Yokogawa AFG10S 32MB Field Control Unit RIO Bus

Product Overview

The Yokogawa AFG10S is a duplexed Field Control Unit (FCU) designed as the processing core of the Field Control Station (FCS) within Yokogawa’s CENTUM VP and CENTUM CS 3000 Distributed Control System (DCS) architectures. As an intelligence-bearing module, the Yokogawa AFG10S executes deterministic control logic, manages regulatory and sequence control tasks, and communicates with Remote I/O (RIO) nodes through the Vnet/IP control network and RIO bus. The unit serves as the computational heart of process automation systems in industries where continuous uptime and precise control are non-negotiable requirements.

The Yokogawa AFG10S is built around a VR5432 RISC processor running at 133 MHz, paired with 32 MB of main memory. This memory capacity distinguishes the AFG10S from the entry-level AFS10S model, which carries 16 MB . The additional memory enables the Yokogawa AFG10S to handle larger application programs and more complex control strategies without performance degradation. Battery-backed memory retention preserves critical data for up to 72 hours during power interruptions, with a minimum recharge time of 48 hours .

The Yokogawa AFG10S supports dual-redundant configurations across processors, power supplies, and communication paths, effectively eliminating single points of failure in mission-critical industrial environments . It interfaces directly with Yokogawa’s RIO and FIO module families, providing flexibility in I/O selection for diverse process applications. The unit is available in 19-inch rack-mountable form factor with power input options spanning 100–120 V AC, 220–240 V AC, or 24 V DC, accommodating varied plant infrastructure requirements .

Technical Specifications