Miller ps-100 Manuale d'uso - Pagina 11

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2-1.
VOLT-AMPERE CURVES
(Figure 2-2)
The
volt-ampere
curves
show the
voltage
and amper
age
output
capabilities
of the
welding
power
source.
2-2.
DUTY
CYCLE
(FIgure
2-3)
The
duty cycle
of
a
welding
power
source
is the
percent
age of
a
ten
minute
period
that
a
welding
power
source
can
be
operated
at
a
given
output
without
causing
over
heating
and
damage
to
the unit. This
welding
power
source
is rated
at
100
percent
duty cycle.
This
means
that the
welding
power
source can
be
operated
at
rated
load
continuously
without
causing overheating
and
damage
to the unit.
Figure
2-3 enables the
operator
to
determine the
output
of the
welding
power
source
at
various
duty cycles.
a
CAUTION: EXCEEDING DUTY CYCLE RAT
ING will
damage
the
welding
power
source.
Do
not exceed
indicated
duty cycles.
2-3.
GENERAL INFORMATION AND SAFETY
A.
General
Information
presented
in
this manual and
on
various la
bels,
tags,
and
plates
on
the unit
pertains
to
equipment
design,
installation,
operation,
maintenance,
and
troubleshooting
which should
be
read, understood,
and
followed forthe safe and effective
use
of this
equipment.
B.
Safety
The
installation,
operation,
maintenance,
and
troubleshooting
of
arc
welding equipment requires
prac
tices
and
procedures
which
ensure
personal safety
and
the
safety
of
others.
Therefore,
this
equipment
Is
to be
installed, operated,
and
maintained
only by qualified
persons
in
accordance with this annual and all
applica
ble codes such
as,
but
not
limited
to,
those listed
at
the
end of
Section 1,
Safety
Rules For
Operation
Of Arc
Welding
Power
Source.
Safety
instructions
specifically pertaining
to
this unit ap
pear
throughout
this manual
highlighted by
the
signal
words WARNING and CAUTION which
identify
differ-S
ent
levels of hazard.
WARNING statements include
installation, operation,
and maintenance
procedures
or
practices
which
if not
carefully
followed could
result in serious
personal
injury
or
loss of life.
CAUTION
statements include
installation,
operation,
and maintenance
procedures
or
practices
which if
not
carefully
followed could result
in
minor
personal
injury
or
damage
to
this
equipment.
A
third
signal
word.
IMPORTANT
highlights
instruc
tions which need
special emphasis
to
obtain the
most
ef
ficient
operation
of this
equipment.
2-4.
RECEIVING-HANDLING
Before
installing
this
equipment,
clean all
packing
mate
rial from
around the unit
and
carefully inspect
for any
damage
that
may have
occurred
during shipment. Any
claim for loss
or
damage
that
may
have occurred
in tran
sit
must
be filed
by
the
purchaser
with the carrier.
A
copy
of the bill Of
lading
will be
furnished
by
the
manu
facturer
on
request
If occasion to tile claim arises.
When
requesting
Information
concerning
this
equip
ment.
it is essential
that Model
Description
and
Serial
Number of the
equipment
be
supplied.
2-5.
DESCRIPTION
This unit is
a
three-phase,
constant current
dc
welding
power
source
with solid-state control.
The
dc
output
is
designed
for
use
with spray
arc
equipment.
A
separate
control module is
required
for
setting
output parameters.
3000
2500
in
2000
8
500
1000
1550
A
200
A
IOOZ
5
20
25
30
40
50
60
70
50
90
00
~
~JTY
CYCLE
FIgure
2-3.
Duty Cycle
Chart
8-118 833
F2544 Pac~e
7