Phoenix 351, 401, 451, 551 Expert puls FDW - EWM Hightec ...
Phoenix 351, 401, 451, 551 Expert puls FDW - EWM Hightec ...
Phoenix 351, 401, 451, 551 Expert puls FDW - EWM Hightec ...
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Design and function<br />
MIG/MAG welding<br />
Spot welding<br />
1. 2.<br />
t<br />
I<br />
P START<br />
Figure 5-13<br />
P A<br />
P END<br />
t<br />
t<br />
NOTE<br />
The ignition time t start<br />
must be added to the spot time t 2<br />
.<br />
1st cycle<br />
• Press and hold torch trigger<br />
• Shielding gas is expelled (gas pre-flows)<br />
• Wire feed motor runs at "creep speed"<br />
• Arc ignites after the wire electrode makes contact with the workpiece,<br />
welding current is flowing (start program P START<br />
, spot time starts)<br />
• Slope to main program P A<br />
• After the set spot time elapses, slope goes to end program P END<br />
.<br />
• Wire feed motor stop welding.<br />
• Arc is extinguished after the pre-selected wire burn-back time elapses<br />
• Gas post-flow time elapses.<br />
2nd cycle<br />
• Release torch trigger<br />
Releasing the torch trigger (step 2) interrupts the welding process even if the spot time has not<br />
yet elapsed (slope to end program P END<br />
).<br />
46<br />
099-004833-EW501<br />
10.07.2012
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