Yokogawa AFS40S Field Control Unit

The Yokogawa AFS40S Field Control Unit is one of the most advanced and high-performance control processors within Yokogawa’s CENTUM VP Distributed Control System (DCS) platform. Designed for large-scale and highly complex process automation applications, the AFS40S delivers unparalleled speed, flexibility, and system availability.

With its advanced architecture, high-speed CPU, extensive communication capabilities, and large I/O capacity, the AFS40S is the backbone of many mission-critical industrial control systems. It supports seamless integration with field networks, scalable redundancy, and superior reliability in harsh process environments. The AFS40S ensures optimum operational efficiency and helps users meet rigorous production, safety, and environmental requirements.

Product Specifications

Applications

The Yokogawa AFS40S Field Control Unit is ideally suited for complex, high-availability process automation environments, such as:

• Oil & Gas (Upstream, Midstream, Downstream): Advanced control of drilling, refining, LNG processing, and pipeline systems.

• Chemical and Petrochemical Industries: Sophisticated control of reactors, distillation columns, and other critical processes.

• Power Generation: Boiler control, turbine control, emissions management, and balance of plant in thermal, nuclear, and renewable energy plants.

• Water & Wastewater Treatment: Automation of large municipal and industrial water treatment and distribution systems.

• Pharmaceutical Manufacturing: GMP-compliant batch and continuous process control for highly regulated pharmaceutical environments.

• Pulp & Paper: Management of complex paper machine processes, bleaching lines, and energy systems.

Advantages

• Exceptional Processing Power: Dual multi-core CPUs ensure ultra-fast execution of complex control strategies and algorithms.

• High System Availability: Redundant CPU and power configurations minimize downtime for mission-critical applications.

• Large I/O Capacity: Supports up to 8000 I/O points, making it suitable for even the largest plant installations.

• Advanced Networking: Multi-protocol capability ensures seamless communication with diverse field devices and plant systems.

• Integrated Safety: SIL3-ready design allows for integration into safety-instrumented systems (SIS).

• Extensive Diagnostics: Real-time health monitoring and diagnostics improve maintainability and plant uptime.

• Flexible Scalability: Easily scales from small single-unit installations to large multi-controller architectures.

• Long Lifecycle & Support: Backed by Yokogawa’s long-term support programs to maximize investment protection.

• Energy Efficient: Optimized power usage helps reduce operating costs while maintaining performance.

• Robust Environmental Design: Built for continuous 24/7 operation in challenging industrial environments.

Frequently Asked Questions (FAQ)

1. What is the main function of the Yokogawa AFS40S?

   It acts as a field control processor, executing control logic and managing field I/O in large and complex process automation systems.

2. What is the maximum supported I/O capacity?

   The AFS40S supports up to approximately 8000 I/O points per controller, depending on system configuration.

3. Does the AFS40S support redundant configurations?

   Yes, it supports CPU, communication, and power redundancy for maximum system availability.

4. Which communication protocols are supported?

   Vnet/IP, Modbus TCP/IP, FOUNDATION Fieldbus, PROFIBUS-DP, and OPC UA are supported.

5. Is the AFS40S compatible with Yokogawa’s CENTUM VP system?

   Yes, it is a key component of the CENTUM VP DCS platform.

6. Can the unit be used in hazardous environments?

   Yes, it is ATEX, IECEx, FM, and CSA certified, making it suitable for use in hazardous area applications.

7. What power supply is required?

   It operates with 24 V DC input and supports redundant power supplies.

8. Does the unit provide diagnostic capabilities?

   Yes, it includes advanced diagnostics for system health monitoring and fault detection.

9. What mounting options are available?

   The unit can be rack-mounted or panel-mounted depending on the system design.

10. What is the operating temperature range?

    The AFS40S operates between 0°C and +55°C.