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YOKOGAWA CP451-50 Control CPU module

YOKOGAWA CP451-50 is the core process control CPU module of the Centum VP Distributed Control System (DCS) under Yokogawa Electric, designed specifically for industrial process automation control scenarios. Its core functions are to undertake system control logic operation, data acquisition and processing, equipment communication scheduling and redundancy management tasks, support hot redundancy configuration architecture, and realize millisecond-level disturbance-free switching with redundant partner modules. It has built-in multiple industrial communication protocol interfaces, seamlessly links with I/O modules and communication modules through the system bus, integrates fault self-diagnosis and alarm functions, provides a highly reliable and real-time control core for continuous production processes, and is the main control unit for key equipment in industries such as petrochemical and power energy.

YOKOGAWA CP451-50 Control CPU module

Specific Parameters

Brand YOKOGAWA (Yokogawa Electric, Japanese Brand)
Product Series Centum VP Series DCS Controller
Product Type Process Control CPU Module
Model CP451-50
Processor Architecture 32-bit RISC Processor
Control Cycle Basic control cycle 100ms, fastest control cycle 20ms
Memory Configuration 256MB program memory, 128MB data memory
Supported Control Loops Up to 4000 PID loops
Communication Interfaces Built-in Vnet/IP bus interface, supporting Ethernet/IP, Modbus TCP
Redundancy Mode 1:1 hot redundancy configuration
Supply Voltage 5VDC (powered by system power supply module)
Power Consumption 15W
Operating Temperature Range 0℃ to 50℃
Storage Temperature Range -20℃ to 70℃
Relative Humidity 5% to 90%, no condensation
Protection Level IP20
Physical Dimensions 100mm×175mm×250mm
Physical Weight Approximately 2.0kg
Compatible System Centum VP DCS system, compatible with Vnet/IP network
Programming Software Supporting CENTUM VP Engineering Environment software
Certification Compliant with UL, CSA, CE, ATEX explosion-proof certification

Product Performance

1:1 hot redundancy architecture design, master and standby modules synchronize data in real time, realize disturbance-free switching in case of failure, switching time less than 1ms, ensuring continuity of production process.
32-bit RISC processor combined with high-speed control cycle can efficiently run thousands of PID control loops, meeting the real-time requirements of complex process control.
Large-capacity program and data memory support storing complex control logic and historical data, and local data caching can be realized without external storage devices.
Built-in multi-protocol communication interfaces can seamlessly connect with third-party PLC and SCADA systems, breaking the data interaction barrier of heterogeneous systems.
Integrated complete self-diagnosis function can real-time monitor module hardware, communication links and control program status, and fault information is quickly uploaded to the operation station.
Industrial-grade wide-temperature design and anti-electromagnetic interference capability enable long-term stable operation in industrial sites with strong interference and high dust, and the Mean Time Between Failures (MTBF) exceeds 100,000 hours.
Deeply compatible with Centum VP series I/O modules and communication modules, supporting online expansion and hot swapping, greatly reducing system maintenance downtime.
Supports function block programming and ladder diagram programming, meeting the programming habits of different engineers and shortening project development and debugging cycles.




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