Yokogawa CP451-10 S2 is a high-performance processor module and the core component of the CENTUM VP/DCS control system, specially designed for industrial automation and process control applications. Equipped with a high-performance CPU, it can efficiently handle complex control algorithms and large volumes of data to ensure system real-time performance and stability. The module supports redundant configuration, which can automatically switch when the main processor fails, enhancing system reliability and reducing the risk of downtime. It has rich communication interfaces, enabling seamless connection with various field devices and upper-level systems to achieve data interaction and collaborative control. Widely used in chemical, petroleum, power and other fields, it provides a solid support for the precise control and safe operation of production processes and is a key component of modern industrial automation systems.
I. Basic Specifications
Processor Performance
CPU: Dual-core ARM Cortex-A9, 1.2 GHz clock speed
Memory: 2GB DDR3 RAM (expandable to 4GB)
Storage: 8GB eMMC flash memory (for system and applications)
Real-time Capability: Millisecond-level control cycle support, meeting high-speed process control requirements
Interface Configuration
System Bus: Redundant V-Net/IP (1Gbps Ethernet) for high-speed data transfer
I/O Bus: RIO bus (redundant configuration) for real-time communication with I/O modules
External Interfaces: 2 Ethernet ports (RJ45), 2 USB 2.0 ports, 1 RS-232C port
Expansion Slots: Up to 4 expansion card slots for communication protocol expansion
Operating Environment
Temperature Range: -10°C to +60°C (non-condensing)
Humidity Range: 5% to 95% (non-condensing)
Vibration Resistance: 1.5g (5-500Hz)
Shock Resistance: 10g (11ms duration)
II. Core Functions
Control Capabilities
Supports IEC 61131-3 standard programming languages (LD, FBD, ST, IL, SFC)
Built-in PID control algorithms with support for advanced strategies (e.g., predictive control, adaptive control)
Maximum I/O points: 20,000 (depending on system configuration)
Redundancy and Fault Tolerance
Hot redundancy support: Configurable dual CPU redundancy with switchover time < 50ms
Power supply redundancy: Supports dual-channel 24VDC redundant power supply
Communication redundancy: Both V-Net/IP bus and RIO bus support redundant configuration
Safety Features
SIL certification: Complies with IEC 61508 SIL2 safety standard (requires matching safety I/O modules)
Fault detection: Real-time monitoring of CPU, memory, and bus status; automatic switch to backup module in case of failure
Data protection: Supports program and configuration backup/restore to prevent data loss
Communication Protocols
Built-in protocols: Modbus TCP/RTU, OPC UA, Profibus DP/PA, HART
Optional extended protocols: Foundation Fieldbus, BACnet, Ethernet/IP, etc.
Industrial Internet of Things (IIoT) support: Connectable to cloud platforms (e.g., Yokogawa Exaquantum)
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