Welding By Manual Operation; Welding Crater Control Enable (Self-Holding Crater Operation) - Panasonic YD-500KR Operating Instructions Manual

WELDING BY MANUAL OPERATION

The following two kinds of welding are allowed by operating the "CRATER ON/OFF" selector switch
on 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.

Welding Crater Control Enable (Self-holding Crater Operation)

Welding with crater control enabled is used for welding a medium-thickness plate in order to
fill up a bead concave at the end of welding.
enable : ON disable : OFF
Operation Procedure
Set the CRATER "ON/OFF" Selector switch to CRATER "ON" and turn on/off the torch switch

twice to perform welding.
Welding Arc Start
Torch Switch ON
Again Operation Timing Chart
Torch Switch
Gas Supply
Wire Feed
Welding Voltage
Welding Current
Welding Condition Adjustment
Thus, operating the torch switch allows self-hold of switch operation and lowers the welding
current 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.
Using only this switch
allows you
start/stop operation.
Welding Arc
Changed
Maintained
Crater
(Self-Hold)
Arc
Torch
Switch OFF
21
to
CRATER
ON/OFF
Selector Switch
to
Welding
Torch Switch
ON Again
Tpf = Gas preflow time
☆ = Arc start timing
★ = Arc stop timing
Welding Arc Stop
Torch Switch
OFF