Lincoln Electric SVM101-B service manual Retest After Repair, OCV at rated Input V300-PRO, Output

Page 92

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F-62

TROUBLESHOOTING & REPAIR

F-62

RETEST AFTER REPAIR

Should a machine under test be rejected for any reason requiring the removal of any mechanical part that could affect the machine’s electrical characteristics, or if any electrical components are repaired or replaced, the machine must be retested.

NOTE: 50 Hz machines may be tested using 60 Hz power.

INPUT IDLE AMPS AND IDLE WATTS

 

Input

 

Single Phase

 

 

 

Three Phase

 

 

 

Volts/Hertz

 

Max. Amps

 

Max. Watts

 

Max. Amps

 

Max. Watts

 

 

220/50 or 60

2.75

 

 

425

 

 

2.75

 

 

 

425

 

 

230/60

3.00

 

 

450

 

 

3.00

 

 

 

450

 

 

440/50 or 60

1.38

 

 

425

 

 

 

 

 

 

 

 

 

 

460/60

1.50

 

 

450

 

 

 

 

 

 

 

 

 

 

380/50 or 60

1.67

 

 

425

 

 

 

 

 

 

 

 

 

 

575/60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OCV at rated INPUT: V300-PRO,V300-I

 

 

 

60-75V

 

 

 

 

MAXIMUM ACCEPTABLE OUTPUT AMPS (AT MINIMUM OUTPUT SETTINGS)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Output

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Min. (Max. acceptable), all machines:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CC modes

 

12A @ 10V.

 

(GTAW, SOFT, CRISP)

 

 

 

 

 

 

CV modes

 

20A @ 19V.

 

(FCAW, GMAW)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OUTPUT MINIMUM ACCEPTABLE VOLTS (AT MAXIMUM OUTPUT SETTINGS,

 

 

 

 

WITH FULL LOAD)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Min. Acceptable,

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Max. — All Modes

 

V300-I

 

 

 

V300-PRO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1 phase @ 200A

 

380V

 

 

220/440V

 

 

208V

 

230/460V

575V

 

 

 

 

 

38V

 

 

38V

 

36V

 

 

3 phase @ 300A

 

32V

 

36V

 

34V

 

38V

 

36V

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AUXILIARY TRANSFORMER — 50 Hz or 60 Hz

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

TEST POINTS

 

 

 

 

RANGE

 

 

18 VAC winding to Power Board J7 pins 5 and 6 Welding

 

 

 

 

17-20 VAC

 

 

terminals sw. remote

 

 

 

 

 

 

 

 

 

 

 

24 VAC winding to Control Board J2 pin 4 to lead 212

 

 

 

 

23-26.5 VAC

 

 

STANDARD CODES: (Test at Amphenol)

 

 

 

 

 

 

 

 

24 VAC without load, measure across pins C and D

 

 

 

 

22-25 VAC

 

 

42 VAC without load, measure across pins I and K

 

 

 

 

39-44 VAC

 

 

115 VAC without load, measure across pins A and J

 

 

 

 

