Lincoln Electric IM808-A manual STT Welding, Figure A.7

Page 29

B-9

OPERATION

B-9

 

 

 

STT WELDING

The pictures illustrate the wave shape of current for the process. They are not drawn to scale, and are intend- ed only for the purpose of showing how the variables effect the waveform.

Trim in the STT mode adjusts the tail out and back- ground portion of the waveform. For open root processes, the tail out is fixed, and the trim affects only the background level. Trim values greater than 1.0 add more energy to the weld and make the weld puddle hotter; trim values less than 1.0 reduce energy to weld A nominal value of 1.0 will work for most applications. (See Figure A.7)

For most programs, peak current is adjusted by arc control, also referred to as wave control. A wave con- trol value of +10.0 maximizes the peak current, while a wave control of -10.0 minimizes peak current. In gen- eral, the peak current is proportional to the arc length. (See Figure A.8)

NOTE: The ranges on Wave Control and Trim are dependent on the weld programs. The values shown are typical ranges.

FIGURE A.7

Current

Time

Current

Time

Trimim 1.50

Trimim 1.00

Trimim 0.50

FIGURE A.8

Wave Control +10.0

Wave Control 0.0

Wave Control -10.0

POWER WAVE 455M/STT (CE)

Image 29
Contents Power Wave 455M/STT California Proposition 65 Warnings SafetyElectric Shock can kill Iii Welding Sparks can cause fire or explosionSûreté Pour Soudage a L’Arc Précautions DE SûretéSafety Safety Thank You Table of Contents Table of Contents Technical Specifications Power Wave 455M/STT CE K2203-2 InstallationHigh Frequency Protection Machine GroundingLifting StackingInput Connection Input Fuse and Supply Wire ConsiderationsElectrode and Work Cable Connections Table A.1Cable INDUCTANCE, and ITS Effects on Pulse Welding Negative Electrode PolarityVoltage Sensing Table A.2 System DescriptionWork Voltage Sensing Electrode Voltage SensingSingle Head Feeder Configuring the SystemSingle Head Boom Feeder UP to 4 Feeders AllowedDual Head Boom Feeder using two single heads Control Cable Specifications Welding with Multiple Power WavesInstallation DIP Switch Settings and Locations Receptacle SpecificationsControl Board DIP Switch Water Flow SensorOperation Safety PrecautionsPower Wave 455M/STT CE Definition of Welding Terms Recommended Processes and Equipment General DescriptionRecommended Equipment Required EquipmentCase Front Layout Power Wave 455M/STT CECase Front Controls Fringe Procedures Nominal ProceduresWelding Adjustments Making a WeldARC Control Welding ModeConstant Voltage Welding Figure A.6 Current Wave Form Pulse Pulse WeldingFigure A.7 STT WeldingFactory Installed AccessoriesField Installed Optional EquipmentRoutine Maintenance MaintenanceHOW to USE Troubleshooting Guide TroubleshootingUsing the Status LED to Troubleshoot System Problems Error Code # Description Indication Error Codes for the PowerwaveContact your local Lincoln Authorized Field Service FacilityIf the Thermal LED is also lit, see Exceeding the 325 amp limit on STT output terminal WFS 455M/STT Power Wave 455M/STT CE Wiring DiagramConnection Diagram Semi-automatic Simple System Connection DiagramPower Wave 455/STT Wire Feeder Work SenseDimension Print Power Wave 455M DiagramsPage Precaucion Aviso DE