Design and function
TIG welding
099-000109-EW501
23.08.2018
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1st cycle
• Press torch trigger 1
, the gas pre-flow time elapses.
• HF start pulses jump from the electrode to the workpiece. The arc ignites.
• Welding current flows and immediately assumes the set ignition current
(search arc at minimum
setting). HF switches off.
• Ignition current flows at least for the start time
or as long as the torch trigger is held.
2nd cycle
• Release torch trigger 1.
• The welding current ramps up to the main current
(AMP) in the selected upslope time
.
Switching from the main current AMP to secondary current
(AMP%):
• Press torch trigger 2 or
• Tap torch trigger 1 (torch modes 1–6).
If torch trigger 2 is pressed together with torch trigger 1 during the main current phase, the welding cur-
rent decreases to the secondary current
(AMP%) in the set slope time
.
Once torch trigger 2 is released, the welding current increases again to the main current AMP in the set
slope time
. The parameters
and
can be set in the Expert menu (TIG)
> see 5.3.17 chapter
.
3rd cycle
• Press torch trigger 1.
• The main current decreases to the end-crater current
within the set down-slope time
.
Once the main current phase
AMP has been reached, you can shorten the welding sequence by tap-
ping torch trigger 1 (third cycle will be omitted).
4th cycle
• Release torch trigger 1; arc is extinguished.
• Set gas post-flow time
runs.
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 5.13 chapter
.
