Delta ASDA-A3 Series User Manual page 561

Motion Control
 Controller (master axis)
The controller controls the operation mechanism for the horizontal packing machine and
judges the logic for the auxiliary functions. In addition, the controller is the pulse source for
the master axis and it sends stable pulse signals to the slave axes, and the slave axes
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operate based on these pulse signals.
 Chain conveyor (slave axis)
This axis conveys the contents to be packed. The following two slaves (wrap feeder and
heat sealer with cutter) perform E-Cam phase alignment based on the marking on this
chain conveyor.
Wrap feeder (slave axis)

This axis feeds the packing wraps. The feeding of the packing wrap has to be smooth.
For example, the tension output by the mechanism cannot be too great, or the packing
wrap can be over-extended. However, if the tension is not high enough, slippery on the
wrap feed roller might occur. When any of these two circumstances occurs, it means the
output master pulses do not match the packing film length. In this case, use the phase
alignment compensation function provided by the servo drive for correction.
 Heat sealer with cutter (slave axis)
The design for the heat sealer with cutter needs to take the proportion of the cutting length
and cutting interval into consideration. If the cutting length is too short, it can cause a
drastic change in cutter rotation speed or the motor torque might exceed the output limit.
So, you can consider to increase the cutter number to reduce the cutter interval, making
the rotation speed smoother. For packing machine applications, the cutter has both the
heat sealing and cutting functions, thus when plotting the E-Cam curves, the synchronous
speed zone has to be greater for the cutter to complete the cutting and heat sealing.
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