6、开关行程:0.25mm
光电开关
光电开关是传感器大家族中的成员,它把发射端和接收端之间光的强弱变化转化为电流的变化以达到探测目的。由于光电开关输出回路和输入回路是电隔离的(即电缘绝),所以它可以在许多场合得到应用。
采用集成电路技术和SMT表面安装工艺而制造的新一代光电开关器件,具有延时、展宽、外同步、抗相互干扰、可靠性高、工作区域稳定和自诊断等智能化功能。这种新颖的光电开关是一种采用脉冲调制的主动式光电探测系统型电子开关,它所使用的冷光源有红外光、红色光、绿色光和蓝色光等,可非接触,无损伤地*和控制各种固体、液体、透明体、黑体、柔软体和烟雾等物质的状态和动作。接触式行程开关存在响应速度低、精度差、接触检测*损坏被检测物及寿命短等缺点,而晶体管接近开关的作用距离短,不能直接检测非金属材料。但是,新型光电开关则克服了它们的上述缺点,而且体积小、功能多、寿命长、精度高、响应速度快、检测距离远以及抗光、电、磁干扰能力强。
这种新型的光电开关已被用作物位检测、液位控制、产品计数、宽度判别、速度检测、定长剪切、孔洞识别、信号延时、自动门传感、色标检出、冲床和剪切机以及安全防护等诸多领域。此外,利用红外线的隐蔽性,还可在银行、仓库、商店、办公室以及其它需要的场合作为防盗警戒之用。
在维修开关电源的时候可以采用降压检修法。其方法是:将显示器的电源插头接在一个交流调压器上,再把调压
电器开关
电器开关(9张)
器的输出电压调到100V左右,然后通电检修,并逐次提高电源电压来检修。
故障实例一:开机便烧坏保险,输出电压为零。这种情况一般是由于开关管被击穿,发射较和集电极短路所造成的。此时可先将开关管拆下,测其发射较和集电极对地电阻,如为零或很小,则换掉即可。但也要检查下其它元器件有无问题后方能开机。
故障实例二:光栅出现“S”形的扭曲。这种问题应重点检查滤波电路和稳压电路,一般是因为有一只二极管断路,由全波整流变成半波整流,这也可能是其滤波电容容量减少所致。
故障实例三:交流220V整流滤波电路出现短路性故障,且开机烧保险。先检查一下整流二极管有无短路、滤波电容是否严重漏电。还可拔去消磁线圈插头,检查一下消磁热敏电阻有无短路性故障,如有应换新。
故障实例四:开机无光栅、无显示、电源指示灯不亮,但未烧保险。这时应检查交流互感变压器是否开路、整流电路的限流电阻有无开路(烧断)失效,或整流二极管是否断路。
故障实例五:无光栅、无显示,且机内发出异常声响。如发出“吱吱”声,说明振荡频率低,应检查与振荡有关的元件,如发出“嗒嗒”声,说明电源过流保护,应检查过流保护电路。
SOK标准分类编辑
按检测方式分类
下面以为例来介绍光电开关的分类方法:按检测方式可分为反射式、对射式和镜面反射式三种类型。对射式检测距离远,可检测半透明物体的密度(透光度)。反射式的工作距离被限定在光束的交点附近,以避免背景影响。镜面反射式的反射距离较远,适宜作远距离检测,也可检测透明或半透明物体。
按结构分类
光电开关按结构可分为放大器分离型、放大器内藏型和电源内藏型三类。
1)放大器分离型是将放大器与传感器分离,并采用**集成电路和混合安装工艺制成,由于传感器具有**小型和多品种的特点,而放大器的功能较多。因此,该类型采用端子台连接方式,并可交、直流电源通用。具有接通和断开延时功能,可设置亮、音动切换开关,能控制6种输出状态,兼有接点和电平两种输出方式。
2)放大器内藏型是将放大器与传感一体化,采用**集成电路和表面安装工艺制成,使用直流电源工作。其响应速度局面(有0.1ms和1ms两种),能检测狭小和高速运动的物体。改变电源极性可转换亮、暗动,并可设置自诊断稳定工作区指示灯。兼有电压和电流两种输出方式,能防止相互干扰,在系统安装中十分方便。
3)电源内藏型是将放大器、传感器与电源装置一体化,采用**集成电路和表面安装工艺制成。它一般使用交流电源,适用于在生产现场取代接触式行程开关,可直接用于强电控制电路。也可自行设置自诊断稳定工作区指示灯,输出备有SSR固态继电器或继电器常开、常闭接点,可防止相互干扰,并可紧密安装在系统中
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MOOG阀D634-319C
MOOG伺服阀D634-543ATypeR40KO2F3VSP2S/NPp350baYsuppiy24VDC
MOOG伺服阀D661-4341C
MOOG伺服阀D633-482B-R01KO1M0VSX2
MOOG伺服比例阀D634-543AR40K02F3VSP2
MOOG备件D662-4102 D02HYBD5NSX4-0
MOOG伺服阀D661-4651G35JOAA6VSX2HA
MOOG伺服阀G761-3001B
MOOG阀D661-4651
MOOG阀D662-Z4334K
MOOG液压阀D633-525B
MOOG伺服阀D661-4598C
MOOG备件D661-4569C
MOOG阀D662-Z4334K
MOOG备件D956-0003
MOOG备件D634-374C R24KO2M0VSM2
MOOG伺服阀D662-4014 D01JABF6VSX3-A
MOOG伺服阀D662-4010D02HABF6VSX2-A
