The Conveyor Behavior panel defines the behavior properties for a conveyor.
The following properties are on this panel:
If this box is checked, items will accumulate on the conveyor, meaning they will collect
together along the conveyor, similar to a roller conveyor. If this check box is cleared,
items will move in lock-step with each other, like on a belt conveyor. By default, this
box is checked.
The default speed of the conveyor.
The conveyor's rate of speed change as it moves when it first starts or when it changes
from a slower speed to a faster speed.
The conveyor's speed as it slows down to a stop or when it changes from a faster speed to
a slower speed.
The minimum amount of space between items while they travel along the conveyor of while
they are accumulating. If the space between items is less than the specified space, the item
will stop moving.
If items are stopped along a conveyor, this is the amount of space needed between items
before they can resume movement.
If you define a non-zero restart delay time, after items are stopped on a conveyor, this
additional time will be applied before starting the items again after their move space has
The amount of space that must be clear before an item will enter a conveyor.
Each spacing setting has two different fields, as illustrated in the image below:
The first editable number field, the Length Factor field,
allows you to a percentage of space multiplied by the item's length. 1.00 is equivalent to
100%, or in other words the full length of the item. The value 0.5 would be equivalent to
50%, half the item's length. And 2.00 would be equivalent to 200%, twice the item's
The second editable number field, the Additional Spacing
field, allows you to add an additional amount of space based on the units of measurements
Using these two fields, you can create a dynamic set of spacing rules that is either
relative or absolute to the item's length. The following images show examples and
explanations of different spacing settings:
The default of 1.00 x Item Length + 0.00m defines spacing based
purely on item length.
Defining a spacing value of 1.00 x Item Length + 0.06m adds a gap
of 6 centimeters from the trailing edge of one item to the leading edge of the item
A spacing of 0.00 x Item Length + 0.5m defines a 0.5 meter spacing
from the leading edge of one item, to the leading edge of the next item, independent
of item length.
Power and Free Settings
The next group of settings is designed for use in simulating Power and Free conveyor
systems. In these systems, dogs travel at fixed intervals along a looping chain. These dogs
pick up carriers in the system as they pass them. In simulation terms, it is similar to
having a moving space greater than stopping space (there is a caterpillar-like accumulation
effect), except that the point at which an item can move on the conveyor is defined by the
location of the next passing dog, instead of by the space between it and the item ahead of
The available settings are:
Fixed Interval Movement
(Power and Free) - If checked, items can only move
on the conveyor at fixed intervals, at the points where simulated dogs pass the item's
Dog Interval - The spacing between
each dog on the Power and Free chain. If you want to simulate a repeating irregular
pattern of gaps between dogs, you can enter in a series of custom numbers separated by
Item Edge - Defines the associated
item edge to
be picked up by a dog.
Catch Condition - Check this
box to enable a
custom condition defining whether a given dog will "catch" a given item. One
example reason for using this feature might be to simulate randomly missed dogs.
Another example would be in order to simulate a cross belt sorter with defined
"cells". Larger items take up a full cell, while smaller items can fit two on a
cell. Here you would define two dogs per cell,
and larger items can only catch the even numbered dogs.
Slug Building Settings
The last group of settings allow conveyors to build slugs. Conveyors can build and
release slugs as part of a saw-tooth merge.The Slug Building settings are as follows:
Slug Builder - Enables slug building when
Ready Criteria - Defines when a slug lane can be
considered ready for release. One or more of three options should be chosen. If any of
the checked items is fulfilled, the slug will be marked as ready for release. The slug
may continue to build while waiting for release. If the conveyor is not connected to a
Merge Controller, it will release slugs as soon as they are ready for release.
Fill Percent - Select
this box and enter a value to define the percentage of the full conveyor
length that is required for the slug to be ready for release.
Item Count - Select this
box and enter a value to define the number of items in a slug required to be
ready for release.
Max Count - This only applies if
Item Count is also selected. Select this box and
enter a value to define the maximum number of items in a slug. If this is
defined, the conveyor will release no more than this number of items in a
Time Elapsed - Select
this box and enter a
value to define a maximum elapsed slug-build time. The time starts when the
first item is added to the slug. If the slug is still not ready when the timer
finishes, the slug will be made ready for release.
Release Speed - The speed at
which a slug will be released.