Optimising The Ignition Characteristics For Pure Tungsten Electrodes; Manual, Standard Operation (Job 0); Job Operation (Job 1 To 7); Automatic Cut-Out - EWM TETRIX 351 AC/DC COMFORT activArc Operating Instructions Manual

Functional characteristics
TIG welding
5.2.2

Optimising the ignition characteristics for pure tungsten electrodes

The best ignition and stabilisation of the arc (DC, AC) and optimum spherical cup formation in the
tungsten electrode depend on the electrode diameter being used.
The set value should correspond to the diameter of the tungsten electrode. The value can of course be
adjusted in line with different requirements.
5.2.2.1

Manual, standard operation (JOB 0)

Operating
element
2,4
1,6 3,2
mm mm
1,0
4>
5.2.2.2

JOB operation (JOB 1 to 7)

Operating
element
5.2.3

Automatic cut-out

The automatic cut-out function will be triggered by two conditions during the welding
process:
During the ignition phase (ignition fault)
• If there is no welding current within 3s after starting the welding.
During the welding phase (arc interruption)
• If the arc is interrupted for longer than 3s.
In both cases, the welding machine ends the ignition or welding process immediately.
32
Action Result
Set diameter of tungsten electrode
• Increase parameter value > more ignition power
• Reduce parameter value > less ignition power
Action Result
Select ignition characteristics parameter
x x
Press until
Set diameter of tungsten electrode
• Increase parameter value: more ignition power
• Reduce parameter value: less ignition power
signal light comes on
NOTE
Item No.: 099-000108-EWM01