Anti-Stick Function - Fronius Trans Pocket 4000 CEL Operating Instructions/Spare Parts List

ELN function
(electrode-line
selection)
(continued)
Fig. 27 Settings example: I
Legend:
(1) Load line for rod electrode
(2) Load line for rod electrode where arc length is increased
(3) Load line for rod electrode where arc length is reduced
(4) Characteristic where "con" parameter is selected (constant welding current)
(5) Characteristic where "0.1 - 20" parameter is selected (falling characteristic with
(6) Characteristic where "P" parameter is selected (constant welding power)
(8) Example for dynamics setting if characteristic (5) or (6) is selected
(9) Possible current change if characteristic (5) or (6) is selected, depending on the
The welding current (I) in zone (9) can be max 50% lower than the selected welding
current (I
Anti-Stick func-
tion
Where the arc becomes shorter, the welding voltage may drop so far that the rod elec-
trode tends to "stick". This may also cause "burn-out" of the rod electrode.
Electrode burn-out i s prevented if the anti-stick function has been activated. If the rod
electrode begins to stick, the power source immediately switches the welding current off.
After the rod electrode has been detached from the workpiece, the welding operation
can be con-tinued without difficulty.
operating point if
arc length is
increased
U (V)
60
50
40
30
20
10
0
0 50 100 150 200 250 300 350 400 450 I (A)
= 250A, dynamics = 50
H
adjustable slope)
welding voltage (arclength)
). The upper limit of the welding current (I) is given by the dynamics setting.
H
NOTE! The anti-stick function can be activated and deactivated in "Set-up
menu: Level 2" (see the section headed: "Set-up menu: Level 2").
(9)
operating point
operating point
if arc length
if welding current
is reduced
(I )is fixed
H
(6)
(5)
(8)
(4)
I +
I - 50 %
H
H
Dynamik
21
(2)
(1)
(3)