Eln" Characteristic-Selection Function - Fronius TransTig 2200 Operating Instructions Manual

"Eln" characteri- "P" parameter (constant welding power)
stic-selection -
function
(continued)
-
Important! If there are problems with a rod electrode tending to "stick", set the arc-
force dynamic to a higher value.
Further
The characteristics
explanations of
characteristic corresponds - at a given arc length - to the load line
the "Eln"
characteristic-
selection
function
Fig.26 Settings example: I
Depending on what welding current (I) has been set, the point of intersection (operating
point) of characteristics
operating point provides information on the actual welding voltage and the actual
welding current.
If the "P" parameter has been set, the welding power is kept constant, irrespective
of the welding voltage and welding current. This results in a hyperbolic
characteristic (Fig. 25).
The "P" parameter is particularly suitable for cellulose electrodes.
, and
U (V)
30
25
20
15
10
5
... Load line for rod electrode
... Load line for rod electrode where arc
length is increased
... Load line for rod electrode where arc
length is reduced
... Characteristic where "con" parameter
is selected (constant welding current)
... Characteristic where "0.1 - 20"
parameter is selected (falling
characteristic with adjustable slope)
... Characteristic where "P" parameter is
selected (constant welding power)
= 125 A, arc-force dynamic = 50
1
,
shown here apply when using a rod electrode whose
50 100 150
I - 50 % I + arc-force dynamic
1 1
... Ex. of preset arc force dynamic where
characteristic
... Possible change in the current where
characteristic
function of the welding voltage (arc
length)
... Operating point where arc-length is
long
... Operating point where welding
current I
... Operating point where arc-length is
short
and will be displaced along the load line
45
.
I (A)
200
or is selected
or is selected, as a
is set
1
. The