Glossary Updates12 new terms added to the glossaries · October 2, 2026, 22:44 CEST
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Glossary · Functional safety

ProSafe-RS

Also known as: Yokogawa ProSafe-RS

German: ProSafe-RS

In process automation, ProSafe-RS is the safety instrumented system product line from Yokogawa, used as a logic solver for safety instrumented functions such as emergency shutdown, fire and gas and burner management.

  • Functional safety
  • Integrated systems

In one sentence

ProSafe-RS is Yokogawa's safety instrumented system product line, used as a logic solver for emergency shutdown and fire and gas functions.

Example

In a refinery, ProSafe-RS controllers execute the emergency shutdown logic, while the distributed control system shows SIS status and trip messages to the operators.

How it applies

  • Engineering: ProSafe-RS serves as the Logic solver of a SIS and is typically integrated with Yokogawa's distributed control system for operation and diagnostics.
  • Functional safety: The certification of the product states the SIL capability of the platform. Each Safety instrumented function (SIF) still needs its own design, SIL verification and validation.
  • Operation and maintenance: Safety manual conditions, such as diagnostics settings, access control and permitted configuration changes, apply over the whole operating life.
  • Documentation: Record the system and application software versions and the safety manual revision used. The documentation team should reference the vendor's safety manual rather than copying its conditions, so updates are not missed.

ProSafe-RS vs. DCS

A DCS controls the process during normal operation. ProSafe-RS acts as the independent protection layer on demand. Integrated operation does not remove the need to justify independence under IEC 61511.

Keep in mind: Product names, versions and certificates change. Check them against the vendor's current documentation.

By knowledge.aitechdoc.world · Published September 26, 2026 · Last reviewed

Source: AI TechDoc Knowledge editorial definition, based on IEC 61511 practice and vendor product information

Definitions follow the cited standards and specifications. Where a source is a copyrighted publication, such as an ISO, IEC or EN standard, the definition is a close paraphrase, not a verbatim quotation, so as not to infringe copyright. We recommend reading the original publication. The sections “How it applies” are editorial commentary by AI TechDoc Knowledge and are not part of any standard.

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