Miller Electric 700 manual AC Waveshape Controls, Feature

AC Waveshape Controls

Feature			Waveform		Effect on Bead	Effect on Appearance
AC Balance Control			51 – 99% EN		Reduces balling	Narrow bead, with no
Controls arc cleaning action. Adjusting the					action and helps	visible cleaning
	Amperage			% EP	maintain point
% EN of the AC wave controls the width of		0				Bead
the etching zone surrounding the weld.			% EN
Note: Set the AC Balance control for adequate arc					Deep, narrow
cleaning action at the sides and in front of the weld			Time (1 AC Cycle)		penetration	No Visible Cleaning
puddle. AC Balance should be fine tuned according to
how heavy or thick the oxides are.			30 – 50% EN			Wider bead and
					Increases balling
						cleaning action
	Amperage			% EP	action of the electrode
		0
			% EN			Bead
					Shallow
			Time (1 AC Cycle)		penetration	Cleaning
AC Frequency Control			60 Cycles per Second		Wider bead,	Wider bead and
Controls the width of the arc cone. Increasing	Amperage				good penetration —	cleaning action
			% EN	% EP	ideal for buildup work	Bead
with increased directional control.
the AC Frequency provides a more focused arc		0
Note: Decreasing the AC Frequency softens the arc			Time (1 AC Cycle)
and broadens the weld puddle for a wider weld bead.						Cleaning
		120 Cycles per Second			Narrower bead for	Narrower bead and
					fillet welds and	cleaning action
	Amperage		%	%	automated applications
		0	EP	EP		Bead
			% EN	% EN
			Time (1 AC Cycle)			Cleaning
Independent AC Amperage Control					More current in	Narrow bead, with no
Allows the EN and EP amperage values to be					EN than EP:	visible cleaning
	Current		EP+	EN –	Deeper penetration	Bead
EP amperage to precisely control heat input					speeds
set independently. Adjusts the ratio of EN to		0			and faster travel
to the work and the electrode. EN amperage			Time
controls the level of penetration, while EP						No Visible Cleaning
amperage dramatically effects the arc cleaning
action along with the AC Balance control.					More current	Wider bead and
			EP+		in EP than EN:	cleaning action
	Current				Shallower
		0		EN –	penetration
						Bead
			Time			Cleaning

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