Interface circuit between power supply coupler and PLC
Source: InternetPublisher:通通 Keywords: PLC interface circuit coupler power supply Updated: 2021/02/23
If necessary, a first-level photocoupler can be added outside the input point such as PLC to protect electronic devices such as PLC
, as
shown in the figure. In this way, once high voltage invades the circuit, the protection-level photocoupler is broken down, and then the photocoupler
can be
replaced as easily as replacing the fuse .
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