Toshiba HFAS11S High Performance DCS Main Controller Module

HFAS11S is the core CPU controller of Toshiba CIEMAC nV Series distributed control system, a 32-bit high-speed industrial rack-mounted main control unit manufactured in Japan. It executes all closed-loop process logic, I/O data processing and multi-network communication scheduling for power plant, chemical and metallurgy large-scale DCS systems, fully compliant with IEC 61131-3 international programming standards.

This controller adopts independent RISC processing architecture with ECC error-correcting memory to avoid data corruption. It supports dual redundant hot-backup configuration, dual 100Mbps TC-net fiber ring I/O bus and gigabit Ethernet monitoring network. Widely stocked as spare core control hardware for overhaul, replacement and capacity expansion of legacy Toshiba CIEMAC DCS cabinets.

Main Specifications

• Brand: Toshiba; Model: HFAS11S, Series: CIEMAC nV DCS Controller
• Core Performance: 32-bit RISC CPU; bit operation 20ns, floating-point arithmetic 120ns
• Program & Data Storage: Max 256K program steps; 256K local/global variables, 16384 I/O words
• Task Scheduling: 3 independent periodic tasks (0.5ms~1000ms), total 16 interrupt tasks
• Communication Interfaces: Dual redundant TC-net I/O ring (100Mbps fiber), Gigabit Ethernet system bus
• Programming Standard: IEC61131-3 languages: LD, FBD, SFC, ST; compatible nV-Tool engineering software
• Redundancy Design: Support dual-controller hot standby, redundant network loop fault self-switching
• Memory Reliability: Built-in ECC error correction circuit for all internal storage
• Environment: Operating temp 0℃~+55℃, IP20 cabinet protection, industrial EMC anti-interference grade
• Application: Spare main CPU module for Toshiba CIEMAC nV series distributed control system

Core Functions

• Centralized collection of all field I/O signal data via TC-net fiber ring bus, execute PID, interlock and safety protection logic
• Real-time transmission of process values, alarm logs and historical trend data to operator stations through gigabit Ethernet
• Support dual redundant controller hot backup; automatic seamless switch when master controller fails without process interruption
• Multi-task parallel scheduling ensures ultra-short control cycles for high-precision thermal power and chemical process regulation
• ECC memory correction eliminates data loss caused by industrial electromagnetic interference, improving long-term stable operation
• Compatible with full series Toshiba SIO I/O modules, serial communication cards and Ethernet gateway expansion modules
• Web remote monitoring and instrument loop diagram online editing via matched nV-Tool engineering platform

Application Scenarios

• Thermal power plant boiler, steam turbine and auxiliary system Toshiba CIEMAC DCS central control cabinet core layout
• Petrochemical refining, natural gas processing continuous production process distributed control system main control unit configuration
• Metallurgy heating furnace, municipal large-scale water treatment plant high-reliability redundant DCS control projects
• On-site faulty main controller replacement and regular overhaul maintenance of Toshiba legacy nV series DCS racks
• Old factory automation renovation to upgrade DCS control speed, storage capacity and redundant safety performance
• Toshiba CIEMAC nV series core controller spare parts inventory backup for energy and heavy process manufacturing enterprises
• Thermal power unit, chemical reactor critical process uninterrupted control redundant CPU transformation engineering