Conceptual model vocabulary expansion requirements

The AVEVA Unified Engineering Default Configuration includes a comprehensive conceptual model with predefined vocabulary definitions. However, depending on specific project requirements, additional classes may need to be introduced.

To ensure that key user workflows function correctly, any newly added class may require an associated vocabulary definition. When extending the model and applying vocabulary behaviors, you must:

• Analyze existing classes before creating new ones:

  Where possible, create child objects under existing classes that share similar behaviour.

• Reuse existing multi-domain associations:

  Ensure that user workflows (such as reporting and data display in grids) remain simple and efficient.

  Manually update domain and range definitions where required.

• Validate the vocabulary after introducing changes:

  Ensure that the system does not create unintended new associations.

  Verify that duplicate attributes are not generated.

The following sections provide examples to illustrate these considerations.

Enable Power Requirements for instrument classes

By default, the instrument class does not require an external power supply. However, certain classes (for example, Accelerometer, Radioactive Level Switch and Transmitter) already have this capability enabled within the data model.

To enable Power Requirements for additional instrument classes, the following configuration steps must be performed:

1. Decorate the relevant classes with the Power Calculations definition.

2. Add the selected classes to the Domain of the following multi-domain associations:

   • Ref DC Connection Identifier

   • Ref Powered Equipment Carrying Potential

   • HavePart Fed Item Connections

   • Ref Connection Voltage

   • Ref OutPut Voltages

   • Ref Electrical Phase

3. Add the selected classes to the Range of the following multi-domain associations:

   • Ref FIC First Connected (required for graphical electrical connections in the Single Line Diagram).

   • Ref FIC Second Connected (required for graphical electrical connections in the Single Line Diagram).

4. Run the Vocabulary Validation after completing the configuration.

   Select Fix all to automatically resolve any missing attributes identified during validation.

Enable Power Requirements for enclosure classes

By default, the enclosure class does not require an external power supply. However, certain classes (for example, Switchgear & Controlgear, Junction Box, Cabinet and Panel) already have this capability enabled within the data model.

To enable Power Requirements for additional enclosure classes, the following configuration steps must be performed:

5. Decorate the relevant classes with the Power Calculations definition.

6. Add the selected classes to the Domain of the following multi-domain associations:

   • Ref DC Connection Identifier

   • Ref Powered Equipment Carrying Potential

   • HavePart Fed Item Connections

   • Ref Connection Voltage

   • Ref OutPut Voltages

   • Ref Electrical Phase

   • HavePart Equipment Plugs

   • HavePart Equipment Sockets

   • HavePart Terminals

   • HavePart Internal Connectors

7. Add the selected classes to the Range of the following multi-domain associations:

   • Ref FIC First Connected (required for graphical electrical connections in the Single Line Diagram).

   • Ref FIC Second Connected (required for graphical electrical connections in the Single Line Diagram).

8. Run the Vocabulary Validation after completing the configuration.

   Select Fix all to automatically resolve any missing attributes identified during validation.