ITW Dynatec DPC2 Operation And Service Manual page 35

ITW Dynatec c. 1999
DPC-2 CONTROL KIT Manual #50-06
5. Run product at a very slow speed (30 to 50 feet per minute) and assure the glue
pattern is being applied in the desired position on the substrate. The PRE-DELAY
value may need to be modified if the glue pattern is starting too soon or too late from
the leading edge of the substrate. You should not have to change your DELAY and
LINE values to achieve the desired results as long as they have been programmed to
the desired dimensions.
NOTE: The first product glued may have a distorted pattern due to a time-delay
caused by the A.T.S. activation circuitry. Subsequent product should be glued
properly provided the next trigger input occurs within 2 seconds of the previous
trigger input.
6. Depress the desired CHANNEL button until the "Leading Edge Compensation" value
is once again displayed.
7. Run your machine at its maximum production rate. The glue pattern will "retard"
(move further away from the leading edge of the product) as the speed is increased.
8. Gradually increase the "Leading Edge Compensation" value (use the DIGIT button
and VALUE knob) until the starting point of the glue pattern returns to the desired
location.
9. Depress the desired CHANNEL button until the "Trailing Edge Compensation" value
is displayed.
Gradually increase the "Trailing Edge Compensation" value (use the DIGIT button and
VALUE knob) until the ending point of the glue pattern returns to the desired location.
The DPC-2 Control Unit is now set to properly compensate for glue application over the
entire range of machine speeds.
NOTES:
a. The DPC-2 will compensate independently on a channel-by-channel basis. The above
procedure must be undertaken for each CHANNEL being used.
b. All applicators have slightly different response times, even two applicators of the
exact same type. Slight variations in glue patterns may be evident if more that one
glue applicator is connected to each CHANNEL.
c. The first product glued may have a distorted pattern due to a time-delay caused by the
A.T.S. activation circuitry. Subsequent product should be glued properly provided the
next trigger input occurs within 2 seconds of the previous trigger input.
COMPENSATION ERRORS
The COMPENSATION function operates by turning the applicator on or off "early".
Sufficient time must exist in the pattern programming to allow this to occur at the
machines operating speed. A flashing yellow LED to the left of the COMPENSATION
parameter of the Control Unit's front panel indicates a lack of sufficient time and,
therefore, an inability to properly compensate. The table below provides guidance in
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Revised 7/99