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4
-
5. STOP
PUSH-BUTTON
SWITCH
(Figures
4-1
&
3-3)
-
Depressing
the STOP
push-button
switch will
initiate the
preprogrammed
crater
fill, burnback,
and
post-flow
time. See
Figure
3-3 for weld
cycle
events.
4 -6. ERROR RESET
BUTTON
(Figure
4-1)
-
The
Voltage
Reset
button,
labeled ERROR
RESET,
is
provid
ed
to reset
the Voltmeter if the
preset
voltage
is
beyond
the limitations of the
welding
power
source.
If the load
voltage
remains lower
or
higher
than the
preset
voltage
for
more
than 1 .5
seconds,
the Voltmeter
display
will
begin
to
flash. Once
the
display begins
to
flash,
it will
continue
to
do
so even
if the
preset
voltage
can
be ob
tained
by
the
welding
power
source or
welding
opera
tions
cease.
Depress
the ERROR RESET button
to
stop
the Voltmeter
display
from
flashing.
During
normal
equipment operation,
the
condition
which would
cause
the
display
to
flash would be
a
preset
voltage
which is
out
of the
range of the
welding
power
source
(at
a
particular
line
voltage
and load
cur
rent)
or
improper
connection of
voltage sensing
leads.
Ensure that leads
are
properly
connected
(see
Section
3-6A)
and that connections
are
clean and
tight.
Read
just
the
preset
voltage
before
resuming operation.
4-7.
PRESS TO SET BUTTONS
(Figure4-1)
-
Two
white
push-button
switches
are
provided
for
presetting
weld
cycle
conditions. Each button governs the
two
controls
directly
below it.
Pressing
(and
holding)
the
RUN-IN button allows
presetting
of the RUN-IN WIRE
SPEED and
optional
RUN-IN VOLTAGE
(if
applicable).
Pressing
the CRATER & INCH button allows
presetting
of the CRATER VOLTAGE and CRATER & INCH WIRE
SPEED. When either of these buttons is
pressed,
the
values selected
on
the
applicable
controls will
appear
on
the
meter
displays.
The POWER switch
must
be in the
ON
position
for these buttons
to
be functional. When
the buttons
are
released,
the
meters
will
display
the
selected
WELD
VOLTAGE and WELD WIRE SPEED.
(See
Sections 4-8 and 4-9 for additional
meter
display
information.)
4
-
8. DIGITAL
VOLTMETER
(Figure
4-1)
-
This
meter
displays voltage
to
the
nearest
tenth of
a
volt.
The POWER switch
must
be in the ON
position
for the
meter to
function. With the POWER switch in the ON
position,
but before the START button is
depressed,
this
meter
will
display
WELD
voltage.
In all
cases,
regardless
of
options,
WELD
voltage
as
selected
by
the
WELD VOLTAGE control is
displayed during preflow,
weld, burnback,
and
postflow
times. Crater
voltage,
as
selected
by
the
CRATER
VOLTAGE
control,
is
displayed during
CRATER TIME. If the
optional
RUN-IN
VOLTAGE
and RUN IN TIME controls
are
present,
Run-
In
Voltage,
as
selected
by
the
RUN-IN VOLTAGE
con
trol,
is
displayed during
Run-In and until the RUN IN
TIME control times
out
after
arc
initiation.
II ~ I ~s . fit I ~
If voltmeter
display
is erratic
during
run
in and
crater
time,
no
malfunction is
present.
The
meter
does
not
have sufficient time
to
change
and
stabilize the
display. Regardless,
the unit will still pro
vide the
preset
values if within its
capability.
IMPORTANT
4
-
9. DIGITAL
INCHES
PER
MINUTE
METER
(Figure
4-1)
-
This
meter
displays
wire
speed
in inches
per minute. The POWER switch
must
be in the ON
posi
tion for the
meter to
function. With the POWER switch
in the
ON
position,
but before the START button is
depressed,
this
meter
will
display
WELD wire
speed.
In
all
cases,
regardless
of
options,
wire
speed
as
selected
by
the WELD WIRE SPEED control is
displayed during
preflow,
weld, burnback,
and
postflow
time. Crater
speed,
as
selected
by
the
CRATER & INCH SPEED
CONTROL,
is
displayed during
CRATER TIME.
Run-In
speed,
as
selected
by
the
RUN-IN SPEED
control,
is
displayed during
Run In time
(after
preflow
until
arc
in
itiation).
If the
optional
RUN-IN VOLTAGE and RUN IN
TIME controls
are
present,
Run-In
speed,
as
selected
by
the RUN-IN SPEED
control,
is
displayed during
Run-In
time
(after
preflow
until
arc
initiation).
If the
optional
RUN-IN VOLTAGE and RUN IN TIME controls
are
pre
sent, Run-In
speed,
as
selected
by
the RUN-IN SPEED
control,
is
displayed during
Run-In and until the
RUN IN
TIME control times
out
after
arc
initiation.
______________
If
meter
display
is erratic
during
run
in
and
crater
time,
no
maffunction
is
present.
The
meter
does
not
have
sufficient
time
to
change
and stabilize the
display. Regardless,
the unit will still
provide
the
preset
values if within its
capability.
4-10. WELD
VOLTAGE
CONTROL
(Figuire
4-1)
-
The WELD
VOLTAGE control
provides
a means
of
selecting
the desired
voltage during
the Weld
portion
of the
cycle
(see
Section
4-8).
Rotating
this control
clockwise increases the WELD
voltage.
This control is
a
10-turn
potentiometer.
4-11. WELD
WIRE
SPEED
CONTROL
(Figure
4-1)
-
The WELD WIRE SPEED
control
provides
a
means
of
selecting
the
rate at
which
welding
wire will
feed into the weld
during
the Weld
portion
of the
cycle
(see
Section
4-9).
Rotating
this control clockwise increases the WELD
wire feed
speed.
This
control
is
a
10-turn
poten
tiometer.
4-12. RUN-IN
WIRE
SPEED
CONTROL
(Figure
4-1)
-
The RUN-IN WIRE SPEED control
provides
a
means
of
selecting
the
rate at
which
welding
wire will
feed after
preflow
and
prior
to
arc
initiation
(or
until the
optional
RUN
IN TIME
control times
out
after
arc
initia
tion,
if
applicable).
After
arc
initiation
(or
after
optional
RUN IN TIME control times out, if
applicable),
the wire
feed
speed
is
governed by
the WELD
WIRE SPEED
con
trol. The selected Run-In Wire
Speed
will be
displayed
by
the INCHES PER MINUTE
meter
during
the Run-In
period.
Rotating
this control clockwise increases
the wire feed
speed during
the Run-In
portion
of the
cycle.
This
con-
trolls
a
10-turn
potentiometer.
4-13.
RUN-IN
VOLTAGE
CONTROL
(Optional)
-
The
Optional
RUN-IN VOLTAGE
control,
located
directly
above the RUN-IN WIRE SPEED
con-
OM-1536
Page
11
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