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APEX
®
3 SERIES TIG PENDANT MANUAL
The selected sector transition point on the Sector
Setup screen is indicated by the highlighted entry in
the table (red) as well as the highlighted sector pointer
(white) on the perimeter of the pipe. Transition point
selection can be done either by using the Left Toggle
or by pushing the steering knob.
Once selected, a transiton point can be moved by
rotating the steering knob. Adjacent transition points
must be separated by at least 5°. Attempting to move
a transition point in the direction of an adjacent transi-
tion point that has 5° of separation will result in both
transition points moving in order to maintain the mini-
mum separation.
When testing or welding starts, the current weld head
position will determine the starting weld sector and
the weld parameter values associated with that sec-
tor will be in effect at the end of upslope. Once testing
or welding begins, the travel speed and the pipe and
track measurements are used to determine when sec-
tor transition points are reached and the weld param-
eter values transition to those of the next sector.
For the Sector Setup values shown in FIGURE 27 -
Sector Setup Screen, Sector 1 weld parameter values
are set to be in effect from 5° to 95°; Sector 2 weld pa-
rameter values are set to be in effect from 50° to 95°;
Sector 3 weld parameter values are set to be in effect
from 95° to 140°; and Sector 4 weld parameter values
are set to be in effect from 140° wrapping around to 5°.
If a test or weld was initiated with the transition data
shown in FIGURE 27 - Sector Setup Screen, it would
start at the current weld head position of 6° and travel
in a clockwise direction upsloping to the weld param-
eter values associated with sector 1.
Depending on the travel speed and the pipe and track
measurements, the weld head would reach the 50°
mark and the weld would transition to the Sector 2 pa-
rameter values, followed by a transition to the Sector 3
parameter values at the 90° mark, followed by a transi-
tion to the Sector 4 parameter values at the 140° mark,
and unless stopped by the user, would wrap around to
repeat the Sector 1 parameter values at the 5° mark.
The Auto-Sector feature does not currently provide
the option to automatically stop the weld. The user, of
course, can stop the weld at any point during the auto-
sector process. When a test or weld starts with the
auto-sector feature enabled, the progress of the weld
with respect to the current sector number is displayed
on the Test or Weld screen as shown in FIGURE 28 -
Auto Sector Progress.
The current sector number is displayed next to the
sector symbol, in this case '1'. The percentage value
shown above the Peak symbol between the red Wire
Feed and Amperage boxes indicates the proportion of
the current sector remaining.
In FIGURE 28 – Auto-Sector Progress, the weld
parameter values associated with Sector 1 are in effect
and 30% of Sector 1 remains to be traversed at which
time the weld parameter values will automatically tran-
sition to those of Sector 2.
Start Settings
Start settings should be set up after the process
setup has been completed. The start settings screen –
FIGURE 29 - Start Settings Screen – allows the user
to adjust how the system acts when the weld starts.
The start settings take effect as soon as the Start /
Stop button is pressed to initiate the weld. Refer to
page G-53 to see a full timing diagram.
The settings that can be changed on this screen are:
Preflow - The amount of time (sec) that gas flows be-
fore welding begins to ensure adequate gas coverage
for the weld preventing starting porosity.
Upslope - This is the amount of time (sec) it takes for
the system to ramp up from start settings to welding
parameters.
Start Amps -The amperage level commanded at the
beginning of the weld. Level will then ramp to the
welding amperage during Upslope.
Start WFS - The speed at which the wire will feed at
the beginning of a weld. Value will then ramp to the
welding Wire Feed Speed.
WFS Up - The amount of time (sec) taken to ramp from
the Start WFS to the welding WFS.
Wire Start - The amount of time (sec) from the begin-
ning of Upslope until wire begins to feed.
Travel Start - The amount of time (sec) from the begin-
ning of Upslope until the weld head begins to travel.
FIGURE 29 - Start Settings Screen
A-36
OPERATION
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