Design and function
MIG/MAG welding
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10.2.2022
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5.3.9 Welding power (operating point)
The welding power is adjusted according to the principle of one-knob operation. The user can set their
operating point optionally as wire feed speed, welding current or material thickness. The optimum welding
voltage for the operating point is calculated and set by the welding machine. If necessary, the user can
correct this welding voltage
> see 5.3.9.2 chapter
.
5.3.9.1 Operating point setting via welding current, material thickness or wire feed speed
?
Figure 5-32
Application example (setting via material thickness)
The required wire feed speed is not known and is to be determined.
• Select welding task JOB 76(
> see 5.3.5 chapter
): material = AlMg, gas = Ar 100%, wire diameter =
1.2 mm.
• Switch the display to material thickness.
• Measure the material thickness (workpiece).
• Set the measured value, e.g. 5 mm, at the machine control.
This set value corresponds to a specific wire feed speed. Switching the display to this parameter will
show the associated value.
In this example, a material thickness of 5 mm corresponds to a wire feed speed of 8.4 m/min.
The material thickness details in the welding programs generally refer to fillet welds in the PB welding po-
sition. They should be regarded as guideline values and may differ in other welding positions.
5.3.9.2 Arc length
When required, the arc length (welding voltage) can be adjusted for the welding task in hand by +/– 9.9 V.
Figure 5-33
5.3.9.3 Accessory components for operating point setting
The operating point can be set at various accessory components as well, such as remote control, special
welding torches or robot and industrial bus interfaces (optional interface for automated welding required,
not available for all machines of this series).
See the operating instructions for the machine in question for a more detailed description of the individual
machines and their functions.
