OEE: Specifications

Production Rate

The Production Rate specification contained in the Production tab of the Production Metrics is used by Plant Applications to calculate the Ideal Production Rate used in OEE calculations.

There is a tight correlation between the production rate specification and products. Products are assigned to production units to signify that these are the possible products that can run on those units. Specification variables are attached to production units, and also assigned to a characteristic which represents the product. The end result is a Production Rate specification that indicates the ideal rate that a product should be able to run on that unit or line. The specification is a rate and is therefore written as product units per time of measure, for example, 40 bottles per minute. In Production Metrics, you choose the time units (per day, hour, minute, or second) that actually determines the rate. This specification must be configured in order for Plant Applications to calculate OEE.

For information on configuring specifications for production metrics, see Specifications for Production Metrics Alarming.

To Configure the Production Rate Specification for OEE

For detailed information on creating specifications, see Building a Plant-level Recipe or Product Specification, found under Product Management in the Plant Applications Help Contents.

As an example, you have a product called "Bottled Product 1," for which you want to calculate OEE. To configure a production rate specification:

  1. Under Product Management in the Server Manager tree, create a Product Property as a Generic/Quality property and name it something like "Rate Specs."

  1. Create the Generic/Quality characteristic "BP1."

"BP1" represents Bottled Product 1. If there was a Bottle Product 2, you would also create a BP2 characteristic, and so on for each product.

  1. Create a specification variable for the target.

  1. Enter the target rate for the property/characteristic. For additional information, see How To Map Products To Units.

  1. Right-click the assigned unit in the Plant Model and choose Edit [Unit Name] Properties. In the Unit Properties Configuration dialog box > Production Metrics tab > Production tab, choose "Bottled Products Target Rate" as the Production Rate Specification. Here, you also specify the time factor, which determines the rate in Production Rate Time Measurement Units. In other words, if the specification is 40 bottles per minute, you would choose "Minute" as the Time Units. If the specification was 2400 (60 X 40) per hour, you would choose "Hour" as the Time Units. For more information, see Production Metrics.