TS EN 61987-21

TS EN 61987-21 defines a structured data model for automated valves used in process automation, with the aim of supporting electronic data exchange in a consistent catalogue format. It is centered on how valve information is organised for interoperability in Common Data Dictionary (CDD) environments, rather than on a single manufacturer’s naming practice or a purely textual catalogue entry.

OLOP and DLOP structures for final control elements

The standard provides generic structures for Operating Lists of Properties (OLOPs) and Device Lists of Properties (DLOPs) for final control elements. In practical terms, these lists separate the operational view of a device from the device-level description, helping catalogue data for control valves, automated on/off valves and process regulators be represented in a common way. This makes it easier for engineering tools and asset information systems to exchange comparable data across products and suppliers.

In general technical terms, a standardised property structure allows catalogue information to be exchanged as machine-readable blocks and fields, not just as free text. That improves consistency, reduces ambiguity during selection and integration, and supports digital engineering workflows. This part does not define every property of every valve type; equipment-specific blocks are addressed in the relevant companion parts of the IEC 61987 series.

• Provides a characterisation for integrating automated valves into the Common Data Dictionary (CDD).
• Specifies generic OLOP and DLOP structures in conformance with IEC 61987-10.
• Covers control valves, automated on/off valves and process regulators.
• Leaves equipment-type-specific blocks to other parts of the series.
• Focuses on the shared data structure, not a complete list of all valve properties.