描述
ABB TU890 3BSC690075R1是模块终端单元(MTU)，专为ABB S800 I/O系统设计，作为工业自动化和过程控制系统中的关键组件，提供现场布线连接、模块总线分配和地址生成功能11。
1.产品概述与核心功能
基本定位：TU890 3BSC690075R1是无源装置，不包含任何用于处理信号的有源电子元件，主要作为现场布线的物理连接点和I/O模块的基座
主要功能：
现场接线连接：提供用于连接传感器、执行器等现场设备的端子，支持实心0.2-4mm²或绞合0.2-2.5mm²导线
模块总线分配：作为S800 I/O系统内部通信总线ModuleBus的组成部分，将总线分配到安装的I/O模块和下一个MTU
地址生成：通过将输出位置信号转移到下一个MTU，为I/O模块生成正确地址，确保每个模块在总线上有唯一标识
电源分配：为有源I/O模块分配电源和通信信号，支持每通道50V和2A的典型工作条件
设计特点：紧凑型设计，专为节省控制柜空间而优化，适用于各种工业控制柜安装11
2.技术规格与物理参数
电气特性：
电源连接器：0.25-2.5mm²(24-14 AWG)
信号/现场接线：实心0.2-4mm²或绞合0.2-2.5mm²(24-12 AWG)
最大额定电压/电流：每通道50V和2A，实际限制取决于所用I/O模块及其认证应用
物理特性：
安装方式：DIN导轨安装，带有锁定和接地的闩锁装置
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
端子类型：现场信号和过程电压通常使用灰色端子
环境适应性：
工作温度：标准工业环境适用范围
防护等级：适合工业控制柜内安装，IP20防护等级
The ABB TU890 3BSC690075R1 is a Modular Terminal Unit(MTU)designed specifically for ABB S800 I/O systems.As a key component in industrial automation and process control systems,it provides field cabling connectivity,module bus allocation,and address generation functions.<sup>11</sup>
1.Product Overview and Core Functions
Basic Positioning:The TU890 3BSC690075R1 is a passive device,containing no active electronic components for signal processing.It primarily serves as a physical connection point for field wiring and a base for I/O modules.
Main Functions:
Field Wiring Connection:Provides terminals for connecting field devices such as sensors and actuators,supporting solid 0.2-4mm²or stranded 0.2-2.5mm²wires.
Module Bus Assignment:As part of the S800 I/O system’s internal communication bus,ModuleBus,it assigns the bus to installed I/O modules and the next MTU.
Address Generation:Generates the correct address for each I/O module by transferring the output position signal to the next MTU,ensuring each module has a unique identifier on the bus.
Power Distribution:Distributes power and communication signals to active I/O modules,supporting typical operating conditions of 50V and 2A per channel.
Design Features:Compact design optimized for saving control cabinet space,suitable for installation in various industrial control cabinets.
2.Technical Specifications and Physical Parameters
Electrical Characteristics:
Power Connectors:0.25-2.5mm²(24-14 AWG)
Signal/Field Wiring:Solid 0.2-4mm²or twisted 0.2-2.5mm²(24-12 AWG)
Maximum Rated Voltage/Current:50V and 2A per channel;actual limitations depend on the I/O module used and its certified application.
Physical Characteristics:
Mounting:DIN rail mounting with locking and grounding latches
Mechanical Keying:Features mechanical keying to prevent incorrect I/O module insertion and ensure correct configuration
Terminal Type:Gray terminals are typically used for field signals and process voltages.
Environmental Adaptability:
Operating Temperature:Suitable for standard industrial environments
Protection Rating:IP20 protection rating,suitable for installation in industrial control cabinets.
ABB Model: GBU72 3BHE055094R0002 Model: 3BHE055094R0002 GBU72 Model: GBU72 Model: 3BHE055094R0002 Model: 3BHE031197R0001 Model: 3BHB030310R0001 Model: 73BHE055094R0002 GBU72 Model: 73BHE055094R0002 Model: GBU72 Model: ABB PCS6000 PRODUCT FAMLIY ABB 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101
