECTOR PLUG J43 POWER BOARD CONNECTOR PLUG J43 POWER BOARD CONNECTOR PLUG J43 Table F 3 Power Board Voltage Checks TEST DESCRIPTION CHECK 40VDC SUPPLY FROM RECT BRIDGE TO POWER BD CHECK 15VDC SUPPLY FROM POWER BOARD CHECK 5VDC SUPPLY FROM POWER PC BOARD CHECK 15VDC SUPPLY FROM POWER PC BOARD CHECK 5VDC SPI SUPPLY FROM POWER BOARD CHECK 5VDC RS232 SUPPLY FROM POWER PC BOARD CHECK 15VDC SPI SUPPLY FROM POWER BOARD NORMAL ACCEPTABLE Ee VOLTAGE OR IDENTITY READING 65 38 42 VDC 66 412 15 VDC 410 408 5 VDC 410 CONNECTOR PLUG PIN NO 403 5 VDC 401 a 406 5 VDC 406 6 12 L 402 3 411 15 VDC 410 J 3 401 402 401 V350 PRO LINCOLN 5 F 28 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 28 201 uonoes 901 uumeg 201 uonoes DOL uonoes F 29 F 29 TROUBLESHOOTING amp REPAIR OUTPUT DIODE MODULES TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may resul
138. O THE V350 PRO ACROSS THE ARC WITH OPTIONAL 6 PIN K441 1 REMOTE CON TROL 1 Remove input power to the V350 PRO 2 Connect the electrode cable to the output terminal of polarity required by the electrode Connect the work lead to the other terminal Welding cable must be sized for current and duty cycle of the application 3 Attach the single lead from the LN 25 control box to the work using the spring clip on the end of the lead This is only a control lead it carries no welding current 4 Set the voltmeter switch to the electrode polarity chosen 5 Set CONTROL SELECT to REMOTE 6 Set the MODE to the CV WIRE position 7 Set WELD TERMINALS SELECT to the position If you are using an LN 25 without an internal con tactor the electrode will be HOT when the V350 PRO is energized 8 Set the ARC CONTROL to the O position and then adjust to suit Figure C 1 V350 PRO LN 25 ACROSS THE ARC CONNECTION DIAGRAM 6 pin Amphenol Optional K444 1 Remote Control LN 25 Wire Feeder Work Clip Lead To Work Electrode Cable NOTE Illustration shows electrode connected for negative polarity V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC o 5 B tc Return to Section TOC Return to Master TOC Q 5
139. ON ACTION EN 47 Electrical glitch on the Possibly caused by an There may be a problem V F signals from the main switch board to the control board external electrical noise or signal level Make sure the V350 Pro is grounded correctly The machine is self clearing when condition ceases with the V F signals from the main switch board to the control board Perform Main Switch Perform the Board Test The control board may be faulty bad node The selected weld mode does not exist in the weld table that is presently loaded in the machine Press the Mode Select button to select a different welding mode If new software was just installed try reinstalling the software or put the original software back Perform the Board Test Perform the SPI Cable Resistance and Voltage The control board may be faulty NOTE If more than one fault message is being displayed perform all the checks for the faults before replacing the printed circuit board V350 PRO LINCOLN 5 F 14 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 14 201 uonoes DOL uonoes uumeg 201 uonoes DOL uonoes Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o
140. ON OF THE LN 10 TO THE V350 PRO USING THE K1505 CONTROL CABLE NOTE AN LN 10 CAN ONLY BE USED WITH A FAC TORY OR CE VERSION OF THE V350 PRO 1 Remove input power to the V350 PRO 2 Connect the K1505 control cable from the LN 10 10 to the Invertec 24 42VAC 14 pin amphenol con necter on the rear of the V350 PRO 3 Connect the electrode cable to the output terminal of polarity required by the electrode Connect the work lead to the other terminal 4 Set the meter polarity switch on the front of the V350 PRO to coincide with wire feeder polarity used 5 Set CONTROL SELECT to REMOTE 6 Set the MODE to the CV WIRE position 7 Set the WELD TERMINALS SELECT to the REMOTE position Set the ARC CONTROL to the 0 position and then adjust to suit Set wire feed speed and voltage at the LN 10 NOTE The voltage set point displayed on the V350 PRO should be ignored when operating in the remote control mode with the LN 10 See the LN 10 manual for details on accessing the control DIP switch The control DIP switch inside the LN 10 should be set per the instructions in the LN 10 manual Figure C 8 LN 10 V350 PRO 14 PIN TO LN 10 AMPHENOL 24 42 1505 WORK V350 PRO LINCOLN 5 ELECTRODE CABLE TO LN 10 12 5 LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901
141. OUTPUT RECTIFIER MODULES REMOVAL AND REPLACEMENT continued Under the copper plate previously removed there is an allen bolt Remove it using a 9 64 allen wrench See Figure F 39 Using a 7 16 socket remove the mounting bolts at the top and bottom of the modules See Figure F 39 The output rectifier modules are ready for removal and or replacement Before replacing the diode module apply a thin even coat of Penetrox A 13 heatsink compound to the bottom surface of the diode module Note Keep the compound away from the mounting holes Press the module firmly against the sink while aligning the mounting holes Insert each outer screw through a spring washer and then a plain washer and into the holes Start threading all three screws into the heat sink 2 or 3 turns by hand 13 14 15 16 15 16 17 screw threads may catch on the threads of the heat sink so be sure to get the face of the screw into contact with the surface of the module using just hand torque Using a 7 16 socket tighten each mounting bolt to between 5 and 10 inch pounds Tighten the center allen screw to between 12 and 18 inch pounds Tighten each mounting bolt again 30 to 40 inch pounds this time Replace leads X2 X4 20 40 to their original terminals in their proper positions Torque bolts to 30 40 Inch Pounds Perform the Snubber Board Replacement Procedure detailed earlier in this section
142. Power is grounded correctly The machine is self clearing when There may be a problem condition ceases with the primary current sensors CT located on the main switch board See the wiring diagram The control board may be faulty 43 Capacitor banks A Make sure the recon There may be a problem lower and B upper nect switches are con with the V F signals from are not balanced figured for the input the main switch board to voltage being applied to the control board the machine The machine is self clearing Perform the Main Switch when condition ceases The capacitor s may be faulty Check and replace if necessary 44 The machine has Make sure the V350 Pro Perform the Power detected a fault in the is grounded correctly central processing unit CPU The machine is self clearing when condition ceases The control board or associated wiring may be faulty See the wiring diagram NOTE If more than one fault message is being displayed perform all the checks for the faults before replacing the printed circuit board V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC O10 E 5 0 gt 2 2 5 2 Return to Section Return to Master TOC F 13 TROUBLESHOOTING amp REPAIR F 13 FAULT CODES DESCRIPTION CORRECTIVE SERVICE FACILITY RRECTIVE DEFINITI
143. R ITEMS BELOW REFER TO ELECTRONIC COMPONENTS DATABASE FOR COMPONENT SPECIFICATIONS BLANK PART NUMBER M19874 A J61 1 519365 15 CONNECTOR PCB WW MALE RT L 15 PIN LED1 LED2 LED3 LED4 LED5 T13657 11 LED T 1 3 4 RED HIGH INTENSITY R1 R2 19366 POT ST 0 5W 10K 10 LINEAR 51 1 T13381 17 SWITCH PUSHBUTTON SPST GREEN W BLACK RESISTANCE OHMS Return to Section TOC Return to Master TOC E MANUFACTURE AS 19874 1 2 Sys IDENTIFICATION CODE Return to Master TOC Return to Section TOC PART NO ENCAPSULATE WITH E1844 2 COATS BRUSH COAT ACCEPTABLE NOTES N A DO NOT COAT WITH ENCAPSULATION MATERIAL N B THERE MUST NOT BE MORE THAN A 010 GAP BETWEEN SPACER amp LED OR BETWEEN SPACER amp P C BOARD ENCAPSULATE P C BOARD SPACERS amp LOWER HALF OF LED LEDS MUST BE PERPENDICULAR WITH P C BOARD e 218 5 2 l x ENCAPSULATE AROUND BASE OF COMPONENT N D COAT EXTERNAL PINS WITH ENCAPSULATION MATERIAL FOR PARTS ORDERS ONLY SCHEMATIC REFERENCE 525258 1 1 ESCA THIS SHEET CONTAINS PROPRIETARY INFORMATION OWNED BY THE LINCOLN ELECTRIC COMPANY AND IS NOT TO BE REPRODUCED DISCLOSED OR USED WITHOUT THE EXPRESS WRITTEN PERMISSION OF THE LINCOLN E
144. Return to Master TOC MATERIALS NEEDED 5 16 Nut Driver Flathead Screwdriver 7 16 mm Socket 3 16 Allen Wrench 3 8 Nut Driver This procedure takes approximately 35 minutes to perform 5 5 0 815 218 5 2 a Return to Section Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o E 5 Return to Section Return to Master TOC o 5 F 60 F 60 TROUBLESHOOTING amp REPAIR MAIN SWITCH BOARD REMOVAL amp REPLACEMENT continued FIGURE F 22 MAIN SWITCH BOARD LEAD LOCATIONS PROCEDURE 1 Remove the input power to the V350 PRO 2 Using a 5 16 nut driver remove the case wrap around cover 3 Perform the Input Filter Capacitor Discharge detailed earlier in this section CAUTION Observe static precautions detailed Board Troubleshooting Procedures at the beginning of this section Failure to do so can result in perma nent damage to equipment 4 Locate the main switch board and all associat ed plug and lead connections See figure F 22 See Wiring Diagram V350 PRO Using a 5 16 and 3 8 nut driver remove the input lead shield from the area at the bottom of the main switch board Using a 7 16 socket rem
145. Return to Master TOC Return to Section TOC Return to Master TOC o 5 tc Return to Section TOC Return to Master TOC Q 5 12 12 OPERATION PULSE WELDING GMAW P The pulsed arc process is by definition a spray trans fer process wherein spray transfer occurs in pulses at regularly spaced intervals In the time between pulses the welding current is reduced and no metal transfer occurs Pulsed arc transfer is obtained by operating a power source between low and high current levels The high current level or pulse forces an electrode drop to the workpiece The low current level or background main tains the arc between pulses See Figure below Pulsed MIG is an advanced form of welding that takes the best of all the other forms of transfer while minimiz ing or eliminating their disadvantages Unlike short cir cuit pulsed MIG does not create spatter or run the risk of cold lapping The welding positions in pulsed MIG are not limited as they are with globular or spray and its wire use is definitely more efficient Unlike the spray arc process pulsing offers controlled heat input that allows better welding on thin materials lower wire feed speeds and leads to less distortion and improved overall quality and appearance This is especially important with stain less nickel and other alloys that a
146. Return to Section Return to Master TOC Q 7 5 5 OPERATION 7A ADVANCED PROCESS PANEL See Figure B 2 To program Welding modes SELECT knob is used to Scroll through all Welding modes The MEMORY but ton is used to store and access Welding modes into locations M1 thru M8 Modes In addition to the 5 welding modes described in SEC TION 7 the Advanced Process Panel allows you to select the Following additional modes Power Mode In the Power Mode The work point will be in the Volts window The Amp window will have CP displayed indicating Constant Power Once current starts flowing and during the 5 second Hold feature the displays will show Volts and Amps respectively Refer to the detailed expla nation at the end of this section Gouge Air Carbon Arc Cutting CAC A is a physical means of removing base metal or weld metal by using a car bon electrode an electric arc and compressed air Pulsed Modes In Pulse Modes The work point will be in the Amps window and should be set close to the wire feed speed of the wire feeder in inches per minute The Volts window will SPd displayed indicating Wire Feed Speed Once current starts flowing and during the 5 second Hold feature the displays will show amps and volts Pulse Mode features that are displayed while select ing a Welding pulse mode are listed below Steel 030 035
147. Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 tc Return to Section TOC o 5 Return to Master TOC F 70 F 70 TROUBLESHOOTING amp REPAIR REMOTE BOARD REMOVAL AND REPLACEMENT continued PROCEDURE 3 Perform the Input Filter Capacitor Discharge 1 Remove input power to the V350 PRO Procedure detailed earlier in this section 2 Using a 5 16 nut driver remove the case wrap 4 Locate the remote board behind the front panel of around cover the machine See Figure F 29 FIGURE F 29 REMOTE BOARD LOCATION Remote Board Mode Board or Advanced Process Board V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o o 5 tc Return to Section TOC Return to Master TOC Q 7 5 71 71 TROUBLESHOOTING REPAIR REMOTE BOARD REMOVAL AND REPLACEMENT continued 5 Using a 5 16 nut driver remove the two screws from the bottom front of the machine See Figure F 30 6 Using a flat head screwdriver remove the two screws and their washers from around the input power switch See Figure F 30
148. Return to Section TOC Return to Master TOC o pe 2 5 tc Return to Section TOC Return to Master TOC Q 5 7 7 TROUBLESHOOTING amp REPAIR Observe Safety Guidelines detailed in the beginning of this manual PROBLEMS SYMPTOMS The machine s welding output is very high and uncontrollable POSSIBLE AREAS OF MISADJUSTMENT S FUNCTION PROBLEMS Put the Control Select in the Local position If the problem is solved the remote control device or associated circuitry may be faulty Check for proper current and voltage calibration TROUBLESHOOTING GUIDE RECOMMENDED COURSE OF ACTION 1 Perform the Transducer Test If the output is normal when the Control Select is in the Local position but the output is very high in the Remote position the remote board may be faulty Perform SPI Cable Resistance and Voltage Test The control board may be faulty The Weld Mode Select does not function properly Refer to Operation Section of this manual for normal operation characteristics NOTE The mode panel is not pre sent if the advanced process panel is installed Check for loose or faulty plug connections between the con trol board and the mode select panel See the wiring diagram Perform the SPI Cable Resistance and Voltage Test The Mode Select Pan
