CP451-51 Yokogawa control processor module

Description

Yokogawa CP451-51 – Product Description & Technical Specifications
Product Description
The Yokogawa CP451-51 is a  control processor module designed as a core computing unit for Yokogawa CENTUM CS 3000 and CENTUM VP distributed control systems (DCS). It executes real-time process control logic, manages I/O subsystems, coordinates system communication, and supports redundant operation for mission-critical industrial applications including oil & gas, petrochemicals, power generation, and pharmaceuticals. This module offers enhanced processing power and memory capacity compared to earlier CP451 variants, ensuring stable, high-speed control in demanding industrial environments.

Basic Information
Brand: Yokogawa
Model: CP451-51
Product Type: Field Control Processor Module (FCS CPU)
Weight: Approximately 1.2 kg
Dimensions: 51 mm × 152 mm × 203 mm (W × H × D)
Country of Origin: Japan
HS Code: 8537109060 (for reference)
Temperature Specifications
Operating Temperature: 0 °C to +55 °C
Storage Temperature: -20 °C to +70 °C
Temperature Drift: Compliant with Yokogawa industrial standards for stable control performance
Input Specifications
Power Input: 24 V DC ±10% (18–30 V DC); redundant power input supported
Current Consumption: Typical 1.0 A @ 24 V DC
Power Consumption: Approximately 20 W
Processor: 32-bit industrial-grade RISC processor (1.0 GHz)
Memory: 512 MB RAM + 1 GB Flash memory
Bus Interfaces: Redundant Vnet/IP (system communication); ESB bus (I/O subsystem)
Isolation: System-level isolation (signal, power, communication)
I/O Expansion Input: Supports up to 256 mixed analog/digital input points via compatible I/O modules
Output Specifications
Communication Outputs: Redundant Vnet/IP; Ethernet (TCP/IP, Modbus TCP); RS-485 (Modbus RTU)
Control Output: Real-time control signals to connected I/O modules; supports up to 256 mixed analog/digital output points
Scan Cycle: ≤10 ms for standard control tasks; optimized for complex algorithm execution
Redundancy Output: Dual-module hot standby with failover time <100 ms
Diagnostic Output: LED indicators for power, status, communication, and fault conditions
Physical & Environmental Parameters
Vibration Resistance: 10–500 Hz (compliant with IEC 60068-2-6)
Humidity: 5%–95% RH (non-condensing)
Protection Level: IP20Cooling: Natural convection (fanless design for high MTBF)
Mounting: Rack-mounted on CENTUM VP FCS backplane
Certifications: CE, UL, CSA
Key Features
High-performance 1.0 GHz 32-bit RISC processor for fast real-time control execution
Supports dual-module redundancy for maximum system availability and seamless failover
Fanless design ensures silent operation and high reliability in harsh industrial environments
Redundant Vnet/IP and ESB buses for fault-tolerant communication
Expanded memory capacity (512 MB RAM + 1 GB Flash) for complex control logic and data storage
Built-in self-test, LED diagnostics, and watchdog timer for reliable operation
Seamless integration with Yokogawa CENTUM CS 3000 and CENTUM VP DCS ecosystems
Compact form factor for efficient rack space utilization

CP451-51 PDF
CP451-51

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