Overview
Suffix Breakdown & Model Matrix
The available model configuration is defined by the official AFV30S ordering structure.
| Code | Description |
|---|---|
| AFV30S | Field Control Unit for FIO, 19-inch rack mount |
| -A | Standard type for CP471 processor |
| -S | Standard type for CP461 processor |
| 3 | Dual-redundant Vnet/IP, single power supply |
| 4 | Dual-redundant Vnet/IP, dual power supply |
| 1 | 100 – 120 VAC power supply |
| 2 | 220 – 240 VAC power supply |
| 4 | 24 VDC power supply |
| 0 | Basic type |
| 1 | ISA Standard G3 option |
| 5 | Basic type without explosion protection |
| 6 | ISA Standard G3 option without explosion protection |
| E | Basic type with explosion protection |
| F | ISA Standard G3 option with explosion protection |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | AFV30S-A41262 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | Approx. 7.0 kg |
| Dimensions | Not specified by the supplied documentation |
| Operating Temp | Not specified by the supplied documentation |
| Power Consumption | Not specified by the supplied documentation |
| Product Type | Field Control Unit |
| System Platform | Yokogawa CENTUM VP |
| Communication Interface | Dual-redundant Vnet/IP |
| Optional Interface | HKU Interface |
| Processor Modules | Dual CP471 or dual CP461 (identical models required) |
| Power Supply Modules | PW481, PW482, or PW484 in dual-redundant configuration |
| I/O Module Capacity | Up to 8 I/O modules |
| Maximum Node Units | 13 ESB Bus and Optical ESB Bus node units combined |
| Memory Backup | Battery-backed main memory |
| Backup Duration | Maximum 72 hours |
| Battery Recharge Time | Minimum 48 hours |
| Power Supply Options | 100 – 120 VAC, 220 – 240 VAC, or 24 VDC |
Channel Isolation and Distributed Process Communication
The AFV30S Field Control Unit exchanges controller data through a dual-redundant Vnet/IP interface and supports distributed field I/O architecture. Redundant processor modules operate as identical controller pairs, while redundant power modules maintain controller operation during a single power supply failure. When the optional HKU interface is installed, cabinet environmental status, HK bus status, optical ESB bus status, and system alarm information can be monitored from the operator interface. Process instrumentation connected through the distributed I/O network typically incorporates channel-to-channel isolation within associated I/O hardware to minimize electrical interference between field signal channels.
Frequently Asked Questions
Q: Can different processor models be installed in the redundant processor slots?
A: No. Redundant operation requires two identical processor modules using the same model code, either dual CP471 or dual CP461.
Q: How long is application memory retained after loss of input power?
A: The battery maintains the main memory for a maximum of 72 hours. A minimum battery recharge period of 48 hours is specified.
Q: What is the maximum distributed node capacity supported by one controller?
A: One Field Control Unit supports up to 13 ESB Bus and Optical ESB Bus node units in total.
Field Installation Guidelines
- Install the controller in a standard 19-inch equipment rack using the specified mounting hardware.
- Verify that the configured input voltage matches the installed power supply module before energizing the cabinet.
- Install redundant processor modules using identical model numbers to enable redundancy.
- Route communication cables separately from high-power AC wiring to reduce electromagnetic interference.
- Connect cable shields according to the plant grounding standard and maintain a single-point shield termination where applicable.
- Confirm Vnet/IP network redundancy and node addressing before commissioning the controller.
- Replace the memory backup battery only with the specified maintenance procedure to prevent unintended memory loss.
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