149. SOLDER COVERS ENTIRE EYELET BODY AND ALL AROUND EYELET ON COPPER SIDE ONLY NO ICICLES OR SOLDER BLOBS PERMITTED X1 X4 15128 10 VOLTAGE REF ADJ PRECISION 4311 N G AFTER SOLDERING INSPECT POWER TERMINAL CONNECTIONS PER E1880 515128 18 OP AMP QUAD 33074 NH THIS AREA TO BE COVERED ON COMPONENT SIDE OF BOARD WITH SEALANT PRIOR TO ENCAPSULATION MATERIAL MUST BE APPLIED FROM TOP TO COMPLETELY FILL TO UNDERSIDE OF DEVICE THEN APPLY SEALANT AROUND BASE OF DEVICE NO DESCRIPTION THIS AREA TO BE COVERED ON OPPOSITE COMPONENT SIDE OF BOARD WITH BOARD BLANK ITEM 8 PRIOR TO ENCAPSULATION DO NOT COAT WITH ENCAPSULATION MATERIAL ON THE TOP SURFACES NOR THE THREADS CAPACITORS MFD VOLTS SEALANT HEIGHT BETWEEN MODULES NOT EXCEED 17 INDUCTANCE HENRIES ERU RRE RNR ITEM 5 MUST HAVE FULL CONTACT WITH ITEM 3 ON THE CONTACT SURFACE RESISTOR OHMS 5 524866 POWER TERMINAL 8201 8208 THE TWO MODULES ITEM 2 MUST BE MATCHED THE LAST TWO DIGITS OF THEIR 11 ____ _ __ SORT CODES MUST BE IDENTICAL SMALL PC BOARD HOLES TO BE FREE OF ENCAPSULATION MATERIAL FOR SEALANT CEN TERED 40 MINIMUM DIAMETER AND 45 MAXIMUM DIAMETER 4 HOLES TO BE CENTERED WITHIN 06 DO NOT GET ON MATING SURFACES MASK PER SCHEMATIC REFERENCE L11487 1D0 APPROPRIATE MANUFACTURING WORK INSTRUCTIONS ELECTRONIC MODULES TO BE ASSEMBLED AND ENCAPSULAT
150. SP 1900015 vos DSP Al E 70 TMROIR IOPB6 gH L4 SCK3 591 059 1 088 B8 SPIMOSI DSP 010 17017 XCS20 208 17034 35 OSP_AI2 XINT3 10 TMRCLK IOPB7 MISO3 61 voe Vos L BSCK 1917019 1032B2 DSP AGI rina H4 ac ES 6217062 1 085 BS 20 1 020 1 031 BL OSP_RESET Pl SUED T FPGA_INT 18 Ba SPICS2 08 5 alioz 1 039 80 OSP_AISI SHT SS spisimo io 45 POT CS 64 XCS20 208 3 BMISO 5 05 22 29 DSP_AI6 PORESET spisomi io 48 5V SHT 3 1 064 1 083 1 022 1 029 CLK 8 5 49 DISABLE_455 671 067 10082 2 INT_1_3PH si 4 231 023 17028 28 DSP AUI SHT 5V 5 POS SHT 1 FAN_CONTROL 691 068 1 081 BL MSELL SHT 3 24 1 021 102101 08 113 3i xz sPsTE 0 3 1 hs SHT 1 THERMAL LED 69 1 069 1 080 BO MSELO SHT 3 oo in STT_ON 7 05 33 5 64 we 8 ti 17070 1 076 sur 3 05 00 151 50 MISC 72 15 MISCO 05 1151 EMUD XE AOPC2 7 7 SHT 1 1 072 1 075 SHT 1 3 1 25128 SHT 3 1317073 l SHT 1 Eni 3 M 052 00 9 5 rue s CAPL GEPL IDPCA SHT 1 05 0 T ADEST MP Mp AC CAP2 0EP2 I0PCS SHT 1 1 ______05 0 54 A 05 2 DSP AUZI 5 el 5 8 e 2 05 CAP3 IOPC6 SHT 1 05 013 m RB S 5 8 zi VREFLO CAPL IDPCT SHT 1
151. SUR 1521 0152 DATASI 186 gig 1702061206 82 ADCINI3 PWM7 CMP7 10PB0 199 STI ON sms EP n SPLCS 15 59 von n ADDRISI 187 v oig 1 0205 98 81 1 191 MT BAD SHT 1 SPI_CSO 1 0161 1 0169 169 ADDRI6L 188 0188 170204 204 ADDRIZI 80 PwM9 CMP9 10PB2 192 SHT 1 1 0162 1 0168 168 189 0189 1 0201 201 ADDR 3I V 1 5320 240 163 1 0163 1 0167 167 SHT 1 DATAI 1901 9199 170200 200 05 0 7 Esas 10166 166 SHT 1 DATAIO 191 1 1 0199 199 XCS20 208 ADDRI121 1931 1 9193 170198 198 2 195194 1 0197 297 DATAILAI Ve DATAU3 _ 196 0196 XCS20 208 E AD DATAIO 13 AD DATAIQ 131 5 gt to SHT 1 1 03 1 045 AD DATAIBI Oleg als SHT 1 AD DATACTI SHT 1 SPILLATCHT 51 05 ALa o gt 059 06 08 AD DATAISI By ey AD DATADI idis vos PS PSWISI DSP DI5 yee vou lt 9 101 21 0047 17094 P PSWI6I 05 1 010 17049 0 _AD DATAI31_ 195 AD DATAI11 48 7048 1709323 5 SEDAI von 1 037 27 AD DATAUZI E em TZPIN TICM IOPOL 28 as SEL_I_ON 57 057 0080 P0 SPICS3 1014 1o36 E DS AM gls m x18 als XINT2 10 5 a 5 4 TALES E oss S Biss D
152. T ATTRIBUTE Flathead Screws Phillips Head Screws 5 16 Screws 5 Using a 5 16 nut driver remove the two 8 The front of the machine may now gently be screws from the bottom of the front of the pulled forward to gain access to the display machine See Figure F 21 Board Note The front of the machine cannot be removed completely only pulled forward a 6 Using a flat head screwdriver remove the two few inches screws and their washers from above and below the input power switch See Figure 9 The display board is now accessible to 21 replace 7 Using a phillips head screwdriver remove the four screws from around the two welder out put terminals on the front of the machine See Figure F 21 V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Q o E 5 Return to Section Return to Master TOC o 5 58 10 11 12 13 14 F 58 TROUBLESHOOTING amp REPAIR DISPLAY BOARD REMOVAL amp REPLACEMENT continued Remove plug J37 from the display board See the Wiring Diagram Remove plug J3 originating from the control board located directly across from the display board See the Wiring Diagram Remove the display board Not
153. UT RECTIFIER MODULES olo Eg REMOVAL AND REPLACEMENT continued 55 9 3 PROCEDURE 5 1 Remove input power to the V350 PRO 5 Before the output rectifier modules can be 5 reached the Snubber Board Removal 9 E 2 Using a 5 16 nut driver remove the case wrap must be performed around cover 6 After the snubber board is removed remove the 3 Perform the Input Filter Capacitor Discharge four leads connected to the modules using a 3 16 Procedure detailed earlier in this section allen wrench These leads are X4 X2 20 40 Note their positions for reassembly 4 Locate the output diode modules located behind the snubber board See figure F 38 7 Remove the copper plates from the tops of the modules FIGURE F 38 OUTPUT RECTIFIER MODULE LEAD LOCATIONS Return to Section TOC Return to Master TOC Output Diode Modules o 7 5 Q o 5 tc LEFT SIDE Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Q o 5 E 5 B Return to Section Return to Master TOC o 5 85 10 11 12 9 64 Allen 3 16 Allen F 85 TROUBLESHOOTING amp REPAIR
154. able from the LN 742 to the 14 pin MS style connector Connect the electrode cable to the output terminal of the polarity required by electrode Connect the work lead to the other terminal Set the meter polarity switch on the front of the Invertec to coincide with wire feeder polarity used The wire feeder will now display the welding volt age If a remote control such as K857 is to be used with the LN 742 the remote can be connected directly to the 6 pin MS style connector on the front of the Invertec or use a K864 adapter to connect the LN 742 and the remote to the 14 pin MS style connector Cobramatic Connection Instructions A Cobramatic can only be used with the Factory amp Advanced Process versions of the 350 Pro Turn the Invertec power switch off Connect the control cable from the Cobramatic to the 14 pin MS style connector Connect the electrode cable to the output terminal of the polarity required by electrode Connect the work lead to the other terminal Set the meter polarity switch on the front of the Invertec to coincide with wire feeder polarity used If a remote control such as K857 is to be used with the Cobramatic the remote can be connected directly to the 6 pin MS style connector on the front of the Invertec or use a K864 adapter to connect the cobramatic and the remote to the 14 pin MS style connector TIG Module K930 2 The TIG Module connects to the Factory and Advanced Process V350 Pro ve
155. able to a voltage test with the machine energized because this board can be damaged easily In addition it is dangerous to work on this board with the machine energized Return to Section TOC Return to Master TOC MATERIALS NEEDED Analog Volt Ohmmeter 5 16 in Wrench 7 16 in Wrench 5 5 0 815 218 5 2 a This procedure takes approximately 30 minutes to perform Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 18 18 TROUBLESHOOTING amp REPAIR MAIN SWITCH BOARD TEST continued FIGURE F 2 MAIN SWITCH BOARD LEAD LOCATIONS Return to Section TOC Return to Master TOC o 3 5 B Return to Master olo 55 8 2 0 2 cle TEST PROCEDURE E 5 1 Remove input power to the V350 PRO 4 Using a 7 16 wrench locate label and remove leads 201 202 203 204 205 206 207 and 2 Using a 5 16 nut driver remove the case 208 from the switch board Note lead and wraparound washer placement for reassembly Clear 3 Perform the Input Filter Capacitor Discharge leads Procedure detailed earlier in this section 5 Using the Analog ohmmeter perform the resis tance tests detailed in Table Refer to fig ure 2 for test point locations Note Test using an Analog ohmmeter on the Rx1 range 5 S Make sure the test probes are making electri rir cal
156. achine Replace the five leads to the reconnect panel in their proper locations Replace the two CB2 circuit breaker leads previ ously removed Using a 5 16 nut driver replace the four screws at the bottom and right side of the rear assembly Replace the case wraparound cover Perform the Voltage and Current Calibration LINCOLN 5 92 92 TROUBLESHOOTING AND REPAIR RETEST AFTER REPAIR Retest a machine If it is rejected under test for any reason that requires you to remove any part which could affect the machine s electrical characteristics If you repair or replace any electrical components Press and hold the MODE SELECT button or the MEMORY button if an advanced process panel is installed while applying power to the machine Rotate the output control knob until the display reads SPIdIAG Release the MODE SELECT button Test Expected Results ir qu Lft display Rt display Adjust the output control potentiometer to its highest oCP HI setting completely clockwise Adjust the output control potentiometer to its lowest oCP setting completely counterclockwise NOTE If a Standard Mode Select Paneli is not installed in the machine skip st 3 Adjust the hot start potentiometer to its highest setting L 2 Adjust the hot start potentiometer to its lowest setting Ai weld mode indicator LEDs should be off Press the NodE weld mode select push button to select
157. amp 11 Kk 2 INPUT ourPuri d V asv 5V a ADDRII 29 ap O gurpur2 amp cz cms dy m ADDRIZI 24 ay poo 2 DATA 2 RLO USAN wola 10 01 ZN AA 4 gt 7 gt ADDRI3I 2342 por Bt Fle t R5 13 5 2v ADDRILT 22 3 002 B3 21 YE alxlelxlelxlelslels lt lt ADDRISI E p03 5 DATAGI SHT 4 Sm Rab us N 16 2 a s a s Bs ADDAI6 EN oB DATAM 0 40V i r3 ADDRITI 19 6 pos 0 DATAISI 8 o PIC lt 2 lt 84 vonsYN xc B ADDRIBI 1845 Doe 2 DATAI6I 021 pes 12 030 F 89 CLK ADDRIS 8 m DATAUI 10 0K 100pF 7 FT 16 EXTAL CLKOUT SHT 4 AORA ag 007 DATATI 0 12 1000 oA s vale None 72 X 8a poor 140 058 400110 DATAIBI 3 3 2 7 30v 7 92 RESET 050141 150 ADDAI11 ato x5 82 DATAI9I lt INPUT OUTPUT 14 93 142 UST ADDRI12 5 BL 4 4 x 6 BERR Au Dato Ee 45 GND1 OUTPUT2 5 ax n Ke 80 vs 13 152 ADDRI13 1 2 poi B6 DATAILLI 01 2510 25 91 Db PPE Tev T 30v 50V 5 CL FREEZE 94 BERR 0507 PIPE Ay paiz Pc DATADA 515 T m id lt 8l FREEZE ps1 78 ADDRIASI thane DATAN 1321 79 103 R W ADDRI16 ais 001443 4
158. apacitor bank Make sure the reconnect There may bea problem B lower is over switches are configured with the V F signals from voltage for the input voltage the main switch board to being applied to the the control board machine The machine is self clearing when Perform Switch condition ceases Perform the Power The control board may be faulty 37 The soft start Turn the machine off and There may bea problem function failed back on to reset the machine with the V F signals from the main switch board to the control board Perform Switch Board Test Perform the Board Test The control board may be faulty NOTE If more than one fault message is being displayed perform all the checks for the faults before replacing the printed circuit board V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 tc Return to Section TOC Return to Master TOC Q 52 5 F 12 F 12 TROUBLESHOOTING amp REPAIR FAULT CODES DESCRIPTION CORRECTIVE SERVICE FACILITY CORRECTIVE DEFINITION ACTION ACTION 39 Electrical glitch on the Possibly caused by an Perform the Main Switch primary over current fault external electrical detector circuit noise or signal level Make sure the V350 Pro Perform the
159. arranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION The following procedure will aid the technician in removing the control board for maintenance or replacement MATERIALS NEEDED 5 16 Nut Driver 3 8 Nut Driver Flathead Screwdriver Phillips Head Screwdriver This procedure takes approximately 30 minutes to perform V350 PRO LINCOLN 5 F 51 F 52 F 52 TROUBLESHOOTING amp REPAIR CONTROL BOARD REMOVAL AND REPLACEMENT continued FIGURE F 16 CONTROL BOARD LOCATION Return to Section TOC Return to Master TOC ojo 5 55 PEN 15 2 Control Board PROCEDURE 1 Remove input power to the V350 PRO 4 Locate the control board behind the front panel of the machine See Figure F 16 2 Using a 5 16 nut driver remove the case wrap around cover 5 Using a 5 16 nut driver remove the two screws from the bottom of the front of the machine See 3 Perform the Input Filter Capacitor Discharge Figure 17 Procedure detailed earlier in this section FIGURE F 17 CASE FRONT SCREW REMOVAL
160. ated at 350 amps 60 duty cycle based on a 10 minute cycle It is also rated at 300 amps 100 duty cycle OPERATIONAL FEATURES and CONTROLS UPPER CONTROL PANEL 1 AMPS Meter Prior to STICK or TIG operation current flow the meter displays preset current value 2 amps or 3 whichever is greater Prior to CV operation the meter displays four dash es indicating non presettable AMPS During welding this meter displays actual average amps After welding the meter holds the actual current value for 5 seconds Output adjustment while in the hold period results in the prior to operation char acteristics stated above The displays blink indicat ing that the machine is in the Hold period 2 VOLT METER Prior to CV operation current flow the meter dis plays desired preset voltage value 5V Prior to STICK or TIG operation the meter displays the Open Circuit Voltage of the Power Source or four dashes if the output has not been turned on During welding this meter displays actual average volts After welding the meter holds the actual voltage value for 5 seconds The displays blink indicating that the machine is in the Hold period Output adjustment while in the hold period results in the prior to operation characteristics stated above 3 OUTPUT CONTROL Output control is conducted via a single turn poten tiometer Adjustment is indicated by the meters as stated a
161. board using a 3 8 nut driver Board is ready for removal Remove the power board 10 11 12 Replace with new power board Secure the new power board into its proper posi tion with the three 3 8 nuts previously removed Replace the three plugs previously removed Plugs J41 J42 J43 Replace the case wraparound cover FIGURE F 35 POWER BOARD LEAD LOCATION J42 J41 J43 m V350 PRO LINCOLN 5 F 78 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 78 201 uonoes 901 uumeg 201 uonoes DOL uonoes F 79 F 79 TROUBLESHOOTING amp REPAIR INPUT RECTIFIER REMOVAL AND REPLACEMENT WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual Return to Section TOC Return to Master TOC If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical
