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

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Functional description
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3.5.2.2 TIG spot welding, 4-step
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4-Takt-Punkten
Brennertaster 1
Gasventil
Schweißstrom
Fig. 7: 4-step spot welding procedure

1. Press torch step button
The set gas pre-flow time starts to run and the gas valve opens. The arc is
ignited after the gas pre-flow time has elapsed. The welding current automatically
sets itself to the starting current. The starting current is retained until the torch
button is pressed.
Special features:
The start and end current time cannot be adjusted for 4-step spot welding
The procedure can be aborted at any time by pressing the torch button again, the
inert gas continues to flow in accordance with the selected gas post-flow time.

2. Release torch step button
The welding current automatically sets itself to the pre-selected value after the
upslope time has elapsed. The set spot welding time starts to run. The torch
button does not have to be pressed and released again for the 3rd or 4th step,
since the welding process runs automatically after the 2nd step has been
triggered.
The procedure can be aborted by pressing the torch button again. The
downslope time starts to run, and if the torch button is released during the current
reduction time, the jump to 0A occurs and the inert gas flows in accordance with
selected gas post-flow time.
After the spot welding time has elapsed, the current reduces in accordance with
the preselected downslope time to the value set for the end crater current, and
switches itself off automatically after the final current time has elapsed. The inert
gas flows in accordance with the selected gas post-flow time.
4-step spot welding
Torch Button 1
Gas valve
Welding Current