Vansco Pro Series Manual page 3

Speed compensating, distance based electronic adhesive control system
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The PRO SERIES DIGI-TRACK requires two
inputs in order to function: A trigger signal to
start a pattern cycle, and a speed tracker
signal to provide product speed and distance
information.
The triggering device (photo
sensor or limit switch) is mounted so that it will
detect the edge of a product at a point up
stream in the direction of product travel before
the application point.
mounted so that its measuring wheel will
contact a part of the product or the parent
machine (such as a belt or
pulley) that will cause it to
rotate
one
revolution
per
product travel.
On
power-up,
the
SERIES
DIGI-TRACK
performs
an
diagnostic and reset routine,
which
initializes
hardware and insures that
the software is operating
successful completion of this routine, the PRO
SERIES DIGI-TRACK is ready to operate.
Pressing the run/stop button on the control
panel will put the PRO SERIES DIGI-TRACK in
run Mode, which allows a trigger signal to
begin a pattern cycle.
When a pattern cycle is started, the PRO
SERIES DIGI-TRACK begins counting pulses
received from the speed tracker. The pulses
measure the distance traveled.
pulse count corresponds to the "start at"
distance of a pattern (either or both pattern X
and pattern Y), the output selected for the
pattern is turned on. When the pulse count
corresponds to the "stop at" distance of a
pattern, the output is turned off. The pattern
How It Works...
The speed tracker is
complete
foot
of
PRO
internal
the
properly.
When the
cycle is completed when both pattern X and Y
have reached their "stop at" distance settings.
If the Repeat Cycle operation was selected, the
pattern cycle will start again, and continue to
repeat as long as the trigger signal is active. If
the no pattern cycle mode was selected,
patterns are not active; when a trigger signal is
received, the outputs will turn on and remain
on until the trigger signal is removed.
An offset value can be entered for both Pattern
On
Y. Each pattern has
length settings. Either pattern can be directed
to one, both, or neither output A and B. In
addition, either or both outputs A and B can be
disabled from the control panel.
T
he
PRO
monitors its speed and compares it to the
operator selected low speed cut off (lsco)
setting. If machine speed drops below lsco,
both outputs A and B are disabled until the
speed increases to above the lsco speed.
Turn-on speed and turn-off speed correction
factors are continuously generated during
DIGI-TRACK operation, based on the product
speed as sensed by the Speed Tracker, and the
values selected for on-delay and off-delay
selected by an operator. These corrections are
X and Pattern Y.
entered,
this
added to both the "start
at" and "stop at" distances
to determine the pattern
turn
on
and
distances.
selected, will superimpose
repeating on and off cycles
determined by stitch on
length and stitch off length
on Pattern X and Pattern
separate stitch enable and
SERIES
DIGI-TRACK
If
value
is
turn
of
Stitch,
if
constantly

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