描述
ABB TU840 3BSE020846R1是用于ABB S800 I/O系统的模块终端单元（MTU）。以下是其产品详情：
基本信息
品牌：ABB
型号：TU840
订货号：3BSE020846R1
重量：约0.5kg
产地：瑞士
功能特点
冗余配置：用于光学调制解调器的冗余配置，支持冗余I/O。
地址设置：带有用于集群地址（1至7）设置的旋转开关。
防止错插：四个机械键，每个键有六个位置，总共有36种不同的配置，可防止插入错误的模块类型，且可以用螺丝刀改变配置。
安装方便：采用DIN导轨安装，带有用于锁定和接地的DIN导轨锁存装置。
连接对象：TU840作为终止单元，可连接TB840/BT840A至冗余I/O，而TU841则用于连接TB840/BT840A和非冗余I/O。
The ABB TU840 3BSE020846R1 is a module terminal unit(MTU)for the ABB S800 I/O system.Product details are as follows:
Basic Information
Brand:ABB
Model:TU840
Order Number:3BSE020846R1
Weight:Approximately 0.5 kg
Origin:Switzerland
Features
Redundant Configuration:Supports redundant configurations for optical modems and redundant I/O.
Address Setting:Features a rotary switch for setting the cluster address(1 to 7).
Preventing Misinsertion:Four mechanical keys,each with six positions,for a total of 36 different configurations,prevent insertion of the wrong module type.Configurations can be changed with a screwdriver.
Easy Installation:Mounts on a DIN rail with a DIN rail latch for locking and grounding.Connection Objects:TU840,as a termination unit,connects TB840/BT840A to redundant I/O,while TU841 connects TB840/BT840A to non-redundant I/O.
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