MPMA-ACBE4E4A0-S1C
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MPMA-ACBJ2F6A0-S1C
interference from the external wiring of the system, mainly through the power supply and signal lines, commonly referred to as conducted interference. This kind of interference is more serious on the spot of power generation. Because power plants are densely packed with strong electric and electromagnetic fields. 2.2.2.1 interference from power supply. It has been proved in practice that there are many cases of control system failure caused by interference from power supply. As most of the power supply of control system comes from power supply network of power plant, it covers the whole plant and changes inside power network, such as switching operation surge, large-scale power equipment start-stop, AC and DC transmission device caused by harmonic, power grid short-circuit transient impact, etc. , are transmitted to the power supply through the distribution lines. Isolation power is usually used in control power supply, but its isolation is not ideal due to its mechanism and manufacturing process. In fact, due to the existence of the distributed beters, especially the distributed capacitance, absolute isolation is impossible. 2.2.2.2 from the interference introduced by the signal lines, the transmission lines of various signals (signal lines and control command lines) connected with the control system, in addition to transmitting valid inbation of various kinds, will always be invaded by external interference signals. There are two main ways of this interference: one is the power grid interference, which is often ignored by the power supply of the transmitter or the power supply of the common signal instrument, and the other is the interference caused by the induction of electromagnetic radiation in the space, it's an external inductive interference on the signal line, and that's serious. Interference from the signal will lead to I / O signal abnormal work and greatly reduce the accuracy of measurement, serious, will cause component damage. For the system with poor isolation perbance, it will lead to mutual interference between signals, common ground system bus backflow, resulting in logical data changes, misoperation and crash. The I / O Module of the control system is damaged seriously because of the signal interference, and there are many system failures. So it is very important to detect the end of the signal plus isolation (for example: Beijing Pinghe Ph series isolator products) , not only to ensure the accuracy of signal transmission, but also to protect the system I / O module is not damaged.
MPMA-ACBJ2F6A0-S1C
VPL-B0752E-PJ14AA
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VPL-B0752E-PJ12AA
VPL-B0752E-CK12AA
VPL-B0752E-CJ14AA
VPL-B0752E-CJ12AA
VPL-B0751M-PK14AA
VPL-B0751M-PK12AA
VPL-B0751M-PJ14AA
VPL-B0751M-PJ12AA
VPL-B0751M-CJ12AS
VPL-B0633T-PK14AA
VPL-B0751M-CJ12AS
VPL-B0633T-PK14AA
VPL-B0633T-PK12AA
VPL-B0633T-PJ14AA
VPL-B0633T-PJ12AA
VPL-B0633T-CK12AS
VPL-B0633T-CK12AA
VPL-B0633T-CJ12AA
VPL-B0633M-PK14AS
VPL-B0633M-PK14AA
MPMA-ACBE4E4A0-S1C
MPMA-ACBE4E4A0-S1C