162. bove When in TIG modes this control sets the maximum welding current Full depression of a foot or hand Amptrol results in the preset level of current 4 WELD TERMINALS REMOTE ON Two status lights indicate the location of trigger con trol as determined by the WELD TERMINALS push button If trigger control is local weld terminals on the ON display will be lit f trigger control is remote weld terminals remotely controlled the REMOTE display will be lit V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 tc Return to Section TOC Return to Master TOC Q 5 B 3 OPERATION unit will power up in pre determined preferred trigger modes STICK CV REMOTE TIG REMOTE if remote output controls are attached to the machine TIG ON if remote output controls are not attached to the machine For all versions these trigger modes can be over ridden switched with the WELD TERMINALS push button When changed the unit will power up in the configuration it was in when it was last powered down 5 THERMAL This status light indicates when the power source has been driven into thermal overload If the output terminals were ON the ON light will blink indicating that the output will be turned back on once
163. c application out of position other types of joints etc The comments on the table below show values of WFS below which it is not recommended to weld The rea son is that below these values the weld transfer will change from spray arc to a short arc which is not advisable when welding aluminum WELDING PROCEDURES FOR PULSE ON PULSE LINCOLN MATERIAL Aluminum 4043 Aluminum 4043 Aluminum 5356 Aluminum 5356 GAS 100 Ar 100 Ar 100 Ar 100 Ar WIRE E4043 E4043 E5356 E5356 olo WIRE SIZE 0 035 3 64 0 035 3 64 5 i o 149 250 0 200 0 230 0 225 0 og a9 T 77 ze 2 10 400 0 280 0 425 0 400 0 5 ul x 9 4 7 e gt Sz 3 16 550 0 340 0 670 0 500 0 9 lt 1 4 600 0 400 0 700 0 550 0 E COMMENTS Not Recommended Not Recommended Not Recommended Not Recommended 4 below 200 WFS below 100 WFS below 200 WFS below 200 WFS V350 PRO 14 5 LINCOLN 5 o tc S o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH B 14 201 uonoes DOL uonoes uumeg 201 uonoes DOL uonoes Return to Master Return to Master TOC Q 7 5 Return to Master TOC TABLE OF CONTENTS ACCESSORIES SECTION Accessories TTE Section C
164. cess in memory SELECT button The right button selects between the Hot Start or Arc Control The will indicate the active feature shown below Right Digital Window Stat 10 to 0 10 Arc Control 0 to 10 ADJUST knob adjusts the desired settings for the Hot Start or Arc Control feature that is active WELDING PROCESS MODES AVAILABLE Stick SMAW TIG GTAW Gouge CAG CV MIG GMAW CV Flux Core Pulse MIG ELECTRODE MATERIAL Steel Metal Core Stainless Aluminum Nickel EXAMPLE OF SAVING WELDING MODES TO MEM ORY The following example is how to select Pulse MIG using 035 steel and store it into memory 1 Turn the Select knob until welding process is dis played LEFT WINDOW RIGHT WINDOW Pulse MIG Argon Blends Steel 035 2 Wait two seconds and the right window will display Arc Control on the second line on the right side Pulse MIG Argon Blends Steel 035 Arc Cntr lt 3 SPd is displayed in the upper right Volts window The left Amps window matches the desired wire feed speed that is set on the wire feeder Adjust the Output knob until desired number is displayed 4 Start welding If the arc length is too short turn the Output knob up If the arc length is too long turn the Output knob down The Arc Control which is displayed in the right digital window can be used to fine tune the arc length and characteristics 5 After all adjustments have been made press and hold the
165. ction Return to Master TOC Return to Section TOC Return to Master TOC Q 5 2 5 tc Return to Section TOC Return to Master TOC Q 7 52 5 9 OPERATION LOWER CASE PANEL The output studs line switch and remote connector are located on the lower case front 9 Both terminals are Twist Mate connectors The Negative terminal is configured to accept the pass through gas system 10 The METER POLARITY switch is located above the output connectors The switch provides a work connection for wire feeder voltmeters Place the switch in the position of the electrode polarity indi cated by the decal The switch does not change the welding polarity 11 6 pin MS style connector for remote control 12 14 pin MS style connector for wire feeder connec tion and remote control REMOTE CONTROL of the OUTPUT CONTROL and WELD TERMINALS The Invertec V350 Pro has auto sensing of remote out put controls If after connecting or removing a remote the Invertec V350 Pro did not configure the way you would like the local or remote control settings can be changed by pushing the OUTPUT CONTROL or WELD TERMINAL button A user cannot select between the 6 and 14 pin MS style connectors CV modes remote will default to the 14 pin MS style con nector if a remote is connected If no remote is con nected to the 14 pin MS
166. ctric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION This test will help determine if there is a possible open in the SPI cable and also determine if the correct supply voltages are being applied to the boards in the SPI network Return to Section TOC Return to Master TOC MATERIALS NEEDED Volt Ohmmeter 5 16 Nut Driver This procedure takes approximately 35 minutes to perform Ojo O10 5 5 0 815 218 5 2 a Return to Section Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o E 5 B tc Return to Section TOC Return to Master TOC Q 7 5 46 TROUBLESHOOTING AND REPAIR SPI CABLE RESISTANCE AND VOLTAGE TEST continued TEST PROCEDURE Remove the input power to
167. ducer refer to button in until the displays read Mode 200 Transducer Removal and Replacement Release the Mode Select Button and the machine will be in mode 200 With the V350 PRO mode 200 apply the grid load across 11 Remove input power to the V350 PRO the output of the V350 PRO set machine out put to 300 amps and enable WELD TERMI 12 2 boxtop and any cable NALS Adjust the grid load to obtain 300 P y amps the external ammeter and check 13 Install the case wraparound cover using the feedback voltages per Table F 5 5 16 nut driver A Pin 1 lead 801 to Pin 6 lead 806 should read 2 4 VDC machine loaded to 300 amps V350 PRO LINCOLN F 40 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 40 201 uonoes DOL uonoes uumeg 201 uonoes DOL uonoes F 41 F 41 TROUBLESHOOTING AND REPAIR FAN CONTROL AND MOTOR TEST WARNING Return to Section TOC Return to Master TOC Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual If for any r
168. dvanced Process Panel lower left display equals 100 Note that this should require exactly one revolution of the encoder knob Turn the Advanced Process Panel left encoder counter LEnc clockwise until the value displayed on the Advanced Process Panel lower left display equals zero Note that this should require exactly one revolution of the encoder knob Turn the Advanced Process Panel right encoder clockwise rEnc 100 until the value displayed on the Advanced Process Panel lower left display equals 100 Note that this should require exactly one revolution of the encoder knob Turn the Advanced Process Panel right encoder counter rEnc clockwise until the value displayed on the Advanced Process Panel lower left display equals zero Note that this should require exactly one revolution of the encoder knob 17 Press and hold the Advanced Process Panel Memory but EorY OFF ton until the right display changes to on Release the Advanced Process Panel Memory button Press and hold the Advanced Process Panel Select button oFF Release the Advanced Process Panel Select button Verify that the Advanced Process Panel upper left display dISP contains the following pattern and that the brightness of the characters is uniform 0123456789ABCDEF Press and release the Advanced Process Panel Memory button to advance to the next step Verify that the Advanced Process Panel lower left display 915 contains the following pattern and
169. e Gentle prying from behind the board may be required Replace the display board Replace plugs J3 and J37 previously removed V350 PRO 15 Replace the four phillips head screws removed 16 17 18 from the front of the machine located around the two welder output terminals Replace the two flat head screws and their wash ers mounting the input power switch Using a 5 16 nut driver replace the two screws previously removed from the bottom front of the machine Replace the case wraparound cover LINCOLN 5 59 F 59 TROUBLESHOOTING amp REPAIR MAIN SWITCH BOARD REMOVAL AND REPLACEMENT WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual Return to Section TOC Return to Master TOC If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION The following procedure will aid the technician in removing the main switch board for main tenance or replacement Return to Section TOC
170. e Mode Display Advanced Panel Panel u Process gt Notused Panel 6 Pin S lt 8 Amphenol 8 Output Weld 9 Control Terminals Optional Solenoid c Output Potentiometer tc V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC O10 515 0 gt 218 JE 2 1 Return to Section Return to Master TOC E 2 E 2 THEORY OF OPERATION FIGURE E 2 INPUT VOLTAGE AND PRECHARGE To Control Main Switch Board Board DN Input aN Input switch Rectifier Reconnect gt Switch 4 l Sensor UE Sensor Primary Current Feedback Positive Output Pri Y Terminal Current Negative Output Terminal Primary Current 115VAC Fan Supply Auxiliary 8 115VAC 42VAC Transformer 8 Input Relay Control V F Capacitor Feedback 2 Machine Control Supply 1 15VDC 5VDC Output Voltage Sense feublg 1891 Power Board SPI Supply 15VDC 5VDC RS232 Supply 5VDC ts gt gt Control Board RS232 SPI Communications amp 15VDC 5VDC Supply Remote Control amp Trigger Output Weld Control Remote Boa
171. e Outputs Feconmended Phases 300Amps 350Amps Line a Notes 32Volts 100 34Volts 60 Recommended Recommended 230 69 85 125A Note 2 Recommended Recommended Recommended Recommended 415 41 64 460 36 42 575 Return to Section Return to Master TOC 80A Note 2 70A 50A _ e p 41 50 80A Ojo O10 515 0 gt 218 5 2 a Note 1 Not rated is indicated by 4 x s in the box the rating plate Note 2 When operating on these inputs the line cord should be changed to an input conductor of 6 AWG or larger OUTPUT CABLES CONNECTIONS AND LIMITATIONS Select The output cable size based upon the following chart Cable sizes for Combined Length of Electrode and Work Cable Copper 75C rated DUTY CYCLE CURRENT LENGTH UP TO 200FT 61m 100 300 1 0 60 350 1 0 Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC Q 5 2 5 tc Return to Section TOC Return to Master TOC Q 7 5 A 3 A 3 INSTALLATION SAFETY PRECAUTIONS A WARNING ELECTRIC SHOCK can kill e TURN THE INPUT POWER OFF AT THE DISCONNECT SWITCH BEFORE ATTEMPTING TO CONNECT OR DIS CONNECT INPUT POWER LINES OUTPUT CABLES OR CONTROL CABLES Only qualifi
172. e Power Board Test Remove the input power to the V350 PRO machine Replace plug J3 into the control board Replace any cable ties previously removed Replace the case wrap around cover FIGURE F 15 Plug J3 V350 PRO O 1 O O Pin 2 Plug 3 lo o O 10 LINCOLN 5 F 47 F 47 TROUBLESHOOTING AND REPAIR VOLTAGE AND CURRENT CALIBRATION PROCEDURE WARNING Return to Section TOC Return to Master TOC Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION This test will help determine if the machine is capable of producing welding output and to check and adjust if necessary the voltage and or current calibration Return to Section TOC Return to Master TOC MATERIALS NEEDED Resistive Load Bank Calibrated Test Voltmeter Calibrated Test Ammeter 5 5 0 815 218 5 2
173. e board Using a flat head screwdriver remove the two mounting screws and washers from the bottom of the remote board See Figure F 31 Remove the remote board Replace the remote board Replace the two flat head mounting screws and washers previously removed from the bottom of the remote board Replace plugs J331 J333 J33 and previously removed from the remote board 17 18 20 21 Replace plug J37 previously removed from the display board Replace the four phillips head screws removed from the front of the machine located around the two welder output terminals Replace the two flat head screws and their wash ers from around the input power switch Using a 5 16 nut driver replace the two screws previously removed from the bottom front of the machine Replace the case wraparound cover FIGURE F 31 REMOTE BOARD PLUG LOCATION J33 Remote Board 333 Flathead Mounting Screws V350 PRO 4331 LINCOLN 5 73 F 73 TROUBLESHOOTING amp REPAIR SNUBBER BOARD REMOVAL AND REPLACEMENT WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual
174. e output terminal of polar ity required by electrode Connect the work lead to the other terminal LN 25 with Remote Control options can be used with the Factory Advanced Process version of the V350 The 6 Pin 444 1 and 14 pin K444 2 remotes can be connected directly to the 6 pin amp 14 pin MS style connectors The 42 Volt Remote Voltage and Output Control K624 1 Kit can be connected to the V350 s 14 pin MS style connector using Remote Control Cable assembly K627 LN 25s with a K431 1 remote kit can be connected to the V350 s 14 pin MS style connector using a K432 cable and K876 adapter See connection diagram 519899 Or the K432 cable could be modified with a K867 Universal Adapter Plug See connection diagram 519405 to connect it to the V350 s 14 pin MS style connector V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC O10 5 5 0 815 218 5 2 a Return to Section Return to Master TOC Return to Master TOC A 4 A 4 INSTALLATION LN 7 Connection Instructions An LN 7 can only be used with the Factory amp Advanced Process versions of the 350 Pro Turn the Invertec power switch off Connect the K480 control cable from the LN 7 to the 14 pin MS style connector Connect the electrode cable to the output terminal of the polarity required by electrode Connect the work lead to the other
