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A7 TIG Orbital System 150
© Kemppi Oy 2016
1615
OPERA
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3.8.12 Other screens
Downslope Screen:
move the cursor and enter values with
the control knob. Press Next when complete.
Downslope Delay:
downslope of weld current will occur
immediately at the tie‐in of the start location. If you
want an overlap of the weld, set the desired seconds of
Downslope Delay.
Downslope:
downslope or current taper time period in
seconds.
Pulsing Downslope:
choice of pulse current or steady state
current during downslope period (Yes or No).
Final Amps:
weld current level just prior to arc termination.
Post‐purge:
time period gas flows after arc termination
(seconds).
Auto Rewind:
if this feature is “switched on” (by selecting
Yes on the display), it will cause the weld head to
automatically rewind at completion of a weld and come
to a halt at the starting rotational position. Post‐purge will
also occur simultaneously with auto rewind.
Downslope At Home:
if this function is left off, program
downslope will occur at the time out (completion) of the
final level. If this function is turned ON with the control
knob, program downslope will begin exactly as
Home
position is actuated. (If starting from
Home
position, this
will be one 360° revolution, then downslope will still occur
at 360° Home.
This may override level times. For example, if only
one level of 15 seconds is programmed, for a 1 RPM weld
(requiring 60 seconds), the weld will still be made with
downslope at Home, even though there was inadequate
time to complete the weld in the total level times. If the level
times are longer than 360°, then downslope will still occur at
360° Home.
Parameter Override:
use cursor to select line, the control
knob to modify.
3.8.13 Override Limit function
You may override any of the pre-programmed values,
but only within the limits that may be defined during
programming. The percentage of override limits can be
individually programmed for each parameter between
0–100 % of the programmed value. You can have sufficient
override capacity to compensate for tube fit variations, for
example, but to avoid modifying the original program
outside of specified heat input limitations. The override
limits are saved with each weld so that they allow different
override values based on which the weld is being run.