電容式接近開關
LJC12A3-A-Z/AX , LJC12A3-A-Z/BY, LJC12A3-A-Z/AY ,LJC18A3-5-Z/BX, LJC18A3-5-Z/AX LJC18A3-5-Z/BY, LJC18A3-5-Z/AY ,LJC18A3-B-Z/BX , LJC18A3-B-Z/AX, LJC18A3-B-Z/BY LJC18A3-B-Z/AY,LJC24A3-8-Z/BX, LJC24A3-8-Z/AX , LJC24A3-8-Z/BY , LJC24A3-8-Z/AY LJC24A3-8-J/EZ, LJC24A3-8-J/DZ , LJC18A3-B-J/DZ, LJC18A3-5-J/DZ, LJC18A3-5-J/EZ LJC18A3-B-J/EZ,LJC24A3-T-Z/BX, LJC24A3-T-Z/AX, LJC24A3-T-Z/BY , LJC24A3-T-Z/AY LJC24A3-T-J/EZ,LJC24A3-T-J/DZ ,LJC30A3-10-Z/BX, LJC30A3-10-Z/AX ,LJC30A3-10-Z/BY LJC30A3-10-Z/AYLJC30A3-10-J/EZ LJC30A3-10-J/DZ, LJC30A3-H-Z/BX LJC30A3-H-Z/AX LJC30A3-H-Z/BY LJC30A3-H-Z/AY LJC30A3-H-J/EZ LJC30A3-H-J/DZ LJC34A3-K-Z/BX LJC34A3-K-Z/AX LJC34A3-K-Z/BY LJC34A3-K-Z/AY LJC34A3-K-J/EZ LJC34A3-K-J/DZ LJC20A4-10-Z/BXLJC20A4-10-Z/AX LJC20A4-10-Z/BY LJC20A4-10-Z/AY LJC20A4-10-J/EZ LJC20A4-10-J/DZLJC38A4-20-Z/BX LJC38A4-20-Z/AXLJC38A4-20-Z/BY LJC38A4-20-Z/AY LJC38A4-20-J/EZ LJC38A4-20-J/DZLJC80A4-40-Z/BX LJC80A4-40-Z/AXLJC80A4-40-Z/BY LJC80A4-40-Z/AY LJC80A4-40-J/EZ LJC80A4-40-J/DZ LJC12A3-2-Z/BX, LJC12A3-2-Z/AX, LJC12A3-2-Z/BY ,LJC12A3-2-Z/AY, LJC12A3-A-Z/BX
工作原理(lǐ)
電感式接近開關屬於一種有開關量輸出的位置傳感器,它由LC高頻振蕩器和(hé)放(fàng)大處理電(diàn)路組成,利用金屬物(wù)體在接近這個能產生(shēng)電磁場的振蕩感應頭時,使物體內部產生渦流。這個渦流反作用於接近開(kāi)關,使接近開關振(zhèn)蕩能力衰減,內部電路(lù)的參數發(fā)生(shēng)變化,由此識別出有無金屬物體接近,進而控製開關的通或斷(duàn)。這種接近開關所能檢測的物體必須是金屬導電體
電容式接近開關係列
電感式接近開關由三大部(bù)分組成:振蕩器(qì)、開關電路及放大輸出電路。振蕩器產生一個變交磁場,並 達到感應距離時,在金屬(shǔ)目標內產生渦流,從(cóng)而導致振蕩(dàng)衰減,以至停振。
振蕩器振蕩及停振的變化被後級放大電(diàn)路處理並轉換成開關信號,觸發驅動控製(zhì)器件,從而(ér)達到非接觸式之檢測目的。
目標離傳感器越近,線圈內的阻尼就越大,阻尼越大,傳感器振蕩器的電流越小
|