Spotarc - EWM T4.06-Tetrix AC/DC Smart 2.0 Operating Instructions Manual

1 st cycle
• Press torch trigger 1; gas pre-flow time
• 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.
2 nd cycle
• Release torch trigger 1.
• The welding current ramps up to the main current
Switching from the main current AMP to secondary current
• Press torch trigger 2 or
• Tap torch trigger 1 (torch modes 1–x).
3 rd cycle
• Press torch trigger 1.
• The main current decreases to the end-crater current
4 th cycle
• Release torch trigger 1; arc is extinguished.
• Set gas post-flow time
Ending the welding process immediately without a down-slope or end-crater current:
• Press the 1
st
Current drops to zero and the gas post-flow time begins.
When the foot-operated remote control is connected, the machine switches automatically to non-latched
operation. The up- and down-slopes are switched off.
A double-digit torch mode (11 x) needs to be set at the welding machine control to use the
alternative welding start (tapping start). The number of torch modes available depends on the
machine type.
5.1.5.4

spotArc

This process is suitable for tack welding or joint welding of metal sheets made from steel and CrNi alloys
up to a thickness of approximately 2.5 mm. Metal sheets of different thicknesses can also be welded on
top of one another. As this is a one-sided process, it is also possible to weld metal sheets onto tubular
sections such as round or square pipes. In arc spot welding, the arc melts through the upper metal sheet
and the lower metal sheet is melted onto it. This produces flat, fine-textured welding tacks which require
little or no post weld work, even in visible areas.
The up-slope and down-slope times should be set to "0" to achieve an effective result.
099-00T406-EW501
14.07.2020
runs.
torch trigger briefly > 3
rd
Functional characteristics
elapses.
(AMP) in the selected up-slope time
within the set down-slope time
and 4 cycles (torch modes 11–1x).
th
Figure 5-10
(search arc at minimum
AMP% :
( )
EXIT
4s
TIG welding
.
.
21