【限位(wei)開(kai)關(guan)】限位(wei)開(kai)關(guan)怎么接 限位(wei)開(kai)關(guan)原理介紹
限位開關工作原理
限位開關又稱行(xing)程限(xian)(xian)(xian)(xian)位(wei)開關(guan)(guan)(guan),用于控制機(ji)械(xie)設備(bei)的(de)行(xing)程及(ji)限(xian)(xian)(xian)(xian)位(wei)保(bao)(bao)護。在(zai)實(shi)際生產中,將行(xing)程限(xian)(xian)(xian)(xian)位(wei)開關(guan)(guan)(guan)安(an)裝在(zai)預先(xian)安(an)排的(de)位(wei)置,當裝于生產機(ji)械(xie)運(yun)動(dong)部件上(shang)的(de)模塊(kuai)撞擊行(xing)程開關(guan)(guan)(guan)時,行(xing)程限(xian)(xian)(xian)(xian)位(wei)開關(guan)(guan)(guan)的(de)觸點動(dong)作(zuo)(zuo),實(shi)現電(dian)(dian)路(lu)(lu)的(de)切(qie)換(huan)。因此,限(xian)(xian)(xian)(xian)位(wei)開關(guan)(guan)(guan)是一種根據(ju)運(yun)動(dong)部件的(de)行(xing)程位(wei)置而(er)切(qie)換(huan)電(dian)(dian)路(lu)(lu)的(de)電(dian)(dian)器,它的(de)作(zuo)(zuo)用原(yuan)理與按鈕(niu)類似。限(xian)(xian)(xian)(xian)位(wei)開關(guan)(guan)(guan)廣(guang)泛用于各類機(ji)床(chuang)和(he)起重機(ji)械(xie),用以控制其(qi)行(xing)程、進(jin)行(xing)終(zhong)端限(xian)(xian)(xian)(xian)位(wei)保(bao)(bao)護。在(zai)電(dian)(dian)梯的(de)控制電(dian)(dian)路(lu)(lu)中,還(huan)利用行(xing)程限(xian)(xian)(xian)(xian)位(wei)開關(guan)(guan)(guan)來控制開關(guan)(guan)(guan)轎門的(de)速度、自動(dong)開關(guan)(guan)(guan)門的(de)限(xian)(xian)(xian)(xian)位(wei),轎廂的(de)上(shang)、下限(xian)(xian)(xian)(xian)位(wei)保(bao)(bao)護。
限位開關符號
限位開關就是用以(yi)限(xian)定機(ji)械設備(bei)的(de)(de)(de)(de)(de)運動(dong)極(ji)限(xian)位置的(de)(de)(de)(de)(de)電(dian)氣開(kai)關(guan)。限(xian)位開(kai)關(guan)有(you)接(jie)觸(chu)(chu)式(shi)的(de)(de)(de)(de)(de)和非接(jie)觸(chu)(chu)式(shi)的(de)(de)(de)(de)(de)。接(jie)觸(chu)(chu)式(shi)的(de)(de)(de)(de)(de)比(bi)較(jiao)直觀,機(ji)械設備(bei)的(de)(de)(de)(de)(de)運動(dong)部件上,安(an)裝上行(xing)程開(kai)關(guan),與其相對運動(dong)的(de)(de)(de)(de)(de)固定點上安(an)裝極(ji)限(xian)位置的(de)(de)(de)(de)(de)擋塊,或(huo)者是相反安(an)裝位置。當行(xing)程開(kai)關(guan)的(de)(de)(de)(de)(de)機(ji)械觸(chu)(chu)頭(tou)碰上擋塊時,切斷(duan)了(le)(或(huo)改變了(le))控制電(dian)路,機(ji)械就停止運行(xing)或(huo)改變運行(xing)。由于機(ji)械的(de)(de)(de)(de)(de)慣性運動(dong),這(zhe)種行(xing)程開(kai)關(guan)有(you)一(yi)定的(de)(de)(de)(de)(de)“超行(xing)程”以(yi)保(bao)護開(kai)關(guan)不(bu)受損壞。非接(jie)觸(chu)(chu)式(shi)的(de)(de)(de)(de)(de)形式(shi)很多,常(chang)見的(de)(de)(de)(de)(de)有(you)干(gan)簧(huang)管、光電(dian)式(shi)、感(gan)應式(shi)等,這(zhe)幾(ji)種形式(shi)在(zai)電(dian)梯中都能夠見到(dao)。當然還有(you)更多的(de)(de)(de)(de)(de)先(xian)進形式(shi)。
限位開關(guan)在電路中(zhong)符號(hao)有三種:
限位開關型號
XCKM102H29C
XCKM502H29C
ZCKM1H29C
ZCKM5H29C
ZCKMD39H29
ZCKD02C
XCKM121H29C
XCKM521H29C
ZCKM1H29C
ZCKM5H29C
如何選擇行程開關
根據安裝位置(zhi)和尺寸空間,選擇外形。
根據接(jie)觸方式,選(xuan)擇行(xing)程,接(jie)近(jin),光(guang)電(dian),磁電(dian)開關。
根據電(dian)路信(xin)號需求(qiu),選(xuan)擇觸(chu)頭對數及(ji)常開或常閉(bi)。