Product Description

Overview

The Yokogawa AFV30D-A41252 is a high-reliability Duplexed Field Control Unit (FCU) engineered for the CENTUM VP series. It executes control logic and manages I/O communication in complex industrial processes, providing continuous operation in high-demand environments. The duplexed design ensures mirrored CPU, power, and network components for uninterrupted control.

Model Suffix Explanation

The suffix -A41252 specifies the module’s configuration:

• A: Standard configuration

• 4: Dual-redundant Vnet/IP power supply (220–240 V AC)

• 1 & 2: Fixed internal hardware codes

• 5: Basic software license supporting a set number of function blocks

• 2: Includes LFS1500 control functionality for field stations

Technical Specifications

Key Features

High Availability Duplex Architecture: Two CPUs operate in parallel; if the active unit fails, the standby takes over within milliseconds to maintain process stability.
Real-Time Communication: Vnet/IP ensures low-latency, high-speed data transfer across the control network for thousands of I/O points.
Scalable I/O Expansion: Supports remote node connections via ESB Bus, allowing large-scale system integration.
Robust Design: Engineered for vibration, thermal, and EMI resistance; optional G3 coating protects against corrosive gases.
High-Performance Control: Processes thousands of function blocks per second, enabling precise control of fast-moving variables like flow, pressure, or turbine speed.

Applications

The AFV30D-A41252 is commonly deployed in:

• Oil and Gas main control room systems

• Petrochemical reactors with critical safety requirements

• Power plant automation requiring high-speed, precise regulation

FAQ

Q: Can this unit operate in non-redundant configurations?
A: While possible, the AFV30D is optimized for duplexed operation to maintain maximum uptime.

Q: Is the AFV30D compatible with older CENTUM CS systems?
A: It is primarily designed for CENTUM VP; compatibility with CS systems depends on I/O node and network configuration.

Q: How does it handle harsh environments?
A: With optional G3 coating, it resists corrosive gases and functions reliably in high H₂S or SO₂ areas.