Article: KB-10953
Question: What conditions lead to a Divert Abort occurring on a Sliding Shoe Sorter?
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Question: What conditions lead to a Divert Abort occurring on a Sliding Shoe Sorter?

Environment: Sliding Shoe Sorter | BOSS 3 

Answer: In general, an item is subjected to a Divert Abort condition whenever the system (BOSS 3) determines that product would not be able to successfully divert to a given lane, after the product has already entered sortation and after the product has already been given a lane assignment.  This is a protective measure for the sorter, so that an aftersort lane does not receive more product than it is physically capable of handling.  Should product be unable to fully fit in an aftersort lane and be stopped while still partially on the sorter, it could lead to damage of the product and/or damage to critical sortation components.

Divert Aborts are known to occur in at least two scenarios:


1) The intended after-sort lane is subjected to a Lane Full condition or some other condition that would mark the lane as no longer able to receive product (Disabled, etc.).  Since BOSS is treating the lane as unable to receive product, any items already in sortation with that lane as a destination will be Aborted so as not to end up on a lane that cannot accept further product.

2) BOSS detects that the lane is receiving too many items in a short amount of time, and flags a 'Lane Choke' condition.  While the aftersort lane in question may not be marked as full, the software knows that if the lane receives a certain amount of product that the lane will become full once all of that product physically enters that lane.  Therefore, in an effort to predict such a condition occurring, it will prevent other items from sorting to that lane after a specific threshold level of assigned product in a duration of time is met.  The number of items in a row to trigger such a condition is unique for each sorter / site / lane, but can be roughly estimated using [the length of the lane] divided by [the average length of a carton as specified in a site's Description of Operations documentation].

In order to mitigate the likelihood of future Divert Aborts from occurring, it is important to clear product from aftersort lanes such that it does not constantly enter a Lane Full condition.  If a merge operator constantly releases freight from one line that is all destined for the same destination, it may help to stagger product releases from that lane, such that other lanes on the sorter receive a more-equalized amount of freight, giving the lane in question more time to have its product cleared out.

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Published on 7/15/2020.
Last Modified on 7/15/2020.
Last Modified by Michael Sander.
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