Pulser Control (Dx And Lx Models) - Miller DYNASTY 200 DX Owner's Manual

5-9. Pulser Control (DX And LX Models)

Percent (%) Peak
Time Control Setting
(50%)
Balanced
More Time
At Peak
(80%)
Amperage
More Time
At
(20%)
Background
Amperage
3
1
4
Pulsed Output Waveforms
PPS
Bkg Amp
Peak Amp
1 Pulser Control
Pulsing is available only while using
the TIG process, it cannot be se-
lected if the Stick process (see Sec-
tion 5-7) is active. Controls can be ad-
2
justed while welding.
Press switch pad to enable pulser.
ON - When illuminated, this LED in-
dicates the pulser is on.
Press switch pad until desired pa-
rameter LED is illuminated.
To turn Pulser off, press and release
switch pad until the On LED turns off.
2 Encoder Control
3 Ammeter
Turn encoder (see Section 5-2) to se-
lect appropriate value for active pulse
parameter. Value selected is shown
on the ammeter (see Section 5-4).
Also, the ammeter LED for the corre-
sponding unit of measure (%, A, s,
Hz) of the active parameter will be il-
luminated.
See Section 5-16 for all Pulser pa-
rameter ranges.
PPS (Pulses Per Second or Pulse
Frequency) - Control is used to de-
termine appearance of weld bead.
PEAK t - The percentage of each
pulse cycle that can be spent at the
peak amperage level.
BKGND A (Background Amps) - Use
Background Amps control to set the
low pulse of the weld amperage,
which cools the weld puddle and af-
fects overall heat input. Background
Amps is set as a percentage of peak
amperage.
4 Pulsed Output Waveforms
Example shows affect changing the
Peak Time control has on the pulsed
output waveform.
NOTE: Peak amperage is set using
the Amperage control (see Section
5-3). Peak amperage is the highest
welding amperage allowed to occur
in the pulse cycle. Weld penetration
varies directly with peak amperage.
Application:
Pulsing refers to the alternating rais-
ing and lowering of the weld output at
a specific rate. The raised portions of
the weld output are controlled in
width, height, and frequency, forming
pulses of weld output. These pulses
and the lower amperage level be-
tween them (called the background
amperage) alternately heat and cool
the molten weld puddle. The com-
bined effect gives the operator better
control of penetration, bead width,
crowning, undercutting, and heat in-
put. Controls can be adjusted while
welding.
Pulsing can also be used for filler ma-
terial addition technique training.
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