ao820

ao820

 當有源輸入元件（霍爾開關、接近開關、光電開關、光幕傳感器等）數(shù)量比較多，消耗功率比較大，PLC內置電源不能滿足時，需要配置外置電源。根據(jù)需求可以配24VDC，功率的開關電源。外置電源原則上不能與內置電源并聯(lián)，根據(jù)COM與外部共線的特點， SINK（sink Current 拉電流）輸入方式時，外置電源與內置電源正極相連接；SRCE（source Current 灌電流）輸入方式時，外置電源與內置電源負極相連接。

簡單判斷SINK（sink Current 拉電流）輸入方式，只需要Xn端與負極短路，如果接口指示燈亮就說明是SINK輸入方式。共正極的光藕合器，可接NPN型的傳感器。SRCE（source Current 灌電流）輸入方式，將Xn端與正極短路，如果接口指示燈亮就說明是SRCE輸入方式。共負極的光藕合器，可接PNP型的傳感器。

 對于2線式的開關量輸入，如果是無源觸點，SINK與SRCE按上圖的輸入元件接法，對于2線式的接近開關，需要判斷接近開關的極性，正確接入。

速雙端輸入電路

主要用于硬件高速計數(shù)器（HHSC）的輸入使用，接口電壓為5VDC，在應用上為確保高速及高噪音抗性通常采用雙線驅動方式（Line-Drive）。如果工作頻率不高與噪音低也可以采用5VDC的單端SINK或者SRCE接法，串聯(lián)一個限流電阻轉換成24VDC的單端SINK或者SRCE接法。

Allen-Bradley 1336F-BRF100-AE-EN-HAS2-L5 10HP 480v VFD

Allen Bradley 1336F-BRF15-AN-EN-L5 1336 Plus II +manual

Allen Bradley 1336F-BRF50-AA-EN AC Motor Drive  

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ALLEN BRADLEY 1336F-BRF10-AA-EN5 NSFP 1336FBRF10AAEN5

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ALLEN BRADLEY 1336F-BRF10-AA-EN-GMS5-L4 DRIVE 1HP **

 Allen Bradley 10HP AC Drive 1336F-BRF100-AN-EN-L6 

Allen-Bradley AC Drive 7.5 HP 1336F-CWF75-AN-EN

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