Lincoln Electric V200-T manual Operation

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