Panasonic YC-300BP2YAF, Operating Instructions Manual

Page: 39 / 64

Operation
OMCTT5639E09
39
6.4 Welding operation
• The on/off operation of the torch switch enables you to
perform welding as shown in the following diagram.
• Turn the torch switch on with the torch put close to base
material, the high frequency wave comes first, and arc
follows.
• In the case of AC TIG welding and MIX TIG welding,
adjust the AC balance according to the conditions of an
object to be welded.
<Regarding the following diagrams>
• The following diagrams presume the employment of
DC welding. They are based on the premise that each
time period for the pre-flow/post-flow and the up-slope/
down-slope is set to any value other than “0”.
• They assume that the output current is set to pulse
“present”. (In the case of pulse “absent”, there should
be no pulse current or pulse width.)
6.4.1 “No Crater”
6.4.2 ”Crater”
DANGER
• Pressing the torch switch by mistake may cause an electric shock.
• When inspecting or replacing any torch parts, make sure to turn the power
switch off in advance.
Torch switch
Output current
Shield gas
ＯＮ
ＯＦＦ
Pulse current
Welding current
Pre-flow
Post-flow
(No “Self-hold”)
Torch switch
Output current
Shield gas
ＯＦＦ
ＯＮ
ＯＦＦ
ＯＮ
※ 1 ※2 ※3
Pulse current
Welding current
Pre-flow Up slope Down slope Post-flow
Crater current
*1 : When the torch switch is turned OFF (= self-hold starts), the “Up slope” starts.
*2 : When the torch switch is turned ON (=self-hold ends), the “Down slope” starts.
*3 : When the torch switch is turned OFF, the “Post-flow” starts.
Initial
current