EWM M3.7X-O Operating Instructions Manual page 38

Functional characteristics
MIG/MAG welding
Spot welding
The ignition time t
1st cycle
• Press and hold torch trigger
• Shielding gas is expelled (gas pre-flows)
• Wire f eed motor runs at "creep speed"
• Arc ignites after the wire electrode makes contact with the workpiece,
welding current is flowing (start program P
• Slope to main program P
• Af ter the set spot time elapses, slope goes to end program P
• Wire f eed motor stop welding.
• Arc is extinguished after the pre-selected wire burn-back time elapses
• Gas post-flow time elapses.
2nd cycle
• Release torch trigger
Releasing the torch trigger (step 2) interrupts the welding process even if the spot time has not
yet elapsed (slope to end program P
38
must be added to the spot time t
start
A
).
END
Figure 5-20
.
2
, spot time starts)
START
.
END
099-5TLPXQ-EW501
15.12.2022