YOKOGAWA FIO System Overview (for Vnet/IP)

Core architecture and components of the system

（1） Overall system architecture

The FIO system adopts a three-level architecture of "FCU+node unit+I/O module", which realizes data transmission through three types of buses: ESB/optical ESB/ER, and supports dual redundancy configuration (Vnet/IP bus, communication bus, and module all support redundancy). The typical configuration is as follows:

Top level: Field Control Unit (FCU), responsible for data processing and issuing control instructions;

Middle level: Node unit, serving as the connection hub between FCU and I/O module, including power module and bus interface module;

Bottom layer: I/O module, responsible for the acquisition and output of on-site signals (analog/digital/communication).

（2） Detailed explanation of core hardware components

1. On site Control Unit (FCU)

Model series, type, structure, form, adaptation, bus, key characteristics

AFV10  (AFV10S/AFV10D) Standard 19 inch rack mounted (single redundant S/double redundant D) ESB bus, ER bus basic control function, supports LFS1500 database, and can connect up to 14 node units after expansion

AFV30  (AFV30S/AFV30D) Advanced 19 inch rack mounted (single/double redundant) ESB bus and optical ESB bus require installation of EC401/EC402 coupling module, supporting LFS1700 database, with a maximum of 13 node units after expansion

AFV40  (AFV40S/AFV40D) Enhanced with Cabinet (Single/Double Redundancy) ESB Bus, Optical ESB Bus Built in EC401/EC402 Module, Maximum 11 Node Units Installed in Single Cabinet, Prohibited for Use in Hazardous Areas

Node units and relay units

Unit type, model, bus type, core function, redundancy support

ESB bus node units ANB10S/ANB10D are connected to the full range of AFV FCUs via the ESB bus, compatible with most I/O modules with single redundancy (S)/dual redundancy (D)

Optical ESB bus node unit ANB11S/ANB11D Optical ESB bus supports long-distance transmission, with built-in optical relay module single redundancy (S)/dual redundancy (D)

The ER bus node units ANR10S/ANR10D are only compatible with AFV10  FCU and support specific I/O module single redundancy (S)/dual redundancy (D)

Optical ESB relay unit ANT10U optical ESB bus extends the transmission distance of optical ESB, supporting chain/star topology and requiring the use of ANT401/ANT411 and other relay modules

Classification and core specifications of I/O modules

I/O modules are divided into 5 categories, supporting various configurations such as isolated/non isolated, explosion-proof/non explosion-proof, etc. The core parameters are as follows:

Module category represents model, channel number, signal type, isolation characteristics, explosion-proof level, temperature range

Analog input module AAI141 16 channel 4-20mA (non isolated) non isolated CSA NI, FM NI 0-60 ℃

Analog output module AAI543 16 channel 4-20mA (isolated) Isolation Type n, Type i 0-60 ℃ (fast response type)

Digital input module ADV151 32 channel 24V DC isolated CSA NI, FM NI 0-60 ℃

Digital output module ADV551 32 channel 24V DC isolation Type n, Type i 0-60 ℃

Communication module ALR111 2-port RS-232C non isolated CSA NI, FM NI 0-50 ℃

Turbomachinery module AGS813 12 channel servo signal isolation -0-50 ℃

Built in isolation barrier module ASI133 8-channel 4-20mA input isolation Type i, FM intrinsic safety 0-60 ℃

（3） Comparison of Bus Communication Specifications

The system supports three types of communication buses: ESB, optical ESB, and ER, with the following differences in core parameters:

Bus type transmission rate transmission medium maximum distance topology structure adaptation FCU redundancy support

ESB bus 128Mbps dedicated cable (YCB301) 10m (EC401) bus type AFV10 /AFV30 /AFV40  supported

Optical ESB bus 128Mbps single-mode fiber (LC interface) 50km (ANT411 relay) bus type/chain/star type AFV30 /AFV40  support

ER bus 10Mbps coaxial cable (YCB141/YCB311) 185m (YCB141) bus type AFV10  supported

Bus connection restrictions (according to FCU and database configuration)

FCU model database configuration ESB/optical ESB node unit upper limit ER node unit upper limit Total node unit upper limit

AFV10 LFS1500 3 3 3

AFV10 LFS1500+LFS1550 9 14 14

AFV30/AFV40 LFS1700 3 - 3

AFV30/AFV40 LFS1700+LFS1750-V1 9 - 9

AFV30/AFV40 LFS1700+LFS1750-V2 13 - 13

Environmental and power specifications

（1） Environmental parameters

Project Standard Scope Extension Options (Partial Modules) Remarks

Working temperature FCU: 0-50 ℃; Node Unit: 0-60 ℃ Node Unit: -20-70 ℃ ER Bus Node Unit - Warm up for 10 minutes to start at 20-0 ℃

Storage temperature -20-60 ℃ -40-85 ℃ Avoid direct sunlight

Relative humidity 5-95% RH (no condensation) 5-95% RH (no condensation) Consistent throughout the entire scene

Temperature change rate working: ± 10 ℃/h; storage: ± 20 ℃/h --

Altitude ≤ 2000m --

Vibration 1-14Hz (0.25mm amplitude); 14-100Hz (2.0m/s ²) - Continuous vibration requirements

Impact transportation: horizontal 49.0m/s ²; Vertical 98.0m/s ² - in packaging state

Corrosion gas ANSI/ISA S71.04 G2 ANSI/ISA S71.04 G3 optional G3 level protection

Static protection contact discharge ≤ 4kV; air discharge ≤ 8kV --