Description

The YOKOGAWA AVR10D-Q22020 is a specialized redundancy management module engineered for mission-critical applications within Yokogawa’s ProSafe-RS safety instrumented system (SIS), a certified platform compliant with IEC 61508 and SIL 3 standards. Designed to ensure maximum system availability and fault tolerance, the YOKOGAWA AVR10D-Q22020 serves as a core component in dual or triple-redundant CPU configurations, enabling seamless failover, synchronization, and voting logic in high-integrity protection systems. As part of the ProSafe-RS architecture, the YOKOGAWA AVR10D-Q22020 plays a pivotal role in maintaining continuous operation of emergency shutdown (ESD), fire and gas (F&G), and process shutdown (PSD) functions across hazardous industrial environments.

This module is typically deployed in safety-critical nodes where system reliability cannot be compromised, such as offshore oil platforms, chemical processing units, and LNG liquefaction trains. The YOKOGAWA AVR10D-Q22020 ensures deterministic communication between redundant CPUs, monitors health status, and executes automatic switchover without process interruption. While not a standard catalog item, this configuration reflects Yokogawa’s capability to deliver tailored safety solutions for complex, large-scale projects requiring enhanced traceability and lifecycle support. With its robust design, real-time diagnostics, and deep integration into the CENTUM VP/ProSafe-RS converged architecture, the YOKOGAWA AVR10D-Q22020 exemplifies Yokogawa’s commitment to operational safety and system resilience.

Technical Specifications

Main Features and Advantages

The YOKOGAWA AVR10D-Q22020 delivers unparalleled reliability in safety-critical control systems by ensuring continuous operation even in the event of hardware or communication failures. Its core function—managing redundancy at the CPU level—enables automatic detection of faults and instantaneous switchover to a standby processor, all without disrupting safety logic execution. This high-availability architecture is essential in industries where even a millisecond of downtime can lead to catastrophic consequences.

A key advantage of the YOKOGAWA AVR10D-Q22020 is its deterministic synchronization mechanism, which uses Yokogawa’s proprietary RS922 bus to maintain precise timing alignment between redundant CPUs. This eliminates data inconsistency and ensures coherent voting in triple-modular redundant (TMR) configurations. The module continuously monitors CPU status, memory integrity, and communication links, providing early warning of potential issues through the ProSafe-RS diagnostics interface.

Although a project-specific variant, the YOKOGAWA AVR10D-Q22020 benefits from the same rigorous design and quality assurance as standard ProSafe-RS components. It supports hot-swap replacement, minimizing maintenance impact on live safety systems. Fully integrated with Yokogawa’s Exaquantum Safety Server and Plant Resource Manager (PRM), the YOKOGAWA AVR10D-Q22020 enables remote monitoring, event logging, and predictive maintenance—transforming safety systems from passive protectors into active contributors to operational intelligence.

Application Field

The YOKOGAWA AVR10D-Q22020 is primarily deployed in high-risk industrial facilities where functional safety is non-negotiable. In offshore oil and gas production, it forms the backbone of emergency shutdown systems, ensuring that wellhead isolation, blowdown, and fire suppression functions remain operational even during control system faults. Its redundancy management capability is critical in environments where remote access for repairs is limited and system failure could result in environmental or safety disasters.

In petrochemical plants, the YOKOGAWA AVR10D-Q22020 supports process shutdown systems that protect reactors, distillation columns, and storage tanks from overpressure, overheating, or hazardous leaks. Its integration with the CENTUM VP DCS allows for unified monitoring of both process and safety systems, enhancing operator situational awareness and reducing response time during emergencies.

The YOKOGAWA AVR10D-Q22020 is also utilized in liquefied natural gas (LNG) facilities, where cryogenic processes demand uninterrupted safety monitoring. In power generation, particularly in combined cycle and hydrogen-ready plants, it safeguards turbine systems and fuel gas supply trains. As a project-specific module, the YOKOGAWA AVR10D-Q22020 is typically found in large EPC (Engineering, Procurement, and Construction) projects where Yokogawa delivers fully engineered safety solutions with customized configurations, long-term support, and full documentation traceability.

Related Products

PRM10D: Standard Primary Redundancy Module in ProSafe-RS, functionally equivalent to the YOKOGAWA AVR10D-Q22020, used for CPU redundancy and synchronization.
PRCK10: ProSafe-RS CPU Module that works in conjunction with the YOKOGAWA AVR10D-Q22020 to execute safety logic.
ACM11: Common Module for ProSafe-RS, providing power and signal distribution.
ProSafe-RS ES: Engineering Station used for configuring and downloading logic to safety controllers involving the YOKOGAWA AVR10D-Q22020.
CENTUM VP R6.08 or later: Integrated production control system that interoperates with ProSafe-RS for converged control and safety.
Exaquantum Safety Server: Enables historical logging and reporting of safety events from systems using the YOKOGAWA AVR10D-Q22020.
FieldMate R3.07+: Device management tool for configuring safety system components and diagnostics.
Vnet/IP Network: Yokogawa’s control network that ensures high-speed, redundant communication between safety and process systems.