170M1570200A660V ABB

ABB 170M3818 350 A 660V
ABB 170M3819 400 A 660V
ABB U3-1IGZ/M12 1X630A/660V/IEC3/M12
ABB 170M2673 1000V 20A
ABB 624EGW21020G1171
ABB TP180IA

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Description

PLC数字输入模块为了防止外界线路产生的干扰(如尖峰电压,干扰噪声等)引起PLC的非正常工作甚至是元器件的损坏,一般在PLC的输入侧都采用光耦,来切断PLC内部线路和外部线路电气上的联系,保证PLC的正常工作。并且在输入线路中都设有RC滤波电路,

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