Cebora SOUND MIG MIG 3540/T STAR PULSE Manual De Instrucciones página 16

ger is pressed again the welding current connects to the
third current CrC . and is kept as long as the welding
torch trigger is held down. When the welding torch trigger
is released welding stops.
3- SP (spot-welding).
Off/ON activates and disables the spot function.
The spot welding time tSP is set from 0.3 to 5 seconds.
The interval between two spots tIN is set from 0,3 to 5
seconds.
This function is è blocked when function 3L is activated.
4- HSA (Automatic Hot Start).
This function is blocked when function 3L is activated
and works only with the synergic processes.
Once the function has been enabled using theAN knob ,
the operator may adjust the level of the starting current
SC (Hot Start), with the possibility of adjusting from 1 to
200% of the welding current, a value adjusted using the
knobAN .
The duration tHS (default 130%) of this current may also
be adjusted from 0.1 to 10 seconds.) (default 0,5 sec.).
The switching time Slo between the SC current and the
welding current may also be adjusted from 0.1 to 10 sec-
onds.(default 0.5 seconds).
5- CrA (final crater filler).
This function may be selected by means of key AI and is
working during welding 2t or 4t and also in combination
with function HSA, if so requested.
After activating function «On» by means of knob AN,
rotate knob AI to display the abbreviations:
Slo = Fitting time between the welding current and the
crater filling time. Default 0.5 sec.
Range 0.1 – 10 seconds.
CrC = crater filling time expressed as a percentage of the
welding wire speed. Default 60%. Range from 10 to
200%.
TCr = duration of the filling current time. Default 0.5 sec.
Range 0.1 – 10 seconds.
6- PrF (Pre-gas).
The adjustment may range from 0 to 3 seconds.
7- Pof (post-gas).
The adjustment may range from 0 to 30 seconds.
8- Acc (soft-start ).
The adjustment may range from 0 to 100%.
It is the wire speed, expressed as a percentage of the
speed set for the welding, before the wire touches the
workpiece.
This adjustment is important in order to always achieve
good starts.
Manufacturer setting «Au»: automatic.
The value can be changed using the knob AN. If, once
changed, you wish to return to the original settings,
press the key AV until the abbreviation «Au» reappears on
the display AM.
9- BB (Burn-back).
The adjustment may range from 4 to 250ms. Serves to
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adjust the length of the wire leaving the contact tip after
welding. The higher the number, the more the wire burns.
Manufacturer setting «Au» automatic.
If, once changed, you wish to return to the original set-
tings, press the key AV until the abbreviation «Au» reap-
pears on the display N.
10- L (impedance).
The adjustment may range from -9.9 to +9,9. Zero is the
number set by the manufacturer:if the number is negative,
the impedance decreases and the arc becomes harder; if
increased, it becomes softer.
11- dP ( Double pulse, optional )
This type of welding varies the current intensity between
two levels and may be included in all synergic processes.
Before setting, it is necessary to make a short bead to
determine the speed closest to the type of welding that
you will be doing. This determines the reference speed.
To activate the function proceed as follows:
A)- Activate the function by turning knob AN until the
abbreviation On reappears on the display AM.
B)- Turn knob AI fino uni tl the abbreviation FdP reap-
pears (double pulse frequency) on the display AL. The
display AM reads the abbreviation OFF.
Turn the knobAN to select the working frequency (adjust-
ment from 0.5 to 5 Hz). The selected value is shown on
the display AM.
C) Turn knobAI until the abbreviation ddP (difference in
m/min of the double pulse) is displayed.
Turn the knob AN to select the meters per minute (range
from 0.1 to 3m/min) that will be added to and subtracted
from the reference speed (default 1m/min).
D)Turn the knob AI until the display shows the the
abbreviation tfP. This is the duration of the highest wire
speed, thus the highest current. It is expressed as a per-
centage of the time gained from the Fdp frequency (see
figure 3).
DdP= 0,1÷3 m/min
tdP = 25÷75% di
T = 1/ Fdp (0,5÷5 Hz)
Turn knob AN to adjust the percentage. Range between
25 and 75% (default 50%).
E)-Turn knobAI unitl
abbreviationAdP (arc length of the highest current).
Range between -9.9 and 9.9% (default 0).
When welding, check that the arc length is the same for
both currents; turn the AN knob to correct it if necessary.
R e f e r e n c e
speed
T
Fig. 3
the display shows the