Lincoln Electric IM892-C manual Start & Upslope, Crater & Downslope

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B-45	OPERATION	B-45

EXAMPLE 3 - 2 STEP TRIGGER: Customized Arc Start, Crater and Arc End. Sometimes it is advanta- geous to set specific arc start, crater and arc ending parameters for the ideal weld. Many times when welding aluminum crater control is necessary to make a good weld. This is done by setting Start, Crater and Burnback functions to desired values. (See Figure B.21)

For this sequence,

PREFLOW:

Shielding gas begins to flow immediately when the gun trigger is pulled.

RUN-IN:

After preflow time expires, the power source regulates to the start output and wire is advanced towards the work piece at the Run-In WFS. If an arc is not estab- lished within 1.5 seconds, the power source output and wire feed speed skips to the weld settings.

START & UPSLOPE:

As soon as the trigger is released, the wire feed speed and power source output ramp to the crater settings throughout the crater time. The time period of ramping from the weld settings to the crater settings is called DOWNSLOPE.

WELD:

After upslope, the power source output and the wire feed speed continue at the weld settings.

CRATER:

As soon as the trigger is released, the wire feed speed and power source output ramp to the crater settings throughout the crater time. The time period of ramping from the weld settings to the crater settings is called DOWNSLOPE.

CRATER & DOWNSLOPE:

As soon as the trigger is released, the wire feed speed and power source output ramp to the crater settings throughout the crater time. The time period of ramping from the weld settings to the crater settings is called DOWNSLOPE.

BURNBACK:

After the crater time expires, the wire feed speed is turned OFF and the machine output continues for the burnback time.

POSTFLOW:

Next, the machine output is turned OFF and shielding gas continues until the post flow timer expires.

FIGURE B.21

Idle

PulledTrigger

Preflow

Strike

	2 Step Trigger
	Start = ON
	Crater = ON
Arc Established	Burnback = ON

Upslope		Weld

ReleasedTrigger

Downslope

Burnback Postflow Idle

Shielding On
Gas	Off

Power

Weld

1.5 sec max .

Source

Start

Output

Crater

Off

Start time

Crater ti me

B urnback Time

Weld

WFS Crater

Run-in

Off

POWER FEED™ 25M

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Contents Power Feed 25M Safety Electric Shock can kill Iii Welding and Cutting Sparks can Cause fire or explosionPrécautions DE Sûreté On-Line Product Registration Please Examine Carton and Equipment For Damage ImmediatelyTable of Contents Height Width Depth Weight Gearing WFS Range Wire SizesPower Feed 25M Input Voltage ± 10% Input AmperesLocation Safety PrecautionsHigh Frequency Protection Electric Shock can KillCable Connections Arclink Control CablesPIN Weld Cable Size To installCoaxial Weld Cable Table A.1Shielding GAS Connection Electrode PolarityBuild UP of Shielding GAS MAY Harm Health or Kill OFF Changing the Drive Motor Gear RatioProcedure to Install Drive Rolls and Wire Guides Wire Drive ConfigurationLoading Spools of Wire Remote Sense Lead SpecificationsTypical System Configurations Open Circuit Direct CurrentVoltage Input VoltageDuty Cycle Definition of Welding TermsRecommended Processes Recommended Power SourcesEquipment Limitations See Figure B.1 Case Front Controls CodeCase Front Controls Code 11456 Status LED ON-OFF SwitchTable B.1 DefinitionSmaw Stick Welding Making a Weld with Waveform Technology Power SourcesSmaw Stick Welding Display Process ModeMSP4 Operation Three non-synergic welding modes are available NON-SYNERGIC Gmaw and Fcaw WeldingNon-Synergic Gmaw and Fcaw Welding Display MSP4 OperationFigure B.5 Gmaw MIG Synergic WeldingSynergic CV Voltage Display Gmaw MIG Synergic Welding DisplayARC Control Steel and Stainless Synergic GMAW-P Pulsed MIG WeldingSteel and Stainless Synergic GMAW-P Pulsed MIG Welding 220 Figure B.9 Pulse-on-Pulse WeldingAluminum Pulse Welding Aluminum GMAW-P and GMAW-PPFigure B.14 Aluminum GMAW-P and GMAW-PP WeldingWeld Modes Aluminum Pulse and Pulse-On-Pulse Synergic Weld DisplayFigure B.15 GMAW-STT WeldingWeld Modes GMAW-STTBackground Current Figure B.17 Peak Current Figure B.16Tailout Gtaw TIG Welding Figure B.17a Gtaw Tigwelding Figure B.17aFigure B.17b Setup Menu SET-UP Features MenuUser Defined Parameters Stall Factor Adjustment Parameter Definition Procedure Change MethodCrater Delay Parameter Definition Gun Offset AdjustmentReset Consumable Weight TIG Gas ControlParameter Definition Push-Pull Gun Knob Behavior 100 View DiagnosticsSense From Studs Show Test ModesParameter Definition 103 View Software Version Information 107 View Power Source Protocol104 View Hardware Version Information 105 View Welding Software Information504 Mode Select Panel Lock Parameter Definition 503 Memory Button Disable505 Setup Menu Lock 506 Set User Interface Passcode509 UI Master Lockout Parameter Definition 507 UI Clear All MemoriesUser Memories PROCEDURE/MEMORY Panel OPERA- TionParameter Range Units LimitsLimits may be set for MSP4 DisplayLow Limit High LimitParameter Name For Code 11456 and Higher Dual PROCEDURE/MEMORY OperationMemory Set Limits Memory Value 200Description Internal Controls for CodeEscription Internal Controls for Code 11456 and higherLight Switch Cold FEED/GAS Purge SwitchPressure ARM Adjustment Heater SwitchSTEP- Trigger Operation Step Trigger OperationStep Trigger Code 11456 and higherRUN-IN PreflowWeld Burnback UpslopePostflow Crater Start & UpslopeCrater & Downslope Figure B.22 Downslope StartRear Controls DescriptionFlow Meter Operation on Lincnet Power SourcesScfh Liter/MinWire Type Electrode Size KP KIT Factory Installed EquipmentDrive Roll Kits Used K2593-xx #1 Co-Axial Power Cable K2683-xx Heavy Duty ArcLink Control Cable K1500-5 Gun Receiver Bushing compatible Installation of the K590-6 Water Cooling KIT Water Cooled Guns Periodic Maintenance Routine MaintenanceCalibration Specification Troubleshooting Description Possible Adjustments SymptomsOutput Problems Troubleshooting G5585 Wiring Diagram Power Feed 25MDiagrams Dimensions for Code Dimensions for Codes 11456 Precaucion Warnung