Kemppi MinarcTig 250MLP - Manual (Page 13)

EN
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2.6.1 Welding current regulation and remote control
The welding current can be adjusted steplessly with the control knob, if
panel adjustment (PANEL) is selected.
If you want to adjust the welding current with the remote control, connect
the remote control to the machine and then select remote control with the
current adjustment selector (7). The following remote control options are
available: RTC10, RTC20, R10 and R11F. The remote foot pedal R11F can only
be used with TIG welding in 2T operation mode.
2.6.2 mma welding settings
MMA welding is selected when the indicator next to the MMA symbol is lit.
If needed, press the process selection button to select the MMA process (4).
The machine automatically sets suitable values to the ignition time, ignition
pulse and arc dynamics.
2.6.3 tig welding function
Select the TIG welding process by pressing the MMA/TIG button.
torch switch control in 2t mode and hf arc ignition
The shielding gas starts to flow when the torch switch is pressed and the
welding arc is established automatically via HF ignition. The current starts to
rise (if an upslope time is established) to the set welding current level. When
you release the switch, the current starts to decrease. After the specified
downslope time, the arc is disconnected and the set post-gas time begins.
torch switch control in 4t mode and hf arc ignition
The shielding gas starts to flow when the torch switch is pressed. When the
switch is released, the arc is automatically established via HF ignition. The
current starts to rise (if an upslope time is established) to the set welding
current level. When ready to end the welding cycle, press and release the
torch switch again. The welding current starts to drop (if a downslope time is
established) until the arc is extinguished and the set post-gas time begins.
hf or Contact ignition
The TIG arc can be established with or without an HF pulse.
If the HF indicator is not lit, the arc can be established by lightly contacting
the tungsten electrode to the work piece. Press the torch trigger and then
quickly lift the contact of the tungsten electrode from the work piece (2T
function); the arc is established simultaneously and effectively.
For HF ignition, press the HF button so that the indicator is on (item 6). Press
the TIG torch trigger and hold or release, depending on whether 2T or 4T is
selected. The shielding gas flows and the HF (High Frequency arc) ignites the
welding arc.
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