产品概述
FT-BC-209光电隔离型中继器、兼容RS-422、RS-485标准,能够延长RS-422/RS-485总线网络的通信距离,增加RS-422/RS-485网络设备的个数,内置的光电隔离器及DC/DC隔离模块,能够提供高达2500Vrms的隔离电压,接口两端带有快速的瞬态电压抑制保护器,
此保护器被设计用来保护RS-422/RS-485接口,采用当今先进的TVS(TRANSIENT VOLTAGE SUPPRESSOR)瞬态电压抑制器,正常情况下TVS管呈高阻状态,当TVS管两端经受瞬间的高能量冲击时,它能以极高的速度将其两端的阻抗降低,吸收一个大电流,从而把其两端的电压钳制在一个预定的数值上,保护后面的电路元件不因瞬态高压冲击而损坏。此保护器可以有效地抑制闪电(LIGHTNING)和ESD,提供每线600W的雷击浪涌保护功率,以及各种原因在线路上产生的浪涌电压和瞬态过压,并且极小的极间电容保证了RS-422/RS-485接口的高速传输。RS-422、RS-485输入端通过DB9母头的连接器连接。RS-422、RS-485输出端通过DB9公头的连接器连接。转换器内部带有零延时自动收发转换, 独有的I/O电路自动控制数据流方向,而不需任何握手信号( 如RTS、DTR等 ),无需跳线设置实现全双工(RS-422) 、半双工(RS-485)模式转换,即插即用。
FT-209光电隔离型接口转换器可以为点到点、点到多点的通信提供可靠的连接,点到多点每台中继器可允许连接128个RS-422或RS-485接口设备,数据通讯速率300-115.2KBPS,带有电源指示灯及数据流量指示灯可指示故障情况。
连接器和信号
尺寸图
注:本产品有全国产化型号可选
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Performance figures, data and any illustrative material provided in this data sheet are typical and must be specifically confirmed in writing by F-tone Networks before they become applicable to any particular order or contract. In accordance with the F-tone Networks policy of continuous improvement specifications may change withoFT notice.
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