Balance/Dig Control - Miller Syncrowave 250 DX Technical Manual

4-12. Balance/DIG Control

Setting
Balanced
3
More Penetration
10
More Cleaning
0
TM-359 Page 42
1
Balance Control Examples
Output Waveforms
50% Electrode
Positive
50% Electrode
Negative
32% Electrode
Positive
68% Electrode
Negative
55% Electrode
Positive
45% Electrode
Negative
(CE Nameplate)
1
Arc
1 Balance/DIG Control
Balance Control (AC GTAW):
Control changes the AC output
square wave. Rotating the control
towards 10 provides deeper pene-
tration. Rotating the control towards
0 provides more cleaning action of
the workpiece.
When the control is in the Balanced
position, the wave shape provides
equal penetration and cleaning
action.
Application:
When welding on oxide forming ma-
terials such as aluminum or magne-
sium, excess cleaning is not neces-
sary. To produce a good weld, only
a minimal amount, approximately a
0.10 in (2.5mm) of etched zone
along the weld toes is required.
Set control to 7 and adjust as nec-
essary. Joint configuration, set-up,
process variables, and oxide thick-
ness may affect setting.
NOTE: Arc rectification can occur
when welding above 200 amps
and/or while welding with helium
gas. If this condition occurs, in-
creasing the Balance control to-
wards maximum penetration, may
help to restabilize the arc.
DIG Control (AC And DC SMAW):
When set at 0, short-circuit amper-
age at low arc voltage is the same
as normal welding amperage.
When setting is increased, short-
circuit amperage at low arc voltage
increases.
Application:
Control helps arc starting or making
vertical or overhead welds by in-
creasing amperage at low arc volt-
age, and reduces electrode sticking
while welding.
Ref. S-0795-A
Syncrowave 250 DX