REXROTH力士乐高功率电磁铁电磁阀4WE6Y6X/EG24N9K4

电磁阀常见故障

　　1、线圈短路或断路：

　　检测方法：先用万用表测量其通断，阻值趋近于零或无穷大，那说明线圈短路或断路。如果测量其阻值正常（大概是几十欧），还不能说明线圈一定是好的（我有一次测得一个电磁阀线圈阻值大概50欧姆，但电磁阀无法动作，更换该线圈后一切正常），请进行如下最终测试：找一个小螺丝刀放在穿于电磁阀线圈中的金属杆的附近，然后给电磁阀通电，如果感觉到有磁性，那么电磁阀线圈是好的，否则是坏的。

　　处理方法：更换电磁阀线圈。

　　2、插头/插座有问题：

　　故障现象：

　　如果电磁阀是有插头/插座的那种，有可能出现插座的金属簧片问题（笔者就碰到过）、插头上接线的问题（比如将电源线接到接地线上去了）等原因无法将电源送到线圈中。最好养成一个习惯：插头插在插座上之后把固定螺丝拧上，线圈上在阀芯杆之后把固定螺母拧上。

　　如果电磁阀线圈的插头配备有发光二极管电源指示灯，那么采用DC电源驱动电磁阀时即行就要接对，否则指示灯不会亮。另外，不要将不同电压等级的带发光二级管电源指示的电源插头调换使用，这样会导致发光二极管被烧毁/电源（换用低电压等级的插头）出现短路或发光二极管发光很微弱（换用高电压等级的插头）。

　　如果不带电源指示灯，电磁阀线圈是不用区分极性的（不象线圈电压为直流的晶体管时间继电器以及线圈上并联有二极管/电阻泄漏回路的线圈电压为直流的中间继电器<这种中间继电器以原装小日本的居多>，需要区分极性）。

　　处理方法：修正接线错误、修复或更换插头、插座。

　　3、阀芯问题：

　　故障现象1：在电磁阀所通介质压力正常的情况下，按下电磁阀红色的手动按钮，电磁阀都没有任何反应（压力介质没有出现通断的变化），说明阀芯一定是坏的。

　　处理方法：检查介质是否存在问题，如压缩空气内是否有很多积水（有时候油水分离器起的作用不是很大，特别是当管路设计不良时通到电磁阀的压缩空气会有很多积水）、所通液体介质是否有很多杂质。然后清除电磁阀及管路中的积水或杂质。如果再不行，请维修（如果你有时间有耐心而且有必要的话@_@）或更换阀芯，或者干脆把整个电磁阀全部换掉。

　　故障现象2：经过检查，线圈是原配线圈而且线圈通电时磁性正常，但电磁阀依然不动作（这时电磁阀手动按钮的功能有可能是正常的），说明阀芯是坏的。

　　处理方法：请维修或更换阀芯，或者干脆把整个电磁阀全部换掉。

　　至于电磁阀阀体的维修，因为种类太多，那么多种的维修方法也说不了很多，这里就不再赘述了。

电磁阀（Electromagnetic valve）是用电磁控制的工业设备,是用来控制流体的自动化基础元件,属于执行器,并不限于液压,气动。用在工业控制系统中调整介质的方向,流量,速度和其他的参数。电磁阀可以配合不同的电路来实现预期的控制,而控制的精度和灵活性都能够保证。电磁阀有很多种,不同的电磁阀在控制系统的不同位置发挥作用,最常用的是单向阀,安全阀,方向控制阀,速度调节阀等。

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