Functional characteristics
TIG welding
099-00T401-EW501
01.02.2022
35
Frequency setting
4s
Figure 5-24
5.1.8 Average value pulse welding
A special feature with average value pulses is that the power source will always maintain the preset
average value. This makes this method especially suitable for welding according to welding procedure
specifications.
To activate average value pulses in conjunction with the metallurgical pulsing variant, the
parameter
in the machine configuration menu must be switched to
.
To activate average value pulses in conjunction with the thermal pulsing variant, the
parameter in the
machine configuration menu must be switched to
.
Once the function is activated, the red signal lights for the main current AMP and secondary current
AMP% light up at the same time.
Average value pulse welding means that the system switches between two currents periodically, with an
average current value (AMP), a pulse current (Ipuls), a balance (
) and a frequency (
) having been
defined first. The predefined ampere current average value is decisive, and the pulse current (Ipuls) is
defined by the
parameter as a percentage of the average current value (AMP). The
parameter is
set in the Expert menu
> see 5.1.11 chapter
.
The pulse pause current (IPP) is not set; the machine control calculates the value instead to ensure that
the average value of the welding current (AMP) is maintained.
Figure 5-25
AMP = main current (average value), e.g. 100 A
Ipuls = pulse current =
x AMP, e.g. 140% x 100 A = 140 A
IPP = pulse pause current
Tpuls = duration of one pulse cycle = 1/
, e.g. 1/100 Hz = 10 ms
= balance
