This processor module serves as the central control engine for Yokogawa CENTUM VP distributed control systems. It executes complex control strategies with exceptional speed and reliability. We engineered the Yokogawa CP451-11 as a high-performance CPU for demanding process automation applications. This module manages extensive I/O configurations and sophisticated regulatory control loops. It ensures deterministic scan execution for time-critical process operations. Therefore, your CENTUM VP system maintains optimal control performance and operational efficiency.
Physical Configuration and System Integration
The Yokogawa CP451-11 features a compact form factor for the CENTUM VP node cabinet. Its dimensions measure 120.0 mm in height, 52.0 mm in width, and 125.0 mm in depth. The processor weighs approximately 0.4 kilograms for straightforward installation procedures. This unit occupies a single slot in the ESB bus node. It connects to the system via the standard backplane interface. The processor provides comprehensive LED indicators for operational monitoring and diagnostics.
Processing Power and Memory Specifications
This processor module operates with a high-performance 32-bit RISC microprocessor architecture. It delivers rapid instruction execution for complex control algorithms. The Yokogawa CP451-11 provides substantial memory capacity for extensive control programs. It includes integrated RAM with battery backup for reliable data retention. The module supports all CENTUM VP control functions and libraries. It features a built-in real-time clock for scheduled operations. Consequently, this offers exceptional processing capability for sophisticated automation strategies.
Detailed Technical Specifications and Interface Details
We present the processor’s comprehensive technical parameters and operational capabilities below.
| Specification | Detail |
|---|---|
| Part Number | Yokogawa CP451-11 |
| Product Category | Processor Module |
| Dimensions (H x W x D) | 120.0 mm x 52.0 mm x 125.0 mm |
| Processor Weight | Approximately 0.4 kg (0.88 lbs) |
| CPU Architecture | 32-bit RISC microprocessor |
| Program Memory | 8 MB Flash (user program storage) |
| Data Memory | 2 MB RAM (battery-backed) |
| Control Functions | Regulatory, sequential, and batch control |
| Programming Languages | IEC 61131-3 (LD, FBD, ST, SFC, IL) |
| Bit Instruction Time | 0.1 µs |
| Floating Point Speed | 1.0 µs (32-bit) |
| Maximum I/O Capacity | 1024 I/O points |
| Maximum Control Loops | 128 PID loops |
| Real-Time Clock | Integrated with battery backup |
| Battery Type | Lithium 3.0 V (replaceable) |
| Backup Duration | Approximately 2 years minimum |
| Diagnostic Indicators | RUN, RDY, ERR, COM status LEDs |
| Communication Interface 1 | ESB bus (backplane) |
| Communication Interface 2 | RS-232 service port (front) |
| Supported Protocols | Vnet/IP, Modbus, CENTUM proprietary |
| Power Supply Voltage | 5 VDC from backplane |
| Power Consumption | 3.5 W typical |
| Operating Temperature | 0°C to 55°C (32°F to 131°F) |
| Storage Temperature | -20°C to 70°C (-4°F to 158°F) |
| Compliance | CE, RoHS |
Details
| Weight | 0.4 kg |
|---|---|
| Dimensions | 120 × 52 × 125 mm |
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