Overview
Yokogawa AFV30S-A41252 Field Control Unit
Configured for real-time field control processing in the Yokogawa CENTUM VP system, the Yokogawa AFV30S-A41252 (AFV30S Field Control Unit) provides direct hardware execution for Vnet/IP communication, FIO signal processing, and redundant controller operation.
Suffix Breakdown & Model Matrix
The AFV30S-A41252 belongs to the Yokogawa AFV30S Field Control Unit series. The configuration identifies a standard FCU designed for CENTUM VP systems with CP471 processor support, dual-redundant Vnet/IP communication, and 220-240 VAC power supply.
| Model Element | Specification |
|---|---|
| Series | AFV30S Field Control Unit |
| Processor Compatibility | CP471 standard type |
| Communication Configuration | Dual-redundant Vnet/IP |
| Power Supply Code | 2: 220-240 VAC |
| Mounting Type | 19-inch rack mountable |
| System Platform | Yokogawa CENTUM VP |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | Yokogawa AFV30S-A41252 |
| Brand | Yokogawa Electric Corporation |
| Origin | Japan |
| Weight | Approx. 7.0 kg |
| Dimensions | 19-inch rack mountable FCU housing |
| System Function | Field Control Unit for FIO processing and Vnet/IP communication |
| Main Memory Protection | Battery-backed memory protection during power failure |
| Battery Backup Time | Maximum 72 hours |
| Battery Recharge Time | Minimum 48 hours |
| Vnet/IP Interface | Dual-redundant interface |
| HKU Interface | Optional HKU interface for cabinet monitoring and fault contact output |
| Maximum Node Units | Maximum 13 ESB Bus Node Units and Optical ESB Bus Node Units |
| Power Supply Modules | Two PW481, PW482, or PW484 modules for dual-redundant configuration |
| Processor Modules | Two CP471 or CP461 modules for dual-redundant configuration |
| I/O Modules | Maximum 8 modules |
| Input/Output Architecture | FIO based field control architecture |
Yokogawa DCS Communication and Process Control Features
The AFV30S-A41252 operates as a CENTUM VP Field Control Unit and manages communication between field I/O modules and higher-level control stations. Furthermore, it supports dual-redundant Vnet/IP communication to maintain continuous system data exchange between control nodes.
The unit supports Yokogawa DCS process interfaces, including FOUNDATION Fieldbus and Profibus PA connectivity through compatible field devices and interface modules. In addition, the architecture supports channel-to-channel isolation requirements when used with appropriate I/O modules.
The FCU design provides battery-backed main memory protection during power interruption. Therefore, configuration data and control information remain preserved within the specified backup period.
Frequently Asked Questions
Q: Does the AFV30S-A41252 support redundant processor operation?
A: Yes. The FCU supports a dual-redundant processor configuration by installing two identical CP471 or CP461 processor modules with matching model codes.
Q: How many ESB Bus Node Units can connect to the AFV30S-A41252?
A: The FCU supports a maximum of 13 connected ESB Bus Node Units and Optical ESB Bus Node Units combined.
Q: What power supply configuration does the AFV30S-A41252 use?
A: This model uses a 220-240 VAC power supply configuration and supports dual-redundant power supply installation with compatible Yokogawa PW series modules.
Field Installation Guidelines
- Install the AFV30S-A41252 in a compatible 19-inch rack cabinet with proper mechanical support.
- Verify Vnet/IP communication wiring before system commissioning and confirm redundant network paths.
- Separate communication cables from high-voltage power wiring to reduce electrical interference.
- Connect cabinet grounding according to Yokogawa installation requirements and maintain proper shield termination for communication cables.
- Confirm power supply module installation before energizing the FCU.
- Check processor module matching when configuring redundant CPU operation.
- Use approved Yokogawa cables and accessories for ESB Bus and Optical ESB Bus connections.
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