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西门子SIPART PS2智能阀门定位器原理

时间:2019-03-16 00:00 编辑:[db:编辑] 点击:
span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  1、工作原理span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  SIPART PS2智能型电气阀门定位器主要由微处理器、A/D、D/A转换器,实行机构行程检测系统和压电阀模块等部分组成。微处理器对给定值与实际阀位的电子信号进行比较,如果微处理器检测到偏差,马上根据偏差(即给定值W与控制输出X之间的偏差)的大小和方向输出个电控指令给压电阀,压电阀进而调节进入实行机构气室的空气流量,也就是说,压电阀将控制指令转换为气动位移增量。当控制偏差很大时(高速区),定位器输出个连续信号;如偏差不大(低速区),定位器将输出脉冲信号。当控制偏差很小时(自适应或可调死区状态),则设有定位信号输出。当SIPART PS2智能型电气阀门定位器与二制系统连接时,它完全从4~20mA给定信号中获取电源。SIPART PS2智能型电气阀门定位器有单作用定位器和双作用定位器两种,分别用于弹簧加载的实行机构和无弹簧实行机构。参看图1-1。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  2、调校步骤span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  SIPART PS2智能型电气阀门定位器的调校步骤:span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  (1)检查安装在阀门实行机构上的 SIPART PS2智能型电气阀门定位器的安装方式是否正确,固定螺丝、传动轴螺丝、气路接头等是否上紧,传动比选择器(90°/ 33°)位置是否正确。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  (2)检查电路板接触是否良好,检查电气接线是否正确(图1-2)。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  (3)按仪表检定规程通气、通电。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  (4)连按键数次,至显示“36.PRST NO”,当预设置成功后显示“36.PRST OCAY”。这时定位器自理“未初始化”状态。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  (5)按需要实行机构工作的方式要求修改有关程序的参数值。般需要修改的参数有:实行机构类型、反馈角度、给定电流范围、阀门特性、工作方式(正反作用)等。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  (6)按键,直到显示“4.INIT NO”,然后按“+”键大于5S,定位器进入初始化状态。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  (7)在初始化运行RUN1~RUN5过程中,可能检测出操作过程中发生的问题(般在RUN1~RUN2),当初始化运行到RUN3时,可能出现“NOZZLE U”或“NOZZLE D”时,按“-”键手动泄压(排气),初始化继续,当初始化完成时显示“FINISH”。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  (8)完成了初始化设置后,把 SIPART PS2定位器程序投入“AUT(自动)”运行状态。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  3、操作技巧span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  在初始化运行RUN1~RUN5过程中,就会检测出操作过程中发生的问题。若初始化时出现无法继续,则必须按键,停止初始化。这时,可以通过SIPART PS2 智能型电气阀门定位器面板上的LCD和按钮,手动操作气动实行机构。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  当初始化到RUN2(核对实行机构行程并校正零位和行程范围)不能继续时,检查传动比选择器位置是否正确或拨动校正轮。以阀门工作方式为正作用为例,按“+”键,阀门开度增大;按“-”键,阀门开度减小。这时,可以通过观察LCD上显示的反馈阀位信号(0~100%)是否与阀门的实际开度(0~100%)相致。若不致,则可以通过拨动校正轮来实现。通常,先是按“+”或“-”键,把阀门开度手动位移至50%,然后拨动校正轮,直至LCD上显示的反馈信号为50%。接着按“+”键使阀门全开(开度100%),观察LCD上显示的反馈阀位信号是否在85%左右;按“-”键,使阀门全关(开度0%),观察LCD上显示的反馈阀位信号是否有8%左右。若满足以下3个条件,再把阀门开度手动位移至50%左右(这样可缩短调校时间),按调校步骤重新对SIPART PS2智能型电气阀门定位器进行初始化。若无法同时满足以上3个条件,则必须反复拨动(凭经验可推断应该是顺时针或逆时针拨动)校正轮,以求得较好的调校初始位置。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  当初始化运行到RUN3(测定向上/向下两个方向的定位速度)时,若出现“NOZZLE U”或“NOZZLE D”,则说明定位时间太短,如果你认为确定定位时间太短,可以通过调节压电阀模块上的节流装置延长定位时间,否则按“-”键可手动泄压(排气),使初使化继续。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  初始化的第4步(RUN4)为微处理器自动确定小的定位增量。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  初始化的第5步(RUN5)为微处理器对瞬时响应的佳优化,不再用手动调整放大值和衰减值。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  需要指出的是,手动拨动校正轮时几乎无法达到阀门开度(0~100%)与反馈阀位信号(0~100%)相致。就算手动调校很精确了,往往反而初始化不了。因此,手动调校时只要求线性好即可。当SIPART PS2智能型电气阀门定位器进入自动调校后,只要初始化成功,则阀门开度与反馈阀位信号是会严格致的。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  4、检修与维护span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  SIPART PS2智能型电气阀门定位器在我企业的使用中的故障是排气不通畅,憋压,导致“要开阀门开不了,要关阀门关不掉”。解决的办法是,稍微旋松定位器输出工作口的气路接头,使其留有微小的泄气量(根据该定位器的特点,基本不会增加系统的耗气量),这样就可排除,并预防憋压。span class="Apple-converted-space"> /span>/span>br style="font: 14px/1.2em Arial, 宋体; margin: 0px; padding: 0px; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;"/>span style="font: 14px/25.2px Arial, 宋体; color: rgb(0, 0, 0); text-transform: none; text-indent: 0px; letter-spacing: normal; word-spacing: 0px; float: none; display: inline !important; white-space: normal; widows: 1; font-size-adjust: none; font-stretch: normal; background-color: rgb(255, 255, 255); -webkit-text-stroke-width: 0px;">  值得注意的是:日常维护时,应特别注意检查是否有水顺着信号线进入接线端,做好防水处理。信号线下垂的低点(也就是水珠的滑落点)不得高于定位器的进线端口。若信号线是套上金属软管的,应在金属软管上垂的低点剪开个口子用于排水,预防金属软管内充满水后灌入接线端,另种方式可采用隔缆头密封,来防止进水。/span>

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