Operation Manual

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A7 TIG Orbital System 300© Kemppi Oy 2016 1615
OPERATING MANUAL
3.6 Prepurge – Upslope
Move the cursor and enter values with the control knob.
Press Next when nished.
• Prepurge: Time period gas ows at weld start
before arc ignition (seconds).
• Upslope: Time period in seconds that weld
current ramps up from start amps value to level 1
value.
• Travel Delay: Period (seconds) beginning at
end of upslope before rotation begins. Used to
establish penetration.
• Start Amps: Current level at which arc is initiated.
• Start Delay: Arc gap control (AGC) operation start
delay (in seconds after arc initiated).
• Wire Start Delay: Wire feed operation start delay
(in seconds after arc initiated).
• Pulsing: Upslope, choice of pulsed current (Yes) or
stated current during upslope period (No).
Downslope At Home: If this function is OFF, program
downslope occurs at the time out (completion) of the
nal level. If this function is turned ON with the control
knob, program downslope will begin exactly as the Home
position switch is actuated. Because there are 4 possible
Home positions, welding always starts at one of them.
After a full 360° revolution, downslope will occur at 360°
Home.
3.7 Programmed oscillation width
(without striking an arc)
• Test Mode: If a program has already been written,
running the program in Test Mode will cause the
oscillator to move the torch at the programmed
width as it cycles through the program.
• Run Ready Mode:
a) For an existing program, cycle the program to a
level in which oscillation is being used and has a
programmed value.
b) Press the oscillation width "+" key one time.
This will cause the oscillator to weave at the
programmed value.
c) To terminate oscillation, press the "+" key a second
time, which will center the torch.
If you attempt to do the above in a level where there
is no oscillation being used (i.e. the root pass), nothing
happens when you hit the "+" key. However, the system will
be attempting to oscillate with a 0 value. If you attempt to
do anything else at this point, it will appear as if the system
has "locked up". Press the "+" key a second time to exit/
terminate this oscillation width observation mode.
• All other modes of operation: The oscillation
width "+" key cannot be used in most other
modes of operation (for example, when writing
a program) as it will increase the programmed
value.
a) To test the oscillation width in these modes, press
once the AGC Inhibit key in the left-hand bottom
corner of the remote control. This will oscillate the
torch for any level in which oscillation is being
used.
b) Press the AGC Inhibit key a second time to turn o
the oscillator and re-center the torch.