Snap-On MIG225Ai, Manual

Page: 11 / 66

11
ADVANCED SETTING cont'd
• HSA (Automatic Hot Start) .
This function is blocked when function 3L is activated.
Once the function has been enabled, the operator may
adjust the starting current (
Start Curr ) from 10 to 200%
of the welding current (Default 130%). The duration
of this current (
S.C. Time ) may also be adjusted from
0.1 to 10 seconds (default 0,5 sec.). The switching time
(
Slope Time ) between the starting current ( Start Curr )
and the welding current may also be adjusted from 0.1
to 10 seconds (default 0.5 seconds.).
• CRA (crater filler - final crater filling) .
This function is blocked when function 3L is activated.
It is working during welding 2T , 4T and also in
combination with function HSA .
After activating the function, the operator may adjust
the connection time ( Slope Time ) between the welding
current and the crater filling current ( Crater Curr. ) from
0.1 to 10 seconds (default 0.5 seconds.).
The operator may also adjust the crater filling current
(
Crater Curr.
) from 10 to 200% of the welding current
(Default 60%).
The time (
C.C. Time
) of the crater filling duration may
also be adjusted from 0.1 to 10 seconds (default 0.5
seconds).
•
Double Pulse
This type of welding varies the intensity of the current
between two levels and can be included in all synergic
programs.
Before setting welding with a double level, it is
necessary to make a short weld bead, so to define the
wire speed and consequently the current; This step is
recommended to obtain the optimal penetration and
width of the bead for the joint to be made. This type of
welding varies the intensity between two levels.
Before setting the double level welding, it is necessary
to make a short bead to determine the wire speed and
the current to obtain the penetration and the bead
width closest to the type of welding to be made.
The wire feed speed is thus determined (and the
corresponding current); the inch/meters per minute that
will be set will be alternatively added to and subtracted
from this value.
Before start working you should not forget that for a
correct bead, the minimum overlapping between two
“meshes”must be 50%.
Activate the function.
Turn the knob to select the frequency on the display.
Press the knob to change its value (adjustment from
0.5 to 5 Hz).
Turn the knob to select the difference in inch/min of the
double pulse on the display. Press the knob to change
its value (adjustment from 3 to 196 in / min).
Turn the knob to select the double pulse duty cycle
on the display. Press the knob to change its value
(adjustment from 25 to 75%) (default 50%).
Turn the knob to select the arc length of the major
current. Press the knob to change the adjustment value
from -9.9 to 9.9 V (default 0).