Adjusting Welding Current, Igniting The Arc; Tig-Comfort-Stop Function - Fronius TransPocket 2500 Instructions De Service

Adjusting wel-
Placing the gas nozzle
ding current,
igniting the arc
(continued)
Fig.6
TIG-Comfort- The „TIG-Comfort-Stop" function (TCS) is only available with the TP 2500 TIG power
Stop function source. The TIG-Comfort-Stop function is deactivated as standard. Activating and setting
the TIG-Comfort-Stop function is described in the „The Set-up menu" section.
If the TIG-Comfort-Stop function is deactivated, crater fill by means of current decrease
or gas shielding of the crater fill does not occur. To finish welding lift the torch away from
the workpiece until the arc goes out.
To finish welding with activated TCS function, proceed as follows:
1.
2.
3.
4.
5.
Weld
Fig.7
Torch settings when welding begins
Weld as normal
During welding, raise torch
- The arc length is increased significantly
Lower the welding torch
- The arc length is decreased significantly
- TIG-Comfort-Stop function is triggered
Keep the torch at the same height
- The welding current continuously decreases until it reaches the minimum wel-
ding current (10 A) (downslope)
- The minimum welding current is held constant for 0.2 seconds
- Arc goes out.
Wait for the gas post-flow time to finish, and lift the torch off the workpiece
Raising torch
TIG Comfort stop
Arc ignites when electrode is
touched down on workpiece
Lowering the torch
11
Raise gas nozzle
Arc ignites
Maintaining height