IMFEC12 ABB

PP846A Bently
3300/15 Bently
3300/90 Bently
3300/61 Bently
3300/03 Bently
3300/40 Bently
70PR05B-ES ABB
1756-L8SP Rockwell
3300/85 Bently

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描述

PLC控制系统的输入电路设计。PLC供电电源一般为AC85—240V,适应电源范围较宽,但为了抗干扰,应加装电源净化元件(如电源滤波器、1:1隔离变压器等);隔离变压器也可以采用双隔离技术,即变压器的初、次级线圈屏蔽层与初级电气中性点接大地,次级线圈屏蔽层接PLC输入电路的地,以减小高低频脉冲干扰。

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