MOOG电液伺服阀H10JDFM4VBR
MOOG阀D662-Z4334K
MOOG伺服阀D791-4043/S16JOQA5VSX2-B
MOOG伺服阀D633R04KO1MONSM2
MOOG备件D951-2079/B
MOOG伺服阀D662-4014/D01JABF6VSX2-A
MOOG伺服阀D662-4010D02HABF6VSX2-A
MOOG伺服阀D664Z4306K
MOOG备件D662Z4769A
MOOG液压阀G761-3008
MOOG伺服阀D662Z4334K/P01JOMF6VSX2-A
MOOG伺服阀D661-4652G15JOAA6VSX2HA
MOOG阀D661-4511C/G75KOAO5NSM2HA
MOOG备件mod:D930-211-0003 type:R04KB910HEM2-BCM1G1
MOOG伺服阀D661-4443CG45JOAA6VSX2HA
MOOG阀D661-4059/P80HABF6VSX2-B
MOOG备件D661-4822B
MOOG阀XAB10203-000-01
MOOG伺服阀D633-344B R08KO1M3NSP2
MOOG备件D136001007
MOOG阀D661-4651
MOOG伺服阀G761-3602-S63JOGM5UPL
MOOG备件D661-6428E
MOOG阀D634-319C TYPE:R40KO2MONSP2
MOOG伺服阀D663-4007L03HABD6VSX2-A
MOOG阀D633-507B R01KO1M0VSM2
MOOG备件G123-825-001 4-20mA
MOOG伺服阀D664-4747
MOOG伺服阀D661-4651/G35JOAA6VSX2HA
MOOGPM1伺服阀G771K201A
MOOG阀D661-4651/G35JOAA6VSX2HA
MOOG备件G771K226A 312A6077P008
MOOG备件Mod D061-9320 Type JO9KOAM41HN1 S/N D2366 350bar ** ±150mA supply 24v﹦
MOOG阀D661-6348E
MOOG伺服阀MOOG D663Z4307K/P02H0NF6VSX2-A
MOOG伺服阀D662-4723 D01HDBM6NSF2-A
MOOG伺服阀D691-Q60 带插头
MOOGvalveG761-3033B
MOOG阀D661-4651
MOOG伺服阀D061-8310 J15HOBM4HB1
MOOG伺服阀D663-4007L03HABD6VSX2
MOOG伺服阀D664-4747
MOOG伺服阀D634-501A
MOOG伺服阀D635-671E/R02FB1F0NSM2M
MOOG伺服阀G761-3625B/H38JOGM4VPH
MOOG伺服阀D662-4307K P02HAMD6NSX4-0
MOOG伺服阀D661-6353E-G60JOCA6VSX2HO
MOOG备件D663-4007
MOOG阀D634-319C
MOOG阀D634-341C
MOOG阀D662-Z4334K
MOOG阀D662-4010
MOOG伺服阀D661-4651G35JOAA6VSX2HA
MOOG备件D-71034 0514700591
MOOG伺服阀D661-4642
MOOG伺服阀D661-4443CG45JOAA6VSX2HA
MOOG伺服阀D663-4317KP03HXMF6NEX2-E
MOOG伺服阀D662-4709 D02HYBW5NSX4-0
MOOG伺服阀G631-3008B
MOOG比例阀D663-4007L03HABD6VSX2-A
MOOG备件D633-427B RXXKX1F0NSS2
MOOG伺服阀D664-4010
MOOG泵MOD D956-2087/B S/N:DA11026 TYPE HP-R18A7-RKP100TM28C1Z00
MOOG伺服阀D661-4179b
MOOG伺服阀D953-2039 /C
MOOG伺服阀D633-525B/R16KO1FOVSX2
MOOG伺服阀MOOG D663Z4307K/P02H0NF6VSX2-A
MOOG阀D791-4021
MOOG备件D634-514A
MOOG伺服阀D765-1048-4/S63JOGMEUSX0
MOOG电液伺服阀79F2012B3-HR5
MOOG伺服阀D661-4444C/G60JOAA6VSX2HA
MOOG阀D634-319C R40K02MONSP2
MOOG阀D662-4010
MOOGvalveG761-3033B
MOOG备件D634-528A,R40KO2F0NSX2,24VDC
MOOG伺服阀D791-5045/S16JOQA6VSBO-P
MOOG阀D633-317B
MOOG液压阀D633-525B
MOOG转换器D634-319C
MOOG阀D663-4007/L03HABD6VSX2-A
MOOG阀D663-4007 L03HABD6VSX2-A
MOOG伺服阀B80HUAP5NED2-H
MOOG阀D691-074D比例阀
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