16
MA_QN_MP
Operation
2. Operation
2.1 Operating concept of the operating modes
2.1.1 Operating mode 2-cycles
1st cycle --> Press and hold torch button
•
Solenoid valve for shielding gas opens
•
Weld voltage is applied on wire electrode
•
Wire feed starts with reduced speed (inching-in)
•
Arc ignites, weld current flows
•
Wire feed switches to the preset speed
2nd cycle -->Release torch button
•
Wire feed stops
•
Weld voltage switches off after expiration of the "burnback time“
•
Arc extinguishes
•
Solenoid valve closes after expiration of the "gas post-flow time“
Torches
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
