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Chapter 4
Package Recognition System
The Package Recognition System is an integral part of the Ribbon Tension assembly and
the electronics. This system determines whether a bag neck has been properly presented
in tying position. As the needle wraps the ribbon around the bag neck, the length of
dispensed ribbon is measured. If the amount of ribbon dispensed is significantly less than
that required by a normal package, the processor aborts the current tie cycle before the
twister hook and holder shear begin their motion. An audible alarm is sounded to alert the
operator of a possible problem. If the length of dispensed ribbon is significantly more than
normal, the Servo Tyer completes its tie, but the alarm is sounded to indicate that a heel
may be contained in the tie. This feature can be disabled with DIP Switches 4 and 6 on
the AUX board. See pg. 87 for details.
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