HL000384P0101
HL000384P0101
【廈門莫格電氣自動化有限公司】
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起動時,合上隔離開關(guān)QS。引入三相電源,按下起動按鈕SB2,接觸器KM的線圈通電,接觸器的主觸頭閉合,電動機接通電源直接起動運轉(zhuǎn)。同時與SB2并聯(lián)的常開輔助觸頭KM也閉合,使接觸器線圈經(jīng)兩條路通電,這樣,當(dāng)SB2復(fù)位時,KM的線圈仍可通過KM觸頭繼續(xù)通電,從而保持電動機的連續(xù)運行。這種依靠按接觸器自身常開輔助觸頭而使其線圈保持通電的功能稱為自?;蜃枣i,這一對起自鎖作用的觸頭稱作自鎖觸頭。
要使電動機停止運轉(zhuǎn),只要按下停止按鈕SB1,將控制電路斷開,接觸器KM斷電釋放,KM的常開主觸頭將三相電源切斷,電動機停止運轉(zhuǎn)。當(dāng)按鈕SB1松開而恢復(fù)閉合時,接觸器線圈已不能再依靠自鎖觸頭通電了,因為原來閉合的觸頭早已隨著接觸器的斷電而斷開了。
起保停電路實現(xiàn)了電動機的連續(xù)運行控制。但有些生產(chǎn)機械要求按鈕按下時,電動機運轉(zhuǎn),松開按鈕時,電動機就停止,這就是點動控制。
MITSUBISHI FREQROL INVERTER 1.5KW AC DRIVE FR-A024-S1.5K-E?C
MITSUBISHI ELECTRIC MELSERVO 100W AC SERVO DRIVE MR-J2S-10B1
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MITSUBISHI FREQROL-Z200 1HP 5A 3PH SPINDLE DRIVE FR-Z220-0 75K-UL
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