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B-3

OPERATION

INVERTEC V300-I

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POWER SWITCH. The POWER SWITCH is located
on the control panel at the rear of the machine. Move
the switch lever to the ON position to energize the
machine. This also activates the DIGITAL METER
and the internal FAN.

OUTPUT CONTROL. This control is used to adjust
the power output of the machine. When the machine
is in the constant voltage mode, this control adjusts
the output VOLTAGE. In the constant current mode, it
adjusts the output CURRENT. One turn of the control
knob covers the total output range. Power output can
be adjusted under both load and no-load conditions.

LOCAL/REMOTE SWITCH. This switch determines
where the power output adjustment can be made, at
the machine or at a remote location. When the switch
is set to LOCAL, the power adjustment can be made
at the machine using the OUTPUT CONTROL. When
this switch is set to REMOTE, the output adjustment
can be made at the wire feeder or the optional
REMOTE CONTROL.

DIGITAL METER SWITCH. The DIGITAL METER
displays welding current or voltage, depending on the
position of the DIGITAL METER SWITCH. When the
switch is set at A (for amps), the display is welding
current. When the switch is set at V (for volts), the dis-
play is welding voltage. When welding is not being-
done, the display indicates the output control setting.
During welding the display indicates the actual weld-
ing current or voltage.

MODE SWITCH. Use this switch to select the type of
welding desired: GTAW, CC Soft, CC Crisp, CV
FCAW, or CV GMAW. The following settings are rec-
ommended:

•

GTAW — Optimized for both scratch start and Hi-
Freq™ kit use.

•

CC Soft — Best for EXX181 thru EXX28 stick elec-
trodes.

•

CC Crisp — Use this mode for stick welding with
EXX10 thru EXX14 electrodes. Non-welding appli-
cations, such as resistive heating or output tests
with resistive loads, should be done in this mode
with Arc Force Control set to minimum.

•

CV FCAW — This setting has been optimized for
Innershield

and Outershield

flux-cored elec-

trodes.

XX refers to tensile strength of electrode (i.e., 60, 70, etc.).

•

CV GMAW — Short circuit, globe and spray trans-
fer solid wire and gas welding are done in this
mode. Low end procedures, less than 16V, may
operate better in the FCAW mode.

OUTPUT TERMINALS SWITCH. This switch lets you
determine how the machine welding terminals will be
energized. Set the switch to the ON position when
using processes or equipment that require energized
machine terminals (stick, TIG, air-carbon arc cutting,
or LN-25 with electrically “hot” gun tip). Set the switch
to REMOTE (OFF) position when using LN-25 with
K431 and K432 options, LN-9GMA or LN-7,
which will allow the gun trigger to energize the welding
terminals.

ARC FORCE & INDUCTANCE CONTROL. This con-
trol is used to adjust the ARC FORCE on constant
current applications and tin INDUCTANCE (pinch
effect) on constant voltage applications. The full
adjustment range is 1 to 10 with 1 being very soft and
10 being very crisp. When adjusting arc force, the low
settings will produce a soft arc and the high settings
will produce a more forceful, or driving, arc. The high
settings will produce higher spatter levels. When the
control is used for FCAW, the maximum setting is
generally preferred. With GMAW, the upper half of the
range (6 to 10) is preferred with CO

or high content

mixed. The lower half of the range (1 to 5) is pre-

ferred for inert gas mixes.

Full range is 1 to 10; 1 is very soft; 10 is very crisp.

1 = lowest pinch, highest inductance, and least spatter.

10 = highest pinch, lowest inductance, and most spatter.

Normal

Recommended

Method

Process

Setting Adjustment Range

EXX18 thru