OPERATION | ||
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3.Press and hold the TIG torch trigger when the main part of the weld is complete.
The machine will now decrease the output current at a controlled rate, or downslope time, until the Finish current is reached. Both the Downslope Time and the Finish Current are presettable. This Finish cur- rent can be maintained as long or as short as nec- essary.
4.Release the TIG torch trigger.
The output current of the machine will turn OFF and the gas valve will remain open to continue the flow of the shielding gas. The duration of this postflow time is adjusted by the Postflow parameter. This operation is shown in (4 step diagram 1).
4 STEP DIAGRAM 1
(3)(4)
Possible variations of this standard sequence are shown below.
By releasing and
4 STEP DIAGRAM 2
9.Welding selection button - Permits selection of the welding mode. The LED beside the symbol confirm the selection:
•Stick
•TIG DC
•TIG AC
10.Electrode Connection (Negative) - For quick dis- connect system using
11.Remote Control Connector - For the connection of a Lincoln Foot Amptrol, Hand Amptrol or Arc Start Switch. See the ACCESSORIES section for available options.
12.Electrode Connection (Positive) - For quick dis- connect system using
13.Welding Parameter Display - LED’s show which mode or welding parameter is activated for adjust- ment.
•If it is necessary to modify the welding parameters "Item 13":
-Wait four seconds after the LED’s on the panel have gone out, the welding current LED will be lit.
-Press the SETUP/Parameter push button "Item 4"; every time the push button is pressed, one of the LED’s in the diagram “Item 13” comes on (in clockwise sequence) and the value of the parameter appears on the Digital display "Item 6". Stop at the desired parameter.
-Rotate the Output/Parameter Adjust Knob"Item 5" and modify the parameter value.
-Press the SETUP/Parameter "Item 4" push button again to pass to another parameter, or wait five seconds and the Weld Current LED will come on again.
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WELDING PARAMETER DEFAULTS AND RANGES
PARAMETER | VALUE | MIN | MAX | DEFAULT |
START CURRENT | AMPS | 6 | MAX | 15 |
UPSLOPE | SEC. | 0 | 10 | 0.2 |
WELD CURRENT* | AMPS | 6 | MAX | 100 |
DOWNSLOPE | SEC. | 0 | 10 | 1.0 |
FINISH CURRENT | AMPS | 6 | MAX | 8 |
POSTFLOW | SEC. | 0.2 | 60 | 5.0 |
PULSE FREQUENCY | HZ | 0.1 | 500 | 0.5 |
% ON TIME | % | 5 | 95 | 50 |
BACKGROUND CURRENT | % OF WELD CURRENT | 1 | 100 | 20 |
AC FREQUENCY | HZ | 20 | 150 | 100 |
AC BALANCE | % EN | 35 | 85 | 65 |
| (EN = Electrode Negative) |
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MODE |
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| DC TIG |
TRIGGER |
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| 2 STEP |
LOCAL / REMOTE |
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| LOCAL |
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*Maximum Weld Current can be limited by input voltage, Welding Mode, AC TIG waveform and AC TIG frequency.