描述
ABB TU890 3BSC690075R1是一款模块终端单元（MTU），用于ABB S800 I/O系统。以下是其产品详情：
基本信息
品牌：ABB
型号：TU890
产品编号：3BSC690075R1
类型：模块终端单元
尺寸：约17cm×6.5cm×6.4cm
重量：0.3kg
功能特点
无源设计：TU890是一个无源装置，不包含处理信号的有源电子元件，主要为现场布线提供物理连接点，并为有源I/O模块分配电源和通信信号。
连接功能：作为连接现场电缆（来自传感器、执行器等）的“终端点”，提供用于连接现场信号和工艺电源的端子。
模块总线分配：是S800 I/O系统内部通信总线ModuleBus的组成部分，可将ModuleBus分配到安装的I/O模块和机架上的下一个MTU，并为I/O模块生成正确的地址。
机械键控：具有机械键控功能，可防止插入错误的I/O模块，确保正确配置并防止损坏。
安装方便：设计用于安装在标准DIN导轨上，支持双向安装。
技术参数
电源连接器：0.25-2.5 mm²(24-14 AWG)。
信号/现场接线：实心0.2-4 mm²或绞合0.2-2.5 mm²（24-12 AWG）。
最大额定电压/电流：每通道50 V和2 A，但实际限制取决于所使用的特定I/O模块及其认证应用。
应用领域
过程自动化：适用于石油和天然气、化工、纸浆和造纸、采矿、金属、发电等行业。
离散制造业：可用于需要稳健可靠的I/O解决方案的领域。
危险区域应用：由于其固有的安全功能，可用于危险区域。
The ABB TU890 3BSC690075R1 is a modular terminal unit(MTU)for the ABB S800 I/O system.Product details are as follows:
Basic Information
Brand:ABB
Model:TU890
Product Number:3BSC690075R1
Type:Modular Terminal Unit
Dimensions:Approximately 17cm×6.5cm×6.4cm
Weight:0.3kg
Functional Features
Passive Design:The TU890 is a passive device that does not contain active electronic components for signal processing.It primarily provides a physical connection point for field wiring and distributes power and communication signals to active I/O modules.
Connection Function:Serves as a”termination point”for connecting field cables(from sensors,actuators,etc.),providing terminals for connecting field signals and process power.Module Bus Assignment:This component is part of the ModuleBus,the internal communication bus of the S800 I/O system.It assigns the ModuleBus to installed I/O modules and the next MTU on the rack,and generates the correct address for the I/O modules.
Mechanical Keying:A mechanical keying feature prevents incorrect I/O modules from being inserted,ensuring correct configuration and preventing damage.
Easy Installation:Designed to mount on a standard DIN rail and supports bidirectional mounting.
Technical Parameters
Power Connector:0.25-2.5 mm²(24-14 AWG).
Signal/Field Wiring:Solid 0.2-4 mm²or stranded 0.2-2.5 mm²(24-12 AWG).
Maximum Voltage/Current Rating:50 V and 2 A per channel,but actual limits depend on the specific I/O module used and its certified application.Applications
Process Automation:Suitable for industries such as oil and gas,chemicals,pulp and paper,mining,metals,and power generation.
Discrete Manufacturing:Suitable for applications requiring a robust and reliable I/O solution.
Hazardous Area Applications:Suitable for use in hazardous areas due to its inherent safety features.
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