Processing of power supply by PLC Power supply is one of the main ways for interference to enter the programmable controller. Power supply interference is mainly generated by impedance coupling of power supply lines, and various high-power electrical equipment is the main source of interference. In situations with strong interference or high reliability requirements. A shielded isolation tra...
The low-pass filter can absorb most of the " burrs " of the power supply . L1 and L2 in the figure are used to suppress high-frequency differential mode voltage . L1 and L2 are reversely wound on the same magnetic ring with equal-length wires , 50HZ The magnetic fluxes generated by the power frequency current in the magnetic ring cancel each other out, and the magnetic ring will not be saturated.&...
The working principle of the system The body of the volumetric tube is a closed volumetric standard made of steel pipes. Its basic volume value refers to the volume of the pipe section between the start detection switch D1 and the end detection switch D2. The volume value is measured by the authorized unit of the State Bureau of Technical Supervision in accordance with the national verification re...
The control scale and complexity of the process control system 1. According to the control scale and complexity of the process control system For different metallurgical production processes, the control scale and complexity of the process control system are different. Usually, DCS is preferred when the process control system is large in scale and high in complexity. Because the system is develope...
Power supply`s running in PLC module The low-pass filter can absorb most of the " burrs " of the power supply .L1 and L2 in the figure are used to suppress high-frequency differential mode voltage . L1 and L2 are reversely wound on the same magnetic ring with equal length wires , The magnetic flux generated by the power frequency current in the magnetic ring cancels each other, and the m...
The difference between the three major control systems of DCS, PLC and FCS We already know that FCS is developed from DCS (Siemens 6ES7322-1HH01-0AA0 SIMATIC S7-300 Digital Output Module) and PLC(Allen Bradley 1785-L60B Enhanced Ethernet Controller). FCS (B&R X20CS1070 Communication Module)not only has the characteristics of DCS and PLC, but also takes a revolutionary st...
The basis of the FCS system is a digital intelligent field device. The digital intelligent field device is the hardware support and foundation of the FCS system. The reason is very simple. The FCS system implements the two-way digital communication field bus signal system between the automatic control device and the field device. If the field device does not follow the unified ...
Reducing information round trips and reducing system cabling Reducing information round trips and reducing system cabling are sometimes at odds with each other. At this time, the principle of saving investment should still be used as the choice. If the response time of the selected system allows, a cable-saving solution should be selected. If the response time of the selected system is rela...