175. eason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION This test will help determine if the fan motor control board switch board or associated leads and connectors are functioning correctly Return to Section TOC Return to Master TOC MATERIALS NEEDED Voltmeter 5 16 Nut Driver This procedure takes approximately 40 minutes to perform O10 5 5 0 gt 218 5 2 a Return to Section Return to Master TOC V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC E 5 5 0 gt 2 2 5 2 a Return to Section Return to Master TOC F 42 F 42 TROUBLESHOOTING AND REPAIR FAN CONTROL AND MOTOR TEST continued TEST PROCEDURE 1 Remove the input power to the V350 PRO Perform the Input Filter Capacitor Discharge machine 2 Using the 5 16 nut driver remove the case 4 Locate plug J22 on the main switch board Do wraparound cover not remove the plug from the board See Figure F 12 FIGURE F 12 PLUG J22 LOCATION 5 Carefully apply the correct inp
176. ector the Weld Terminals are controlled from pin D lead 2 and pin E lead 4 In the 6 pin MS style connector pin D is positive V350 PRO LINCOLN 5 OPERATION AUXILIARY POWER 115VAC 42VAC and 24VAC power is available from the 14 pin MS style connector The Construction model of the Invertec V350 Pro does not have the 14 pin MS style connector These supplies are intended to supply power for auxiliary equipment like wire feeders and the TIG Module 115VAC supply is rated at 2 amps and is protected by a 3 5 amp breaker 42 VAC supply is rated at 5 5 amps and is protected by a 6 amp breaker 24 VAC supply is rated at 5 5 amps and is protected by a 6 amp breaker Return to Section TOC Return to Master TOC LIMITATIONS The V350 Pro is not recommended for processes other than those listed The V350 Pro can only be used with the recom mended equipment and options RECOMMENDED PROCESSES Properly equipped the Invertec V350 Pro supports GMAW P FCAW SMAW GTAW and CAC A processes for a variety of materials including mild steel stainless steel cored wires and aluminum Return to Section TOC Return to Master TOC O10 5 5 0 gt 2 2 EIS 2 1 Return to Section Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC O10 5 5 0 815 218
177. ed personnel should perform this installation Connect the green yellow lead of the power cord to ground per U S National Electrical Code SELECT SUITABLE LOCATION The Invertec V350 PRO will operate in harsh environ ments Even so it is important that simple preventative measures are followed in order to assure long life and reliable operation The machine must be located where there is free cir culation of clean air such that air movement in the back out the sides and bottom will not be restricted Dirt and dust that can be drawn into the machine should be kept to a minimum Failure to observe these precautions can result in excessive operating temperatures and nuisance shutdown Keep machine dry Shelter from rain and snow Do not place on wet ground or in puddles DO NOT MOUNT OVER COMBUSTIBLE SURFACES CAUTION Where there is a combustible surface directly under stationary or fixed electrical equipment that surface shall be covered with a steel plate at least 06 1 6mm thick which shall extend not less than 5 90 150mm beyond the equipment on all sides STACKING V350 PRO cannot be stacked TILTING Place the machine directly on a secure level surface or on a recommended undercarriage The machine may topple over if this procedure is not followed INPUT AND GROUNDING CONNECTIONS Only a qualified electrician should connect the Invertec V350 PRO Installation should be made in accordance with t
178. el board may be faulty The control board may be faulty The output control and or Weld Terminals Select functions do not operate properly Refer to Operation Section of this manual for normal operation characteristics Check for proper current and voltage calibration Check for loose or faulty plug connections between the remote board and the weld out put controls See the wiring dia gram The Remote Board may be faulty The control board may be faulty CAUTION If for any reason you do not understand the test procedures or are unable to perform the test repairs safely con tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 2 5 tc Return to Section TOC Return to Master TOC o 52 5 8 8 TROUBLESHOOTING amp REPAIR Observe Safety Guidelines detailed in the beginning of this manual PROBLEMS SYMPTOMS The display is not functioning prop erly A fault or error code is displayed POSSIBLE AREAS OF MISADJUSTMENT S FUNCTION PROBLEMS Refer to the Operation Section of this manual for normal opera tion characteristics Check for proper curre
179. eld terminals push button again and verify that both of the weld terminals LEDs are off The LOCAL and REMOTE workpoint source LEDs should both be off Press the workpoint source push button to select LOCAL and verify that the workpoint source LOCAL LED turns on and that the REMOTE workpoint source LED remains off Press the workpoint source pushbutton again to select LorE workpoint source REMOTE and verify that the work point source LOCAL LED turns off and the workpoint source REMOTE workpoint source LED turns on 30 Press the workpoint source pushbutton again and verify LorE cLr that both workpoint source LEDs are off This will only appear if a potentiometer is already con dcon 16 roCP nected to the 6 amphenol connector on the front of the machine If this message appears disconnect the potentiometer from the 6 pin amphenol connector Connect a remote output control potentiometer to the 6 6 PIn roCP pin amphenol connector on the front of the machine Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Ojo O10 515 0 815 EIS 2 1 Return to Section Return to Master TOC V350 PRO LINCOLN 5 d TROUBLESHOOTING AND REPAIR RETEST AFTER REPAIR Action Expected Results i Lt display Rt display Adjust the remote output control potentiomet
180. electrode sticking TIG GTAW The TIG mode features continuous control from 5 to 425 amps The TIG mode can be run in either the TIG touch start or high frequency optional equip ment required assisted start mode e The Hot Start control selects the starting mode desired A setting of less than 5 the TIG lift start mode is selected The OCV is controlled below 10v and the short circuit TIG touch current is main tained at 25 amps independent of the preset current When the tungsten is lifted an arc is initiated and the output is regulated at the preset value Hot start settings between 0 and 5 regulate the arc initiation current A setting of 5 results in the most positive arc initiation A setting of 0 reduces hot start e Hot Start settings between 5 and 10 select high fre quency assisted starting TIG mode In this range the OCV of the machine is controlled between 50 and 70 volts If using the Lincoln K930 1 TIG Module set the Hot start to 10 for maximum OCV Arc Control is not used in the mode TIG SOLENOID OPTION The Solenoid only operates when the V350 is in the TIG mode If the Weld Terminals are in Remote then the solenoid will open when the arc start switch is closed The solenoid will close after the arc switch has been opened and the post flow time expired If the Weld Terminals are turned then the sole noid will open when the electrode is touched to the work The electrode needs
181. emise paisse pan talons sans revers et chaussures montantes Toujours porter des lunettes de s curit dans la zone de soudage Utiliser des lunettes avec crans lateraux dans les zones l on pique le laitier V350 PRO er l interrupteur la boite de fusibles Garder tous les couvercles et dispositifs de s ret leur place LINCOLN 5 MASTER TABLE OF CONTENTS FOR ALL SECTIONS RETURN TO MAIN INDEX Page Safety eea a a a e a i iv Clu E Section A Operation MM HEU Section B ACC ESSONNES ei ohio ss cence te success Uri T EE Section C Maintenance RR Section D Theory of Operation se Section E Troubleshooting and Section F How to Use Troubleshooting F 2 Troubleshooting 4 TeSt Procedure S F 15 Replacement Procedures F 51 Electrical 5 Section Parts reU RR ERREUR M P 401 Series V350 PRO LINCOLN 5 SectionA 1 Section A 1 TABLE OF CONTENTS INSTALLATION SECTION O O o 9 gt Installation 2 Technical
182. er connect 6 PIn roCP ed to the 6 amphenol connector to its highest set ting Adjust the remote output control potentiometer connect 6 rocP Lo ed to the 6 pin amphenol connector to its lowest set ting This will only appear if a trigger switch is already con 6 rlgr oFF nected to the 6 pin amphenol connector on the front of the machine and the trigger switch is presently on Turn the trigger switch connected to the 6 pin amphenol connector off Turn the trigger switch connected to the 6 6 connector on Turn the trigger switch connected to the 6 pin amphenol 6 oFF connector off This will only appear if a potentiometer is still connect dcon 6 roCP ed to the 6 amphenol connector If this message appears disconnect the potentiometer from the 6 pin amphenol connector This will only appear if a potentiometer is already con dcon 1 14 roCP nected to the 14 pin amphenol connector If this mes sage appears disconnect the potentiometer from the 14 pin amphenol connector 40 Connect a remote output control potentiometer to the con 14 PlnroCP 14 pin amphenol connector 41 Adjust the remote output control potentiometer connect 14 roCP HI ed to the 14 pin amphenol connector to its highest set ting Adjust the remote output control potentiometer connect 14 roCP Lo ed to the 14 pin amphenol connector to its lowest s
183. ersists replace the suspect PC board using standard practices to avoid static electrical damage and electrical shock Read the warning inside the static resistant bag and perform the following procedures PC board can be damaged by static electricity Remove your body s static charge before opening the static shielding bag Wear an anti static wrist strap For safety use a 1 Meg ohm resistive cord connected to a grounded part of the equipment frame ATTENTION Static Sensitive If you don t have a wrist strap touch an un painted grounded part of the equipment frame Keep touching the frame to prevent static build up Be sure not to touch any electrically live parts at the same time Devices Handle only at Static Safe Workstations Tools which come in contact with the PC board must be either conductive anti static or static dissipative Remove the PC board from the static shielding bag and place it directly into the equipment Don t set the PC board on or near paper plastic or cloth which could have a static charge If the PC board can t be installed immediately put it back in the static shield ing bag If the PC board uses protective shorting jumpers don t remove them until installation is complete If you return a PC board to The Lincoln Electric Company for credit it must be in the static shielding bag This will prevent further damage and allow prop er failure analysis 4 Test the machi
184. est repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION The following procedure will aid the technician in removing the mode board for maintenance or replacement Return to Section TOC Return to Master TOC MATERIALS NEEDED 5 16 Nut Driver Small Flathead Screwdriver Flathead Screwdriver Small Phillips Head Screwdriver Phillips Head Screwdriver 9 16 Wrench This procedure takes approximately 40 minutes to perform 5 5 0 815 218 5 2 a Return to Section Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 B tc Return to Section TOC o 5 Return to Master TOC F 64 F 64 TROUBLESHOOTING amp REPAIR ADVANCED PROCESS PANEL REMOVAL AND REPLACEMENT continued FIGURE F 25 MODE BOARD LOCATION Display Board Mode Board or Advanced Process Board PROCEDURE 3 Perform the Filter Capacitor 1 Remove input power to the V350 PRO Discharge Procedure detailed earlier in this 5 section 2 Using a 5 16 nut driver remove the case wraparound cover 4 Locate the advanced process board behind the front panel of
185. et voir le code Code for safety in welding and cutting CSA Standard W 117 2 1974 PR CAUTIONS DE S RET POUR contre les chutes dans le cas ou on recoit un choc Ne jamais LES MACHINES SOUDER enrouler le c ble lectrode autour de n importe quelle partie du TRANSFORMATEU R ET 2 Dans le cas de travail au dessus du niveau du sol se prot ger corps REDRESSEUR Un coup d arc peut tre plus s v re qu un coup de soliel donc a Utiliser un bon masque avec un verre filtrant appropri ainsi qu un verre blanc afin de se prot ger les yeux du rayon nement de l arc et des projections quand on soude ou quand on regarde l arc b Porter des v tements convenables afin de prot ger la peau de soudeur et des aides contre le rayonnement de l arc c Prot ger l autre personnel travaillant proximit au soudage l aide d crans appropri s et non inflammables Relier la terre le chassis du poste conformement au code de l lectricit et aux recommendations du fabricant Le dispositif de montage ou la piece souder doit tre branch une bonne mise la terre Autant que possible l installation et l entretien du poste seront effectu s par un lectricien qualifi Avant de faires des travaux l interieur de poste la debranch Des gouttes de laitier en fusion sont mises de l arc de soudage Se prot ger avec des v tements de protection libres de l huile tels que les gants en cuir ch
186. et ting This will only appear if a trigger switch is already con 14 rlgr oFF nected to the 14 pin amphenol connector and the trig ger switch is presently on Turn the trigger switch con nected to the 14 pin amphenol connector off 44 Turn the trigger switch connected to the 14 pin amphe 14 rlgr on nol connector on 5 4 Turn the trigger switch connected to the 14 pin amphe 14 rlgr oFF nol connector off V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC Return to Master TOC Ojo O10 515 0 815 EIS 2 1 Return to Section Return to Master TOC m TROUBLESHOOTING AND REPAIR RETEST AFTER REPAIR Test R A Acton Expected Results xu Lit display Rt display This will only appear if a potentiometer is still connect dcon 14 ed to the 14 pin amphenol connector If this message appears disconnect the potentiometer from the 14 pin amphenol connector Test steps 21 24 verify the functionality of the gas sole noid If an oscilloscope is available verify that the cur rent flowing through the gas solenoid is zero before the solenoid is energized increases to approximately 700mA pull in current remains at 700 mA for approxi mately 150 msec and decreases to approximately 200mA hold current Press the local remote pushbut ton to turn the gas solenoid on 150msec gt 200mA
