Helvi COMPACT 400 Manual De Instrucciones página 29

the selection made before).
15A Activation/exclusion button (red LED on)
for the VRD function in MMA (when acti-
ve, 2 seconds after the electric arc goes
off the empty voltage of the generator
drops to 12 Vcc).
15B Activation/exclusion button (red LED on)
for the CELL function (cellulosic or alumi-
num electrode welding).
When the CELL function is not active, the
VRD is automatically inserted.
16. Menu button for the regulation of welding
parameters (red LED on). Press the but-
ton several times to visualize the welding
parameters related to the selected pro-
cess, and which can be adjusted using
the knob (pos. 2). In MMA welding, keep
the button pressed for 5 seconds to se-
lect or disable (red LED on or off) the
VRD function. In TIG welding, this button
saves and recalls the adjusted welding
parameters. See paragraph PROG SAVE
AND RECALL.
16A Menu button for the regulation of welding
parameters (red LED on). Press the but-
ton several times to visualize the welding
parameters related to the selected pro-
cess, and which can be adjusted using
the knob (pos. 2).
16B Menu button for the regulation of welding
parameters (red LED on). Press the but-
ton several times to visualize the welding
parameters related to the selected pro-
cess, and which can be adjusted using
the knob (pos. 2). In MMA welding, keep
the button pressed for 5 seconds to select
or disable (red LED on or off) the CELL
function. When the CELL function is not
active, the VRD function is automatically
inserted.
Time of gradual current increase (up-
slope), adjustable with knob (pos. 2)
from 0 to 10 s.
Hs/Af Hot start function (red LED on + letter
H on the display)/Arc force function
(red LED fl ashing + letter A on the di-
splay); these values can be adjusted
using the knob (pos. 2).
Warning: Single LED for the 2 fun-
ctions on 415HF and 420HF/C.
Hs Hot start function (over voltage when
the MMA arc is triggered); this value
can be adjusted using the knob (pos.
2).
Af Arc force function (over current for arc
stability in MMA); this value can be
adjusted using the knob (pos. 2).
Ib Base current in pulsed mode: percen-
tage value (adjustable with knob pos.
2) of the peak current (lw).
Hz Pulsed current frequency adjustable
with knob (pos. 2), from 0 to 500 Hz.
Iw Welding current (red LED on), adju-
stable with the knob (pos. 2) located
on the front part of the generator (from
5A to the maximum current issued by
the generator) or on the remote con-
trol (red LED lw fl ashing). In this case
the maximum current will be the cur-
rent 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 15 s.
Icf Final current: percentage (adjustable
with knob pos. 2) of the welding cur-
rent (lw).
In 4T mode the duration of the fi nal
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 20 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 confi guration (imme-
diate exit when the welding process
starts).
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