Design and function
MIG/MAG welding
099-005215-EW501
29.06.2011
39
5.7.8
MIG/MAG operating point
The operating point (welding output) is specified using the principle of MIG/MAG one-dial operation, i.e.
the user need only specify the operating point by setting the required wire speed, for example, and the
digital system will calculate the optimum values for welding current and voltage (operating point).
The operating point setting can also be specified using the accessory components such as the remote
control, welding torch, etc.
5.7.8.1
Selecting the display unit
HOLD
AMP
VOLT
PROG
Figure 5-13
The operating point (welding performance) can be displayed as the welding current, material thickness or
wire speed.
Operating
element
Action Result
n x
Switching the display between:
AMP
Welding
current
Material
thickness
Wire
speed
Application example
Aluminium is to be welded.
• Material
=
AlMg,
• Gas
=
Ar
100%,
• Wire diameter = 1.2 mm
The correct wire speed is not known and is to be determined.
• Select the appropriate JOB (see "JOB list" sticker)
• Switch to the material thickness display
• Set the material thickness as appropriate (e.g. 5 mm)
• Switch to the wire speed display
The resulting wire speed will be shown (e.g. 8.4 m/min).
5.7.8.2
Operating point setting using material thickness
Given below is a description of the setting work via the wire speed parameters as an example of
operating point setting.
Operating
element
Action Result
Display
m/min
Increase or reduce welding performance via the
wire speed parameter.
Display example: 10.5 m/min
5.7.8.3
Arc length correction setting
The arc length can be corrected as follows.
Operating
element
Action Result
Display
"Arc length correction" setting
(Display example: -0.9V,
setting range -9.9 V to +9.9 V)
