YOKOGAWA CP461-50 S2

Description

1. Product Overview

2. Product Parameters

2.1 Core Processing Specifications

• CPU Type: 32-bit RISC processor
• Clock Speed: 1.2 GHz
• Memory: 2 GB DDR3 RAM (process data), 4 GB flash memory (program storage)
• Control Loop Capacity: Up to 2,000 PID loops
• I/O Handling Capacity: Up to 16,384 I/O points (via remote I/O modules)
• Scan Time: 10 ms (basic control loops), 1 ms (high-speed control)

2.2 Communication Specifications

• Built-In Interfaces: 2× Ethernet ports (1000BASE-T), 1× RS-232C port, 1× USB 2.0 port
• Communication Protocols: TCP/IP, Modbus TCP/IP, OPC UA, FOUNDATION Fieldbus, HART
• Redundancy Support: Hot standby (1:1) configuration for CPU and communication paths
• Data Transfer Rate: 1 Gbps (Ethernet), 115.2 kbps (RS-232C)

2.3 Electrical Parameters

• Power Supply: 24 VDC ±10% (redundant power inputs)
• Power Consumption: ≤30 W (normal operation), ≤5 W (standby mode)
• Isolation: 2500 VAC between power supply and communication interfaces
• Surge Protection: IEC 61000-4-5 compliant (2 kV surge immunity)

2.4 Environmental & Mechanical Parameters

• Operating Temperature: 0°C to +55°C
• Storage Temperature: -20°C to +70°C
• Relative Humidity: 5%–95% (non-condensing, no dew formation)
• Protection Rating: IP20 (rack-mounted in control cabinet)
• Dimensions: 175 mm × 260 mm × 45 mm (L×W×H)
• Mounting: Yokogawa CENTUM VP S2 rack (7-slot or 14-slot)

2.5 Certification & Compatibility

• Certifications: CE, UL 61010-1, ATEX II 2G Ex ib IIC T4, IECEx, SIL 2 (per IEC 61508)
• Compatible Systems: Yokogawa CENTUM VP DCS, ProSafe-RS safety system, Exaquantum plant information management (PIM) system
• Software Compatibility: CENTUM VP Engineering Environment (CEE), VP Conductor

3. Advantages & Features

1. High Processing Performance: YOKOGAWA CP461-50 S2’s 1.2 GHz RISC processor and 2 GB RAM enable fast execution of complex control algorithms, supporting up to 2,000 PID loops and 16,384 I/O points for large-scale process control applications.
2. Redundant Fault Tolerance: The module supports hot standby CPU and power supply configurations, ensuring YOKOGAWA CP461-50 S2 continues operation even if a primary component fails—critical for safety-critical processes like chemical reactor control.
3. Multi-Protocol Communication: YOKOGAWA CP461-50 S2 integrates Ethernet, Fieldbus, and HART interfaces, enabling seamless data exchange with field instruments, third-party DCS, and cloud-based analytics platforms (e.g., Yokogawa Exaquantum).
4. Easy Maintenance & Upgrade: YOKOGAWA CP461-50 S2 supports online firmware updates and hot-swappable installation, minimizing downtime during maintenance or system upgrades.
5. SIL 2 Compliance: The module meets IEC 61508 SIL 2 standards, making YOKOGAWA CP461-50 S2 suitable for safety-related control functions in industrial plants.

4. Application Fields & Cases

4.1 Application Fields

• Oil & Gas: Refineries, petrochemical plants, offshore platforms, pipeline monitoring
• Power Generation: Combined-cycle power plants, nuclear power plants, renewable energy systems (solar/wind)
• Chemical Processing: Batch reactors, continuous distillation, polymer production
• Water & Wastewater: Treatment plants, desalination facilities, pumping stations

4.2 Typical Cases

1. Refinery Process Control: A major oil refinery deployed YOKOGAWA CP461-50 S2 in its CENTUM VP DCS to control distillation and cracking units. The module’s redundant design prevented a system shutdown during a power supply failure, saving $1 million in potential production losses.
2. Power Plant Boiler Control: A 800 MW combined-cycle power plant used YOKOGAWA CP461-50 S2 to manage boiler combustion and turbine speed control. The module’s fast scan time (10 ms) enabled precise regulation of steam pressure, increasing plant efficiency by 3%.
3. Chemical Batch Reactor Control: A specialty chemical manufacturer integrated YOKOGAWA CP461-50 S2 into its batch process control system. The module’s compatibility with OPC UA allowed real-time data sharing with a cloud-based MES, reducing batch cycle time by 15%.

5. Competitor Comparison

6. Selection Suggestions & Precautions

6.1 Selection Suggestions

1. System Scale Matching: YOKOGAWA CP461-50 S2 is ideal for large-scale DCS systems (≥1,000 I/O points); for smaller applications (≤500 I/O points), select Yokogawa CP451-50 S2 (cost-optimized CPU module).
2. Redundancy Requirements: Choose 1:1 hot standby configuration for safety-critical processes (e.g., refineries, nuclear power plants); single CPU configuration suffices for non-critical applications (e.g., water treatment).
3. Communication Needs: Verify compatibility with field protocols (e.g., FOUNDATION Fieldbus, HART) and third-party systems (e.g., Modbus TCP/IP) before installation.

6.2 Precautions

1. Installation Guidelines: Mount YOKOGAWA CP461-50 S2 in a ventilated control cabinet (temperature ≤55°C) to prevent overheating; use redundant power supplies to ensure uninterrupted operation.
2. Configuration & Calibration: Use Yokogawa CENTUM VP Engineering Environment (CEE) for CPU configuration; perform loop tuning and I/O calibration after installation to optimize control performance.
3. Maintenance Checks: Inspect communication cables and power connections quarterly; back up program and configuration data to flash memory or external storage to prevent data loss.
4. Cybersecurity Measures: Enable firewalls and access control lists (ACLs) on YOKOGAWA CP461-50 S2’s Ethernet ports; update firmware regularly to patch security vulnerabilities.

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