Non-Latched Operation, Version C - EWM T5.00-AC/DC Comfort 3.0 Operating Instructions Manual

Functional characteristics
TIG welding
As an example the process is shown with HF ignition. Arc ignition with lift arc is also possible, how-
ever > see 5.1.7 chapter.
Selecting the process activation type for the welding process > see 5.10 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 start 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.
5.1.8.6

Non-latched operation, version C

1 cycle
st
• Press and hold torch trigger 1. The gas pre-flow time
• The HF ignition pulses jump from the electrode to the workpiece. The arc ignites.
• The welding current flows and immediately moves to the preselected start current value
arc at minimum setting). The HF start is switched off.
2 nd cycle
• Release torch trigger 1.
• The welding current increases at the set up-slope time
Pressing torch trigger 1 starts the slope
leasing the torch trigger starts the slope
rent . This process can be repeated any number of times.
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 of the arc).
The slope times
This operating mode must be enabled (parameter
40
ends when the set
elapses and the welding process ends.
from the main current
from the secondary current
and can be set in the Expert menu > see 5.1.15 chapter.
flows.
spot time elapses.
= ):
within the set down-slope time
Figure 5-22
elapses.
to the main current
to the secondary current
) > see 5.10 chapter.
. The arc igni-
.
(search
.
. Re-
and back to the main cur-
099-00T500-EW501
30.1.2023