Lincoln Electric SVM114-C service manual Figure F.11 Control PC Board Codes Above

Page 59

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F-21

TROUBLESHOOTING AND REPAIR

F-21

HALL EFFECT MODULE TEST (continued)

FIGURE F.11 CONTROL PC BOARD (CODES ABOVE 10500)

G3425

555

J1

J3

J4

J2

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4.Apply at least 25 VDC but no more than 100 VDC to the LN-25™ from the electrode cable to the work sensing lead. Observe polarity and set polarity switch.

5.Check for the presence of 12 VDC from lead 512(+) to lead 500(-). If the 12 VDC is not present or low, the control board may be faulty. See Figure F.11or F.11.a.

6.Activate the LN-25™ trigger circuit, make sure the drive motor is running and check for the presence of approximately 6.0 VDC from lead 555(+) to lead 500(-). The value of 6.0 VDC

500 512

represents the correct feedback voltage from the hall effect device to the control board.

7.If the above voltage reading is not correct, the hall effect device may need to be adjusted (see the Maintenance Section) or replaced. See the

Drive Motor and Gearbox Replacement and Access to Hall Effect Module procedure.

NOTE:Machines with L12253-[ ] PC Boards react differently to loss of feedback. Instead of running full speed, the motor voltage is held to approximately 14VDC.

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FIGURE F.11.a CONTROL PC BOARD (CODES ABOVE 10500)

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R108

 

 

 

 

 

C34

 

 

 

 

 

 

 

D55

 

DZ10

 

 

 

 

 

 

 

 

 

 

 

 

 

X5

 

 

 

 

 

 

 

 

 

 

 

R113

D52

D47

C40

C32

R55

R90

R70

C22

D53

R85

 

DZ12

 

DZ17

 

 

 

 

 

 

 

 

 

 

 

 

 

DZ16

DZ15

D49

D51

 

 

C45

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C43

DZ18

 

 

R110

 

X7

 

 

 

R109

 

C47

 

 

 

 

 

R96

 

C37

 

R36

 

 

 

 

 

 

 

 

Q7

R75

 

 

 

 

 

 

 

R84

 

 

 

 

R66

C31

R86

R94

 

 

 

R101

R104

R99

R100

R105

R102

R103

R98

 

 

 

 

 

 

 

C42

 

 

 

 

 

Q8

 

 

 

R112

 

R106

 

D54

 

 

R92

 

 

 

 

C38

 

 

D20

R76

R77

R79

R78

R83

R81

R80

R82

 

T1

 

C36

X6

 

 

 

 

Q1

R65

D19

R62

 

R27

R21

 

R4

C6

D8

R17

R18

R20

R67

CONTROL

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

L12253-4

 

 

DZ1

 

 

 

C30

 

 

 

D7

 

 

 

 

 

 

Q2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D43

D22

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C44

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C35

 

 

 

 

D21

R69

D29

C5

R33

 

R24

R64

 

 

 

 

 

 

 

 

C19

R15

R60

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1

 

 

 

 

 

 

 

 

 

T2

 

 

 

 

 

 

 

 

C41

 

C33

 

D56

 

DZ13

DZ14

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D9

 

 

 

 

D34

R61

 

 

C27

 

R32

R23

R14

 

R63

R59

 

 

 

R68

 

 

R19

R72

D6

 

C21

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DZ4

 

 

R115

D35

 

 

C4

 

D28

C3

C2

D42

 

 

 

 

R91

 

 

 

 

 

 

 

 

C10

R88

R89

R114

 

 

 

R121

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

C17

 

 

 

 

 

 

 

 

 

DZ11

 

 

 

 

 

 

 

 

 

D1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D12

D13

R13

C14

 

R71

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D40

 

D41

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D3

 

D46

 

 

Q10

R119

 

R22

R74

C8

 

D25

 

R9

R48

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Q3

 

DZ3

 

 

 

C18

 

 

R120

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X3

C15

 

 

X2

 

C16

R16

 

C7

 

D24

R7

C12

 

R11

 

D11

 

 

 

 

 

D36

D17

R12

 

C13

D18

 

 

 

 

R6

 

 

