【正文】
L1L2L3 FU1 FU2 KM1 KM2 SB1 SB2 SB3 KM1 KM2 U V W QS 合上電源開(kāi)關(guān) QS KM2 KM1 FR KM1 KM2 FR M 3~ 接觸器、按鈕雙重聯(lián)鎖正反轉(zhuǎn)控制線路 L1L2L3 FU1 FU2 KM1 KM2 SB1 SB2 SB3 KM1 KM2 U V W QS 按下 SB1, SB1動(dòng)斷觸頭斷開(kāi) ,對(duì) KM2聯(lián)鎖 SB1動(dòng)合觸頭閉合 , KM1線圈得電 KM2 KM1 FR KM1 KM2 FR M 3~ 接觸器、按鈕雙重聯(lián)鎖正反轉(zhuǎn)控制線路 L1L2L3 FU1 FU2 KM1 KM2 SB1 SB2 SB3 KM1 KM2 U V W QS KM1動(dòng)合輔助觸頭閉合 ,對(duì) KM1自鎖 KM1動(dòng)合主觸頭閉合 ,電機(jī)正轉(zhuǎn) KM1動(dòng)斷觸頭斷開(kāi) 對(duì) KM2聯(lián)鎖 KM2 KM1 FR KM1 KM2 FR M 3~ 接觸器、按鈕雙重聯(lián)鎖正反轉(zhuǎn)控制線路 L1L2L3 FU1 FU2 KM1 KM2 SB1 SB2 SB3 KM1 KM2 U V W QS 松開(kāi) SB1, SB1動(dòng)斷觸頭閉合SB1動(dòng)合觸頭斷開(kāi)電機(jī)繼續(xù)正轉(zhuǎn)運(yùn)行 KM2 KM