PLC的變頻器控制電機(jī)正反轉(zhuǎn)接線圖
1．按接線圖將線連好后，啟動電源，準(zhǔn)備設(shè)置變頻器各參數(shù)。
2．按“MODE”鍵進(jìn)入?yún)?shù)設(shè)置模式，將Pr.79設(shè)置為“2”：外部操作模式，啟動信號由外部端子（STF、STR）輸入，轉(zhuǎn)速調(diào)節(jié)由外部端子（2、5之間、4、5之間、多端速）輸入。
3．連續(xù)按“MODE”按鈕，退出參數(shù)設(shè)置模式。
4．按下正轉(zhuǎn)按鈕，電動機(jī)正轉(zhuǎn)起動運(yùn)行。
5．按下停止按鈕，電動機(jī)停止。
6．按下反轉(zhuǎn)按鈕，電動機(jī)反轉(zhuǎn)起動運(yùn)行。
7．按下停止按鈕，電動機(jī)停止。
8.若在電動正轉(zhuǎn)時(shí)按下反轉(zhuǎn)按鈕，電動機(jī)先停止后反轉(zhuǎn)；反之，若在電動機(jī)反轉(zhuǎn)時(shí)按下正轉(zhuǎn)按鈕，電動機(jī)先停止后正轉(zhuǎn)。
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