 

 

 

R35

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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R107

R97

C24

R95

C20

 

R34

 

 

 

 

 

 

D48

 

 

 

 

 

R37

 

 

 

 

 

 

 

 

 

 

D44

C29

TP1

C39

667

 

621

J1

C1

 

 

 

 

DZ2

 

 

R56

D38

R5

D2

 

 

Q4

 

 

R58

R41

 

 

R1

J3

R38

D27

R73

C9

D39

R31

R116

C48

R117

R118

Q9

 

 

 

D26

R3

D10

D15

D16

R54

R46

 

R47

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

R49

R45

R52

R53

 

 

 

 

 

 

 

 

 

 

 

 

C26

 

 

 

 

 

 

 

 

 

 

 

D37

D14

C23

R25

R26

 

R10

C11

R50

R51

D32

R28

D4

R44

R30

 

Q6

 

D5

R43

R29

Q5

 

 

 

 

 

 

 

 

 

 

 

555

 

R57

 

 

 

 

 

J14

 

 

691

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

D33

 

 

 

 

 

 

 

 

 

 

R111

J4

C46

J2

 

500 512

Contactor

690

LN-25™

Page 58 Page 60
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Page 58 Page 60
Contents Semiautomatic Wire Feeder California Proposition 65 Warnings SafetyCan be dangerous Electric Shock can killFumes and Gases Iii Welding and Cutting Sparks can Cause fire or explosionCylinder may explode if damaged Sûreté Pour Soudage a L’Arc Précautions DE SûretéMaster Table of Contents for ALL Sections Installation Section Table of ContentsCurrentrent InstallationTechnical Specifications LN-25 Wire Feed SpeedPower Source Connection Safety PrecautionsFor GMA GUN and Cables INVERTEC, CV300 and Other Newer Lincoln Power SourcesGUN Cable Connection to Feeder With CV AdapterWork Cable Connection Wire Feed Drive Roll and Guide Tube KitsWeld Cable Connection Electrode Cable ConnectionLN-25 Operation Section Read and Understand Entire Section Before Operating Machine OperationWelding Capability LN-25 Instruments Controls Electrode Polarity SwitchWire Feed Mode Switch Wire Speed Dial and Range SwitchRemote ARC Voltage Control Optional GAS Post PRE-FLOW Timers OptionalWork Clip Lead AWGMounting 10 to 30 LB Spools Sequence of OperationLoading Electrode Mounting 22 to 30 LB READI-REELCOILS6OPERATIONB-6 Loading Wire DriveIdle Roll Pressure Setting Grooves READI-REEL Inside Cage WiresMinimum Arc Volts Presetting Wire Feed SpeedSetting Constant Wire Feed Speed CV Mode Setting ARC Sensing Wire Feed Speed CC ModeMaking a Weld Figure B.4 VV CC Wire Speed SettingCylinder may explode if damaged Procedure AT END of CoilWelding Motor Overload Shutdown Circuit Protection and Automatic ShutdownOvervoltage Shutdown Accessories Section C Accessories SectionTable C.1 AccessoriesLN-25 Option Chart How to use Table C.1GAS Solenoid KIT K430-2 for Codes Optional AccessoriesK434-1 GAS Flow Timer KIT LN-25 Contactor KIT K443-1 for Codes K433 Power Source Remote BOXK432 Remote Control Cable Assembly Remote Output Control Options and Control Cable AssembliesK444, K444-1 or K444-2 Remote Voltage Control KIT K439 Remote Extension Cable AssemblyK625, K626, K627 Remote Control Cable Assembly K624-1 42V Remote Output Control ModuleDIA. Hole Connector Must be Insulated in this AreaTo GUN Switch Connect Leads to Pins a and C Style aMaintenance Section Adjusting Speed Sensor Module MaintenanceRoutine Maintenance Calibration of LN-25 Wire Speed Dial LN-25 Theory of Operation Section Figure E.1 Theory of Operation Block DiagramControl Circuit Operation Input Power CircuitTheory of Operation General DescriptionTrigger Circuit Feedback and Control CircuitsLater Models