描述
ABB TU890 3BSC690075R1是一款模块终端单元（MTU），专门设计用于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194mm×58.5mm×64mm
重量：约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。
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。
地址生成：通过将输出位置信号转移到下一个MTU，为I/O模块生成正确的地址，确保每个模块在总线上都有唯一的地址。
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。
安装方式：设计用于安装在标准DIN导轨上。
接线规格：电源连接器适用线径为0.25-2.5 mm²(24-14 AWG)；信号/现场接线适用实心0.2-4 mm²或绞合0.2-2.5 mm²（24-12 AWG）的导线。
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：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：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 module terminal unit(MTU)specifically designed for use with the ABB S800 I/O system.Product details are as follows:
Basic Information
Brand:ABB
Model:TU890
Product Number:3BSC690075R1
Type:Module Terminal Unit
Dimensions:Approximately 194mm×58.5mm×64mm
Weight:Approximately 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.
Module Bus Distribution:Component of the ModuleBus,the internal communication bus of the S800 I/O system,distributes the ModuleBus to installed I/O modules and the next MTU in the rack.Address Generation:Generates the correct address for the I/O module by shifting the output position signal to the next MTU,ensuring each module has a unique address on the bus.
Mechanical Keying:Mechanical keying prevents insertion of the wrong I/O module,ensuring correct configuration and preventing damage.
Mounting:Designed for mounting on a standard DIN rail.
Wiring Specifications:The power connector accepts wire sizes from 0.25 to 2.5 mm²(24 to 14 AWG);signal/field wiring accepts solid 0.2 to 4 mm²or stranded 0.2 to 2.5 mm²(24 to 12 AWG).
Rated Voltage/Current:50 V and 2 A per channel,but actual limits depend on the specific I/O module used and its certified applications.
Applications:Process Automation:Industries such as oil and gas,chemicals,pulp and paper,mining,metals,and power generation.
Discrete Manufacturing:Industries requiring robust and reliable I/O solutions.Hazardous Area Applications:Due to its inherent safety features,it can be used in hazardous areas.
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