140CPU65260 Correct Cable Selection

140CPU65260 In order to reduce the power cable, especially the frequency converter device feeder cable radiation electromagnetic interference, I used in a project in the copper belt armored shielded power cables, reduce the electromagnetic interference generated by the power line, the project went into operation and achieved satisfactory results.

140CPU65260 different types of signals are transmitted by different cables, signal cables should be laying according to the type of signal transmitted in layers, it is strictly prohibited to use the same cable with different wires at the same time to transmit the power supply and signal, to avoid the signal line and power cables close to the parallel laying, in order to reduce electromagnetic interference.

140CPU65260 the complexity of electromagnetic interference, to eliminate the effects of interference at all is impossible, so in the PLC control system software design and configuration, but also in the software aspects of anti-interference processing, to further improve the reliability of the system. Some commonly used measures to improve the reliability of the software structure include: digital filtering and industrial frequency plastic sampling, which can effectively eliminate cyclical interference; timed correction of the reference point potential, and the use of dynamic zero, which prevents potential drift; the use of information redundancy technology, the design of the corresponding software flag bits; the use of indirect jumps, set the software protection and so on.