Helvi COMPACT 220AC/DC Manual De Instrucciones página 33

ction, simply press and quickly relea-
se the trigger (<0.8 s) and after a time
set by the operator the action on the
torch button quickly repeats to return
to value of the welding current (Iw).
The on red LED on the front panel of
the generator indicates the level of the
selected current (Iw or Bl). The inter-
ruption of the welding process (early
phase of down slope) is done by pres-
sing and holding the trigger for a time
greater than 0.8 s.
Att.: Bi-level function can only be used
in torch trigger mode (T4).
The function Bi-level can be used in
welding to:
- adjust the thermal effort,
- vary the operative positions,
- Solder of different thicknesses or
add filler metal without having to inter-
rupt the welding process,
Ib Base current in pulsed mode: percen-
tage value adjustable with knob pos.
2 from the minimum of 5A to the lw
current value.
Hz One LED for 2 functions:
- pulsed frequency (red LED on).
Frequency of pulsed current (AC or
DC) adjustable by knob (item 2) from
1 to 500 Hz
- pulsation ratio (red LED flashing).
Att.: functions are activated only if pul-
sed current mode is activated by pres-
sing the button (pos.15).Percentage
of time (from 20 to 80%) in which the
welding current has the peak value in
the frequency of pulsation.
Iw Welding current (red LED on), adju-
stable with the knob (pos. 2) located
on the front part of the generator (from
the minimum to the maximum current
issued by the generator) or on the re-
mote control (red LED lw flashing). In
this case the maximum current will be
the current set using the knob (pos. 2)
on the front part of the generator.
Time of gradual current reduction
(down-slope), adjustable with knob
(pos. 2) from 0 to 25 s.
Icf Final current: percentage adjustable
with knob pos. 2 from the minimum
(5A) to the set welding current (lw).
In 4T mode the duration of the final
current (lcf) is established by the user
by means of the torch button.
Warning: This function is not available
in 2T mode.
Post gas adjustable by means of knob
pos. 2 (from 0 to 25 s).
Notes:
- Any adjustments to a welding pa-
rameter are immediately memorized
and made available for welding.
- Five seconds after the last parame-
ter regulation, the generator automati-
cally exits menu configuration (imme-
diate exit when the welding process
starts).
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