Yokogawa AFV10D-S41251 Duplexed Field Control Unit

The Yokogawa AFV10D-S41251 Duplexed Field Control Unit is designed to meet the stringent requirements of mission-critical industrial process control and safety systems. As a duplexed unit, it features dual CPUs working in parallel to provide redundancy, ensuring the highest system availability and fault tolerance. This design guarantees continuous operation even in the event of a hardware or software failure on one channel.

Built with robust hardware and advanced control algorithms, the AFV10D-S41251 integrates smoothly with Yokogawa’s distributed control systems (DCS) and safety instrumented systems (SIS). Its ability to maintain control and safety functions in harsh environments and demanding applications makes it ideal for industries where uptime and reliability are paramount.

The unit supports real-time diagnostics and self-monitoring, allowing operators to quickly identify and resolve issues without system shutdown. The duplexed architecture not only reduces the risk of unexpected downtime but also facilitates maintenance by enabling hot-swapping and online testing.

Product Specifications

Product Applications

• Industrial Process Control: Suitable for complex process control environments such as chemical, petrochemical, and manufacturing plants, where precise control and high availability are essential.

• Safety Instrumented Systems (SIS): Provides fail-safe control in hazardous environments, ensuring compliance with safety standards and reducing risk of accidents.

• Oil & Gas Industry: Used extensively in upstream, midstream, and downstream operations to maintain operational integrity and safety.

• Power Plants: Controls critical operations including turbine management and boiler safety interlocks.

• Pharmaceutical Manufacturing: Ensures product quality and safety through reliable process control.

• Water Treatment Facilities: Maintains control over complex treatment processes with high reliability.

Product Advantages

• High Reliability Through Duplex Redundancy: Dual CPUs operate simultaneously, with automatic failover ensuring zero downtime in the event of hardware or software faults.

• Seamless Integration: Compatible with Yokogawa’s CENTUM VP and ProSafe-RS platforms for unified control and safety management.

• Robust Build for Harsh Environments: Designed to operate reliably in wide temperature and humidity ranges with IP20 protection.

• Advanced Diagnostics: Built-in self-diagnostics provide early warnings and reduce troubleshooting time, enhancing system uptime.

• Flexible Communication: Supports multiple communication protocols enabling integration with existing plant networks and equipment.

• Ease of Maintenance: Hot-swappable modules and online testing capabilities reduce the need for system shutdown during maintenance.

• Certified Safety Standards: Complies with international standards including SIL2, ensuring suitability for safety-critical applications.

• Compact Design: Rack-mounted, space-efficient unit suitable for control cabinets with limited space.

Frequently Asked Questions (FAQ)

1. What is the primary function of the AFV10D-S41251?

   It acts as a duplexed control unit providing redundant processing for critical industrial control and safety applications.

2. How does duplex redundancy benefit system operation?

   It ensures continuous operation by automatically switching to the backup CPU if the primary fails, minimizing downtime.

3. Can the AFV10D-S41251 be integrated with existing Yokogawa control systems?

   Yes, it is designed to integrate seamlessly with CENTUM VP and ProSafe-RS platforms.

4. What are the power requirements for this unit?

   The unit operates on a 24 V DC power supply.

5. Is the unit suitable for harsh environmental conditions?

   Yes, it operates reliably within a temperature range of -10°C to +55°C and humidity of 5% to 95% (non-condensing).

6. What communication protocols are supported?

   It supports Ethernet and serial communication (RS-232/RS-485).

7. How large and heavy is the unit?

   Dimensions are 207 × 265.9 x 482.6 mm, and it weighs 8 kg.

8. Does the unit comply with any safety certifications?

   Yes, it is certified to CE, UL, and SIL2 standards depending on configuration.

9. Can the unit be maintained without shutting down the system?

   Yes, the design allows for hot-swapping and online diagnostics to minimize downtime during maintenance.

10. What industries typically use the AFV10D-S41251?

    It is widely used in oil and gas, petrochemical, power generation, pharmaceutical, and water treatment industries.