Non-Latched Operation, Version C - EWM Tetrix AC/DC Smart 2.0 Operating Instructions Manual

As an example the process is shown with HF ignition. Arc ignition with lift arc is also possible, how-
ever > see 5.1.4 chapter.
Selecting the process activation type for the welding process > see 5.6 chapter.
Up-slope and down-slope times possible for long spot time setting range (0.01–20.0 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 welding 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 during the set gas pre-flow time
tes and the previously set ignition current
 The main current phase
 For long-time spot welding only (parameter
The welding current decreases to the end-crater current
 The gas post-flow time
Press and release the torch trigger (tap) to reactivate the welding process (only for separate
process activation). Touching the welding torch with the tungsten electrode tip against the
workpiece again will initiate the next welding processes.
5.1.5.6

Non-latched operation, version C

1st cycle
•
Press torch trigger 1
•
HF ignition pulses jump from the electrode to the workpiece. The arc ignites.
•
Welding current flows and immediately assumes the set ignition current
setting). HF switches off.
2nd cycle
•
Release torch trigger 1.
•
The welding current ramps up to the main current AMP in the selected up-slope time
Pressing torch trigger 1 starts the slope
leasing the torch trigger starts the slope
rent AMP. This process can be repeated as frequently as required.
The welding process is stopped by interrupting the arc in the secondary current (remove the welding torch
from the workpiece until the arc is extinguished, no re-ignition).
The slope times
This operating mode must be enabled (parameter
099-00T404-EW501
02.07.2020
ends when the set
elapses and the welding process ends.
, the gas pre-flow time elapses.
from main current AMP to secondary current
from the secondary current AMP% and back to the main cur-
and can be set in the Expert menu > see 5.1.11 chapter.
Functional characteristics
flows.
spot time elapses.
= ):
within the set down-slope time
Figure 5-14
) > see 5.6 chapter.
TIG welding
. The arc igni-
.
(search arc at minimum
.
AMP%. Re-
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