Design and function
TIG Synergic operating principle
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29.07.2015
5.11.9.5 Spotmatic
This function must be enabled before use- See 5.19 Machine configuration menu chapter.
In contrast to the spotarc operating mode, the arc ignites not by pressing the torch trigger as is usual, but
by shortly touching the tungsten electrode against the workpiece. The torch trigger is used for process
activation. The process can be activated separately for each spot or permanently- See 5.19 Machine
configuration menu chapter:
• Separate process activation:
The welding process has to be reactivated for every arc ignition by pressing the torch trigger.
• Permanent process activation:
The welding process is activated by pressing the torch trigger once. The following arc ignitions are
initiated by shortly touching the tungsten electrode against the workpiece.
Selection and adjustment are made in the same way as with spotArc operating mode "- See
5.11.9.4 spotArc chapter".
Figure 5-24
As an example the process is shown with HF ignition. Arc ignition with lift arc is also possible, however-
See 5.9.7 Arc ignition chapter.
Select the process activation type- See 5.19 Machine configuration menu chapter.
Up- and down-slope times possible for long setting range of the spot time (0.01 s - 20.0 s) only.
Press and release torch trigger (tap) to activate the welding process.
Touch the torch gas nozzle and tungsten electrode tip carefully against the workpiece.
Incline the torch over the torch gas nozzle until there is a gap of approx. 2-3 mm between the
electrode tip and the workpiece. Shielding gas flows in the set gas pre-flow time. The arc ignites and
the previously set ignition current (I
start
) flows.
The main current phase ends when the set spotArc time expires.
The welding current drops in the set down-slope time to the end current (I
end
).
The gas post-flow time expires and the welding process ends.
Press and release torch trigger (tap) to reactivate the welding process (only for separate process
activation). Touching the torch with the tungsten electrode tip again against the workpiece will
initiate the next welding processes.
