Product Overview

The Yokogawa AFV30D-A41252 is a duplexed field control unit. This device belongs to the AFV30D series of field control units. It is designed for use with CP471 systems in distributed control applications.

The unit supports both Vnet/IP and FIO interfaces. Furthermore, it mounts in a standard 19-inch rack. Therefore, this field control unit integrates seamlessly into Yokogawa CENTUM systems.

Ordering Information Breakdown

The AFV30D-A41252 follows a specific ordering code structure. Understanding this code helps verify correct configuration.

• AFV30D: Duplexed Field Control Unit (for Vnet/IP and FIO, 19-inch Rack Mountable).

• A: Standard type (for CP471).

• 4: Dual-redundant Vnet/IP, dual-redundant power supply.

• 1: Always 1.

• 2: 220-240 V AC power supply.

• 5: Basic type with no explosion protection.

• 2: Always 2 (R6.01 or later).

General Specifications

The AFV30D-A41252 offers robust field control capabilities.

• Manufacturer: Yokogawa.

• Product Type: Field Control Unit (Duplexed).

• Weight: Approx. 8.0 kg.

• Mounting: 19-inch rack mounting (M5x8 screws, insulation bush accessory).

Power Specifications

The AFV30D-A41252 consumes moderate power for its class.

• Power Supply: 220-240 V AC (option 2).

• Power Consumption (100-120 V AC): 200 VA.

• Power Consumption (220-240 V AC): 230 VA.

• Power Consumption (24 V DC): 5.5 A.

Redundancy Features

The AFV30D-A41252 provides high availability through redundancy.

• Duplexed Architecture: The AFV30D model indicates duplexed (redundant) operation.

• Dual-Redundant Vnet/IP: The "4" option specifies dual-redundant Vnet/IP networks.

• Dual-Redundant Power Supply: The same option also provides dual-redundant power inputs.

Therefore, the AFV30D-A41252 suits critical control applications where downtime is not acceptable.

Connections and Interfaces

The AFV30D-A41252 offers standard terminal connections for field wiring.

• Power Supply Connection: M4 screw terminal connection.

• Grounding Connection: M4 screw terminal connection.

• READY Contact Output: M4 screw terminal connection.

Network Connection:

• Connect UTP cable (CAT5e or better) to Layer 2 switch.

• Interface supports Vnet/IP protocol.

Weight Comparison

Yokogawa offers both simplex and duplex versions of the field control unit.

• AFV30S (Simplex): Approx. 7.0 kg.

• AFV30D (Duplexed): Approx. 8.0 kg.

Consequently, the duplexed unit adds approximately 1.0 kg for the redundant components.

Key Features

The AFV30D-A41252 offers several advantages for process control.

Duplexed Architecture:
The unit operates in a redundant duplexed configuration. Therefore, if one side fails, the other continues operation without interruption.

Dual-Redundant Vnet/IP:
Two independent Vnet/IP networks provide communication redundancy. Hence, a single network failure does not affect control.

Dual-Redundant Power Supply:
Two power inputs allow connection to separate power sources. Thus, a single power supply failure does not shut down the unit.

19-Inch Rack Mounting:
Mounts in standard 19-inch racks using M5x8 screws. Insulation bushings are included as accessories. Consequently, integration into existing cabinets is straightforward.

CP471 Compatibility:
The "A" option specifies standard type for CP471. Therefore, it works seamlessly with Yokogawa's CP471 field control processor.

Basic Explosion Protection:
The "5" option indicates basic type with no explosion protection. For hazardous area installations, select a different option.

READY Contact Output:
Provides a dry contact output indicating unit readiness. Hence, external systems can monitor the field control unit's status.

Typical Applications

The AFV30D-A41252 suits various distributed control applications.

• Continuous process control in chemical plants.

• Redundant field control in power generation.

• Critical unit operations in oil and gas facilities.

• Large-scale DCS expansions requiring Vnet/IP.

• High-availability control systems requiring duplexed architecture.

Installation Guidelines

Install the AFV30D-A41252 in a standard 19-inch rack. Use M5x8 screws for mounting. Install the included insulation bushings to prevent ground loops.

Connect the 220-240 V AC power supply to the M4 screw terminals. For dual-redundant power, connect two independent power sources. Connect the grounding wire to the M4 grounding terminal.

For network connection, use UTP cable of CAT5e or better. Connect to a Layer 2 switch on the Vnet/IP network. The READY contact output can be wired to an external monitoring system.

What is in the Box

Please inspect all items upon delivery.

• Yokogawa AFV30D-A41252 duplexed field control unit.

• Insulation bushings for rack mounting (accessory).

• Installation instruction manual.

Frequently Asked Questions (FAQ)

1. What is the difference between AFV30S and AFV30D?

The AFV30S is a simplex (non-redundant) field control unit weighing 7.0 kg. The AFV30D-A41252 is a duplexed (redundant) unit weighing 8.0 kg. Therefore, the duplexed version provides higher availability.

2. What power supply voltage does this unit require?

The AFV30D-A41252 with the -2 option requires 220-240 V AC power supply. The power consumption is 230 VA at this voltage.

3. What network protocol does this field control unit use?

The AFV30D-A41252 uses Vnet/IP protocol. It connects via UTP cable (CAT5e or better) to a Layer 2 switch.

4. What does the "4" option in the part number indicate?

The "4" option specifies dual-redundant Vnet/IP networks and dual-redundant power supply. Consequently, the AFV30D-A41252 offers full communication and power redundancy.

5. Is this unit suitable for hazardous area installation?

No. The "5" option indicates basic type with no explosion protection. Therefore, the AFV30D-A41252 is for non-hazardous (safe area) installations only.