Cebora Sound MIG 3840/T Manual De Instrucciones página 21

3.5.4 CrA (crater filler- final crater filling).
The function may be selected using the knob N, and oper-
ates in two-stage (LED S) or four-stroke welding (LED T)
and if you wish, also in combination with the HSA function.
After activating the function by selecting "On" with the
knob Q, turn the knob N to display the items:
Slo = Interface time between the welding current and
crater current. Default 0.5 sec. Adjustment range
0.1 –10 sec.
CrC = crater current expressed as a percentage of the
wire speed in welding. Default 60%. Adjustment
range 10 – 200%.
TCr = crater current duration. Default 0.5 sec. Adjustment
range 0.1 –10 sec.
3.5.5 dP Double pulse ( Art. 387 Optional ).
This type of welding varies the current intensity between
two levels and may be included in all synergic programs.
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.
Proceed as follows to activate the function:
1. Press the button AO and, while holding it down, press
the button E to enter a submenu.
2. Turn the knob N until the abbreviation "dP" appears on
the display O. Activate the function by turning the knob
Q until the message On appears on the display P.
3. Turn the knob N until the message FdP (double pulse
frequency) appears on the display O. Display P shows
the message OFF. Turn the knob Q to select the work-
ing frequency (range from 0.5 to 5 Hz). The value
selected is shown on display P.
4. Turn the knob N until the message ddP (double pulse
difference in m/min) appears.
Turn the knob Q to select the meters per minute (range
0.1- 3m/min) that will be added to and subtracted from
the reference speed (default 1m/min).
5. Turn the knob N until the message tdP appears. This
is the duration of the highest wire speed, thus the
highest current. It is expressed as a percentage of the
time gained from the frequency Fdp (see figure 3).
Turn the knob Q to adjust the percentage. Range
between 25 and 75% (default 50%).
DdP= 0,1÷3 m/min
tdP = 25÷75% di
T = 1/ Fdp (0,5÷5 Hz)
6. Turn the knob N until the message AdP appears (arc
length of the highest current). Range -9.9 - 9.9 (default 0).
Make sure that the arc length in welding is the same for
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R e f e r e n c e
speed
T
Fig. 3
both currents; turn the knob Q to correct if necessary.
Note: it is possible to weld within the double pulse func-
tions.
Once these adjustment have been made, to return to the
normal panel configuration press the button AO and,
while holding it down, press the button E.
Should it be necessary to adjust the arc length of the low-
est current/lowest speed, adjust the arc length of the ref-
erence speed (LED K activated).
When the reference speed moves, the previous settings
must also be repeated for the new speed.
3.5.6 ITO (inching time out) function.
The purpose is to stop the welding machine if the wire
flows lengthwise after starting with no passage of current.
Press the button AO and, while holding it down, press
the button E to enter a submenu.
Turn the knob N to select: ITO.
Turn the knob Q to select the type of operation:
OFF = Off
Adjustment range = 5 –50cm.
3.5.7 Robot ("rob") functions.
Valid only for robot versions.
3.5.8 FAC (factory) Function.
Activation:
The purpose is to return the welding machine to the
original settings provided by the manufacturer.
Press the button AO and, while holding it down, press
the button E to enter a submenu.
Turn the knob N to select: FAC
Turning the knob Q allows you to select the items:
noP = Restores operation as set by the manufacturer
without erasing saved programs. The cooling unit is
shut off.
Prg = All saved programs are deleted.
ALL = Restores operation as set by the manufacturer.
The cooling unit is shut off.
To activate the function press the button AP.
4 INSTALLATION
The welding machine must be installed by skilled person-
nel. All connections must be made in full compliance with
current safety laws.
4.1 PLACEMENT
The weight of the welding machine is 108 Kg, thus for lift-
ing see Fig. 4.
Position the equipment in an area that ensures good sta-
bility, efficient ventilation so as to prevent metal dust (i.e.,
from grinding) from entering.
4.2 SETUP
Position the wire feeder WF4-HD on the power source.
Connect the wire feeder to the power source by means of
the relevant connection.
NOTE: avoid coiling the connection to reduce to a mini-
mum the inductive effects that could affect the results in
pulsed MIG/MAG welding.
Assemble the DIGIBOX panel.
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