原(yuan)電(dian)氣(qi)係(xi)統(tong)由(you)按(an)觸(chu)器(qi)直(zhi)接(jie)正(zheng)反(fan)轉(zhuan)控(kong)製(zhi),釣(diao)鉤(gou)和(he)小(xiao)車(che)控(kong)製(zhi)箱(xiang)電(dian)源(yuan)由(you)大(da)車(che)上(shang)電(dian)源(yuan)箱(xiang)通(tong)過(guo)主(zhu)接(jie)觸(chu)器(qi)控(kong)製(zhi)。釣(diao)鉤(gou)和(he)小(xiao)車(che)電(dian)機(ji)共(gong)用(yong)一(yi)個(ge)主(zhu)斷(duan)路(lu)器(qi)作(zuo)保(bao)護(hu),大車電機單獨一斷路器作保護。現在主電源箱內增加一個小車斷路器。由於變頻器通過外部控製就可以內部實現正反轉,所以隻需輸出三根線到釣鉤限位器。把原電源線改為釣鉤電機線連到限位器,限位器接線稍作改動即可。從主電源箱小車斷路器上重新布一根電機線到小車電機。再布一根六蕊控製線到控製箱。去掉原有的六個接觸器,改由線圈電壓是36V的(de)繼(ji)電(dian)器(qi)取(qu)代(dai),繼(ji)電(dian)氣(qi)隻(zhi)提(ti)供(gong)幹(gan)接(jie)點(dian)。正(zheng)反(fan)轉(zhuan)在(zai)繼(ji)電(dian)器(qi)上(shang)實(shi)現(xian)互(hu)鎖(suo),原(yuan)有(you)的(de)控(kong)製(zhi)線(xian)路(lu)原(yuan)理(li)基(ji)本(ben)不(bu)變(bian),正(zheng)反(fan)轉(zhuan)信(xin)號(hao)由(you)繼(ji)電(dian)器(qi)轉(zhuan)換(huan)送(song)到(dao)變(bian)頻(pin)器(qi),信(xin)號(hao)源(yuan)由(you)變(bian)頻(pin)器(qi)本(ben)身(shen)的(de)CM端給出。
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