Cebora 392 Manual De Instrucciones página 31

• Double level
This type of welding varies the current intensity between two levels. Before setting double-level welding, weld a
short bead to determine the wire speed and thus the current to obtain the optimum bead penetration and width for
the type of weld required.
In this way the wire feed speed (and hence the corresponding current) is determined; the metres per minute that will
be set will be added to or subtracted from this value.
Before start working you should not forget that for a correct bead, the minimum overlap between one mesh and
another must be 50%.
• Double level frequency
The frequency in Hertz is the number of periods per second. Period means the alternation between high and low
speeds.
The welder uses the low speed, which does not penetrate, to switch from one mesh to the next; high speed,
corresponding to maximum current, is the speed that penetrates and implements the mesh. The operator will stop
to implement the mesh.
• Speed difference
This is the amplitude of the speed change in m/min.
The speed change determines whether the m/min is added to or subtracted from the reference speed described
above. All other parameters being equal, when the number increases the mesh becomes wider and penetration is
deeper.
• Duty Cycle
This is double-level time expressed as a percentage: the highest speed/current time for the period duration. All
other parameters being equal, it determines the mesh diameter and therefore the penetration.
3301278
MIN
FREQUENCY 0.1 HZ
PULSE STEP 0.1 M/MIN
DUTY CYCLE 25%
ARC
-9.9
CORRECTION
MAX DEF
5.0 HZ 1.5 HZ
3.0 M/MIN 1.0 M/MIN
75% 50%
9.9 0.0
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