描述
ABB TU839是用于ABB S800 I/O系统的扩展型模块终端单元（MTU），订货号为3BSE046966R1。以下是其产品详情：
基本信息
重量：约0.3kg。
技术参数
通道数：8。
兼容模块：可与DI820、DI821、DI825等I/O模块配合使用。
功能特点
信号连接与分配：作为无源单元，可将现场接线连接到I/O模块，还包含ModuleBus的一部分，能将ModuleBus分发到I/O模块端，然后分发到下一个MTU。
保险设计：带有保险装置，为连接的设备提供过载等保护功能，适用于DI820、DI821等模块。
安装与维护方便：采用合适的安装方式，便于安装和拆卸，也便于维护。
The ABB TU839 is an expansion module terminal unit(MTU)for the ABB S800 I/O system,with the order number 3BSE046966R1.The following are product details:
Basic Information
Weight:Approximately 0.3 kg.
Technical Parameters
Number of channels:8.
Compatible modules:Compatible with I/O modules such as the DI820,DI821,and DI825.
Features
Signal Connection and Distribution:As a passive unit,it connects field wiring to the I/O module and also includes a portion of the ModuleBus,distributing the ModuleBus to the I/O module and then to the next MTU.
Fuse Design:It includes a fuse to provide overload and other protection for connected equipment.It is compatible with modules such as the DI820 and DI821.
Easy Installation and Maintenance:The appropriate mounting method facilitates installation and removal,as well as maintenance.
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