TRICONEX 3700
TRICONEX 3700
TRICONEX 3700
Practice has proven that there are many cases of PLC control system failures caused by interference introduced by the power supply. The author encountered this problem during a certain project debugging and later replaced it with a PLC power supply with higher isolation performance to solve the problem.
The normal power supply of the PLC system is supplied by the power grid. Due to the wide coverage of the power grid, it will be subject to all spatial electromagnetic interference and induce voltage and circuits on the line. Especially the changes within the power grid, such as surges during switch operation, start-up and shutdown of large power equipment, harmonics caused by AC and DC transmission devices, and transient impacts of power grid short circuits, are all transmitted to the power source through transmission lines. PLC power supply usually adopts isolated power supply, but its isolation is not ideal due to its structure and manufacturing process factors. In fact, isolation is impossible due to the presence of distributed parameters, especially distributed capacitors.
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