Lincoln Electric IM731 INVERTEC V350-PRO - Manual (Page 15)

B-3 OPERATION B-3
• The Arc Control regulates the Arc Force to adjust
the short circuit current. The minimum setting (-10)
will produce a "soft" arc and will produce minimal
spatter. The maximum setting (+10) will produce a
"crisp" arc and will minimize electrode sticking.
TIG GTAW: The TIG mode features continuous con-
trol from 5 to 425 amps. The TIG mode can be run in
either the TIG touch start or high frequency (optional
equipment required) assisted start mode.
• The Hot Start control selects the starting mode
desired. A setting of less than 5, the TIG lift start
mode is selected. The OCV is controlled below 10v
and the short circuit "TIG touch" current is main-
tained at 25 amps independent of the preset cur-
rent.
When the tungsten is lifted, an arc is initiated and
the output is regulated at the preset value. Hot start
settings between 0 and 5 regulate the arc initiation
current. A setting of 5 results in the most positive
arc initiation. A setting of 0 reduces hot start.
• Hot Start settings between 5 and 10, select high
frequency assisted starting TIG mode. In this
range, the OCV of the machine is controlled
between 50 and 70 volts. If using the Lincoln K930-
1 TIG Module, set the Hot start to 10 for maximum
OCV.
• The Arc Control is not used in the TIG mode.
TIG SOLENOID OPTION
The Solenoid only operates when th V350 is in the
TIG mode. If the Weld Terminals are in “Remote” then
the solenoid will open when the arc start switch is
closed. The solenoid will close after the arc switch has
been opened and the post flow time expired.
If the Weld Terminals are turned “ON”, then the sole-
noid will open when the electrode is touch to the work.
The electrode needs to remain in contact with the
work to allow for gas coverage before attempting to
start the arc. The solenoid will close after the arc has
been broken and the post flow time expired.
CV-WIRE: The CV-WIRE mode features continuous
control from 10 to 40 volts. The mode was intended
for most GMAW, FCAW, and MCAW applications.
• The Hot Start control is not used in the CV-WIRE
mode.
• The Arc Control regulates pinch effect. At the mini-
mum setting (-10), minimizes pinch and results in a
soft arc. Low pinch settings are preferable for weld-
ing with gas mixes containing mostly inert gases. At
the maximum setting (+10), maximizes pinch effect
and results in a crisp arc. High pinch settings are
preferable for welding FCAW and GMAW with CO2.
INVERTEC® V350-PRO
CV-INNERSHIELD: The CV-INNERSHIELD mode
features continuous control from 10 to 45 volts. This
mode was designed for self-shielded flux cored wires
that require tight voltage control.
• The Hot Start control is not used in the CV-INNER-
SHIELD mode.
• The Arc Control regulates pinch effect. At the mini-
mum setting (-10), minimizes pinch and results in a
soft arc. At the maximum setting (+10), maximizes
pinch effect and results in a crisp arc. Most self-
shielded wires work well at an Arc Control setting of 5.