描述

向左進給的控制回路是：

9→SQ5-2→11→SQ4-2→12→SQ3-2→13→SA3-1→16→SQ2-1→19→KM3線圈→20→KM2→21。

當將縱向進給手柄扳回到中間位置（或稱零位）時，一方面縱向運動的機械機構脫開，另一方面微動開關SQ1和SQ2都復位，其常開觸點斷開，接觸器KM2和KM3釋放，進給電動機M3停止，工作臺也停止。

終端限位保護的實現(xiàn)：在工作臺的兩端各有一塊擋鐵，當工作臺移動到擋鐵碰動縱向進給手柄位置時，會使縱向進給手柄回到中間位置，實現(xiàn)自動停車。這就是終端限位保護。調整擋鐵在工作臺上的位置，可以改變停車的終端位置。

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主營：世界知名品牌的PLC、DCS系統(tǒng)備件模塊

①Allen-Bradley(美國AB)系列產(chǎn)品》

②Schneider(施耐德電氣)系列產(chǎn)品》

③General electric(通用電氣)系列產(chǎn)品》

④Westinghouse（美國西屋）系列產(chǎn)品》

⑤SIEMENS(西門子系列產(chǎn)品)》

⑥銷售ABB Robots.FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、PanasonicRobots、MOTOMAN Robots。

⑦estinghouse（西屋）：OVATION系統(tǒng)、WDPF系統(tǒng)、MAX1000系統(tǒng)備件。

⑧Invensys Foxboro（?？怂共_）：I/A Series系統(tǒng)，F(xiàn)BM（現(xiàn)場輸入/輸出模塊）

順序控制、梯形邏輯控制、事故追憶處理、數(shù)模轉換、輸入/輸出信號處理、數(shù)

據(jù)通信及處理等。Invensys Triconex:冗余容錯控制系統(tǒng)、基于三重模件冗余（TMR）

結構的zui現(xiàn)代化的容錯控制器。

⑨Siemens(西門子)：Siemens MOORE，Siemens Simatic C1，Siemens數(shù)控系統(tǒng)等。

⑩Bosch Rexroth（博世力士樂）：Indramat，I/O模塊,PLC控制器,驅動模塊等。

◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。

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