Yokogawa AFV30D-S41151 CENTUM VP Duplexed Field Control Unit

Product Overview

The Yokogawa AFV30D-S41151 serves as the high-availability processing core for the CENTUM VP Distributed Control System (DCS). This Duplexed Field Control Unit (FCU) coordinates real-time data acquisition and complex control logic across the plant network. By integrating fully redundant processor and power supply modules, the AFV30D-S41151 eliminates single points of failure, ensuring continuous process uptime in mission-critical environments. We supply this unit as 100% Brand New and Original factory-sealed hardware.

Part Number Breakdown: AFV30D Series

Yokogawa utilizes a specific alphanumeric code to define the redundancy and power options for the AFV30D line:

Technical Specifications

The AFV30D-S41151 combines significant memory capacity with robust environmental tolerances:

• Main Memory: 128 MB capacity

• Memory Backup: Battery-backed SRAM (Maximum 72 hours data retention)

• Battery Recharge: 48-hour minimum cycle for full charge

• Communication Interface: Dual-redundant Vnet/IP

• Module Capacity: Supports up to 8 I/O modules locally

• Node Scalability: Connects up to 13 Node Units per FCU

• Diagnosis Output: READY Contact (NC, C terminals)

• Operating Temperature: -10°C to +55°C

• Storage Temperature: -40°C to +85°C

• Redundancy: Duplexed Processor and Power Supply modules

Engineering Advantages

The AFV30D-S41151 solves the most demanding industrial control challenges through superior hardware engineering:

• Instantaneous Failover: The dual-redundant processor modules synchronize data in real-time. If the active module detects a fault, the standby processor assumes control within milliseconds, preventing process bumps and keeping control loops stable.

• Persistent State Recovery: An integrated battery backup safeguards the 128 MB main memory for up to 72 hours during total power loss. This ensures the system retains all current process parameters and logic states, allowing for a rapid and safe plant restart.

• Network Hardening: The dual-redundant Vnet/IP interface maintains communication even if one network path sustains physical damage or switch failure. This provides the operator with continuous visibility under all circumstances.

• Extreme Temperature Resilience: Unlike standard commercial electronics, the AFV30D-S41151 operates reliably down to -10°C and handles storage up to +85°C. This robustness allows installation in varying climate conditions without the immediate risk of component degradation.

FAQs

• Does the AFV30D-S41151 include the battery for memory backup?

  Yes, we ship each original unit with the standard backup battery. However, please note that the battery requires a minimum of 48 hours of continuous power to reach full charge after the initial installation.

• Can I expand the I/O capacity beyond the 8 local modules?

  Absolutely. While the FCU chassis holds 8 I/O modules, the AFV30D-S41151 supports up to 13 additional Node Units. This allows you to scale your system to handle hundreds of field points through a single control hub.

• What is the function of the READY contact?

  The READY contact provides a hardware-level diagnostic signal. You can wire this NC (Normally Closed) contact to a master annunciator or safety system to provide immediate notification if the FCU fails its internal health checks or loses power.

• Can this unit replace an older AFV30S (Single) model?

  Yes, you can upgrade from a single to a duplexed unit to improve reliability. However, you must verify your CENTUM VP software license and project configuration to ensure they support the duplexed CPU architecture.