Description

Technical Specifications

• Product Model: FCP280 RH924YA
• Brand: Foxboro
• Warranty: One Year
• Power Supply: 24 VDC industrial backplane powered
• Operating Temperature: -40°C ~ +70°C
• Storage Temperature: -55°C ~ +85°C
• Response Time: High-speed deterministic control loop scan ≤ 1ms
• Protection Class: IP20 rack-mounted Eurocard module, PCB conformal coating
• Accuracy Class: N/A (core DCS field computing unit)
• Processor: 32-bit high-performance RISC embedded CPU
• Memory: 256KB RAM, 512KB Flash ROM
• Max I/O Capacity: Supports up to 128 FBM fieldbus modules, total 256 process I/O points
• Communication Interfaces: 2×EIA232, 1×EIA485, internal DCS backplane bus, system Ethernet port
• Supported Protocols: Foxboro proprietary DCS bus, Modbus RTU, Profibus DP, DeviceNet
• Overload Protection: Reverse polarity, ESD, surge, per-channel short-circuit and bus fault isolation
• Dimensions: 153 mm × 52 mm × 116 mm
• 

Product Overview

The FCP280 RH924YA is a core redundant Field Control Processor (FCP) designed for Foxboro I/A Series and ABB Symphony Plus distributed control systems, serving as the decentralized field-level computing brain for large-scale process plants. It directly pairs with FBM fieldbus I/O modules to complete full-cycle tasks including analog signal acquisition, PID closed-loop regulation, discrete interlock logic, sequential batch control, alarm event capture and fault diagnosis.

This processor solves critical reliability bottlenecks of centralized DCS architecture. It supports hot standby redundant pairing with a second FCP280 module, realizing bumpless automatic failover within microseconds if the primary controller fails, eliminating single-point shutdown risks for critical loops. Its self-hosting boot function enables standalone continuous control even when disconnected from the upper HMI server or engineering workstation, ensuring safety protection logic remains effective during network outages.