Pulser Control (Dx And Lx Models) - Miller Maxstar 300 LX Owner's Manual

5-8.

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
OM-2222 Page 28
3
1
4
Pulsed Output Waveforms
PPS
Bkg Amp
Peak Amp
1 Pulser Control
Pulsing is available while using the
TIG process. Controls can be ad-
justed while welding.
2
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 (Set Value)
3 Ammeter (Displays Value)
See Section 5-14 for all Pulser pa-
rameter ranges.
PPS (Pulses Per Second or Pulse
Frequency) Used to determine ap-
pearance 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 to set the low
pulse of the weld amperage, which
cools the weld puddle and affects
overall heat input. Background Amps
is 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 in the
pulse cycle. Weld penetration varies
directly with peak amperage.
Application:
Pulsing is the alternating raising and
lowering of the weld output at a spe-
cific rate. The raised portions of the
weld output are controlled in width,
height, and
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 better control of
penetration, bead width, crowning,
undercutting, and heat input.
frequency, forming