PATON
PRO-series
DC
MMA/TIG/MIG/MAG
‐
18
‐
matching
to
ensure
correct
operation.
By
default,
this
value
is
set
to
0.1
s,
i.e.
switched
off.
It
can
be
changed
at
user's
discretion.
See
paragraph
6.1
for
the
procedure
of
changing.
5.3
PULSED
VOLTAGE
WELDING
FUNCTION
This
function
is
designed
to
facilitate
control
over
welding
process
in
spatial
positions
other
than
downhand
position,
as
well
as
during
welding
of
non
‐
ferrous
metals.
This
function
affects
directly
weld
metal
dilution,
therefore
it
primarily
affects
the
shape
of
weld.
It
also
forces
drop
transfer
from
the
filler
wire
into
the
weld
pool
and,
consequently,
affects
the
process
stability.
Just
as
other
types
of
welding,
this
process
substitutes
movements
of
welder's
hand
to
some
extent,
which
is
especially
important
in
hard
‐
to
‐
reach
places.
In
addition
to
weld
shape,
correct
setting
also
determines
quality
of
weld
forming,
thus
reducing
risk
of
porosity
and
grain
structure
of
the
weld
and
consequently
increasing
weld
strength.
In
order
to
implement
this
functions,
three
parameters
must
be
set
in
the
machine:
pulsing
power
[Po.P],
pulsing
frequency
[Fr.P]
and
mark
‐
to
‐
space
ratio
(or
duty
ratio)
[dut].
By
default,
pulsing
power
[Po.P],
which
is
the
key
parameter,
is
set
to
"OFF"
position,
i.e.
disabled,
while
pulsing
frequency
[Fr.P]
and
duty
ratio
[dut]
are
set
to
most
common
values
of
20
Hz
and
50%
respectively.
In
order
to
enable
this
function,
it
is
enough
to
set
pulsing
power
[Po.P]
to
a
value
above
zero.
This
parameter
is
set
in
percent
of
voltage
set
value
of
base
arc
welding.
Example:
welding
with
wire
of
0.8
mm
in
diameter,
set
wire
feeding
speed
is
5.5
m/min.,
set
base
value
of
arc
voltage
is
18
V,
and
pulsing
power
[Po.P]
=
20%,
while
pulsing
frequency
[Fr.P]
=
20
Hz
and
duty
ratio
[dut]
=
50%
by
default.
Result:
current
will
pulse
in
the
range
from
14.4
V
A
to
21.6
V
with
frequency
of
20
Hz,
pulses
will
be
of
the
same
shape
in
terms
of
both
magnitude
and
time.
The
duty
ratio
parameter
is
set
to
50%
by
default.
If
this
parameter
is
changed
to
a
value
other
than
50%,
voltage
pulse
time
and
voltage
pause
time
become
asymmetric:
by
default
duty
ratio
[dut]
=
50%
duty
ratio
[dut]
=
20%
duty
ratio
[dut]
=
70%
In
this
case,
the
machine
will
calculate
the
mode
in
such
a
way,
that
average
voltage
level
of
the
welding
process
will
be
at
the
level
of
the
set
base
arc
voltage
of
18
V
(as
it
was
set).
Accordingly,
heat
input
into
the
weld
will
remain
at
the
level
of
18
V,
but
stability
of
the
welding
process
and
dilution
in
the
welding
pool
will
change.
This
is
a
very
important
condition
for
the
user
when
he/she
needs
to
estimate
the
t,
s
t,
s
t,
s
Содержание PRO-160
Страница 1: ......
