1756-TBNH
系統(tǒng)組成 系統(tǒng)由1塊24點(diǎn)的高性能CPU處理器LM3106（14點(diǎn)開關(guān)量輸入和10點(diǎn)晶體管輸出）、1塊2通道的模擬量輸出模塊LM3320、1塊8點(diǎn)開關(guān)量輸入模塊LM3210，實(shí)現(xiàn)對電熔磨削復(fù)合機(jī)床的控制。 主控單元PLC配置圖如下： 和利時公司小型一體化PLC HOLLiAS LM系列產(chǎn)品 LM3106＋LM3320＋LM3210 系統(tǒng)控制原理 機(jī)床運(yùn)動控制系統(tǒng)由四大部組成：機(jī)床主軸運(yùn)動控制、砂輪主軸運(yùn)動控制、頭架主軸運(yùn)動控制、工作臺運(yùn)動控制。 1）機(jī)床主軸運(yùn)動控制 機(jī)床主軸是由一臺5.5KW的電機(jī)驅(qū)動，轉(zhuǎn)速的變化由5.5KW變頻器調(diào)節(jié)，變頻器的控制信號來源于模擬量輸出模塊LM3320的第一通道。由于在電熔放電加工過程中，主軸放電盤與工件頭架是處于非接觸狀態(tài)，且兩者間需保持一定的相對運(yùn)動（線）速度才能保證正常加工，因此，主軸轉(zhuǎn)速隨工件頭架轉(zhuǎn)速的變化由PLC系統(tǒng)作相應(yīng)調(diào)整。PLC是根據(jù)旋轉(zhuǎn)編碼器測量反饋的當(dāng)前工件頭架速度信號適時調(diào)整變頻器的輸出驅(qū)動頻率值，從面保證機(jī)床主軸變頻電機(jī)能以要求的速度平穩(wěn)運(yùn)行。 控制原理如圖：
2）砂輪主軸運(yùn)動控制 砂輪主軸只須獲得恒定轉(zhuǎn)速，控制7.5KW交流異步電動機(jī)。 3）頭架主軸運(yùn)動控制 為保證加工精度，Φ32∽Φ320mm的工件需以恒定的線速度轉(zhuǎn)動，因此頭架主軸的轉(zhuǎn)速是根據(jù)被加工工件的直徑由PLC系統(tǒng)自動控制，由編碼器自動調(diào)整?？刂菩盘柺悄M量輸出模塊LM3320的第二通道控制頭架電機(jī)的驅(qū)動變頻器調(diào)節(jié)頭架電機(jī)轉(zhuǎn)速。
【公 司】： 廈門卡庫電氣有限公司
【主 營】： AB、GE、施耐德等各類PLC產(chǎn)品
【價 格】： 電議
【發(fā)布人】： 嚴(yán)工
【電 話】： 18030229052
【所在地】： 福建 - 廈門
【坐 機(jī)】： 0592-5709823
【Q Q】： 1093230189
General Electric DS3800NHVM1E1C Circuit Board - Used
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GENERAL ELECTRIC GE CIRCUIT BOARD IC3600AFRA1A1A 00/900
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Gould Modicon AEG Circuit Board AS-509P-003 _ AS509P003 _ Rev A7
Gould Modicon AEG Circuit Board AS-509P-003 Rev A3 _ AS509P003 _ PROM 1000
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