187. ffects which are now not known All welders should use the following procedures in order to minimize exposure to EMF fields from the welding circuit 2 d 1 Route the electrode and work cables together Secure them with tape when possible 2 4 2 Never coil the electrode lead around your body 2 d 3 Do not place your body between the electrode and work cables If the electrode cable is on your right side the work cable should also be on your right side 2 d 4 Connect the work cable to the workpiece as close as possible to the area being welded 2 d 5 Do not work next to welding power source LINCOLN 5 Return to Master Return to Master TOC Q 7 5 Return to Master TOC SAFETY ELECTRIC SHOCK can kill 3 a The electrode and work or ground circuits are electrically hot when the welder is on Do not touch these hot parts with your bare skin or wet clothing Wear dry hole free gloves to insulate hands 3 b Insulate yourself from work and ground using dry insulation Make certain the insulation is large enough to cover your full area of physical contact with work and ground In addition to the normal safety precautions if welding must be performed under electrically hazardous conditions in damp locations or while wearing wet clothing on metal structures such as floors gratings or scaffolds when in cramped positions such as
188. he appropriate National Electrical Code all local codes and the information detailed below When received directly from the factory multiple volt age machines are internally connected for 460VAC If 460VAC is the desired input then the machine may be connected to the power system without any setup required inside the machine Initial 200VAC 415VAC and 575VAC operation will require an Input voltage panel setup Open the access panel on the rear of the machine For 200 or 230 Position the large switch to 200 230 For higher voltages Position the large switch to 380 575 Move the A lead to the appropriate terminal POWER CORD CONNECTION A 10 ft power cord is provided and wired into the machine Follow the power cord connection instruc tions CAUTION Incorrect connection may result in equipment damage WHITE OR BROWN Single Phase Input Connect green lead to ground per National Electrical Code Connect black and white leads to power Wrap red lead with tape to provide 600V insulation Three Phase Input Connect green lead to ground per National Electric Code Connect black red and white leads to power CONNECTIONS OF WIRE FEEDERS TO V350 PRO LN 25 Connection Instructions Factory Construction amp Advanced Process versions can be connected Not recommended for Pulse Welding with the Advanced Process Model Turn the Invertec power switch off Connectthe electrode cable to th
189. he nylon mount ing pins 16 17 18 Replace the four allen bolts and washers previously removed Replace the eight capacitor terminal nuts washers and necessary leads previously removed Reconnect the three harness plugs previous ly removed Reconnect the nine leads 201 209 that were previously removed Pre torque all screws to 25 inch lbs before tightening to 44 inch 105 Replace the case wraparound cover FIGURE F 24 NYLON MOUNTING PIN DEPRESS LOCKING TAB ON MOUNTING PIN V350 PRO LINCOLN 5 F 61 62 5 LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 62 201 uonoes 901 uumeg 201 uonoes DOL uonoes F 63 F 63 TROUBLESHOOTING amp REPAIR ADVANCED PROCESS PANEL REMOVAL AND REPLACEMENT WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual Return to Section TOC Return to Master TOC If for any reason you do not understand the test procedures or are unable to perform the t
190. henol on the rear of the Invertec 3 Connect the electrode cable to the output terminal of the polarity required by electrode Connect the work lead to the other terminal 4 Set the meter polarity switch on the front of the Invertec to coincide with wire feeder polarity used 5 remote control such as K857 is to be used with the Cobramatic the remote can be connected directly to the 6pin amphenol on the front of the Invertec or use a K864 adapter to connect the cobramatic and the remote to the 24 42VAC 14 pin wire feeder amphenol connector on the rear of the Invertec TIG Module K930 2 The TIG Module connects to the V350 Pro Factory or CE versions with a K936 1 9 14 pin control cable Connect the K936 1 to the 115VAC Wire Feeder Amphenol on the rear of the V350 Pro The TIG Module can also be used with the V350 Construction version A K936 4 control cable is required to supply 115VAC to the TIG Module from an external 115VAC supply General Instructions for Connection of Wire Feeders to V350 Pro Wire feeders other than LN 7 and LN 25 may be used provided that the auxiliary power supply capacity of the V350 Pro is not exceeded K867 universal adapter plug is required See connection diagram 519406 and 519386 at the back of this manual for more information Remote Control of Invertec Remote Control K857 Hand Amptrol K963 and Foot Amptrol K870 OPTIONS ACCESSORIES Construction Version K1728 2 All weld
191. hine souder comme une source de courant pour soudage semi automatique ces precautions pour le porte lectrode s applicuent aussi au pistolet de soudage Eloigner les mat riaux inflammables ou les recouvrir afin de pr venir tout risque d incendie d aux tincelles Quand on ne soude pas poser la pince une endroit isol de la masse Un court circuit accidental peut provoquer un chauffement et un risque d incendie S assurer que la masse est connect e le plus pr s possible de la zone de travail qu il est pratique de le faire Si on place la masse sur la charpente de la construction ou d autres endroits loign s de la zone de travail on augmente le risque de voir passer le courant de soudage par les chaines de levage c bles de grue ou autres circuits Cela peut provoquer des risques d incendie ou d echauffement des chaines et des c bles jusqu ce qu ils se rompent Assurer une ventilation suffisante dans la zone de soudage Ceci est particuli rement important pour le soudage de t les galvanis es plomb es ou cadmi es ou tout autre m tal qui produit des fume s toxiques Ne pas souder en pr sence de vapeurs de chlore provenant d op rations de d graissage nettoyage ou pistolage La chaleur ou les rayons de l arc peuvent r agir avec les vapeurs du solvant pour produire du phosg ne gas fortement toxique ou autres produits irritants 11 Pour obtenir de plus amples renseignements sur la s r
192. hine to the nearest Lincoln Field Service Shop ELECTRIC SHOCK kill Do not touch electrically live parts or electrode with skin or wet clothing insulate yourself from work and ground Always wear dry insulating gloves EXPLODING PARTS can cause injury A Failed parts can explode or cause other parts to explode when power is applied Always wear a face shield and long sleeves when servicing See additional warning information throughout this Operator s Manual CAPACITOR DISCHARGE PROCEDURE 1 Obtain a power resistor 25 ohms 25 watts 2 Hold resistor body with electrically insulated glove DO NOT TOUCH TERMINALS Connect the resis tor terminals across the two studs in the position shown Hold in each position for 1 second Repeat for all four capacitors RESISTOR 3 Use a DC voltmeter to check that voltage is not present across the terminals on all four capaci tors VISUAL INSPECTION Clean interior of machine with a low pressure air stream Make a thorough inspection of all compo nents Look for signs of overheating broken leads or other obvious problems Many problems can be uncovered with a good visual inspection ROUTINE MAINTENANCE 1 Every 6 months or so the machine should be cleaned with a low pressure airstream Keeping the machine clean will result in cooler operation and higher reliability Be sure to clean these areas All printed circuit boards
193. ibility Note The LN 10 and DH 10 feeders can be used to pulse weld and in the power mode with the panel The dis plays on the LN 10 amp DH 10 do not show the wire feed speed or power 8 HOT START and ARC CONTROL features have different functions depending on the welding Mode that is active Each feature is described under the welding mode heading See Item 7 or 7 A for specified Mode Operations See Figure 1 2 V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC Q 5 2 5 tc Return to Section TOC Return to Master TOC Q 7 5 7 WELD MODE DETAILS GTAW Tig mode GMAW Power Range 5 425 amps 5 425 amps 5 425 amps 10 45 volts 10 45 volts OPERATION Comments The stick soft mode is the best selection for general stick applications Arc Control Arc Force Hot Start Initial hot start current min start a match set amps Max greatest hot start current During hot start arc force is set at high and is fast response For gouging applications Turn current up to 425 amps The stick crisp mode features an aggressive arc force routine well suit ed for Exx10 Exx11 series electrodes Arc Control Arc Force Hot Start Initial hot start current Mid range welding current and will vary up and dow
194. in 1 volt 8 The V350 PRO ammeter must match the test meter within 5 amps 9 Ifthe voltmeter does not meet the specification then proceed to the Voltage Calibration 10 If the ammeter does not meet the specification then proceed to Current Calibration NOTE Before attempting to calibrate the voltage or current setting of the V350 PRO be sure to read the entire voltage or current calibration section the steps are not completed quickly the machine will automatically leave the calibration mode with out changing the calibration settings The voltage and current calibration settings of the V350 PRO are completely independent of each other Adjusting one will not affect the other V350 PRO VOLTAGE CALIBRATION 1 Connect the resistive load band approximate ly 087 ohms and test voltmeter to the welding output terminals Press and hold in the Mode Select Memory button Turn on the V350 PRO Rotate the Output Control knob until the dis play reads vol cAL Release the Mode Select Memory button Adjust the output control knob until the actual output voltage reading on the test volt meter is 20volts 5 volts Wait for the machine s output to be automati cally turned off and then back on Adjust the Output Control knob again if neces sary to make the actual voltage output 20 volts 5 volts Wait for the machine s output to be automati cally turned off and then back on
195. ing modes for this model run with local out put control and weld terminals ON e g Stick TIG LN25 off the arc K930 1 K428 K446 K449 TIG Module LN 25 Off the Arc CE Version K1728 3 The CE version is the Factory version with the addition of power line filtering allowing the machine to comply with the European and Australian EMC emission requirements Field Installed Options Accessories Two versions of the V350 Pro are available from the factory for both the CE and ROW versions Options for K1728 1 Factory and K1728 3 CE V350 s TIG Gas Control Kit K1762 2 Advanced Process Panel K1763 1 Options for all models of V350 PRO Undercarriage K1764 1 Valet Style Undercarriage K1838 1 Welding Cable Connectors e K852 70 1 0 2 0 cable K852 95 2 0 3 0 cable FACTORY VERSION and ADVANCED PROCESS VERSION K857 Remote Output Control K814 Arc Start Switch K812 Hand Operated Amptrol K870 Foot Operated Amptrol Note All of the above remote controls connect directly to the 6 pin MS style connector with either a K864 or K876 adapter and connect it to the 14 pin wire feeder MS style connector See Diagram in Section F 1 K930 TIG Module K428 K446 K449 LN 25 K617 1 or 2 K618 1 or 2 LN 742 K440 1 K567 1 LN 7 GMA K1559 1 K1564 1 LN 10 K1499 1 K1521 1 DH 10 K1587 1 Cobramatic Not recommended for pulse welding V350 PRO LINCOLN 5 ACCESSORIES QUICK DISCONNE
196. it up and do not start engine until fumes have been eliminated 1 d Keep all equipment safety guards covers and devices in posi tion and in good repair Keep hands hair clothing and tools away from V belts gears fans and all other moving parts when starting operating or repairing equipment In some cases it may be necessary to remove safety guards to perform required maintenance Remove guards only when necessary and replace them when the maintenance requiring their removal is complete Always use the greatest care when working near moving parts 1 f Do not put your hands near the engine fan Do not attempt to override the governor idler by pushing on the throttle control rods while the engine is running To prevent accidentally starting gasoline engines while turning the engine or welding generator during maintenance work disconnect the spark plug wires distributor cap or magneto wire as appropriate 1 h To avoid scalding do not remove the radiator pressure cap when the engine is hot ELECTRIC AND MAGNETIC FIELDS may be dangerous 2 a Electric current flowing through any conductor causes localized Electric and Magnetic Fields EMF Welding current creates EMF fields around welding cables and welding machines EMF fields may interfere with some pacemakers and welders having a pacemaker should consult their physician before welding Exposure to EMF fields in welding may have other health e
197. ittings etc should be suitable for the application and maintained in good condition Always keep cylinders in an upright position securely chained to an undercarriage or fixed support Oylinders should be located Away from areas where they may be struck or subjected to physical damage safe distance from arc welding or cutting operations and any other source of heat sparks or flame Never allow the electrode electrode holder or any other electrically hot parts to touch a cylinder Keep your head and face away from the cylinder valve outlet when opening the cylinder valve Valve protection caps should always be in place and hand tight except when the cylinder is in use or connected for use Read and follow the instructions on compressed gas cylinders associated equipment and CGA publication Precautions for Safe Handling of Compressed Gases in Oylinders available from the Compressed Gas Association 1235 Jefferson Davis Highway Arlington VA 22202 FOR ELECTRICALLY powered equipment 8 a Turn off input power using the disconnect switch at the fuse box before working on the equipment Install equipment in accordance with the U S National Electrical Code all local codes and the manufacturer s recommendations Ground the equipment in accordance with the U S National Electrical Code and the manufacturer s recommendations Mar 95 LINCOLN 5 Return to Master TOC
