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t3~t4:
Trigger released. Wire feeding stops and current drops to zero. Post-
flow gas will continue for a short period. Note: the gas pre-flow and post-flow
not adjustable in T2 mode.
3.2. 4T Mode
This mode is suited for longer spell welding operations and entail the following:
arc start current, preset current, arc-stop current. The following represents the
current, gas-flow and wire-feed curve when the 4T mode is selected:
0~t1:
Press torch trigger. Gas pre-flow starts.
t1~t2:
Wire feed starts and gas flows.
t2~t3:
Welding operation starts and welding current reaches the arc-start
current. If the trigger is not released, the operation will continue with the start
current.
t3~t4:
Trigger released and the welding current will reach the preset current in
the upslope time.
t5~t7:
Trigger pressed again. Welding current will drop to the arc-ending value
in preset downslope time. If the trigger is not released, the operation will
continue on the arc-ending current value.
t7~t8:
Trigger released. Wire feed stops, current drops to zero. Post gas flow
will continue for a short period of time.
In the 4T mode pre-flow time, arc-start current, upslope time, downslope time,
arc-ending current and post-flow time are adjustable individually.
