Rockwell Automation Arena Packaging Users Guide - Manual (Page 39)

3 • T HE P ACKAGING P ANEL
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interactions to the minimum level. One way of doing this is to assume (for modeling
purposes) that there is only one layer per pallet. Then set Units/Layer to the total number
of units on a pallet, Time Between Layers to 0.0, and Layers/Pallet to 1.0. Of course, if the
internal workings of the palletizer are important, then you should use all the available
options to model it accurately.
P ALLETIZER LOGIC
The following diagram and discussion illustrate the detailed internal workings of a
palletizer.
First, the palletizer takes units off the upstream conveyor at its run speed and fills a layer.
The run speed of the palletizer is calculated as follows:
Run Speed (layers/min) = Nom. Run Speed (layers/min) * Sf
or
Run Speed (units/min) = Nom. Run Speed (layers/min) * Sf * Units/Layer.
S
f
is the speed factor of the palletizer. The speed factor can be dynamically assigned
values using the Change Speed Factor of Palletizer action. Nom. Run Speed and
Units/Layer are defined in the Run Parameters section of the Palletizer main dialog box.
Palletizer Logic
Conveyor Pallet Storage
Fill Layer at
Run Speed (Layers/Min)
Layers/
Pallet
Capacity
Time Betw.
Pallets Time Betw.
Layers
Fill
Layer
T im e Betw.
Layers
T im e Betw.
Pallets
Pallet
Full?
Storage
Full?
Blocked
Add Layer;
Create Entity
Add Pallet;
Create Entity
Create Entity
Storage Not Full
Yes No
Yes No