Owner`s manual

OM-2226 Page 34
1 Pulser Control
If the Pulser is off, pressing the switch pad
will enable the pulser, and place it in the
PPS (Pulses Per Second) mode and illu-
minate the On and PPS LEDs. Pressing
the switch again, will first place it in the
Peak Time mode, and then in the Back-
ground Amperage Mode and illuminate the
corresponding LED. If you cycle past
Background Amps, the Pulser will shut off
and default to the Main/Peak Amperage
control. If the Pulser control is on, and you
leave to make changes to other functions,
like Peak/Main Amperage, when you re-
turn and press the Pulser switch pad, you
will start at the PPS function.
2 Encoder Control
3 Parameter Display
Turn encoder (see Section 4-2) to select
appropriate value for active pulse parame-
ter. Value selected is displayed, and the
LED for the corresponding unit of mea-
sure, % or Hz, will be illuminated.
Pulser parameters are as follows:
On - When illuminated, this LED indicates
the pulser is on.
PPS (Pulse Frequency) - Ranges from
.1–500 pps (pulses per second). Control is
used to determine appearance of weld
bead.
Peak Time - A range of 5–95% of each
pulse cycle can be spent at the peak am-
perage level.
BKGND A (Background Amps) - Use
Background Amps control to set the low
pulse of the weld amperage, which cools
the weld puddle and affects overall heat in-
put. Background Amps is set as a percent-
age (5-95%) of peak amperage.
4 Pulsed Output Waveforms
Example shows affect changing the Peak
Time control has on the pulsed output wa-
veform.
NOTE: Peak amperage is set using the
Amperage control (see Section 4-8). Peak
amperage (1–200 amps) is the highest
welding amperage allowed to occur in the
pulse cycle. Weld penetration varies di-
rectly with peak amperage.
Application:
Pulsing refers to the alternating raising and
lowering of the weld output at a specific
rate. The raised portions of the weld output
are controlled in width, height, and fre-
quency, forming pulses of weld output.
These pulses and the lower amperage lev-
el between them (called the background
amperage) alternately heat and cool the
molten weld puddle. The combined effect
gives the operator better control of pene-
tration, bead width, crowning, undercut-
ting, and heat input. Controls can be ad-
justed while welding.
Pulsing can also be used for filler material
addition technique training.
4-10. Pulser Control (DX And LX Models)
1
3
2
Peak Amp
Bkg Amp
Balanced
More Time
At Peak
Amperage
More Time At
Background
Amperage
Pulsed Output Waveforms
Percent (%) Peak
Time Control Setting
(50%)
(80%)
(20%)
PPS
4
CE Models Only