8
J
- LED - THERMAL PROTECTION
Lights when the operator exceeds the duty cycle or
percentage intermittence admissible for the machine, and
simultaneously blocks the current output.
NOTE:
In this condition the fan continues cooling the
power source.
Y
- LED
This LED must always be lit to ensure safe
welding conditions in AC mode.
AA
- KNOB
Adjusts the welding current. (LED – T) Also, in
combination with the push-button
P
, you may:
- adjust the second level of current LED
V
-adjust the "slope up" LED
S
-adjust the "slope down" L E D
W
- adjust the pulse frequency LED
U
-adjust the post gas LED
X
-adjust the current frequency in AC welding LED
Q
-adjust the wave balance in AC welding LED
R
- adjust the arc striking in relation to the diameter of the
electrode used in TIG AC mode LED
O
.
P
– SELECTOR (Right Arrow)
When this button is pressed, the LEDs light in
succession:
Q
- LED
Current frequency in AC welding (50 - 150 Hz).
Current Frequency Control is enabled only in AC
TIG. Use this control to set the AC frequency
(cycles per second).
Current frequency controls bead width and
directional control. As AC frequency decreases,
weld bead/puddle gets wider. As AC frequency
increases, weld bead/puddle becomes narrower
and the arc becomes more focused. Travel speed
can increase as frequency increases.
R
- LED
Wave balance in AC welding (balance = 0; Cleaning
= from 1 to 8, flashing; Penetration = from 1 to 8,
not flashing).
The Wave Balance
R
feature makes it possible to
vary the half cycles of the square wave when
working in TIG AC when welding aluminum alloys.
The point where the two half-waves meet is zero.
The TIG150i offers 3 positions, Balanced, Cleaning
and Penetration.
Penetration (electrode negative)
– is when the
Wave Balance
R
is set clockwise from the “0”
position with non-flashing numbers between“1 - 8”
on the display
Z
. This is set to produce the more
time at electrode negative and the minimum time at
electrode positive.
This adds the following benefits:
•
Can use higher currents with smaller electrodes.
•
Increased penetration at a given amperage and
travel speed.
•
Use of smaller gas cup and reduced shielding gas
flow rate.
•
Reduced heat input with smaller heat effected zone
and less distortion.
Balanced (zero)
– is when the Wave Balance
R
is
set to “0” position on the display
Z
. This position is
set to produce equal amounts of time electrode
negative (penetration) and electrode positive ). This
will give you less current absorption, reduced
electrode consumption and an ideal ratio between
the width and depth of the welding bead.
Cleaning (electrode positive)
– is when the Wave Balance
R
is set counter-clockwise from the “0” position flashing
numbers between “1 - 8” on the display
Z
.
This is set to
produce more time at electrode positive and the minimum
time at electrode negative. This adds the following benefits:
•
Removes more surface oxides from the plate but
reduces electrode life.
O
– Led
Displays the electrode diameter. The choice
of electrode diameter ranges from 1mm to 4mm (.040 –
5/32”). Use the knob
AA
to change the diameter. This
function is active only for AC TIG welding.
DESCRIPTION OF EQUIPMENT cont’d
