Changeovers

This is a short summary, for more information, see the work instruction Maintain Changeovers.

Changeovers are defined by flexible, attribute-based rules. There are three steps in the process:

1. Create Standard Changeovers.  These are simply a name to identify the type of changeover and its duration (and optionally cost).

2. Create Changeover Rules.  These define when a changeover is required.

   1. Set the length of the Changeover Rule, either by selecting a Standard Changeover or entering a custom time.

   2. Select the Rule Type from the following options: Contaminant Clean, Default, Line Mode Change, Material Attribute Changed, Order Attribute Changed, Periodic, and Simple.

   3. Changeover Rules can be defined to apply only to a specific production line or group of lines, or to apply to all lines.

3. Assign priorities to the rules.  When a change triggers the criteria for multiple changeover rules at the same time, priorities are used to determine which changeover rule will be used.  For example, when changing color, count, and size at the same time, it may be that the size changeover is the most time-consuming. The greater numerical value of the priority attribute means higher priority for a given rule.

Periodic Changeovers

Periodic Changeovers behave differently than changeovers with the other rule types. These changeovers are not related to the product change on the line, but rather for regular maintenance procedures, which should be undertaken on the line within the specified time period. If such rules are created, Phenix Scheduler will create periodic changeovers inside the schedule with required periods. Examples of periodic changeovers are:

1. Regular Inspection, cleaning, and lubrication.

2. Periodic thorough cleaning/washout regardless of the products being produced.

For more information on Periodic Changeovers, see Scheduling Periodic Changeovers.