Manuals / Lincoln Electric / Power Tools / Welder

Lincoln Electric 405M, 355M service manual Schematic Digital Control PC Board #3

Models: 405M 355M

1 137

Download 137 pages 59.31 Kb

Page 130

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Section TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

Return to Master TOC

G-6	ELECTRICAL DIAGRAMS	G-6
SCHEMATIC - DIGITAL CONTROL PC BOARD #3

NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual.

POWER WAVE 355M/405M

Image 130

Lincoln Electric 405M, 355M service manual Schematic Digital Control PC Board #3

Contents

Power Wave 355M/405M Safety Califo Rnia Proposition 65 WarningsFumes and Gases For Electrically LES Machines À Souder À Electromagnetic Compatibility EMC Safety Master Table of Contents for ALL Sections Table of Contents Installation Section Installation Technical Specifications Power WavePower Wave 405 Input Current Safety Precautions Select Suitable LocationNegative Electrode Polarity Voltage SensingTable A.1 System Description Figure A.1Figure A.2 Figure A.3 Figure A.5 Waves Power Wave 355M/405M DIP Switch Settings Locations Control Board DIP SwitchCable INDUCTANCE, and ITS Effects on Pulse Welding Return to Return to Section TOCTable of Contents Operation Section General Description Safety PrecautionsOperation Recommended Processes and EquipmentDuty Cycle and Time Period Required EquipmentLimitations Case Front ControlsFringe Procedures Welding AdjustmentsNominal Procedures Making a WeldConstant Voltage Welding Figure B.2 Current Wave Form CVTIG Gtaw SmawPower Mode ARC GougingPulse Welding GMAW-P Figure B.3Pulse Welding Current Wave Form PulsePULSE-ON-PULSE GMAW-PP Benefits of Pulse on Pulse from Lincoln ElectricTable of Contents Accessories Section Field Installed ACCESSORIESC-2Factory Installed Compatible Lincoln EquipmentTable of Contents Maintenance Section Capacitor Discharge Procedure MaintenanceVisual Inspection Center Panel Power Wave 355M/405M 1TABLE of CONTENTS-THEORY of Operation Section E-1 Input Line Voltage Theory of OperationTRANSFORMER, & Precharge Switch Board Main Transformer 115VAC Fan SupplyPower Board DC BUS BOARD, Power Board and Control Board DC BUS BoardControl Board 5THEORY of Operation Output Rectifier and ChokeOver Current Protection Thermal ProtectionProtective Circuits UNDER/OVER Voltage ProtectionInsulated Gate Bipolar Transistor Igbt Operation Figure E.6 IgbtMaximum Output Pulse Width ModulationMinimum Output 1TABLE of Contents Troubleshooting and Repair F-1 2TROUBLESHOOTING and REPAIRF-2 HOW to USE Troubleshooting GuideTroubleshooting and Repair PC Board Troubleshooting ProceduresAuxiliary Trans Perform the Power Board TestPerform the Main Switch Board Former TestPower Board Test Power BoardSee Fault Code Explanations Board TestBoard Removal Procedure will beFan Motor And Control Perform the T1 Auxiliary transCurrent Transformer Test WFSTroubleshoot System Problems Using the Status LED toLight Condition Indication Error Codes for the Power Wave Status LED Error Code TableTroubleshooting and Repair Power Wave 355M/405M Test Description 13TROUBLESHOOTING and REPAIRF-13Input Filter Capacitor Discharge Procedure Materials NeededDischarge Procedure 15TROUBLESHOOTING and REPAIRF-15 Materials Needed16TROUBLESHOOTING and REPAIRF-16 Test ProcedureMain Switch Board Removal and Replacement Power Wave 355M/405M 19TROUBLESHOOTING and REPAIRF-19 Input Rectifier Test#207 Input Rectifier Bridge Removal & Replacement procedure Test Point Terminals Analog Meter X10 RangePower Wave 355M/405M 23TROUBLESHOOTING and REPAIRF-23 Power Board TestTest Procedure J42 J41 J43Power Board Test Power Wave 355M/405M 27TROUBLESHOOTING and REPAIRF-27 DC BUS Board TestJ47 Table F.4 DC BUS Power Supply PC Board Voltage Table Power Wave 355M/405M 31TROUBLESHOOTING and REPAIRF-31 Output Rectifier Modules Test32TROUBLESHOOTING and REPAIRF-32 Output Rectifier Modules TestDiagram ProbeLeft Side 35TROUBLESHOOTING and REPAIRF-35 Auxiliary Transformer TestAuxiliary Transformer Test Lead Identification Normal Expected Voltage To COM 1A quick connectsPower Wave 355M/405M 39TROUBLESHOOTING and REPAIRF-39 Current Transducer TestPerform the Input Capacitor Discharge Procedure Plug J8Transducer Removal and Replacement Procedure 300 250 200 150 100Power Wave 355M/405M 43TROUBLESHOOTING and REPAIRF-43 FAN Control and Motor TestPerform the Input Filter Capacitor Discharge Procedure FAN Control and Motor TestFAN Control Test Procedure Current Transducer Removal and Replacement ProcedurePower Wave 355M/405M Control Board Removal and Replacement 47TROUBLESHOOTING and REPAIRF-47Description Procedure Control BoardJ10B Mounting 51TROUBLESHOOTING and REPAIRF-51 Main Switch Board Removal & ReplacementMain Switch Board Removal & Replacement Troubleshooting Procedures at the beginning53TROUBLESHOOTING and REPAIRF-53 + +Power Wave 355M/405M Snubber Board Removal and Replacement 55TROUBLESHOOTING and REPAIRF-55Description Snubber Board Removal and Replacement Perform the Input Filter Capacitor Discharge57TROUBLESHOOTING and REPAIRF-57 Power Board Removal and Replacement58TROUBLESHOOTING and REPAIRF-58 Left SideJ42 J41 J43 Power Wave 355M/405M 61TROUBLESHOOTING and REPAIRF-61 DC BUS Board Removal and ReplacementDC BUS Board Removal and Replacement 63TROUBLESHOOTING and REPAIRF-63 J46Troubleshooting and Repair 65TROUBLESHOOTING and REPAIRF-65 Input Rectifier Removal and ReplacementInput Rectifier Removal and Replacement #207A Power Wave 355M/405M Output Rectifier Modules Removal and Replacement Output Rectifier Modules Removal and Replacement con’t Mounting Bolts Allen Power Wave 355M/405M Current Transducer Removal and Replacement 74TROUBLESHOOTING and REPAIRF-74 Current Transducer Removal and Replacement75TROUBLESHOOTING and REPAIRF-75 #206 #202 #207A76TROUBLESHOOTING and REPAIRF-76 Perform the Snubber Board Removal Procedure77TROUBLESHOOTING and REPAIRF-77 Perform the Snubber Board Replacement ProcedureInput Idle Amps and Watts Maximum Output VoltagesTable of Contents Diagram Section Electrical Diagrams Wiring Diagram Powerwave 355/405 G4131Schematic Complete Machine Return to SectionSchematic Digital Control PC Board #1 Schematic Digital Control PC Board #2 Schematic Digital Control PC Board #3 Schematic Digital Control PC Board #4 Schematic Power Supply Printed Circuit Board TOCSchematic Switch PC Board PC Board Assembly Switch PC Board Return to MasterSchematic Snubber PC Board 2000 S24761PC Board Assembly Snubber PC Board N.BSchematic 40 VDC Buss PC Board