Paton ProMIG-200, User Manual

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PATON ProMIG DC MMA/TIG/MIG/MAG
the unit will exit the mode. You can return in the same way, and if you omitted the required
mode of the button, press button 3 again: the functions are switched in a circle;
- use buttons 2 to set the current main parameter, this is the welding current;
- - if necessary, you can adjust additional functions of the welding process (see paragraph
6.1 for the order of switching).
Caution! The TIG torch must be a push- button type, with a Ø13 mm bayonet
connector. Choose the maximum torch current according to your operating requirements.
4.1.4 TIG-2T TORCH BUTTON FUNCTION
This function of the control button is used only if there is an external, independent
non-contact arc striking unit (oscillator), with a built-in gas valve. The torch button wire
connects directly to the oscillator unit. When the button on the torch is pressed, the control
signal is sent to the oscillator unit, which fulfils the function of gas pre-purge
t1 of the
welding zone (opens the gas valve) and with a delay gives a signal to turn on the current
source; at the same moment, a high-frequency high-voltage pulse is sent to strike the arc.
The source triggers all other functions (these will be reviewed in detail in the following
paragraphs) according to the cycle of the welding process given above. After releasing the
button, the source triggers its functions, and at the end, it automatically turns off. The
oscillator unit must trigger the function of gas post-purge
t2 of the welding zone (closes the
gas valve with a delay).
ATTENTION! The oscillator unit MUST have a circuit to protect the output of the inverter
from breakdown by a high-voltage discharge, which it creates at the time of arc striking.
Before use, the protection circuit must be activated.
4.1.5 WELDING PROCESS CYCLE - TIG-4T
t, sec
t, sec