Product Overview

The Yokogawa AFV10D S2 is a high-performance Field Control Unit (FCS) designed as the primary control node for the CENTUM VP Distributed Control System (DCS). This duplexed unit provides the computational foundation for regulatory control, sequence logic execution, and process signal management. By utilizing a redundant hardware architecture, the AFV10D S2 ensures maximum system availability, allowing for seamless failover between processor modules without interrupting active plant processes.

Engineered for the Vnet/IP high-speed control network, the AFV10D S2 coordinates communication between I/O nodes and supervisory stations. It is specifically built for mission-critical applications in the oil and gas, petrochemical, and power generation industries, where hardware reliability and deterministic control timing are essential for operational safety and efficiency.

Technical Specifications

• Manufacturer: Yokogawa

• Model Number: AFV10D S2

• Type: Duplexed Field Control Unit (FCS)

• Processor: VR5432 (133 MHz)

• Main Memory: 32 MB

• Network Interface: Vnet/IP (Dual-redundant support)

• I/O Support: FIO (Field Interface Orbus) architecture

• Battery Backup: Up to 72 hours of data retention; 48-hour minimum recharge cycle

• Form Factor: 19-inch rack-mountable (5U height)

• Weight: 2.44 kg (Standard configuration)

• Dimensions: 48.2 cm x 22.2 cm x 5.5 cm

• Origin: Japan

Key Technical Characteristics

• Redundant Control Logic: The duplexed configuration features dual-processor modules operating in parallel with synchronized memory. This fault-tolerant design prevents system downtime by automatically switching to the standby controller if a fault is detected in the primary unit.

• High-Speed Processing: Equipped with a 133 MHz RISC processor, the unit handles high-density control loops and complex computational algorithms with minimal scan-time latency, ensuring stable process regulation.

• Integrated Vnet/IP Communication: Supports the Vnet/IP protocol, which provides high-capacity, real-time data transmission over standard 1-Gbps Ethernet physical layers while maintaining the deterministic performance required for DCS environments.

• Advanced Data Protection: A robust battery backup system safeguards volatile memory, preserving control parameters and sequence states for up to three days during complete power loss.

• Scalable FIO Interface: Acts as the master controller for various FIO I/O modules, allowing for flexible expansion of analog and digital points across the control network.

• Industrial Hardening: Certified for operation in challenging environments, the AFV10D S2 is resistant to thermal fluctuations and high humidity, ensuring long-term hardware integrity in diverse industrial control rooms.