gala gar SMART 200 TIG PULSE Manual Técnico De Instrucciones página 28

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t1～t2：Striking success, the output current slopes up to the setting current from minimum current (5A); if the
output pulse function is turned on, the slope up current is pulsed;
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t2～t3: During the whole welding process, the gun switch is pressed and held without releasing;
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Note: If the output pulse function is turned on, the output current is pulsed. If the output pulse function is
turned off, the output current is DC current;
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t3：Loosen the gun switch, the output current slopes down; if the output pulse function is turned on, the slope
down current is pulsed;
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t3～t4：The output current slopes down to minimum current (5A), stop arc; adjustment range of down slope
time: 0~5.0S;
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t4～t5：Post flow time, adjustment range of post flow time: 0,1～10.0S;
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t5: Electromagnetic valve is closed and stop argon flowing. Welding is finished.
The operation step of lifting arc:
1. Touch the tungsten electrode with workpiece.
2. Press the welding gun.
3. Lift the welding gun and strike arc.
Output protect function:
In MMA mode, the no-load voltage is 50V; when the welding is beginning, the output voltage will rise to welding
voltage immediately. When the welding is finished, the output voltage will drop to 20V.
Parameter storage function:
All preset parameters will be held.
Short circuit protect function:
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TIG_LIFT 4T or 2T: If the tungesten electrode touches the workpiece when welding, the current will drop to
20A, which can reduce the tungsten spoilage farthestly，prolong the using life of the tungsten electrode，and
prevent tungsten clipping.
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TIG_HF 4T or 2T: If the tungesten electrode touches the workpiece when welding, the current will drop to 0
within 1second, which can reduce the tungsten spoilage farthestly，prolong the using life of the tungsten
electrode，and prevent tungsten clipping.
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MMA: If the electrode touches workpiece over two seconds, the welding current will drop to 0 automatically to
protect the electrode.
Automatically purify gas function::
When TIG welding, turn on the welder and the gas valve is open to output shield gas and maintain 10 seconds.
Eliminate the air and purify the shield gas of the pipe..
3.3.2 Striking arc way for MMA
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Knocking arc: take the electrode upright to touch the workpiece, after forming short circuit, quickly lift up
about 2~4 mm, and arc will be ignited. This method is difficult to master. But in the welding for the brittle or
hard steel, it is better to use knocking way.
electrode
workpiece
Take the electrode upright
SMART 200 TIG PULSE
electrode
upright
workpiece
The Electrode touch the workpiece
electrode
touch workpiece
28
up
2～4mm
Lift up for about 2-4mm