Product Overview

The Yokogawa AFV30D-S2 is a high-availability Duplexed Field Control Unit (FCS) that serves as the central intelligence for the CENTUM VP Distributed Control System (DCS). Engineered for mission-critical industrial processes, this unit features a redundant architecture to ensure continuous plant operation. By housing two synchronized processor modules, the AFV30D-S2 eliminates single points of failure; if the active controller detects a fault, the standby unit takes over control instantaneously without interrupting the process.

Designed for 19-inch rack mounting, this unit efficiently manages I/O communication, control logic execution, and data synchronization across the Vnet/IP network. It is the preferred choice for large-scale facilities such as oil refineries, chemical plants, and power stations where downtime results in significant operational loss.

Technical Specifications

• Manufacturer: Yokogawa

• Model Number: AFV30D-S2

• Module Type: Duplexed Field Control Unit (Redundant)

• System Compatibility: CENTUM VP

• Network Protocol: Vnet/IP (1 Gbps High-Speed Control Bus)

• Processor Configuration: Dual-redundant (Duplexed)

• Power Supply: Dual-redundant AC or DC inputs supported

• Mounting: Standard 19-inch Rack Mount

• Operating Temperature: 0 to 50°C (Standard Industrial)

• Safety Certifications: UL/CSA, CE, and KC Marking

• Dimensions: 82 mm x 262 mm x 210 mm

• Weight: 3.38 kg

• Origin: Japan

Key Technical Characteristics

• Bumpless Redundancy: The duplexed configuration ensures that the standby processor remains in perfect synchronization with the active unit. In the event of a hardware transition, the switchover is "bumpless," meaning there is no loss of data or control continuity.

• Vnet/IP Connectivity: Built-in support for the Vnet/IP protocol allows for deterministic, high-speed communication between the control unit and Human Interface Stations (HIS), ensuring real-time process visibility.

• Industrial Hardening: The internal circuitry is protected with high-quality conformal coating, making the hardware resistant to corrosive gases (ISA G3 compliant environments) and increasing the lifespan of the equipment in harsh chemical climates.

• Flexible Expansion: The AFV30D-S2 manages local and remote I/O nodes via the ESB bus or Optical ESB bus, allowing for extensive plant-wide distribution of I/O points while maintaining centralized logic execution.

• Advanced Calculation Support: Optimized for complex process calculations and sequence control, providing the computational power necessary for modern Industry 4.0 automation requirements.

• Global Compliance: Fully certified to international electrical and safety standards (CE, UL, CSA), ensuring the unit can be deployed in regulated markets worldwide with complete regulatory adherence.