描述
ABB AI845是ABB公司推出的一款高性能模拟输入模块，广泛应用于工业自动化控制系统中，主要用于采集和处理来自现场的模拟信号（如电压、电流、温度等），并将其转换为数字信号供控制系统使用。以下是其核心功能与技术特点的综合概述：
一、产品概述
AI845属于ABB S800系列I/O模块，支持单一或冗余操作模式，适用于过程控制、数据采集、设备监控等场景。其核心功能包括信号转换、过压保护、HART通信及自诊断，是工业自动化系统中的关键组件。
二、技术参数
通道与输入类型
-通道数量：8个独立模拟输入通道
-支持信号类型：0…20 mA、4…20 mA、0…5 V、1…5 V（单端单极性输入），可灵活配置为电压或电流输入。
分辨率与精度
-分辨率：12位（部分型号支持16位）
-测量精度：±0.1%FS（满量程），适用于高精度工业应用。
隔离与保护
-通道隔离：1组8通道对地隔离，输入电压/电流可承受至少11 V DC的过压或欠压。
-电流限制：每个通道限流至30 mA，防止过载或短路损坏。
三、功能特点
HART协议支持
-集成HART兼容发射器电源，支持2线或3线变送器供电，并监控发射器功率，确保通信稳定性。
自诊断与监测
-内置车载诊断功能，可实时检测模块状态并触发报警（如温度异常、通道故障），提升系统可靠性。
兼容性与扩展
-支持模块终端单元（MTU，如TU844/TU845）配置，实现不同输入模式切换；
-兼容ABB S800系列控制器及Profinet、Modbus等工业协议。
四、应用领域
工业过程控制
-温度、压力、流量等参数监测，适用于化工、石油、电力等行业。
智能制造
-机器人控制系统中传感器信号采集，保障生产线高效运行。
能源管理
-发电机励磁控制、配电系统电压监测等场景。
AI845 3BSE023675R1
ABB AI845 is a high-performance analog input module launched by ABB.It is widely used in industrial automation control systems.It is mainly used to collect and process analog signals(such as voltage,current,temperature,etc.)from the field and convert them into digital signals for use by the control system.The following is a comprehensive overview of its core functions and technical features:
I.Product Overview
AI845 belongs to the ABB S800 series I/O module,supports single or redundant operation mode,and is suitable for process control,data acquisition,equipment monitoring and other scenarios.Its core functions include signal conversion,overvoltage protection,HART communication and self-diagnosis,and it is a key component in industrial automation systems.
II.Technical Parameters
Channels and Input Types
-Number of channels:8 independent analog input channels
-Supported signal types:0…20 mA,4…20 mA,0…5 V,1…5 V(single-ended unipolar input),which can be flexibly configured as voltage or current input.
Resolution and Accuracy
-Resolution:12 bits(some models support 16 bits)
-Measurement accuracy:±0.1%FS(full scale),suitable for high-precision industrial applications.
Isolation and Protection
-Channel isolation:1 group of 8 channels are isolated from the ground,and the input voltage/current can withstand overvoltage or undervoltage of at least 11 V DC.
-Current Limitation:Each channel is limited to 30 mA to prevent overload or short circuit damage.
III.Functional Features
HART Protocol Support
-Integrated HART-compatible transmitter power supply,supports 2-wire or 3-wire transmitter power supply,and monitors transmitter power to ensure communication stability.
Self-diagnosis and Monitoring
-Built-in on-board diagnostic function,which can detect module status in real time and trigger alarms(such as abnormal temperature,channel failure),improving system reliability.
Compatibility and expansion
-Supports module terminal unit(MTU,such as TU844/TU845)configuration to achieve switching between different input modes;
-Compatible with ABB S800 series controllers and industrial protocols such as Profinet and Modbus.
IV.Application areas
Industrial process control
-Temperature,pressure,flow and other parameter monitoring,suitable for chemical,petroleum,power and other industries.
Intelligent manufacturing
-Sensor signal acquisition in robot control systems to ensure efficient operation of production lines.
Energy management
-Generator excitation control,distribution system voltage monitoring and other scenarios.
