Lincoln Electric INVERTEC V200-T - Manual (Page 15)

B-3 OPERATION B-3
Start/Crater Potentiometer - This potentiometer is
used to adjust the START CURRENT and CRATER
CURRENT for TIG welding only. This potentiometer
also adjusts the ARC FORCE when in STICK welding
mode.
Slope Up and Slope Down Time Potentiometers -
These potentiometers are used to adjust the Slope Up
and Slope Down Times respectively for TIG welding
only. The adjustable range for both timers is 0 to 10
sec.
Post Flow Time Potentiometer - This potentiometer
is used to adjust the gas postflow after the arc is extin-
guished when using a TIG process. The postflow time
is 0 - 50 sec.
Pulse Frequency/TIG Spot Timer Potentiometer -
This potentiometer is used to adjust the Pulse
Frequency when the TIG Process Switch is in the
PULSER position and to adjust the TIG Spot Time
when the TIG Process Switch is in the TIG SPOT
position. The Pulse Frequency range available is 300
Hz to 0.5 Hz. The Pulse Frequency on the V200-T is
actually adjusted in terms of the pulse period, which is
the inverse of the frequency. Increasing the knob (cw),
increases the period and because of their inverse
relationship, decreases frequency. Therefore, at the
maximum period setting (fully cw, or “10”) the frequen-
cy is at minimum (0.5 Hz) and at the minimum period
setting (fully ccw or “0”) the frequency is at maximum
(300 Hz). The spot time range is adjustable up to 10
sec.
Pulse Duration Potentiometer - This potentiometer
is active only when the TIG Process Switch is in the
PULSER position. It controls pulse duration or length
of time for pulse within the selected pulse frequency
(see above). Use this potentiometer to select the rela-
tive amount of peak and background current for the
selected overall frequency.
Pulse Amplitude Potentiometer - This potentiometer
is active only when the TIG Process Switch is in the
PULSER position at that time it controls pulse ampli-
tude or height. Use this potentiometer to adjust the
background current as a percentage of the peak (or
maximum) current level.
TIG Process Switch - This switch is used to select
the type of TIG process to be performed. In the
PULSER position - Pulsed TIG welding, in the OFF
position - continuous TIG welding and in the TIG
SPOT position - spot TIG welding.
Welding Process Switch - This switch is used to
select the type of welding process to be performed. In
the 2S position - Two step TIG welding, in the 4S
position - 4 step TIG welding and in the STICK posi-
tion - Stick welding. See the section on 2 step and 4
step explanation later in this section.
LOCAL/REMOTE Switch - This switch is used to
select where current can be adjusted. In the LOCAL
position current is controlled by the Welding Current
Potentiometer. In the REMOTE position any hand or
foot amptrol connected to the Remote Control
Connector will control the current setting. In both
modes, however, the current potentiometer on the
case front sets the maximum welding current avail-
able.
Gas Available LED - This LED will light when gas is
available in the TIG welding modes only.
Power LED - Indicates inverter is ON. After 5 minutes
without use, the inverter will go into a sleep mode and
the LED will go off. Any activity on the output will
immediately “Wake” the inverter up, the LED will come
back on and normal operation will resume.
INVERTEC V200-T