描述
什么是常開觸點(diǎn)接觸器/繼電器在線圈沒有得電時(shí)，斷開狀態(tài)的觸點(diǎn)是常開觸點(diǎn)。行程開關(guān)、壓力繼電器等元件，在不受外力的情況下，斷開狀態(tài)的觸點(diǎn)是常開觸點(diǎn)、閉合狀態(tài)的觸點(diǎn)是常閉觸點(diǎn)。NORMAL：常態(tài)的，OPEN：打開的，CLOSE：關(guān)閉的；電器觸點(diǎn)中NO為常開觸點(diǎn)，與之對應(yīng)的NC為常閉觸點(diǎn)。什么是常閉觸點(diǎn)繼電器在線圈沒有得電時(shí)，閉合狀態(tài)的觸點(diǎn)是常閉觸點(diǎn)。行程開關(guān)、壓力繼電器等元件，在不受外力的情況下，斷開狀態(tài)的觸點(diǎn)是常開觸點(diǎn)、閉合狀態(tài)的觸點(diǎn)是常閉觸點(diǎn)。所謂的繼電器線圈沒有得電就是給繼電器線圈供電的開關(guān)處于斷開的狀態(tài)，繼電器本身常開觸點(diǎn)是斷開狀態(tài)，常閉觸點(diǎn)是閉合狀態(tài)。
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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(zhuǎn)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(cuò)控制系統(tǒng)、基于三重模件冗余（TMR）
結(jié)構(gòu)的zui現(xiàn)代化的容錯(cuò)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(qū)動(dòng)模塊等。
◆Motorola（摩托羅拉）：MVME 162、MVME 167、MVME1772、MVME177等系列。
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