Hot-Start Function - Fronius Trans Pocket 4000 CEL Operating Instructions/Spare Parts List

Hot-Start func- In order to achieve an optimum welding result, it is necessary in some cases to set the
tion Hot-Start function. The information required to set the Hot-Start function is found in the
"Hot-Start Function" chapter below.
Benefits:
-
-
-
I (A)
300A
200A
Fig. 25
Function
During the selected hot-current time (Hti), the welding current is increased to a certain
value. This value exceeds the selected welding current (I
Example: The welding current setting (I
During the hot-start time (Hti, e.g. 0.5s), the actual welding current is 200A + (50% of
200A) = 300A.
ELN function The Eln function can be parametrised separately for each of the proces-ses "Rod elec-
(electrode-line trode welding", "Rod electrode welding with CEL electrode" and "Special processes".
selection)
"con" parameter (constant welding current)
If the "con" parameter has been set, the welding current is kept constant, regardless of
the welding voltage. The result is a vertical characteristic (4) (Fig.25).
The "con" parameter is especially suitable for rutile and basic electrodes, as well as
gouging. This is why the "con" parameter is also the factory setting if the process "Rod
electrode welding" is selected.
For gouging, set dynamics to "100".
Parameter "0.1 - 20" (falling characteristic with adjustable slope)
Parameter "0.1-20 " is used for setting a falling characteristic (5) (Fig.25). The setting
range extends from 0.1 A / V (very steep) to 20 A / V (very shallow).
Setting a shallow characteristic (5) is only advisable for cellulose electrodes.
Improved ignition properties, even for electrodes with inherently bad ignition proper-
ties
Better smelting of the base material during the starting phase, therefore fewer cold
points.
Largely avoids slag inclusions.
NOTE! Please refer to the chapter "Set-up menu: Level 1" for an explanation of
the settings of the available parameters.
Hti
HCU
I
H
1 s
0,5 s
Example for the "Hot-Start" function
NOTE! For information on how to set the available parameters, please see the
section headed "Set-up menu: Level 1".
Legend:
I Primary current = set welding
H
current
HCU Hot-start current ... 0 - 100 %,
factory setting: 50 %
Hti Hot-current time ... 0 - 2,0 s,
factory setting: 0,5 s
t
1,5 s
H
) is 200A. The hot-start current setting is 50%.
H
19
) by 0 to 100% (HCU).