REHM INVERTIG.PRO digital 240 DC, 240 AC/DC, Руководство по эксплуатации

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Functional description
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3.8.1 2-step function
2-step welding is recommended for fast, controlled tacking and manual spot
welding.

1st step: Press torch button
Solenoid valve for inert gas is opened.
The arc is ignited after the set gas pre-flow time has elapsed.
The welding current sets itself automatically to the preselected value for I1 during
the selected increase time starting with the selected start current.

2nd step: Release torch button
The current reduces with the preselected downslope time to the value set for the
end crater current, and then switches itself off automatically.
The inert gas flows in accordance with the selected gas post-flow time.
Fig. 21: Procedure for 2-step welding
Special features:
Re. 2nd step By pressing the torch button again during current reduction, the
welding current can be abruptly reset to I1. This procedure is
known as manual pulsing (see chapter 3.6.8). Pressing torch
button 2 (BT2) extinguishes the arc.
3.8.2 4-step function
Continuous button pressing is not required with 4-step welding, which means that
the torch can be guided for a longer time without fatigue.
4-step function procedure:

1st step: Press torch button
Solenoid valve for inert gas is opened.
The arc is ignited after the set gas pre-flow time has elapsed.
The welding current has the value set for the starting current.

2nd step: Release torch button
The welding current automatically sets itself to the pre-selected value for I1
during the preselected upslope time.
Gas valve
Welding current
Torch button 1
t
t
t