Design and function
TIG welding
40
099-000125-EW501
29.9.2022
4
th
cycle
• Release torch trigger 1.
• The arc extinguishes.
• The gas post-flow time
expires (the shielding gas is shut down).
When the foot-operated remote control is connected, the machine switches automatically to non-
latched operation. The up- and down-slopes are switched off.
Alternative welding start (tapping start):
For the alternative welding start, the durations of the first and second cycle are defined by the set process
times only (tapping the torch trigger in the gas pre-low phase
).
To activate this function, set a two-digit torch mode (11-1x) at the machine control. This function can also
be deactivated completely when required (welding stop by tapping remains active). To do so, the
pa-
rameter must be switched to
in the machine configuration menu
> see 5.8 chapter
.
5.2.8.4 spotArc
This process is suitable for tack welding or joint welding of metal sheets made from steel and CrNi alloys
up to a thickness of approximately 2.5 mm. Metal sheets of different thicknesses can also be welded on
top of one another. As this is a one-sided process, it is also possible to weld metal sheets onto tubular
sections such as round or square pipes. In arc spot welding, the arc melts through the upper metal sheet
and the lower metal sheet is melted onto it. This produces flat, fine-textured welding tacks which require
little or no post weld work, even in visible areas.
The spot welding operating modes (spotArc/spotmatic) can be used with two different intervals, i.e. a
"long" or "short" interval, which are defined as follows:
Interval
Setting range
Up-/down-slope Pulsing AC
Display
Display
Long
0.01–20.0 s (10 ms) Yes
Yes
Yes
Short
5–999 ms (1 ms)
No
No
No
When selecting the spotArc operating mode, the long interval is automatically preselected. When select-
ing the spotmatic operating mode, the short interval is automatically preselected. The user can change
the interval in the Configuration menu
> see 5.8 chapter
.
EXIT
4s
?
Figure 5-22