198. l amp Trigger ode i 99 bes K Panel ed Process gt Panel 6 Pin S E Amphenol 8 Output Weld Control Terminals Optional Solenoid Output Potentiometer 2 POWER BOARD CONTROL BOARD _ the V350 machine The control board sends and Fle receives command signals from the mode or advanced Sls AND SERIAL PERIPHERAL INTER process panel the display panel and the remote panel 5 9 FACE SPI COMMUNICATIONS These communications are processed through a digi 9 gt tal network called a Serial Peripheral Interface SPI ele POWER BOARD This network digitally communicates to and from the control board also monitors thermostats the main transformer primary currents the input CONTROL BOARD capacitor voltages The control board performs the primary interfacing functions to establish and maintain output control of NOTE Unshaded areas of Block Logic Diagram are the subject of discussion V350 PRO LINCOLN 5 o 5 5 0 PEN gt gie 2 1 THEORY OF OPERATION FIGURE E 5 OUTPUT RECTIFIER AND CHOKE 2 To Control Main Switch Board Board mm Input Input switch Rectifier Current EP E Positive Output Terminal Negative Output Terminal Return to Section TOC Return to Master TOC Reconnect Switch dX ale CORSI 1 Primary Current Feedback
199. ld conform to ANSI Z87 standards Use suitable clothing made from durable flame resistant material to protect your skin and that of your helpers from the arc rays Protect other nearby personnel with suitable non flammable screening and or warn them not to watch the arc nor expose themselves to the arc rays or to hot spatter or metal 2 FUMES AND GASES can be dangerous 5 a Welding may produce fumes and gases hazardous to health Avoid breathing these fumes and gases When welding keep your head out of the fume Use enough ventilation and or exhaust at the arc to keep fumes and gases away from the breathing zone When welding with electrodes which require special ventilation such as stainless or hard facing see instructions on container or MSDS or on lead or cadmium plated steel and other metals or coatings which produce highly toxic fumes keep exposure as low as possible and below Threshold Limit Values TLV using local exhaust or mechanical ventilation In confined spaces or in some circumstances outdoors a respirator may be required Additional precautions are also required when welding on galvanized steel Do not weld in locations near chlorinated hydrocarbon vapors coming from degreasing cleaning or spraying operations The heat and rays of the arc can react with solvent vapors to form phosgene a highly toxic gas and other irritating products Shielding gases used for arc welding can displace air and
200. load is removed UNDER OVER VOLTAGE PROTECTION Protective circuits are included on the switch and con trol boards to monitor the voltage across the input capacitors In the event that a capacitor pair voltage is too high or too low the machine output will be dis abled The protection circuits will prevent output if any of the following conditions exist 1 Voltage across a capacitor pair exceeds 467 volts High line surges or improper input voltage connections 2 Voltage across a capacitor pair is under 190 volts Due to improper input voltage connections 3 Internal component damage V350 PRO LINCOLN 5 Return to Section TOC Return to Master TOC Return to Section TOC olo OJO 5 5 0 815 218 5 2 a Return to Section Return to Master TOC Return to Master TOC E 7 E 7 THEORY OF OPERATION INSULATED GATE BIPOLAR TRANSISTOR IGBT OPERATION An IGBT is a type of transistor IGBT are semiconduc tors well suited for high frequency switching and high current applications Example A in Figure E 6 shows an IGBT in passive mode There is no gate signal zero volts relative to the source and therefore no current flow The drain ter minal of the IGBT may be connected to a voltage sup ply but since there is no conduction the circuit will not supply current to components connected to the Source The circuit is turned OFF like a light switch Example
201. n with knobcontrol During hot start arc force is set at high and is fast response For gouging applications Turn current up to 425 amps The tig mode produces a soft steady constant current waveform for either touch start or high frequency assisted start DC GTAW applica tions Hot Start Min to Mid range Touch start with low OCV Mid to Max range High frequency assistedstarting with adjustable OCV up to 70 volts The GMAW CV mode is the best selection for general MIG welding Metal core and gas shielded applications Arc Control Pinch Min min pinch softest arc Max max pinch crispest arc The FCAW SS mode is designed for Self Shielded Innershield products that require tight voltage control For example the NR 203 series or NR 207 Arc Control Pinch Min min pinch softest arc Max max pinch crispest arc ADVANCED PULSE PANEL WELDING PROGRAMS 60 425 amps The gouging mode is a low power version of other Lincoln welding 1 18 No Units equipment gouging programs for example a PowerWave 455 Refer to the detailed explanation at the end of this section This mode does not allow preset voltage In the short arc GMAW mode the set KW will not equal the actual Volts Amps The set power is regulated only when an arc is present During shorting the output is allowed to increase to clear the short V350 PRO LINCOLN 5 OPERATION PULSE PROGRAMS Range IPM COMMENTS 030 Steel 65
202. nd on the referenced electrical wiring diagrams and schematics Refer to the Electrical Diagrams Section Table of Contents to locate the appropriate diagram CAUTION If for reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD V350 PRO LINCOLN 5 F 2 Return to Section Return to Master TOC Return to Section TOC O10 515 0 815 218 5 2 Return to Section Return to Master TOC Return to Master TOC TROUBLESHOOTING amp REPAIR PC BOARD TROUBLESHOOTING PROCEDURES WARNING N ELECTRIC SHOCK kill Have an electrician install and service this equipment Turn the input power OFF at the fuse box before working on equipment Do not touch electrically hot parts CAUTION Sometimes machine failures appear to be due to PC board failures These problems can sometimes be traced to poor electrical connections To avoid prob lems when troubleshooting and replacing PC boards please use the following procedure 1 Determine to the best of your technical ability that the PC board is the most likely component causing the failure symptom 2 Check for loose connections at the PC board to assure that the PC board is properly connected 3 If the problem p
203. ndition TROUBLESHOOTING GUIDE RECOMMENDED COURSE OF ACTION 1 The 115VAC fan motor is con trolled by the control board via the main switch board Perform the A thermostat or associated cir cuitry may be faulty See the wiring diagram normally closed thermostat is located on the output choke and the other is located on the main switch board heat sink See the wiring diagram Note Removal Procedure will be required to gain access to the heat sink thermostat An attached wire feeder will not function correctly Make certain the wire feeder control cable is connected to the correct 14 pin amphenol type plug 115 24 42VAC for the wire feeder being used See the connection diagram If wirefeeder has DIP switch be sure it is set correct ly 2 Check the two circuit breakers located at the rear of the machine Reset if tripped The wire feeder or control cable may be faulty 1 Perform the Transformer Test 2 Check the leads between the 14 pin amphenol type plugs and the auxiliary transformer for loose or faulty connections CAUTION If for any reason you do not understand the test procedures or are unable to perform the test repairs safely con tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD V350 PRO LINCOLN amp Return to Section Return to Master TOC
204. ne output will be at minimum when lead 76 wiper is at the end of the potentiometer that is connected to 75 The machine s output will increase as the wiper of the potentiometer is moved to the end that is connected to 77 Note In TIG mode moving the lead 76 wiper to lead 77 would produce the cur rent that has been set by the Invertec V350 Pro s front panel Output Control Remotes of this type offered by Lincoln Electric are the K857 K812 and K870 Voltage Control The supply must be an isolated supply Not refer enced to earth ground any auxiliary power from the Invertec V350 Pro or the welding output The supply should be capable of supplying at least 20mA 0 volts supplied to 76 will set the Invertec V350 Pro to minimum output for the mode that has been selected while 10 volts supplied to 76 will set the Invertec V350 Pro to the maximum output for the mode Note In TIG mode 10 volts supplied to lead 76 would produce the current that has been set by the Invertec V350 Pro s front panel Output Control Types of Remote WELD TERMINAL Control The Invertec V350 Pro s Weld Terminals can be con trolled from each of the MS style connectors The circuit has a nominal OCV of 15VDC and requires a dry contact closure less than 100 ohms to activate the output of the Invertec V350 Pro 14 Pin MS style connector the Weld Terminals are controlled from pin C lead 2 and pin D lead 4 Pin C is positive 6 Pin MS style conn
205. ne to determine if the failure symptom has been corrected by the replacement PC board NOTE It is desirable to have a spare known good PC board available for PC board troubleshooting NOTE Allow the machine to heat up so that all electrical components can reach their operating temperature 5 Remove the replacement PC board and substitute it with the original PC board to recreate the original problem a If the original problem does not reappear by substituting the original board then the PC board was not the problem Continue to look for bad connections in the control wiring harness junction blocks and terminal strips b If the original problem is recreated by the substitution of the original board then the PC board was the problem Reinstall the replacement PC board and test the machine 6 Always indicate that this procedure was followed when warranty reports are to be submitted NOTE Following this procedure and writing on the warranty report INSTALLED AND SWITCHED PC BOARDS TO VERIFY PROBLEM will help avoid denial of legitimate PC board warranty claims V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 2 5 tc Return to Section TOC Return to Master TOC Q 5 4 TROUBLESHOOTING amp REPAIR Observe Safety Guideline
206. nt and voltage calibration the Fault Code See Explanations TROUBLESHOOTING GUIDE RECOMMENDED COURSE OF ACTION Check for loose or faulty plug connections between the Display board and the control board See the wiring diagram 2 The display board may be faulty 3 The control board may be faulty 1 See Fault Code Explanations For no apparent reason the welding characteristics have change Check the welding cables for loose or faulty connection Make sure the machine s mode and output are set correctly for the process being used CV CC TIG etc Mig welding make sure the shielding gas and wire speed are correct for the process being used Check for proper current and voltage calibration 1 Perform the Voltage and 2 Perform the Transducer Test 3 Perform the Output Diode Module Test 4 The control board may be faulty 5 The advanced process panel If used may be faulty CAUTION If for any reason you do not understand the test procedures or are unable to perform the test repairs safely con tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 B tc Return to Section TOC Return to Master TOC
207. ntact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION This procedure will determine if the correct voltage is being applied to the primary of auxil iary transformer and also if the correct voltage is being induced on the secondary windings of the transformer Return to Section TOC Return to Master TOC MATERIALS NEEDED Volt ohmmeter Multimeter 5 16 Nut Driver Wiring Diagram This procedure takes approximately 25 minutes to perform 5 5 0 815 218 5 2 a Return to Section Return to Master TOC V350 PRO LINCOLN 5 F 34 F 34 TROUBLESHOOTING amp REPAIR 8 3 AUXILIARY TRANSFORMER TEST continued E 5 FIGURE 8 Auxiliary Transformer 8 2 818 Auxiliary Transformer Secondary Lead Plugs P52 Return to Section TOC Return to Master TOC TEST PROCEDURE 1 Remove input power to the V350 PRO 4 Locate the auxiliary transformer See Figure 8 2 Using 5 16 nut driver remove the case wraparound cover 5 Locate the secondary leads and plug P52 See Figure F 8 and F 9 3 Perform the Input Capacitor Discharge detailed earlier in this section FIGURE F 9 Plug Lead Connections Viewed From Transformer Lead Side of Plug 532 42 24 o 5 5 0 815 EIS 2
208. o Fle 5 PEN eis lt 515 2 o x Return to Section Return to Master TOC G 9 SCHEMATIC SWITCH PRINTED CIRCUIT BOARD ELECTRICAL DIAGRAMS V FROM CONTROL FAN CONTADL POSITVE 1 1 1 425 REETIEJER ARD RELAY SIGNAL FROM LDNTRIL BOARD SIFT START SIGNAL FROM CONTROL BOA LONTRUL BOARD DRIVE PWM DRIVE 2 2 1 1 pli 8 S24 ENY17 3N 9 LAPALIT DR PRECHARGE 4 lt j lt 3 ES OFE RECONNECT 206 V F CONVERTER 1 JDDVDL LAPI 569VDC LVDC CHANGE ON 8H 85 VA 1 R d ma 240KHZ 3 32 LAST NU VRED R 145 X 4 12 21 R 2 5 D 52 0 21
209. o Master TOC Q 5 2 5 tc Return to Section TOC Return to Master TOC Q 7 5 16 TROUBLESHOOTING REPAIR INPUT FILTER CAPACITOR DISCHARGE PROCEDURE continued A WARNING ELECTRIC SHOCK can kill Have an electrician install and service this equipment e Turn the input power off at the fuse box before working on equipment Do not touch electrically hot parts Prior to performing preventative maintenance perform the following capacitor discharge procedure to avoid electric shock DISCHARGE PROCEDURE 1 Remove the input power to the V350 PRO 2 Using the 5 16 wrench remove the screws from the case wraparound cover 3 Be careful not to make contact with the capacitor terminals located at the top and bottom of the switch board 4 Obtain a high resistance and high wattage resistor 25 1000 ohms and 25 watts minimum This resistor is not with the machine NEVER USE A SHORTING STRAP FOR THIS PROCEDURE Locate the eight capacitor terminals shown in fig Using electrically insulated gloves and pliers hold the body of the resistor with the pliers and con nect the resistor leads across the two capacitor terminals Hold the resistor in place for 10 sec onds DO NOT TOUCH CAPACITOR TERMINALS WITH YOUR BARE HANDS Repeat the discharge procedure for the other three capacitors
