Lincoln Electric IM467-B manual Crater Fill Controls

Page 23

B-8

OPERATION

B-8

 

 

 

Example: The Peak Current control is preset at 50 amps and the Amptrol is partially down, giving a peak current of 30 amps. If the Background Current control is set at 50%, the Background (low pulse) current will be 15 amps.

The Amptrol raises and lowers the Peak current. Since Background current is always a percentage of Peak current, the Amptrol also raises and low- ers the Background current.

Pulse % On — Controls the percentage of the pulse cycle that is at the Peak current.

Example: You are pulsing at 1 Pulse per second with a 30% Pulse % On setting. The welding cur- rent would be at the Peak current for 0.3 seconds and at the Background current for the remainder of the cycle, 0.7 seconds.

16.CRATER FILL CONTROLS

Use the Crater Fill controls to automatically control current fade-out at the end of a weld. LOCAL cur- rent control (Item 1) MUST be used when Crater Fill is used.

Crater Fill Switch — A two-position toggle switch.

ON: Crater Fill Fade-out will begin when the Arc Start Switch or Amptrol is released (2-Step mode) or pressed and released a second time (4-Step mode). If used with Spot Time (item 13), Crater Fill begins at the end of the Spot Time. The current control (item 1) switch must be in LOCAL when using Crater Fill.

OFF: Locks out Crater Fill controls.

Fade-out Control — Controls how slowly the cur- rent fades out. The FAST setting will cause current to ramp down from the welding current toward 2 amps in approximately 1/2 second; the SLOW set- ting, in approximately 20 seconds. The time for downslope to the Crater Fill Current level depends on the difference between the weld current and the Crater Fill Current.

Crater Fill % Peak Current Control — Controls the final Crater Fill current from zero to 100% of the weld current preset on the Peak Current con- trol.

Example: WIth a Crater Fill % Current setting of 20% and a weld current preset at 100 amps, the current will fade from 100 amps to 20 amps and then dwell at 20 amps for about 1-1/2 seconds before the arc goes out.

The final Crater Fill current dwell time is approxi- mately 1-1/2 seconds, regardless of Crater Fill control settings.

17.STATUS INDICATOR LEDs — Seven Light Emitting Diodes (LEDs) which light when their function is active.

•GAS & WATER LED is on when the solenoid valves are open, from the beginning of Preflow to the end of Afterflow.

•HIGH FREQUENCY LED is on when the high frequency circuit is on.

FIGURE B.2 – STATUS INDICATOR LIGHT SEQUENCE

SQUARE WAVE TIG 355

SQUARE WAVE TIG 355

Page 22 Page 24
Image 23
Page 22 Page 24
Contents Square Wave TIG Safety Electric Shock can kill Cylinder may explode if damaged Précautions DE Sûreté Thank You Table of Contents P196 Series Section CSection D Section ETechnical Specifications Square Wave TIG InstallationHigh Frequency Interference Protection Safety PrecautionsSelect Suitable Location Electric Shock can kill Input ConnectionsGround Connection Input Supply ConnectionFigure A.2 Input Supply Connections Reconnect ProcedureVolt/Freq AC Output AWG Copper Cond Table A.1 Recommended Input Wire and Fuse SizesTable A.2 Recommended Input Wire and Fuse Sizes Volt/Freq Nameplate AWG Copper Cond100 ft 30 m 30 to 61 m 61 to 76 m Output ConnectionsTIG Torch Connection Lengths up to 100 to 200 ft 200 to 250 ftStick Electrode Cable Connection Operating Instructions Safety InstructionsRecommended Processes Operational Features and ControlsDesign Features and Advantages General DescriptionLimitations Welding CapabilityUpper Case Front Controls Controls and SettingsUpper Case Front Control Panel Mode SwitchSTEP/4-STEP Switch High Frequency SwitchAuto Balance LED VOLTS/AMPS SwitchPeak Current Control AC Wave BalanceStart Controls Spot ControlsPulse Controls Crater Fill Controls Figure B.2 Status Indicator Light Sequence Square Wave TIGOperation Figure B.3 Lower Case Frontcontrols Square Wave TIG Lower Case Front ControlsOperation Hand and Foot Amptrol Operation Operation TIG Welding Guidelines Welding OperationInitial START-UP Stick WeldingTable B.1 Specific Effects of Controls Illustrated in the 2-Step Mode for clarityOFF Crater Fill Switch onSpot Switch on Start Switch onPulse Switch on Crater Fill Switch on Spot Switch OFFDcen Dcep + Unbalanced Wave Balanced Wave Table B.2 Typical Current RANGES1 for Tungsten ELECTRODES2Polarity Switch TIG Welding Sequence Operation 2-STEP ModeTIG Welding Sequence Operation 4-STEP Mode Table B.3 Recommended Settings for TIG WeldingALL Machines Auxiliary PowerOverload Protection OPTIONS/ACCESSORIES AccessoriesInput Power Factor Capacitor Discharge Procedure MaintenanceRoutine and Periodic Maintenance Figure D.2 General Component Locations General Machine Trouble Troubleshooting GuideSymptom Cause and Remedy Troubleshooting Guide Stick WeldingTroubleshooting Guide TIG Welding TIG Welding Lower Panel Controls K870 Foot Amptrol or K963 Hand Amptrol AccessoriesDiagrams Dimension Print Square Wave TIG355 Equipment MANUFACTURER’S Certification Equipment Installation CertificationPage Precaucion Aviso DE
Top Page Image Contents