Foxboro PO121RK Field Control Processor Module

Product Description

The Foxboro PO121RK is a high-performance Field Control Processor (FCP) engineered for Foxboro I/A Series and Evo S-series DCS platforms. It delivers real-time control, logic execution, and I/O management for complex industrial processes. Designed for mission-critical environments, the module supports redundant configurations to maintain continuous operation and fault-tolerant performance. Its scalable architecture accommodates both compact systems and extensive multi-loop networks.

The PO121RK is ideal for applications in oil & gas, chemical processing, power generation, and pharmaceutical manufacturing, offering seamless integration with Foxboro DCS architectures.

Technical Specifications

General Information

• Model: PO121RK

• Product Type: Field Control Processor Module

• Manufacturer: Foxboro

• Country of Origin: USA

• Applications: Real-time process control, I/O communication, distributed processing

Performance & Hardware

• Processor: Embedded industrial CPU

• Control Functions: Regulatory control, logic and timing, sequential control, real-time alarming, diagnostics

• Memory Options:

• Evo S-series: 16 MB SDRAM + 32 MB Flash

• I/A Series: 64 MB RAM + 128 MB Flash

Power & Environmental

• Power Supply: 24 VDC nominal, supports redundant inputs

• Power Consumption: ≤ 8.5 W

• Operating Temperature:

• Evo S-series: –20°C to +70°C

• I/A Series: –20°C to +60°C

Communication Interfaces

• Ethernet

• Serial

• Modbus

• Peer-to-peer communication

• Proprietary Foxboro protocols

I/O Capacity

• Analog Inputs: Up to 64 channels

• Analog Outputs: Up to 32 channels

• Digital Inputs: Up to 64 channels

• Digital Outputs: Up to 32 channels (configuration-dependent)

Mechanical & Mounting

• Dimensions: 6 × 18 × 20 cm (typical)

• Weight: 0.6 kg

• Mounting: Field-mountable vertical baseplate; DIN-rail or panel installation for I/A Series

Key Features

• Executes real-time control strategies with low latency

• Redundant architecture ensures high availability

• Scalable design for small or large DCS networks

• Advanced diagnostics and system health monitoring

• Compact footprint for space-constrained control cabinets

• Fully compatible with Foxboro I/A and Evo S-series systems

Applications

• Oil & Gas Process Automation

• Chemical Plant Control Systems

• Power Generation DCS Integration

• Pharmaceutical Production Lines

FAQ

Q: Can the PO121RK handle redundant configurations?
A: Yes, it supports redundant setups for continuous, fault-tolerant operation.

Q: What are the I/O capacities for this module?
A: Up to 64 analog inputs, 32 analog outputs, 64 digital inputs, and 32 digital outputs depending on configuration.

Q: Is this module compatible with both I/A Series and Evo S-series?
A: Yes, it integrates seamlessly with both system architectures.

Q: What environments is the PO121RK suitable for?
A: It is designed for industrial and hazardous locations, including oil & gas, chemical, power, and pharmaceutical facilities.