REHM INVERTIG.PRO 240 DC Betriebsanleitung Seite 88

Torch button 1
Gas valve
Welding current
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Special features.
for 2nd step Pressing the torch button again during the current upslope,
deactivates the arc and the inert gas flows in accordance with the
selected gas post-flow time.
for 3rd step The arc can be deactivated during the downslope time. Releasing
the torch button 1 (TB1) and pressing the torch button 2 (TB2)
before the end crater current is reached deactivates the arc and
the inert gas flows according to the selected gas post-flow time.
3.6.2 2-step function
2-step welding is recommended for fast, controlled tacking and manual spot
welding.
 1. Step: Press the torch button
Magnet valve for inert gas is opened.
The arc is ignited after the set gas pre-flow time
The welding current automatically sets the selected upslope time to the pre-set
value for I based on the set starting current.
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 2. Step: Release torch button
The current reduces with the preset current 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.
Figure 6 Procedure for 2-step welding
Special features.
for 2nd step Pressing the torch button during the current downslope time,
allows the welding current to jump back to I
referred to as manual pulsing (see Chapter 3.5.10). By pressing
the torch button 2 (BT2) cancels the process.
Functional description
t
t
t
. This process is
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