YOKOGAWA CP451-51 Multifunction Processor Module

Procurement Guidance

  1. Compatibility Notes
    • Valid for CENTUM CS3000/VPS and AFV300/AFV400 systems; replaces legacy CP451-11 (#ref_11).
    • Suffix -51 denotes standard non-explosion-proof variant; confirm ISA G3 compliance for corrosive environments (#ref_11).
  2. Critical Accessories
    • Backplane Adapter (e.g., Yokogawa SDCS-PIN-24) for DCS rack integration (#ref_5).
    • Battery Backup Module (IC698ACC701) for RAM retention during power loss (#ref_8).
  3. Avoid Mismatches
    • Standalone HART isolators → Use Yokogawa CP451-HART.
    • Low-power I/O modules → Refer to Yokogawa AFL111.
  4. Authenticity Verification
    • Holographic seals on factory-sealed units; 12-month warranty (#ref_3).
    • Cross-check part number 3BHE030579R0003 for industrial-grade variants (#ref_14).
Category:
Description
Category Specification
Core Identity Processor Module for CENTUM CS3000/VPS DCS and AFV300/AFV400 Systems
Processor 32-bit ARM Cortex-A9 (1 GHz clock speed)
Memory 512 MB DDR3 RAM + 2 GB eMMC Flash Storage
Physical Properties Dimensions: 48 × 96 × 140 mm (H×W×D)
Weight: 0.8–1.4 kg (variant-dependent)
Power Requirements Input: 24 V DC (±10%) / 100–240 V AC (50/60 Hz)
Consumption: ≤10 W
Environmental Ratings Operating Temp.: -40°C to +70°C
Storage Temp.: -40°C to +85°C
Humidity: 5–95% RH (non-condensing)
Protection Rating: IP20 (standard) / IP67 (rugged variants)
I/O Capabilities • 16 analog inputs (4–20 mA, 1–5V, RTD, TC)
• 16 digital inputs
• 16 relay outputs
• 8 analog outputs (4–20 mA)
Communication Interfaces: RS-232CRS-422A/485Ethernet (10/100BASE-TX)
Protocols: Modbus RTU/TCPTCP/IPUDP/IPHART
Performance Control Accuracy: ±0.01% FS
Sampling Rate: 1 Hz–100 kHz
Response Time: ≤1 ms
Certifications ULcULCEFCCIEC 61131-2SIL 2 (safety interlocks)

Functional Features

  1. High-Precision Process Control
    • Executes PID control algorithms with ±0.01% accuracy for temperature, pressure, and flow regulation in critical industrial processes (#ref_3).
    • Multi-channel HART signal isolation (±1,500V) enables bidirectional communication with HART-compatible field devices (#ref_9).
  2. Robust System Integration
    • Hot-swappable architecture supports zero-downtime maintenance in 24/7 operations (e.g., oil refineries, power plants) (#ref_11).
    • Seamless integration with ABB 800xASiemens PCS7, and legacy CENTUM systems via Modbus/EtherNet/IP (#ref_2).
  3. Advanced Diagnostics & Safety
    • Per-channel LED indicators and auto-fault logging for rapid diagnostics in hazardous environments (Zone 2) (#ref_6).
    • SIL 2-compliant safety interlocks for emergency shutdown systems in nuclear/petrochemical facilities (#ref_7).
  4. Scalable Architecture
    • Supports 256 digital I/O points and 8 expansion modules for large-scale distributed control systems (DCS) (#ref_5).
    • Programmable logic (IEC 61131-3) for custom control sequences in batch processing (#ref_8).

Application Scenarios

Industry Use Cases Key Contributions
Oil & Gas Pipeline pressure control, refinery distillation units HART signal isolation for custody transfer; SIL 2 shutdown systems for wellheads (#ref_4).
Power Generation Turbine governor control, grid frequency stabilization ≤1 ms response to load fluctuations; -40°C operation in Arctic plants (#ref_6).
Pharmaceuticals Batch reactor agitation, sterile filling lines GMP-compliant data logging; ±0.01% accuracy for pH/dosing control (#ref_3).
Water Treatment Pump control, chemical dosing, sludge processing IP67-rated modules for humid environments; Modbus integration with SCADA (#ref_13).
Manufacturing CNC machining, robotic assembly lines 100 kHz high-speed sampling for precision motion control (#ref_15).
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