The Yokogawa AFV10D-S41451 Duplexed Field Control Unit is a highly reliable and advanced control component designed for critical industrial automation systems. As part of Yokogawa’s CENTUM VP distributed control system (DCS) family, this duplexed unit is engineered for fault-tolerant operation, ensuring continuous plant availability and robust process control even in the event of hardware failures.

The AFV10D-S41451 integrates seamlessly into plant-wide automation environments, supporting duplex (redundant) configurations that provide high availability, operational continuity, and minimized downtime. With a modular architecture, this unit supports a wide range of control strategies, offering flexibility, scalability, and long-term stability. It is especially suited for industries requiring stringent reliability standards, such as oil and gas, petrochemicals, power generation, and pharmaceuticals.

Product Specifications

Product Applications

The AFV10D-S41451 Duplexed Field Control Unit is widely applied across industries that demand high system availability and precise process control:

• Oil & Gas: Supervising critical refining and production processes with redundant architecture to prevent unplanned shutdowns.

• Power Generation: Maintaining continuous and stable control of turbines, boilers, and auxiliary systems.

• Petrochemicals: Enabling safe and reliable process automation in high-volume and hazardous environments.

• Pharmaceutical Manufacturing: Ensuring compliance with strict regulatory standards through accurate and uninterrupted control.

• Water & Wastewater Treatment: Managing continuous operations for pumping stations, filtration systems, and chemical dosing.

• Metals & Mining: Providing robust automation for heavy-duty process environments where downtime is costly.

Product Advantages

• High Availability: Duplexed configuration ensures system operation continues seamlessly even during component failures.

• Scalability: Designed to expand with additional modules and I/O interfaces as plant requirements grow.

• Seamless Integration: Native compatibility with Yokogawa’s CENTUM VP system and Vnet/IP networking.

• Advanced Reliability: Built with industrial-grade components to operate under demanding environmental conditions.

• Efficient Maintenance: Hot-swappable modules and duplexed design simplify maintenance without interrupting operations.

• Proven Performance: Backed by Yokogawa’s decades of expertise in control system engineering and field experience.

FAQ

1. How does the AFV10D-S41451 ensure redundancy in field control operations?

   The AFV10D-S41451 adopts a duplexed CPU design, where two processors run in parallel. If one CPU fails, the second immediately takes over to maintain continuous control without interruption.

2. What communication protocols are supported for system integration?

   It primarily uses Vnet/IP as its high-speed control network and supports Ethernet connectivity. Through additional I/O modules, it can interface with FOUNDATION™ Fieldbus, HART, and other industrial protocols.

3. Can the unit handle both analog and digital signals simultaneously?

   Yes, the controller is designed to process mixed I/O types, managing analog measurements and digital control signals at the same time.

4. How does the system perform fault detection?

   It continuously runs real-time diagnostics and performs cross-checks between CPUs. Any detected fault in one path will cause an automatic switchover to the healthy CPU without affecting operations.

5. What diagnostic functions are available for operators?

   Operators can access module health monitoring, redundancy status, error logs, and predictive alerts via the CENTUM VP system, providing proactive fault management.

6. Is it backward compatible with previous Yokogawa CENTUM systems?

   Yes, the AFV10D-S41451 is compatible with legacy CENTUM CS3000 systems, ensuring smooth system migration. Optimal performance is achieved when integrated with CENTUM VP.

7. What are the advantages of using Vnet/IP with this controller?

   Vnet/IP provides a real-time deterministic network with speeds up to 1 Gbps. It reduces communication latency and supports redundant networking for higher system availability.

8. What type of power redundancy is supported?

   It features dual redundant 24 VDC power supply inputs, so if one power source fails, the other maintains uninterrupted operation.

9. Can firmware upgrades be performed without halting operations?

   Yes, thanks to the duplex configuration, firmware can be updated online. One CPU can be updated while the other continues control, avoiding process downtime.

10. How do the dual CPUs maintain synchronization?

    The CPUs operate in lockstep mode, exchanging process states via a high-speed internal bus. This ensures both units remain fully synchronized and ready for instant switchover.