210. ondary voltage s are not correct the auxiliary transformer may be faulty 10 Remove the input power to the V350 PRO 11 Install the case wraparound cover using a 5 16 nut driver V350 PRO LINCOLN 5 F 36 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 36 201 uonoes DOL uonoes uumeg 201 uonoes DOL uonoes 37 37 TROUBLESHOOTING AND REPAIR CURRENT TRANSDUCER TEST WARNING Return to Section TOC Return to Master TOC Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD ojo 515 FEE 8 2 olo DESCRIPTION This test will help determine if the current transducer and associated wiring are functioning tio correctly MATERIALS NEEDED Volt ohmmeter 5 16 Nut Driver Resistive Load
211. onnect switch assembly located at the rear of the machine The reconnect switch connect the two pairs of input capacitors either in a parallel lower voltage or series higher voltage configuration to accommodate the applied input voltage During the precharge time the DC input voltage is applied to the input capacitors through a current limit ing circuit The input capacitors are charged slowly and current limited voltage to frequency converter circuit located on the switch board monitors the capacitor voltages This signal is coupled to the con trol board measure frequency not voltage to check signal When the input capacitors have charged to an acceptable level the control board energizes the input relays that are located on the switch board making all of the input power without current limiting available to the input capacitors If the capacitors become under or over voltage the control board will de ener gize the input relays and the V350 output will be dis abled Other possible faults may also cause the input relays to drop out NOTE Unshaded areas of Block Logic Diagram are the subject of discussion V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC Ojo 515 0 gt 218 5 2 Return to Section Return to Master TOC E 3 E 3 THEORY OF OPERATION FIGURE SWITCH BOARD amp
212. operly Make sure the reconnect switch and jumper lead is configured correctly for the applied input voltage The welding procedure may be drawing too much input current or the duty cycle may be too high Reduce the welding cur rent and or reduce the duty cycle 1 Check the reconnect switches and associated wiring See the Wiring Diagram 2 Perform the Input Rectifier 3 Perform the Main Switch Board 4 Perform the Output Diode Module Test 5 The Input Filter Capacitors may be faulty Check and if any are faulty replace all four CAUTION If for any reason you do not understand the test procedures or are unable to perform the test repairs safely con tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD V350 PRO LINCOLN 5 5 5 TROUBLESHOOTING amp REPAIR TROUBLESHOOTING GUIDE Observe Safety Guidelines detailed in the beginning of this manual PROBLEMS POSSIBLE AREAS OF RECOMMENDED SYMPTOMS MISADJUSTMENT S COURSE OF ACTION OUTPUT PROBLEMS V350 Pro does not have weld 1 Make sure the reconnect switch 1 Check the reconnect switch and ing output The displays are lit is configured correctly for the associated leads for loose or input voltage applied faulty connections See the wiring diagram Return to Section TOC Return to Master TOC 2 Make sure the Weld Terminals Select is
213. oupled to the control board for the Serial See Pulse Width Modulation this section are sent Peripheral Communications SPI supplies A 5VDC to the switch board IGBTs In this manner the digital is used for the RS232 connection supply ly controlled high speed welding waveform is created under input voltage detection and shutdown circuit is and regulated also part of the power board s circuitry The optional 12VDC gas solenoid is powered by the remote board The 28VAC auxiliary is rectified and filtered and applied to the power board The power board utilizing a switching power supply processes the 40VDC input and develops several regulated positive and negative olo e e AND SERIAL PERIPHERAL INTERFACE SPI COMMUNICATIONS 5 5 Main Switch Board 5 AZ o olg T Positive Input p Output 5 Input switch Rectifier current Terminal 5 em 1 d ar Negative Reconnect gt Output oo Switch Terminal OEC EI x 8 M Primary Current Feedback 5 115 0 Fan Supply Input Relay Control z 8 Soft Start Control 5 8 V F Capacitor Feedback 2 S Olo Machine Control Supply E 15VDC 15VDC 5VDC 9 5 AR Board SPI Supply 15VDC 5VDC Control Board 4 E si RS232 Supply 5VDC 85232 5 SPI Communications amp 15VDC 5VDC Supply c Advanced Remote Contro
214. ove leads 201 202 203 204 205 206 207 208 209 from the switch board Note lead terminal locations and washer positions upon removal Locate and disconnect the three harness plugs associated with the main switch board Plugs J20 J21 J22 See Figure F 22 Locate the eight capacitor terminals and remove the nuts using a 7 16 socket or nut driver Note the position of the washers behind each nut for replacement LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 tc Return to Section TOC Return to Master TOC Q 5 61 9 10 11 12 TROUBLESHOOTING amp REPAIR MAIN SWITCH BOARD REMOVAL amp REPLACEMENT continued FIGURE 23 3 16 ALLEN BOLT LOCATION Using a 3 16 allen wrench remove four allen bolts and washers as shown in Figure F 23 At this point the board is ready for removal Carefully remove the board from the 4 nylon mounting pins Note Depress the retaining pins on the sides of the nylon mounts to release the board See Figure F 24 Carefully maneuver the board out of the machine Apply a thin coat of Penetrox A 13 to the IGBT heatsinks on the back of the new switch boards mating surfaces Note Keep compound away from the mounting holes Mount the new board on t
215. peri od V350 PRO LINCOLN 5 D 3 o z o lt om z o E gt z 2 oc o IL o _ 2 ot 560066 z M L o6 0 O0 0 o i 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 0 901 J91Se N 0 201 uonoes 201 uonoes 201 uonoes DOL uonoes uumeg D 4 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH 201 uonoes DOL uonoes uumeg 201 uonoes DOL uonoes Section E 1 Section E 1 TABLE OF CONTENTS THEORY OF OPERATION SECTION E Theory of Operation rr trenta ERROR E E E tC UU RES Section E 9 General DescriptiOri 2 2 E Input Line Voltage Auxiliary Transformer and E 2 c Switch Board and Main E 3 Power board Control Board and SPI 11 E 4 Output Rectifier and ChoKe 5 Thermal Protection oreet ne nectit e er treiben eL E EUR Fe E Ee a e Ende E e n
216. r er FES E a o e c 515 0 PEN gt 93 5 2 1 25 2002 04082 Return to Section Return to Master TOC NOTE This diagram is for reference only It may not be accurate for all machines covered by this manual The wiring diagram specific to your code is pasted inside one of the enclosure panels of your machine LINCOLN B V350 PRO Return to Section Return to Master TOC Return to Section TOC olo o 5 ols 0 12 2 e 5 3 o Return to Section Return to Master TOC Return to Master TOC G 3 SCHEMATIC COMPLETE MACHINE CONSTRUCTION MODELS DO NOT HAVE CB1 CB2 OR REMOTE LEAD 532 GOES TO J22 AND LEAD 541 GOES TO THE CONTROL RECTIFIER IN THE CONSTRUCTION MODEL LINCOLN GREEN YELLOW GND INPUT SWITCH WWE c BROWN 12 D B 3 AUXILIARY TRANSFORMER 200 208 220 230 380 415 1 H2 H3 H4 52 16 gt 42V J52 7 54 152 14 541 24 RECONNECT SWITCH Dashed lines represent copper bus connections Shown connected for 200 240 Volt Input Voltage ELECTRICAL DIAGRAMS SWITCH BOARD 209 FAN CONTROL J20 2 J20 6 lt MAIN input RELAY VIF CONVERTER 2 PULSE 15 J20 4 J20 8 Enhanced Diagram
217. rd Terminals Output Potentiometer GENERAL DESCRIPTION The Invertec V350 Pro is an inverter based welding power source that offers multi mode constant voltage CV and constant current CC welding and is rated at 350 amps 34VDC at a 60 duty cycle The Invertec V350 Pro is available in a construction version no wire feeder connection or auxiliary power a factory ver sion that includes a wire feeder connection and relat ed power an advanced process version and a rack version INPUT LINE VOLTAGE AUXILIARY TRANSFORMER amp PRECHARGE The Invertec V350 Pro can be connected for a variety of three phase or single phase input voltages The ini tial power is applied to the V350 through a line switch located on the front of the machine Two phases of the input voltage are applied to the auxiliary transformer The auxiliary transformer develops four different sec ondary voltages The 115VAC is used to power the fan motor and also is applied to the 14 pin amphenol type connector for wirefeeder operation The 24VAC and 42VAC voltages are also applied to the 14 pin amphe nol type connector to power wirefeeders The 28VAC Advanced Process Panel Mode Display pg Deus Panel is in place Optional Solenoid is rectified and the resultant 40VDC is applied to the power board The input voltage is rectified by the input rectifier and the resultant DC voltage is applied to the switch board through the rec
218. re sensitive to heat input In GMAW P mode arc control adjusts the background current and frequency of the wave When arc control goes up the frequency increases thus increasing the droplet transfer EACH PULSE DELIVERS ONE DROPLET OF WELD MATERIAL 0 gt lt x lt FREQUENCY SPRAY TRANSITION CURRENT V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Ojo O10 515 0 815 218 5 2 a Return to Master TOC B 13 B 13 OPERATION PULSE ON PULSE GMAW PP Pulse on Pulse is a Lincoln process specifically designed for use in welding relatively thin less than 1 4 thick aluminum See the table below It gives weld beads with very consistent uniform ripple In Pulse on Pulse modes two distinct pulse types are used instead of the single pulse type normally used in GMAW P A number of high energy pulses are used to obtain spray transfer and transfer metal across the arc Such pulses are shown in the figure below After a number N of such pulses depending on the wire feed speed used an identical number N of low energy pulses are performed These low energy pulses shown in the figure below do not transfer any filler metal across the arc and help to cool the arc and keep the heat input low N PULSES 1 PULSES LOW HEAT PULSES PEAK AMPS BACKGROUND AMPS
219. rge Procedure detailed earlier in this section Locate the output diode modules and snub ber board See Figure 7 Test all output diode modules individually V350 PRO NOTE This may require the disassembly of the leads and the snubber board from the diode modules Refer to the Output Diode Modules Removal and Replacement Procedure for detailed instructions LINCOLN 5 F 31 32 32 TROUBLESHOOTING amp REPAIR OUTPUT DIODE MODULES TEST continued Figure F 7 Snubber and Output Diode Locations Return to Section TOC Return to Master TOC Output Diode Modules Snubber i T Board 7 Return to Section Return to Master TOC LEFT SIDE olo OJO 5 5 0 815 218 5 2 a Return to Section Return to Master TOC V350 PRO LINCOLN 5 33 33 TROUBLESHOOTING amp REPAIR AUXILIARY TRANSFORMER TEST WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual Return to Section TOC Return to Master TOC If for any reason you do not understand the test procedures or are unable to perform the test repairs safely co
220. rsions with a K936 1 9 14 pin control cable Connect the K936 1 to the MS style connector The TIG Module can also be used with the V350 Pro Construction version A K936 4 control cable is required to supply 115VAC to the TIG Module from an external 115VAC supply General Instructions for Connection of Wire Feeders to V350 Pro Wire feeders other than those listed above may be used provided that the auxiliary power supply rating of the V350 Pro is not exceeded K867 universal adapter plug is required See connection diagram 524985 page F 4 REMOTE CONTROL OF INVERTEC Remote Control K857 Hand Amptrol K963 and Foot Amptrol K870 UNDERCARRIAGE MOUNTINGS MOUNTING HOLE LOCATIONS NOTE MOUNTING SCREWS CAN NOT PROTRUDE MORE THAN 0 5 INCHES INSIDE THE MACHINE 9 9 3 50 s a e 144 20 NUT 4 ee ig 1 m ek re 10 00 o 11 84 4 01 M19527 V350 PRO LINCOLN 5 5 INSTALLATION PARALLEL OPERATION The V350 Pro can be paralleled in CC mode For best results the currents of each machine should be rea sonably well shared As an example with two machines set up in parallel for a 400 amp procedure each machine should be set to deliver approximately 200 amps not 300 amps from one and 100 amps from the other This will minimize nuisance shutdown con ditions In general more than two machines in paral lel will not be
221. s detailed in the beginning of this manual PROBLEMS SYMPTOMS Major physical or electrical damage is evident when the sheet metal cover is removed POSSIBLE AREAS OF MISADJUSTMENT S OUTPUT PROBLEMS 1 Contact your local authorized Lincoln Electric Field Service Facility for technical assistance TROUBLESHOOTING GUIDE RECOMMENDED COURSE OF ACTION 1 Contact the Lincoln Electric Service Department 1 800 833 9353 WELD machine is dead no output no displays Make sure the input line breaker switch is in the ON position Check the 3 5 amp circuit break er CB3 Reset if tripped Check the main input line fuses If open replace Check the 3 5 amp circuit break er CB2 Reset if tripped Check the 6 amp circuit breaker CB1 Reset if tripped Make sure the reconnect switch and jumper lead is configured correctly for the applied input voltage If the machine is being operated with single phase input voltage make sure the red lead is not connected See thel nstallation 1 Perform the Transformer Test 2 Perform the Power Board Test 3 The control rectifier and or asso ciated filter capacitor C5 may be faulty Check and replace as necessary 4 Perform The SPI Cable Resistance and Voltage Test 5 The Control Board may be faulty The main input fuses or breaker repeatedly fail Make certain the fuses or break ers are sized pr
222. s than 100 ohms Less than 100 ohms Return to Master TOC A B C A B C A B C Return to Section TOC Less than 100 ohms Less than 100 ohms Less than 100 ohms Less than 100 ohms Less than 100 ohms Less than 100 ohms Greater than 1000 ohms Greater than 1000 ohms Greater than 1000 ohms OU OU O10 5 0 815 EIS 2 9 If the input rectifier does not meet the 11 If the input rectifier is faulty see the acceptable readings outlined in Table F 2 Input Rectifier Bridge Removal amp the component may be faulty Replace Replacement procedure Note Before replacing the input rectifier 12 Replace the case wraparound cover check the input power switch and per form the Main Switch Board Test Also check for leaky or faulty filter capacitors 10 If the input rectifier is good be sure to reconnect leads 207 207A and 209 to the correct terminals and torque to 31 inch Ibs Apply silicone sealant Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 F 24 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 24 201 uonoes DOL uonoes uumeg 201 uonoes DOL uonoes F 25 F 25 TROUBLESHOOTING amp REPAIR POWER BOARD TEST WARNING Return to Section TOC Return to Master TOC Ser
