Lincoln Electric PF26 Operator's Manual page 42

Frequency influences the width of the arc and the
amount of heat input to the weld. If the frequency is
higher:

Improves penetration and the microstructure of the
weld.

The arc is narrower, more stable.

Reduces the amount of heat input to the weld.

Reduces distortions.

Increases welding speed.
Note: Adjust range: from -10 to +10.
The frequency controls the spacing of the ripples in the
weld:

Frequency less than 0,0 – Wide weld and ripple
spacing, slow travel speed. Figure 82 shows the
spacing weld when the frequency is "-10".
-10.0 OFF
-10.0
Figure 82
English

Frequency greater then 0,0 – Narrow weld and
ripple spacing, fast travel speed. Figure 83 shows
the spacing weld when the frequency is "+10"".
-10.0
10.0
10.0
39
OFF 10.0
Figure 83
English