Final Crater Filler; Soft Start; Burnback; Double Level - Cebora WF4-SS31 Bedienungsanleitung

The following adjustments are available when "ON" is se-
lected:
Start current
Starting current time
Slope time
The welding process starts with the "Start Current".The
time duration of this first current is controlled by the "start-
ing current time". After this stage the current connects to
the welding current according to "Slope Time".
7.1.10"CRA" "Final crater filler".
(only in synergic MIG 2T or 4T processes).
OFF (preset)
ON
The following adjustments are available when "ON" is se-
lected:
Slope time
Crater Current
Crater Current Time

7.1.11 "Soft Start" .

(only in MIG/MAG processes)
It is the wire speed, expressed as a percentage of the
speed set for the welding, before the wire touches the
workpiece.
Soft Start

7.1.12 "Burnback".

(only in MIG/MAG processes)
Serves to adjust the length of the wire leaving the contact
tip after welding.
Reg Burnback
7.1.13 "Double Level" Art. 233 (optional) (only in syner-
gic MIG/MAG processes).
This type of welding varies the intensity between two lev-
.
els
Before setting the double level welding, it is necessary to
make a short bead to determine the wire speed and the
current to obtain the penetration and the bead width clos-
est to the type of welding to be made.
The wire feed speed is thus determined (and the corre-
sponding current); the meters per minute that will be set
will be alternatively added to and subtracted from this val-
ue.
Before start working you should not forget that for a cor-
rect bead, the minimum overlapping between two "mesh-
es" must be 50%.
OFF (preset)
ON.
The following adjustments are available when "ON" is se-
lected:
MIN MAX DEF.
10% 200% 135%
0.1 s 10 s 0.5 s
0.1 s 10 s 0.5 s
MIN MAX DEF.
0.1 s 10 s 0.5 s
10% 200% 60%
0.1 s 10 s 0.5 s
MIN MAX DEF.
1% 100% Auto.
MIN MAX DEF.
4 ms 250 ms Auto.
Frequency

Pulse step

Duty cycle
Arc correction
7.1.13.1 "Frequency" of double level.
The Herz frequency is the number of periods per second.
Period means the speed alternating from the higher to
the lower values.
The lower value, that does not penetrate, is used by the op-
erator to change from one mesh to the next one; the higher
speed, corresponding to the maximum current, is the pen-
etrating speed; the operator will stop to make the mesh.
7.1.13.2 "Pulse Step": it is the amplitude of the speed
change in/min.
The speed change determines the sum and the the sub-
traction of m/min from the reference speed described
above. Parameters being the same, when the number in-
creases the mesh is wider and penetration is deeper.
7.1.13.3 "Duty cycle": double level time.
Expressed as a percentage, this is the higher speed/cur-
rent time as compared to period duration. Parameters be-
ing the same, it determines the mesh diameter and there-
fore the penetration.
7.1.13.4 "Arc Length Cor".
Sets arc length of the higher speed/current.
Warning: make sure that the arc length is the same for
both currents.

7.1.14 "Double Pulse".

It starts automatically when the two Art. 231 and Art. 233
are purchased.
See paragraph 7.1.13 for operation.

7.1.15 "Preflow".

(In all processes except MMA).
Pre Gas

7.1.16 "Postflow".

(In all processes except MMA).
Postflow
MIN MAX PRED.
0.1 Hz 5 Hz 1.5 Hz
0.1 m 3 m 1 m
25% 75% 50%
-9.9 9.9 0
MIN MAX DEF.
0 s 10 s 0.1 s
MIN MAX DEF.
0 s 10 s 3 s
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