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4. Operation
4.1 Operating concept for the operating modes
The following operating modes can be selected:
• 2-cycle
• 4-cycle
• Super-4-cycle
• Spot welding/Interval
• External
4.1.1 Operating mode 2-cycle
Operating mode 2-cycle is provided for short manual welds.
1st cycle --> Press and hold torch trigger
• Solenoid valve for shielding gas opens
• Welding voltage is applied on wire electrode
• Wire drive unit starts with reduced speed (inching-in)
• Arc ignites, welding current flows
• Wire drive unit switches to the preset speed
2nd cycle --> Release torch trigger
• Wire drive unit stops
• Weld voltage switches off after expiration of the "burnback time"
• Arc extinguishes
• Solenoid valve closes after expiration of the "gas post-flow time"
Torch
Keystroke
Welding
time
Start time:
3 sec
Gas pre-flow +
inching in
Wire bu
gas post-flow
End crater filling time:
3 sec
Upslope
1 sec
Downslope
2 sec
Main power
1 s
3 s
2 s
3 s
Содержание NexT 452 AC
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