Everlast PowerTig 200DX-DV Operator's Manual page 18

Section 2
FRONT PANEL FEATURES AND CONTROLS CONTINUED
POWERTIG 200 DX FEATURES
13. AC/DC Selector
14. AC Balance Control
15. AC Frequency Control
16. Arc Force Control (DIG)
17. HF Start/Lift Start/Stick
Switch
18. On/Temperature/ Over Current
29. Amp Control Knob
20. Amp Display
PARAMETERS
AC/DC process Select DC output for Steel, Stainless and most metals.
Select AC output for Aluminum and Magnesium alloys.
30-70% of EP Selects the percent of Electrode Positive (EP) used during AC welding to provide cleaning.
This divides the amount of time that the AC cycle is in Electrode Positive or Electrode Neg-
ative during one full AC cycle. It controls the amount of cleaning and penetration via a
ratio to achieve the best balance while welding on AC. When the control knob is rotated
left, more Electrode Negative is present and more penetration will be achieved. When the
control knob is rotated right, more Electrode Positive is present and more cleaning
(cathodic etching) will be achieved. Too much cleaning action will result in tungsten ball-
ing or splitting, making a larger tungsten necessary for the same amperage range. Too
little cleaning can result in dirty, sooty welds and even a dull weld appearance. NOTE: This
is expressed as a percent of full EP Polarity. This unit uses 100% Electrode Positive as the
reference, which is just the opposite from some other brands. Using the welder in excess
of 50% EP can vaporize the tungsten. It can also reduce the duty cycle of the welder. For
most welds, no more than 45% cleaning is needed. Ideally, start with 30% EP for a refer-
ence point, and adjust it up from there to achieve best results.
20-250 Hz Controls the number of times per second that the current alternates in AC mode. To
achieve greater arc focus (constriction) and increase puddle agitation while welding in AC
mode, increase AC frequency. This allows pinpoint use on thin materials, and helps pene-
tration on thicker materials. Ideal adjustment range is usually 100-150 Hertz. For compari-
son most transformer welders in the US operate on 60 Hz. Greater results can be achieved
through the use of the higher frequency range of this welder. Lower Frequencies will wid-
en and soften the arc but reduce the level of control. WARNING: INCREASING THE AC
FREQUENCY ALSO INCREASES THE DECIBEL / NOISE LEVEL OF THE AC WELDING ARC.
HEARING PROTECTION SHOULD BE WORN!
0-100% Controls the arc response when an arc is held short and voltage begins to drop. Arc force
automatically compensates by modifying the volt/amp curve to maintain the energy need-
ed to weld. Represented as a percent of available amperage.
HF/Lift/ Stick Selects type of TIG start. HF is touch free and activates during start only. Lift start requires
brief touch to metal to draw an arc and is good for areas where sensitive electronics are
present. Also selects Stick welding process.
Indicator/Warning On Indicator: Confirms unit is switched on. Temperature Indicator: Lights up and stops
Or Fault welding output until the welder has cooled within normal limits. Allow 10 minutes before
attempting to reset manually by cycling the power switch. If the light does not go out after
the cool down period by cycling the switch, or if comes on again when the arc is struck,
contact Everlast. Over Current Indicator: Lights up when a voltage /amp surge has sur-
passed the units capabilities. Eliminate the source of the surge and manually cycle the
power switch to reset. If the light remains on after cycling the switch, this may indicate a
unit fault created during the over current event. In this case, contact Everlast.
DC: 5-200 A (TIG) Sets Maximum limit for Amps with foot pedal or torch. Sets higher amp value for pulse.
AC: 20-200 A (TIG) Minimum amps for AC is 20 amps. If working with extremely thin metals is needed and
DC: 5-160 A (Stick) too much penetration is being achieved or arc start is too high at the minimum setting of
AC: 20-160 A (Stick) 20 amps, increase cleaning percent. This will direct more heat on the tungsten, and may
cause balling, and loss of some arc stability, but will reduce the heat placed on the work
and can improve weldability on very light gauge aluminum. (<.020") NOTE: 120 V opera-
tion limits TIG to maximum output to 120 A and Stick to a maximum output of 100 A.
N/A Displays maximum selected amps until the weld is started. Displays actual amps while
welding. Display may cycle rapidly and randomly after pulse has been turned on. This is
normal. The meter "samples" the pulse at a fixed rate and is not synchronized with the
pulse. Immediately after the pulse is turned on, a short delay is built in that prevents the
display from cycling to allow the pulse to be adjusted. Once the adjustment is finished,
pulse will begin to cycle after a few seconds if no input is made.
QUICK SETUP AND USE GUIDE
PURPOSE
18