Everlast POWER MTS 221STi, Руководство оператора

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low, the weld will appear ropey and cold and the
wire may even stub into the puddle. If the volt-
age is set too high, undercut may develop at the
toes of the weld, or burn though may occur.
Voltage is not adjustable in TIG or Stick mode. In
these processes, Voltage is controlled by arc
length. Heat generated by voltage in stick mode
can be managed through consistent feeding of
the rod into the puddle to control the arc length.
7. AC Frequency. The AC Frequency will only be
adjustable in AC TIG or AC Pulse TIG mode. The
AC frequency dictates how fast the welder cycles
between Electrode Negative and Electrode Posi-
tive. On a standard transformer welder, this is a
fixed value, which is 60Hz (Hz= cycles per sec-
ond). But on an inverter this can be adjusted.
On the PowerMTS STi model, the Hertz can be
dialed down to 20 Hz and increased up to 200 Hz.
The helps shape the arc cone width and affects
wet in, penetration, and provides superior arc
stability over 60Hz transformer models. For
more info, see the related section later in this
manual. For a good baseline setting, start at 100
Hz and tune up or down in increments of 5% to
achieve the desired results.
8. AC Balance. The arc force is able to be adjusted
only in AC TIG and AC Pulse TIG modes. This con-
trols the ratio of Electrode Negative (EN) to Elec-
trode Positive (EP) during a single cycle. The
reading is oriented toward 100% EP. 100% EP
provides full cleaning. However, this is not desir-
able as it overheats the tungsten and provides
little to no penetration. For best results the AC
balance should be regulated generally to around
30% EP for best combination of penetration and
cleaning action.
9. Other Features. See the general discussion later
in the manual that pertains to the relevant pro-
cess for more information and an expanded
discussion.
Setup Guide and Component Identification Section 2