The Yokogawa AFV30S-A41252 Field Control Unit (FCU) is a robust and high-performance controller that forms a key component of the CENTUM VP distributed control system. Unlike standard FCUs, the AFV30S-A41252 is designed to handle demanding industrial processes by combining advanced processing power with reliable communication and modular flexibility.

This FCU supports complex control strategies, large-scale I/O management, and high-speed deterministic communication, making it ideal for mission-critical applications in oil & gas, petrochemical, power generation, and other process-intensive industries. Its scalable architecture, built-in redundancy, and online maintenance capabilities ensure continuous operation and easy integration with both existing and future Yokogawa systems.

Product Specifications

Product Applications

The AFV30S-A41252 is widely deployed in continuous and batch processing industries where performance, reliability, and flexibility are crucial:

• Oil & Gas: Process control for upstream production, LNG facilities, and refining operations.

• Petrochemicals: Advanced control of cracking, reforming, and polymerization units.

• Power Generation: Turbine, boiler, and auxiliary systems in thermal and nuclear power stations.

• Pharmaceutical Manufacturing: Batch automation and regulatory compliance for high-quality production.

• Water & Wastewater: Supervisory control for treatment, pumping, and distribution networks.

• Steel, Cement & Mining: Process optimization in energy-intensive and continuous production environments.

Product Advantages

• Scalable Performance – Supports large I/O configurations with the flexibility to expand as the plant grows.

• Optional Redundancy – CPU, power, and network redundancy improve system availability and reliability.

• Fast Control Response – 50 ms control cycle provides stability for demanding process loops.

• Modular Maintenance – Hot-swappable design enables replacement without downtime.

• Advanced Diagnostics – Real-time monitoring and event logging reduce troubleshooting time.

• Compatibility – Smooth integration with legacy Yokogawa CENTUM CS 3000 systems.

• Cybersecurity Ready – Equipped with secure access, authentication, and encrypted communication.

• Industrial Reliability – Certified for use in hazardous areas with proven long-term performance.

FAQ

1. What is the standard control cycle time of the AFV30S-A41252?

   It operates on a typical 50 ms control cycle, adjustable depending on application needs.

2. Does the unit support CPU redundancy?

   Yes, it can be configured with an optional duplex CPU for fault tolerance.

3. Which communication protocols are supported?

   The unit supports Vnet/IP, Ethernet, FOUNDATION Fieldbus, and HART.

4. Can online configuration changes be applied without halting operations?

   Yes, online modifications are supported for uninterrupted process control.

5. What redundancy features are available for power input?

   It allows dual redundant 24 V DC power supplies for high reliability.

6. Is network redundancy supported?

   Yes, Vnet/IP dual network paths are supported to prevent single-point failures.

7. Can hardware modules be hot-swapped during operation?

   Yes, critical modules such as CPU, communication, and power modules are hot-swappable.

8. What is the maximum I/O capacity for this model?

   It supports up to 1,500 I/O points, with the option to expand through additional units.

9. How are errors detected and managed?

   The FCU includes real-time self-diagnostics and logs errors for quick corrective actions.

10. What cybersecurity functions are included?

    It features encrypted communication, access control, and audit trail capabilities.