Panasonic YD-500KR Operating Instructions Manual

Also see for YD-500KR: Operating instructions

21WELDING BY MANUAL OPERATIONWelding Crater Control Enable (Self-holding Crater Operation)Welding with crater control enabled is used for welding a medium-thickness plate in order tofill up a bead concave at the end of welding.enable : ON disable : OFFOperation Procedure Set the CRATER “ON/OFF” Selector switch to CRATER “ON” and turn on/off the torch switchtwice to perform welding.Again Operation Timing ChartThus, operating the torch switch allows self-hold of switch operation and lowers the weldingcurrent at the end of welding to enable crater treatment.If arc discontinues for 0.5 second or more during welding, however, self-hold will be cancelled.The following two kinds of welding are allowed by operating the “CRATER ON/OFF” selector switchon the operation panel and the torch switch.Be sure to read “Duty cycle” on Page 22, and observe a duty cycle in using the equipment.Using only this switchallows you tostart/stop operation.CRATERON/OFFSelector SwitchWelding Arc Start Welding ArcMaintained(Self-Hold)Changed toCrater WeldingArcWelding Arc StopTorch Switch ONTorchSwitch OFFTorch SwitchON Again Torch SwitchOFFTorch SwitchGas SupplyWire FeedWelding VoltageWelding CurrentWelding Condition AdjustmentTpf = Gas preflow time☆ = Arc start timing★ = Arc stop timing