223. se wraparound cover LINCOLN 5 68 5 LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 68 201 uonoes 901 uumeg 201 uonoes DOL uonoes F 69 F 69 TROUBLESHOOTING amp REPAIR REMOTE BOARD REMOVAL AND REPLACEMENT WARNING Service and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual Return to Section TOC Return to Master TOC If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION The following procedure will aid the technician in removing the status board for maintenance or replacement MATERIALS NEEDED Return to Section TOC Return to Master TOC 5 16 Nut Driver Flathead Screwdriver Phillips Head Screwdriver 5 5 0 815 218 5 2 a This procedure takes approximately 30 minutes to perform
224. sitting kneeling or lying if there is a high risk of unavoidable or accidental contact with the workpiece or ground use the following equipment Semiautomatic DC Constant Voltage Wire Welder DC Manual Stick Welder Welder with Reduced Voltage Control In semiautomatic or automatic wire welding the electrode electrode reel welding head nozzle or semiautomatic welding gun are also electrically hot Always be sure the work cable makes a good electrical connection with the metal being welded The connection should be as close as possible to the area being welded Ground the work or metal to be welded to a good electrical earth ground Maintain the electrode holder work clamp welding cable and welding machine in good safe operating condition Replace damaged insulation Never dip the electrode in water for cooling Never simultaneously touch electrically hot parts of electrode holders connected to two welders because voltage between the two can be the total of the open circuit voltage of both welders When working above floor level use a safety belt to protect yourself from a fall should you get a shock Also see Items 6 c and 8 LINCOLN 5 Also see item 1 b ARC RAYS can burn 4 a Use a shield with the proper filter and cover 2 plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding Headshield and filter lens shou
225. style connector then the remote will default to the 6 pin MS style connector if a remote is connected to it all of the CV modes the WELD TERMINAL con trol will default to REMOTE TIG mode remote will default to the 6 pin MS style if a remote control is connected to the 6 pin MS style and to the 14 pin MS style connector If a remote is not connected to the 6 pin MS style connector then the remote will default to the 14 pin MS style con nector if a remote is connected remote control is connected to any of the MS style connectors the WELD TERMINAL control will default to REMOTE If there are not any remote con trol devices attached the WELD TERMINAL control will default to ON CC Stick modes The remote will default to only the 6 pin MS style connector if a remote is connected to it The WELD TERMINAL control will default to ON with or without a remote connected Types of Remote OUTPUT CONTROL The Invertec V350 Pro s Output Control can be con trolled by either a potentiometer connected between 77 amp 75 with the wiper connected to 76 or a OV to 10V DC supply connected between 76 amp 75 76 needs to be positive 14 Pin Ms style connector lead 75 is pin G lead 76 is pin F and lead 77 is pin E 6 Pin Ms style connector lead 75 is pin C lead 76 is pin B and lead 77 is pin A Potentiometer Control The total resistance should be between 2000 ohms 2K and 10 000 ohms 10K The machi
226. t in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual Return to Section TOC Return to Master TOC If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD DESCRIPTION This test will help determine if any of the output diodes are shorted Return to Section TOC Return to Master TOC MATERIALS NEEDED Analog Voltmeter Ohmmeter Wiring Diagram 5 5 0 815 218 5 2 a This procedure takes approximately 20 minutes perform Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 F 30 F 30 TROUBLESHOOTING amp REPAIR OUTPUT DIODE MODULES TEST continued FIGURE F 5 Machine Output Terminals AMPS CONTROL WELD TERMINALS REMOTE REMOTE LOCAL Gy OUTPUT ON SELECT SELECT Return to Section TOC Return to Master TOC ojlo 9 n m a D L 9 6 SELECT KNOB ADJUST ATTRIBUTE
227. t may be The control board may be faulty faulty CAUTION If for any reason you do not understand the test procedures or are unable to perform the test repairs safely con tact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed 1 800 833 9353 WELD Return to Section TOC Return to Master TOC V350 PRO LINCOLN Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 9 2 5 tc Return to Section TOC Return to Master TOC Q 5 F 6 F 6 TROUBLESHOOTING amp REPAIR Observe Safety Guidelines detailed in the beginning of this manual PROBLEMS SYMPTOMS The machine regularly overheats and the yellow thermal light is ON indicating a thermal overload POSSIBLE AREAS OF MISADJUSTMENT S FUNCTION PROBLEMS 1 Check the 3 5 amp circuit breaker CB2 Reset if tripped The welding application may be exceeding the recommended duty cycle of the V350 Pro Dirt and dust may have clogged the cooling channels inside the machine Air intake and exhaust louvers may be blocked due to inade quate clearance around the machine Make certain the fan as needed FA N is operating properly The fan should operate when welding voltage is present and or when there is an over temperature co
228. the machine See Figure 25 V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o E 5 B Return to Section Return to Master TOC o 7 5 65 F 65 TROUBLESHOOTING amp REPAIR ADVANCED PROCESS PANEL REMOVAL AND REPLACEMENT continued FIGURE F 26 CASE FRONT SCREW REMOVAL AMPS VoLTs CONTROL WELD TERMINALS REMOTE REMOTE LOCAL O gt output ON SELECT SELECT eI LL OI illi Le YEN LESS Flathead Screws QD 5 16 Screws 5 Using a 5 16 nut driver remove the two screws 7 Using a phillips head screwdriver remove the from the bottom of the front of the machine four screws from around the two welder output See Figure F 26 terminals on the front of the machine See Figure F 26 6 Using a flat head screwdriver remove the two screws and their washers from above and 8 The front of the machine may now gently be below the input power switch See Figure pulled forward to gain access to the mode 26 board Note The front of the machine cannot be removed completely only pulled forward a few inches V350 PRO
229. to the inductance of the transformer primary winding The firing of the two switch boards occurs during halves of a 50 microsec ond interval creating a constant 20 KHZ output In some low open circuit Tig modes the firing frequency is reduced to 5KHZ The Invertec V350 Pro has a F A N fan as needed cir cuit The fan operates when the welding output ter minals are energized or when a thermal over tempera ture condition exists Once the fan is activated it will remain on for a minimum of five minutes The fan dri ver circuit is housed on the switch board but it is acti vated from a control board signal NOTE Unshaded areas of Block Logic Diagram are the subject of discussion V350 PRO LINCOLN 5 4 4 THEORY OPERATION FIGURE E 4 POWER BOARD CONTROL BOARD control board the users commands and various machine status messages The software that is con tained within the control board processes and com pares these commands with the voltage and current feedback information it receives from the output cur DC supplies Three DC supplies are fed to the control rent sensor and the output voltage sensing leads The board for machine control supplies Two positive DC appropriate pulse width modulation PWM signals voltages are c
230. two mounting screws and washers from the input bridge See Figure F 37 Remove the input bridge FIGURE F 36 INPUT RECTIFIER LOCATION INPUT RECTIFIER V350 PRO LINCOLN 5 81 81 TROUBLESHOOTING amp REPAIR INPUT RECTIFIER REMOVAL AND REPLACEMENT continued olo ER 5 8 9 Apply a thin coat Penetrox A 13 heatsink com 11 Reconnect the previously removed leads to their 5 pound to point of contact between the input proper locations Torque to 31 inch pounds z rectifier the mounting surface i 12 Cover the input rectifier and its six terminals with 5 10 Secure the new input bridge into its proper posi silicon sealant 2 tion with the two 3 167 allen mounting screws previously removed Torque to 44 inch pounds 13 Replace the case wraparound cover FIGURE F 37 INPUT RECTIFIER CLOSE UP Small Lead H1 To Auxiliary Transformer 3 16 ALLEN BOLTS Return to Section TOC Return to Master TOC 207 207A olo OJO 5 5 0 gt 218 5 2 209 Small Lead 44 FRONT To Circuit Breaker REAR Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 F 82 NOTES LINCOLN 5 o tc xi o e gt 901 Je1Se A 0 901 Je1Se A 0 901 J91Se N 01 901 J91Se N 01 uunjeH F 82 201 uonoes 901
231. ulation is used to describe how much time is devoted to conduction in the posi tive and negative portions of the cycle Changing the pulse width is known as modulation 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 MINIMUM OUTPUT By controlling the duration of the gate signal the IGBT is turned on and off for different durations during the cycle The top drawing in Figure E 7 shows the mini mum output signal possible over a 50 microsecond time period The positive portion of the signal represents one IGBT group conducting for one microsecond The negative portion is the other IGBT group The dwell time off time is 48 microseconds both IGBT groups off Since only two microseconds of the 50 microsecond time period is devoted to conducting the output power is minimized MAXIMUM OUTPUT By holding the gate signal on for 24 microseconds each and allowing only two microseconds of dwell time off time during the 50 microsecond cycle the output is maximized The darkened area under the top curve can be compared to the area under the bottom curve The more dark area that is under the curve indi cates that more power is present IGBT primary lAn IGBT group consists of two modules feeding one transformer winding V350 PRO LINCOLN 5 Return to Master Return to Master TOC Q 7 5
232. use cancer birth defects or other reproductive harm The Above For Diesel Engines The Above For Gasoline Engines ARC WELDING CAN BE HAZARDOUS PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH KEEP CHILDREN AWAY PACEMAKER WEARERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING Read and understand the following safety highlights For additional safety information it is strongly recommended that you purchase copy of Safety in Welding amp Cutting ANSI Standard Z49 1 from the American Welding Society P O Box 351040 Miami Florida 33135 or CSA Standard W117 2 1974 A Free copy of Arc Welding Safety booklet E205 is available from the Lincoln Electric Company 22801 St Clair Avenue Cleveland Ohio 44117 1199 BE SURE THAT ALL INSTALLATION OPERATION MAINTENANCE AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS powered equipment 1 a Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running 3 1 6 Operate engines in open well ventilated areas or vent the engine exhaust fumes outdoors 1 c Do not add the fuel near an open flame weld ing arc or when the engine is running Stop the engine and allow it to cool before refuel ing to prevent spilled fuel from vaporizing on contact with hot engine parts and igniting Do not spill fuel when filling tank If fuel is spilled wipe
233. ut power to the 6 Carefully check for 115VAC at plug 22 pin 2 machine to J22 pin 3 leads 32A to 31B C See Figure 13 WARNING HIGH VOLTAGE IS PRE SENT AT THE MAIN SWITCH BOARD FIGURE F 13 PLUG J22 Fan Lead Lead 32A Lead 31B C Fan Lead Plug J22 V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 tc Return to Section TOC Return to Master TOC Q 5 F 43 7 F 43 TROUBLESHOOTING AND REPAIR FAN CONTROL AND MOTOR TEST continued If the 115VAC is low or not present check cir cuit breaker CB2 located on the front panel If the circuit breaker is OK perform The Check plug 122 circuit breaker CB2 and associated leads for loose or faulty connections See the Wiring Diagram Energize the weld output terminals Select Weld Terminals ON and carefully check for 115VAC at plug J22 pin 1 to J22 pin 4 fan leads If the 115VAC is pre sent and the fan is not running then the fan motor may be faulty Also check the associat ed leads between plug J22 and the fan motor for loose or faulty connections See the Wiring Diagram WARNING HIGH VOLTAGE IS PRESENT AT THE SWITCH BOARD If the 115VAC is NOT present in the previous Step then proceed to the fan control test FAN CONTROL TEST PROCEDURE 1
234. vice and repair should be performed by only Lincoln Electric factory trained personnel Unauthorized repairs performed on this equipment may result in danger to the technician or machine operator and will invalidate your factory warranty For your safety and to avoid electrical shock please observe all safety notes and precautions detailed throughout this manual If for any reason you do not understand the test procedures or are unable to perform the test repairs safely contact the Lincoln Electric Service Department for electrical troubleshooting assistance before you proceed Call 1 800 833 9353 WELD Return to Section TOC Return to Master TOC DESCRIPTION This test will help determine if the power board is receiving the correct voltages and also if the power board is regulating and producing the correct DC voltages MATERIALS NEEDED Volt Ohmmeter 5 16 Nut Driver Wiring Diagram O10 515 0 gt 218 5 2 a This procedure takes approximately 30 minutes perform Return to Section TOC Return to Master TOC V350 PRO LINCOLN 5 Return to Section Return to Master TOC Return to Section TOC Return to Master TOC o 5 tc Return to Section TOC Return to Master TOC o 5 F 26 1 e TROUBLESHOOTING amp REPAIR POWER BOARD TEST CONTINU

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