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OPERATION | ||||
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5. Output / Parameter Adjust Knob- Allows you to |
| 2 STEP DIAGRAM 1 | ||
continuously adjust the current both in TIG and in Stick |
| (1) | ||
welding. Allows you to change the value, shown on |
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"Digital Display Item 6", of the parameter selected with |
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"Setup/Parameter select button Item 4". |
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6. Digital Display - displays currently set values for |
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each mode or welding parameter. |
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7. Local/Remote push button - Selects the welding |
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current adjusting system: |
| Possible variations of this standard sequence is shown | ||
• from front panel |
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| in (2 step diagram 2). It is possible to press and hold | |||
• from remote control |
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| the TIG torch trigger a second time during downslope | |||
The LED beside the symbol confirms the selection. | ||||
to restart. After the trigger is pressed the output current | ||||
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8. Tig Trigger Sequences - |
| will increase to the welding current. This operation is | ||
| shown in (2 step diagram 2). | |||
For the | ||||
| 2 STEP DIAGRAM 2 | |||
either the |
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the Trigger Mode Push Button. |
| (1) | (2) | |
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With the Trigger Mode switch in the |
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the following welding sequence will occur. This |
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sequence is shown in |
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1. Press and hold the Arc Start Switch to start the | ||
sequence. | ||
With the | ||
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The machine will open the gas valve to start the flow | sequence will occur. | |
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of the shielding gas. After a 0.5 second preflow time, | 1. Press and hold the Arc Start Switch to start the | |
to purge air from the torch hose, the output of the | ||
sequence. | ||
machine is turned ON. At this time the arc is started. | ||
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After the arc is started the output current will be | The machine will open the gas valve to start the flow | |
of the shielding gas. After a 0.5 second preflow time, | ||
increased from the start current to the welding cur- | ||
to purge air from the torch hose, the output of the | ||
rent. Both the start current and increase, or upslope | ||
machine is turned ON. At this time the arc is started. | ||
time are presettable. The default start current is 15 | ||
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amps and the default upslope time is 0.2 seconds. | After the arc is started the output current will be at | |
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2. Release the Arc Start Switch to stop welding. | the Start current. This condition can be maintained | |
as long or as short as necessary. | ||
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The machine will now decrease the output current at |
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a controlled rate, or downslope time, until the Finish | If the Start current is not necessary, do not hold the | |
current, (also commonly referred to as Crater | ||
TIG torch trigger as described at the beginning of this | ||
Current) is reached and the output of the machine is | ||
step. Instead, quickly press and release the trigger. | ||
turned OFF. Both the Downslope Time and the Finish | ||
In this condition, the machine will automatically pass | ||
Current are can be preset. | ||
from Step 1 to Step 2 when the arc is started. | ||
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After the arc is turned OFF, the gas valve will remain | 2. Release the TIG torch trigger to start the main part | |
open to continue the flow of the shielding gas to the | ||
of the weld. | ||
hot electrode and work piece. The duration of this | ||
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postflow shielding gas is adjusted by the Postflow | The output current will be increased from the start | |
Parameter. | ||
current to the welding current. Both the start current | ||
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| and increase, or upslope time are presettable. The | |
| default start current is 15 amps and the default ups- | |
| lope time is 0.2 seconds. | |
INVERTEC® | ||