Average Value Pulsing - EWM T 4.00 - AC/DC Comfort 2.0 Operating Instruction

Welding procedure
TIG welding

4.1.10.3 Average value pulsing

Average value pulsing is a variant of pulsing, with the particularity that the power source will always
maintain the preset average value. This makes this method especially suitable for welding according to
welding procedure specifications.
The parameter
variant. See the "Metallurgical pulsing" pulse variant for other parameter settings.
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, an
average current value (AMP), a pulse current (Ipuls), a balance (
defined first. The predefined ampere current average value is decisive, the pulse current (Ipuls) is defined
by the parameter as a percentage of the average current value (AMP).
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. For average value pulsing, the
is the secondary current only, activated with the torch trigger.
AMP = main current (average value), e.g. 100 A
Ipuls = pulse current =
IPP = pulse pause current
Tpuls = duration of one pulse cycle = 1/
= balance =
Selection
34
must be switched to
x AMP, e.g. 140% x 100 A = 140 A
, e.g. 1/100 Hz = 10 ms
x Tpuls, e.g. 30% x 1 s = 0.3 s
in the machine configuration menu to enable this pulse
) and a frequency (
Figure 4-22
Figure 4-23
) having been
current
099-00T400-EW501
21.10.2016