描述
ABB AI845是S800系列的8通道模拟量输入模块，专为工业自动化系统设计，具有12位分辨率、多输入范围兼容性和HART通信功能，适用于电力、化工、制药等领域的高精度信号采集与控制系统。
一、基础信息与产品定位
1.基本参数
完整型号：AI845（物料编码3BSE023675R1）
品牌/制造商：ABB（全球领先的工业自动化技术企业）
产品类型：模拟量输入模块（I/O模块）
系列归属：S800 I/O系列，属于ABB Advant 800xA过程控制系统
原产地：瑞士/欧美12
2.物理特性
尺寸规格：净深102毫米，净高119毫米，净宽45毫米
重量：0.2公斤
结构形式：模块式设计，便于安装和集成
安装方式：S800系列导轨安装
防护等级：IP65，适用于工业环境3
二、技术规格与功能特点
1.核心功能
通道数量：8个通道，可处理电压或电流输入
输入范围：
电流：0…20 mA、4…20 mA
电压：0…5 V、1…5 V dc
分辨率：12位，提供高精度信号测量
输入类型：单端单极输入
隔离特性：1组8通道与地隔离，提高系统抗干扰能力2
2.电气特性
工作电压：AC120V/AC230V
输入电阻：
电压输入：>10 M ohm
电流输入：250 ohm
过压保护：可承受至少11 V dc的过压或欠压
工作温度范围：-30℃至+70℃
湿度范围：5%至95%RH（无冷凝）34
3.技术优势
灵活配置：当使用MTU TU844或TU845时，每个通道可单独配置为电压或电流输入；使用其他MTU时，所有通道统一为电压或电流输入
HART通信：支持HART直通通信，可与HART兼容变送器直接通信
电源分配：向每个通道分配外部HART兼容变送器电源，简化2线或3线变送器的连接
电流限制：每通道限流发射器电源，防止过载
诊断功能：先进的车载诊断，便于故障排查
冗余支持：适用于单一或冗余应用，提高系统可靠性
The ABB AI845 is an 8-channel analog input module in the S800 series,designed specifically for industrial automation systems.It features 12-bit resolution,multi-input range compatibility,and HART communication capabilities,making it suitable for high-precision signal acquisition and control systems in fields such as power,chemical,and pharmaceutical industries.
I.Basic Information and Product Positioning
1.Basic Parameters
Model Number:AI845(Material Code 3BSE023675R1)
Brand/Manufacturer:ABB(A leading global industrial automation technology company)
Product Type:Analog Input Module(I/O Module)
Series:S800 I/O Series,belonging to ABB Advant 800xA process control system
Country of Origin:Switzerland/Europe/America
2.Physical Characteristics
Dimensions:Net depth 102 mm,net height 119 mm,net width 45 mm
Weight:0.2 kg
Structure:Modular design,easy to install and integrate
Installation Method:S800 series DIN rail mounting
Protection Rating:IP65,suitable for industrial environments
II.Technical Specifications and Functional Features
1.Core Functions
Number of Channels:8 channels,capable of handling voltage or current input
Input Range:
Current:0…20 mA,4…20 mA
Voltage:0…5 V,1…5 V DC
Resolution:12-bit,providing high-precision signal measurement
Input Type:Single-ended unipolar input
Isolation Features:8 channels isolated from ground,improving system anti-interference capability2
2.Electrical Characteristics
Operating Voltage:AC120V/AC230V
Input Resistance:
Voltage Input:>10 M ohms
Current Input:250 ohms
Overvoltage Protection:Withstands overvoltage or undervoltage of at least 11 V DC
Operating Temperature Range:-30℃to+70℃
Humidity Range:5%to 95%RH(non-condensing)34
3.Technical Advantages
Flexible Configuration:When using MTU With TU844 or TU845,each channel can be individually configured as a voltage or current input;with other MTUs,all channels are uniformly configured as either voltage or current inputs.
HART Communication:Supports HART pass-through communication,allowing direct communication with HART-compatible transmitters.
Power Distribution:Distributes external HART-compatible transmitter power to each channel,simplifying the connection of 2-wire or 3-wire transmitters.
Current Limiting:Limits transmitter power for each channel to prevent overload.
Diagnostic Functions:Advanced on-board diagnostics for easy troubleshooting.
Redundancy Support:Suitable for single or redundant applications,improving system reliability.
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