描述
ABB TU844 3BSE021445R1是一款冗余模块终端单元（MTU），主要用于为工业应用提供冗余输入/输出（I/O）解决方案。以下是其产品详情：
基本信息
型号：TU844
订货号：3BSE021445R1
产品类型：冗余模块终端单元
尺寸：131mm（宽）×186.5mm（高）×64mm（深）
重量：约0.6kg
安装方式：可安装在标准DIN导轨上
技术参数
额定电压：50V
通道数：8个
最大电流：每I/O通道最大电流为2A，过程连接最大电流为5A。
线径要求：实心线0.2-4mm²，绞线0.2-2.5mm²。
介电测试电压：500V AC。
工作温度范围：0℃至+55℃
存储温度范围：-40℃至+70℃
相对湿度：5%至95%，非冷凝
防护等级：IP20
功能特点
冗余I/O通道：具有8个冗余I/O通道，每个通道有两个独立的输入和一个输出，可在主模块发生故障时为I/O信号提供备份路径，确保关键系统的连续运行。
兼容多种模块：可与AI845、AI880、AI880A和DP840等I/O模块配合使用。
故障检测与隔离：能够检测并隔离故障，防止系统范围的故障，提高系统的可靠性和稳定性。
热插拔功能：支持模块热插拔，便于维护，无需系统停机，减少了维护时间和成本。
机械键配置：通过四个机械键（每个I/O模块两个）为不同类型的I/O模块配置MTU，总共有36种不同的配置，可防止插入错误的I/O模块。
The ABB TU844 3BSE021445R1 is a redundant modular terminal unit(MTU)designed to provide redundant input/output(I/O)solutions for industrial applications.Product details are as follows:
Basic Information
Model:TU844
Order Number:3BSE021445R1
Product Type:Redundant Modular Terminal Unit
Dimensions:131mm(W)×186.5mm(H)×64mm(D)
Weight:Approximately 0.6kg
Mounting Method:Mountable on a standard DIN rail
Technical Parameters
Rated Voltage:50V
Number of Channels:8
Maximum Current:2A per I/O channel,5A for process connections.
Wire Size Requirements:Solid wire 0.2-4mm²,stranded wire 0.2-2.5mm².
Dielectric Test Voltage:500V AC
Operating Temperature Range:0°C to+55°C
Storage Temperature Range:-40°C to+70°C
Relative Humidity:5%to 95%,non-condensing
Ingress Protection:IP20
Features
Redundant I/O Channels:8 redundant I/O channels,each with two independent inputs and one output,provide a backup path for I/O signals in the event of a primary module failure,ensuring continuous operation of critical systems.
Compatible with a variety of modules:Compatible with I/O modules such as the AI845,AI880,AI880A,and DP840.
Fault Detection and Isolation:Detects and isolates faults,preventing system-wide failures and improving system reliability and stability.
Hot-Swap Capability:Module hot-swappability facilitates maintenance without system downtime,reducing maintenance time and costs.Mechanical key configuration:Configure the MTU for different I/O module types through four mechanical keys(two per I/O module),for a total of 36 different configurations,preventing insertion of the wrong I/O module.
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