109-120 VAC

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

V300-I

Image 92
Contents Invertec Safety Fumes and Gases can be dangerous Electric Shock can killARC Rays can burn Safety Welding Sparks can cause fire or explosionCylinder may explode if damaged IiiPrécautions DE Sûreté Sûreté Pour Soudage a L’ArcMaster Table of Contents for ALL Sections Section A-1 Table of ContentsInstallation Section Installation Three Phase Single Phase3INSTALLATIONA-3 Product Description Electrical InstallationInput Voltage Setup LocationPower Input Connection Connection of Wire Feeders to the InvertecSingle Phase Input Three Phase InputParallel Operation Remote Control of InvertecK900-1 DC TIG Starter Connection Quick Disconnect Plugs 6INSTALLATIONA-6Output Cables Operation Section Section B-1Operation Operating InstructionsDuty Cycle Control Function / OperationMode Switch Full Range Is Is Very Soft, 10 Is Very CrispMeter Polarity Switch Auxiliary PowerAccessories Section Section C-1Accessories Options / AccessoriesMaintenance Section Section D-1Maintenance Input Filter Capacitor Discharge ProcedurePreventive Maintenance Overload ProtectionFigure D.2 Location of Maintenance Components Theory of Operation Section Section E-1Theory of Operation Input Line Voltage & Auxiliary TransformerPrecharge & Protection Circuits Return to Return to Section TOCSwitch Boards Figure E-4 ---SWITCH Circuits & TransformerOutput and Control Circuits Figure E-5 --OUTPUT & Control CircuitsPassive Maximum Output Pulse Width ModulationMinimum Output Thermal Protection Protective CircuitsOverload Protection Troubleshooting & Repair Section Section F-1Troubleshooting & Repair HOW to USE Troubleshooting GuidePC Board Troubleshooting Procedures Matched Parts Additional Information Oscilloscope WarningInput Filter Capacitor CONDITION- ING Feeding Problems DepartmentFeeding Problems See Input Rectifier test See Output Diodes test See Switch Board test V300-I 11TROUBLESHOOTING & REPAIRF-11 Input Filter Capacitor Discharge ProcedureInput Filter Capacitor Discharge Procedure Figure F.I Location of Input Filter Capacitor TerminalsOutput Pilot Circuit Test Test Procedure G2527 J2 J4 J3V300-I Protection Board Output Test Test Procedure Turn Power Switch OFF313 306 J15 275F 311 V300-I Protection Figure F.6 Inserting ProbesCapacitor Balance Test Static Capacitor Test 912 V300-I Switch Board Test Switch Board Test Switch Board Test Table F.3 Snubber Resistor Test Snubber Resistor Test Check Test Result Conclusion Next Test Step Repair ActionOutput Diode Test Test Procedure Output Diode TestInput Rectifier Test Probe Acceptable Meter Reading Table F.5Points Steps Overcurrent Protection Current Trigger Test Overcurrent Protection Current Trigger Test 302 G2527 Control J1 275DControl Overvoltage Protection DC Trigger Circuit Test Overvoltage Protection DC Trigger Circuit Test Figure F.16 PC Boards Removed306 275F 309 310 1J8 #311 1J14 6J6 #302 #313 #275D3J8 2J14 1J6 #301 #305Thermal Protection AC Trigger Circuit Figure F.20 PC Boards Moved for Access Thermal Protection AC Trigger CircuitFigure F.21 Thermal Protection AC Trigger Circuit V300-I Power Board Test Test B Power Board TestTest a Figure F.23 Power Board Test Points Simplified Trigger Circuit Capacitor Removal and Replacement Procedure Capacitor Removal and Replacement ProcedureFigure F.27 -- Removing Capacitor Nuts Figure F.27 Switch Board Removal and Replacement Procedure Switch Board Replacement ProcedureTest After Switch Board or Capacitor Replacement Test After Switch Board or Capacitor Replacement Perform Retest After Repair Output Diode Replacement Procedure 60TROUBLESHOOTING & REPAIRF-60 Output Diode Replacement Procedure61TROUBLESHOOTING & REPAIRF-61 Procedure Diode ModulesRetest After Repair OCV at rated Input V300-PROOutput Min. Acceptable Max. All Modes V300-I V300-PROElectrical Diagrams Section Section G-1Wiring Diagram Entire Machine Code 9826 L8657 #0#Wiring Diagram Entire Machine Code 9827 L8938 ReturnWiring Diagram Entire Machine Code 10036 L9299 Wiring Diagram Entire Machine Code 10037 L9300 $ $Wiring Diagram Entire Machine Code 10132 L9567 SectionWiring Diagram Code Wiring Diagram Entire Machine Code 10133 L9568Wiring Diagram Entire Machine Code 10258 L10189 $& $V300-I Wiring Diagram European Wiring Diagram Entire Machine Code 10336, 10450 L10205Schematic Entire Machine # . $ #$ !#$ #! %&$Schematic Driver PC Board S20216 PC Board Assembly Driver L8660 IdentificationSchematic Driver PC Board S20799 PC Board Assembly Driver DescriptionSchematic Switch PC Board L8440 PC Board Assembly Switch L8441 CAPACITOR, Cemo 2700P 50V 5%Schematic Switch PC Board L10956 PC Board Assembly Switch L10958-1 Reqd IdentificationSchematic Control PC Board G2525 Electrical Diagrams CAPACITOR, Cemo 150P Schematic Protection PC Board M16097 PC Board Assembly Protection L7915-2 DZ1Schematic Power PC Board M16018 PC Board Assembly Power L8033-7 VOLT. REG. & Heat Sink Asbly