Yokogawa CP401-10 S1 Processor Module – Product Description

Overview

The Yokogawa CP401-10 S1 is a high-performance processor module designed for Field Control Stations (FCS) within CENTUM VP and ProSafe‑RS distributed control systems. It executes real-time process control tasks while coordinating multiple I/O modules across the system. Moreover, its compact, rack-mounted design with dual CPU redundancy ensures uninterrupted operation in mission-critical industrial environments. Therefore, it is widely used in oil & gas, petrochemical, power generation, and water treatment facilities where high reliability is essential.

Technical Specifications

General Information

• Model: CP401‑10 S1

• Type: Processor Module (CPU) for Field Control Stations (FCS)

• Series: Yokogawa CENTUM VP / ProSafe‑RS

• Manufacturer: Yokogawa

• Origin: Japan

• Certification: CE, UL, CSA, ATEX (depending on configuration)

Processor & Memory

• CPU Type: 32-bit industrial-grade RISC processor

• Program Memory: 16 MB flash memory

• Data Memory: 32 MB RAM

• Backup Memory: Non-volatile memory for configuration and historical data

• Execution Speed: Typical scan cycle < 10 ms

I/O & Communication

• System Role: Coordinates multiple I/O modules via ESB or optical ESB bus

• Communication Interfaces: V‑Net (redundant), Ethernet, RS‑232/RS‑485

• Supported Protocols: Modbus TCP/IP, Modbus RTU, proprietary Yokogawa protocols

• Redundancy: Dual CPU redundancy supported

Performance & Reliability

• Control Functions: PID, sequence control, batch control, advanced process algorithms

• Diagnostics: Built-in self-test, error reporting via LEDs, watchdog timer

• Reliability: Continuous 24/7 operation in critical environments

Mechanical

• Mounting: Rack-mounted in FCS backplane

• Dimensions (W × H × D): 130 × 130 × 32 mm

• Weight: 0.35 kg

• Cooling: Natural convection (no fan)

• Protection: IP20

Environmental

• Operating Temperature: 0 °C to +55 °C

• Storage Temperature: −20 °C to +70 °C

• Relative Humidity: 5–95% non-condensing

FAQ

Q1: What is the main function of the CP401-10 S1 module?
It serves as the central processor for Field Control Stations, executing logic and controlling I/O modules.

Q2: Does the module support redundancy?
Yes, it supports dual CPU redundancy for fault-tolerant, uninterrupted operation.

Q3: Which communication protocols are supported?
V‑Net, Ethernet, RS‑232/RS‑485, Modbus TCP/IP, Modbus RTU, and Yokogawa proprietary protocols.

Q4: Can it handle advanced control functions?
Yes, including PID, sequence control, batch control, and other advanced process algorithms.

Q5: Is it suitable for harsh industrial environments?
Yes, it is designed for continuous 24/7 operation with robust diagnostics and IP20 protection.