Efficiency model items

Equipment

Each piece of equipment for which efficiency is to be tracked must be defined in the model.

When a piece of equipment is added to the efficiency model, it is added as an asset as well. Also, a set of KPI (key performance indicators) are added to the tag dictionary for it. For more information about using these tags with AVEVA Insight charts, see View equipment KPI in charts.

Equipment States

To support efficiency tracking, each piece of equipment is always considered to be in an equipment state, such as Running, Emergency Stop, Down, or Maintenance. To support efficiency tracking and analysis, all of the equipment states that are expected to occur for every piece of equipment should be defined.

For OEE (overall equipment effectiveness) analysis purposes, equipment state statistics are aggregated into three predefined equipment state types: Runtime, Downtime, and Idle. So each equipment state must be mapped to one of the three equipment state types.

Utilization Reasons

Utilization reasons describe an event that has changed the operating state of a piece of equipment. Each utilization reason is mapped to an equipment state. For example, the reason Bottle Jam could be mapped to the equipment state Emergency Stop, which is in turn mapped to the Downtime equipment state type.

If no utilization reasons exist, users will be able to assign an equipment state to a utilization event.

Utilization Reason Groups

Reasons can be organized into groups and subgroups to make them easier for you to manage and for users to find when assigning them to events.

• The group hierarchy can be up to 5 levels.

• If a reason group contains no reasons or subgroups, it will not be shown to users when they are selecting a reason for an event.

• A reason can be a member of more than one reason group.

Equipment Utilization Reasons

Equipment can be assigned a specific set of utilization reasons. This allows you to restrict the utilization reasons that can be used with a piece of equipment.

Equipment Automation Values

Automation value overrides can be defined for a piece of equipment. The utilization reason that is assigned to the automation value override will be used instead of the standard utilization reason to which the automation value is mapped.

For example, say the automation value 107 is mapped to the standard utilization reason Conveyor Motor Failure. For a given piece of equipment, the automation value 107 can be instead mapped to the equipment-specific reason Primary Control Relay Off.

Utilization Reason Tags

Utilization reason tags are used to subscribe to and process utilization data using value, time, and quality (VTQ) indicators from a piece of equipment.

OEE Calculation Definitions

If OEE analysis is going to be available for a piece of equipment, then a set of OEE calculation definitions needs to be defined for it. The calculation definition includes default values that are used to determine the default rate for a production run. It also includes target OEE values.

Disposition Reasons

Production disposition reasons describe why a good or waste production count was entered. For example, reasons for entering a good production count might be Good Work In Progress or Grade A Finished Goods. Reasons for entering waste production might be Over Filled, Product Damaged, or Out of Spec.

Production Counter Tags

Production counter tags are used to subscribe to and process production data using VTQ indicators from a piece of equipment.

Production Run Tags

Production run tags are used to define production run settings and to automatically start or complete production runs on equipment.

OEE Data Properties

OEE data properties provide operating context for utilization and production events; for example, Crew, ProductID, Shift, and WorkOrderID. During operation of a piece of equipment, an operator can set the OEE data properties to values that reflect the current operating conditions. These values can then be used to group report data during OEE analysis.

OEE Data Property Tags

OEE data property tags are used to subscribe to and process OEE data property data using VTQ indicators from a piece of equipment.

Production Lines

A production line is an ordered set of equipment that models a production line, manufacturing line, or assembly line. A line is ordered in the sense that each piece of equipment in the line is related to at least one other piece of equipment in the line in a directed way that indicates the flow of product. A production line and the equipment in it are all considered assets in AVEVA Insight.

Production lines are are not imported into the efficiency model. Instead, they're added and maintained using the Production Line Builder.