描述
CR-GEN0-M6400R3
在梯形圖中,將Y0和Y1的常閉觸點(diǎn)分別與對方的線圈串聯(lián),可以保證它們不會(huì)同時(shí)為ON,因此KM1和KM2的線圈不會(huì)同時(shí)通電,這種安全措施在繼電器電路中稱為“互鎖”。除此之外,為了方便操作和保證Y0和Y1不會(huì)同時(shí)為ON,在梯形圖中還設(shè)置了“按鈕聯(lián)鎖”,即將反轉(zhuǎn)起動(dòng)按鈕X1的常閉觸點(diǎn)與控制正轉(zhuǎn)的Y0的線圈串聯(lián),將正轉(zhuǎn)起動(dòng)按鈕X0的常閉觸點(diǎn)與控制反轉(zhuǎn)的Y1的線圈串聯(lián)。設(shè)Y0為ON,電動(dòng)機(jī)正轉(zhuǎn),這時(shí)如果想改為反轉(zhuǎn)運(yùn)行,可以不按停止按鈕SB1,直接按反轉(zhuǎn)起動(dòng)按鈕SB3,X1變?yōu)镺N,它的常閉觸點(diǎn)斷開,使Y0線圈“失電”,同時(shí)X1的常開觸點(diǎn)接通,使Y1的線圈“得電”,電機(jī)由正轉(zhuǎn)變?yōu)榉崔D(zhuǎn)。
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