Full Product Manual

89
but this unique pulse function expands the capabil-
ity of the unit on both the maximum and minimum
ends of output.
through and speed up welding on thin materials. It
can also help maintain a proper bead prole on a
thin edge weld or prevent burn through on extreme-
ly thin metal. A fast pulse speed will make ne rip-
ples in the weld while a slow pulse speed will give a
much more coarse, but visually appealing result.
There are limitless ways to adjust the pulse. Re-
gardless of how you choose to adjust the pulse,
always keep in mind, that the basic purpose of the
pulse is to average the heat input while maintaining
penetration and welding speed.
AC Pulse TIG operation is the same. Do not con-
fuse AC cycling between EP and EN as pulse. It is
not. You are still adjusting the amperage of the AC
pulse, and skewing the balance and changing the
frequency similarly to the DC pulse.
Advanced Pulse.
The advanced Pulse is designed to be used with
Aluminum only. It features an alternating mix of AC
and DC– during the pulse cycle. The Peak welding
Amp portion of the Pulse is assigned to the AC out-
put. The base Amp portion of the Pulse is assigned
to the DC– polarity. The combination of the two
allows the AC portion of the pulse to provide the
cleaning, while the DC– portion of the pulse can be
used to provide the penetration.
The goal of the Advanced pulse is two fold:
1. This provides a way to greatly extend the weld-
ing capacity of the unit. By setting the DC–
base Amp portion of the Pulse to a high value,
penetration can be greatly increased up to 50%
over normal maximum welding capacity.
2. When DC– is set to a low value, ne control on
thin metals can be achieved with improved bead
prole.
Besides the combination of AC and DC-, with the
DC– being the base portion of the pulse, Pulse time
on and Pulse Frequency serve the same functions
as they do in standard pulse. These are adjusted
the same. However, due to the purpose of the Ad-
vanced pulse, Pulse Frequency is limited to 10 Hz.
It may take practice to master Advanced Pulse,
learning when to time dips, on alternating cycles,
NOTICE:
Both forms of pulse may be used in conjunction
with the Power-Set. However, both forms of pulse
must be rst set in manual mode before engaging
Power-Set mode.
TIG OPERATION AND THEORY
Section 3 Basic Theory and Function