The Yokogawa AFS30D, also cataloged as the AFS30D Processor Module, operates as a dedicated hardware component for control logic execution, real-time data processing, and synchronized network routing within CENTUM distributed control systems (DCS). The module utilizes dual-redundant processing logic natively at the hardware tier to coordinate high-speed control variables across distributed field networks.
Hardware Specifications
Parameter
Specification
Model
AFS30D
Brand
Yokogawa
Series
CENTUM CS 3000 / VP Series
Origin
Japan
Weight
Standard CENTUM processor module mass
Dimensions
Dedicated standard slot architecture profile geometry
Main Memory Capacity
16 Mbyte volatile processing memory matrix
Memory Protection
Integrated battery back-up tracking; 72 hours maximum discharge
Battery Recharge Time
48 hours minimum continuous recharge cycle limit
Network Protocols
Dual-channel VNET high-speed control link and FIO bus interfaces
Architecture Topology
Duplexed processor configuration for fault tolerance
Diagnostic Support
Hardware-tier active self-diagnostics and thermal tracking
Product Type
CPU Processors
Process Control & DCS Instrumentation Interface
Channel-to-Channel Isolation and Memory Protection The processor core connects to modular field backplanes featuring strict electrical isolation parameters to block field-side voltage transients from disrupting internal processing logic. To prevent software table losses during sudden external power drops, the 16 Mbyte main memory matrix transitions immediately to an integrated battery back-up circuit natively at the hardware tier to preserve logic registers for up to 72 hours.
4-20 mA HART Loop Protocol and Synchronous Networks The module incorporates dedicated transceivers that divide data traffic into distinct physical zones. The internal logic handles high-speed, deterministic loop orchestration and process variables over Yokogawa's VNET control network while concurrently mapping digital field variables riding over standard 4-20 mA HART loop protocol lines via the integrated Fieldbus I/O (FIO) subsystem interface without introducing processing latency.