Optional CircuitsContactor GAS SolenoidControl PC Board Fuses Protective Devices CircuitsLN-25 Troubleshooting and Repair Section HOW to USE Troubleshooting Guide 2TROUBLESHOOTING and REPAIRF-2PC Board Troubleshooting Procedures Troubleshooting and RepairFeeding Problems Feeding Problems Hall Effect For Codes below 10500 only GAS Solenoid Valve and Solenoid PC Board TestTest Description Materials NeededGAS Solenoid Valve Test ProcedureScrew Wire Reel Retaining Collar Case DoorFigure F.2 Solenoid Leads Troubleshooting and Repair PC Board for K430 GAS Solenoid KIT GAS Solenoid Valve and Solenoid PC Board Test512 624A 621 J11LN-25 For Codes Above 10500 only GAS Solenoid Valve and Control PC Board TestFigure F.5 Control BOX Cover Removal For Codes Above 10500 onlyFigure F.6. Solenoid Leads Solenoid LeadsControl PC Board Solenoid Circuitry Test Figure F.7. Applied Voltage Polarity667 555 691 621 500 512 690 G3425LN-25 Hall Effect Module Test 539 G1757 Hall Effect Module TestG2196 539 541 500 Figure F.11 Control PC Board Codes Above LN-25 Wire Drive Motor Test Drive Motor Lead IN-LINE Connector Hall Effect Module Contactor & Contactor PC Board Test Contactor & Contactor PC Board Test Contactor Test ProcedureContactor Coil Leads S20963667 28TROUBLESHOOTING and Repair F-28Contactor PC Board Test J14 LN-25 Tools Required Contactor PC Board ReplacementRepair Procedure Contactor PC Board Replacement33TROUBLESHOOTING and Repair F-33 Figure F.17 Control PC Board Replacement Figure F.21. Control PC Board Codes 9812 and below Control PC Board ReplacementJ14 Figure F.22. Plug Locations for L12253- Control BoardFigure F.24. Control Board Replacement PC Board Screw For Codes below Contactor ReplacementContactor Replacement 40TROUBLESHOOTING and Repair F-40For Codes Above Figure F.26 Phillips Head Screwdriver Wrench Pliers GAS Solenoid Present ReplacementPurge Switch Leads Solenoid Plug J11 GAS Solenoid Valve AND/OR Solenoid PC Board ifFigure F.29. Solenoid Assembly Wiring Codes 9812 and below Figure F.31. GAS Solenoid Assembly for Earlier Codes Phillips Head Screwdriver Wrench Slot Head Screwdriver Mylar Insulation Electrode Cable 48TROUBLESHOOTING and Repair F-48Drive Motor and Gearbox Replacement and Access to Hall Effect ModuleG1757 Figure F.34. Drive Motor Replacement Retest After Repair LN-25 Table of Contents Electrical Diagrams Section Electrical DiagramsOptional 42 Volt Remote Output Control Wiring Diagram Above Code 11140 G4679Wiring Diagram Code 10556 Thru 10500 L10925 Wiring Diagram Code 10100 Thru 10500 L9644 Wiring Diagram below Code 9900 L7545 LN-25 Across the ARC Model Schematic Complete Machine Codes Above 11140 G5366Schematic Complete Machine below Code 9900 only G1833 Schematic Control PC BD Above Code 11140 G4616-5 Schematic Control PC BD Code 10556 Thru 10558 G3424-3 Schematic Control PC BD Code 10100 Thru 10500 G2194 L12253-3 PC Board Assembly Control Abovr Code 11140 L12253-3L12253 G3425 PC Board Assembly Control Code 10556 Thru 10558 G3425-3PC Board Assembly Control Code 10100 Thru 10500 G2196-1 LN-25 Control PC Board Assembly Control below Code 9900 G1757-6Contactor Schematic Contactor PC BD Above Code 10500 M10965Schematic Contactor PC BD Code 10100 Thru 10500 M17621 Electrical Diagrams Electrical Diagrams L10863 PC Board Assembly Contactor Above Code 10500 L10863-1PC Board Assembly Contactor Code 10100 Thru 10500 L9670-1 PC Board Assembly Contactor below Code 9900 L9185-2
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