PC60113548.26 ABB

ABB BADL 0399 903.02
ABB 3ASC485506E19
ABB 3ASC485514E19
ABB 3ASC648051E1
ABB 3ASC648050E1

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Description

理想状态就是参与互传互递的DCS共有一个“地”,且它们之间的信号参考点的电位应为零,但在生产现场是不可能做到的。因为,各个“地”之间的接线电阻会产生压降,再者所处环境不同,这“地”之间的差异也会引入干扰,将会影响DCS的正确采样


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