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关键字：abb阀门定位器 http://www.abb-positioner.com/ abb阀门定位器有一个独立的24VDC信号被加至关闭模块，通过此信号连接微处理器至IP模块。当24V DC信号中断，I/P模块根据其机械结构执行相关的安全功能。如果是双作用执行机构，第2路输出OUT2相应地增压；当定位器OUT1减压，阀门被驱动至安全位置。 数字式abb阀门定位器现场常见的分为三种，那下边就为大家介绍了这三种模式： 1、数字不通信式定位器输入4~20mA电流信号输入，驱动电子模块并控制输出。 2、HART式与数字不通信式定位器相同，但它能够在用于传输模拟信号的导线上进行双向数字通信。 3、总线式abb阀门定位器接受数字信号并使用数字式电子线路配合机械部件来定位阀门，全数字控制信号取代模拟控制信号，可进行双向数字通信。把软件命令植入定位器存储模块的能力代表着数字式与模拟式I/P定位器层次之间的真正区别。德科蒙过程控制(武汉)有限公司座机:027-88062221传真:027-88068180邮箱: sales@whdkm.com原文出处：http://www.abb-positioner.com/a/xwdt/147.htmlABSolute;top:0;border:0;width:undefinedpx;height:undefinedpx;" SANdbox="allow-forms allow-popUPS allow-popups-to-escape-sandbox allow-same-origin allow-scripts allow-top-navigation-by-user-activation" frameborder="0" src="https://googleads.g.doubleclick.net/pagead/ads?guci=2.2.0.0.2.2.0.0&client=ca-pub-6745515041074118&ouTPUt=html&adk=1812271804&adf=3279755396&plat=1%3A32776%2C2%3A32776%2C8%3A134217728%2C9%3A134250504%2C10%3A32%2C11%3A32%2C16%3A8388608%2C17%3A32%2C24%3A32%2C25%3A32%2C30%3A1081344%2C32%3A32%2C40%3A32&format=0x0&url=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fact%3D1&ea=0&flash=32.0.0&pra=5&wgl=1&tt_state=W3siaXNzdWVyT3JpZ2luIjoiaHR0cHM6Ly9hZHNlcnZpY2UuZ29vZ2xlLmNvbSISInN0YXRlIjowfSx7Imlzc3Vlck9yaWdpbiI6Imh0dHBzOi8vYXR0ZXN0YXRpb24uYW5kcm9pZC5jb20iLCJzdGF0ZSI6MH1d&dt=1605084299549&bpp=15&bdt=72&idt=170&shv=r20201104&cbv=r20190131&ptt=9&saldr=aa&cookie=ID%3D5fb7eae809183df8-22fd78660ec40024%3AT%3D1602660717%3ART%3D1602660717%3AS%3DALNI_MYMQQp2TnvCbvJQtTRQsdNX_-71Bg&nras=1&correlator=7614356680081&frm=23&ife=1&pv=2&ga_vid=1815089379.1605084300&ga_sid=1605084300&ga_hid=1531069999&ga_fc=0&iag=3&icsg=138&nhd=1&dssz=5&mdo=0&mso=0&u_tz=480&u_his=10&u_java=0&u_h=1080&u_w=1920&u_ah=1030&u_aw=1920&u_cd=24&u_nplug=17&u_nmime=34&adx=-12245933&ady=-12245933&biw=1203&bih=586&isw=730&ish=360&ifk=2699508910&scr_x=0&scr_y=0&eid=42530671&oid=3&pvsid=2916551645154102&pem=16&ref=https%3A%2F%2Fwww.bizrobot.com%2Fcompany_bloginfo.php%3Fadd_suc%3D1&rx=0&eae=2&fc=1664&brdim=0%2C0%2C0%2C0%2C1920%2C0%2C1920%2C1030%2C730%2C360&vis=1&rsz=%7C%7Cs%7C&abl=NS&fu=8204&bc=31&ifi=0&uci=0.tdfoj71skonw&fsb=1&dtd=208" marginwidth="0" marginheight="0" vspace="0" hspace="0" allowtransparency="true" scrolling="no" allowfullscreen="true" data-google-container-id="0.tdfoj71skonw" data-load-complete="true"> |