3BHB003431R0101 KUC720AE01 | ABB Power Board

Description

The Programmable Logic Controller was first introduced in the United States in the late 1960s, when it was called the Programmable Logic Controller (PLC), which was used to replace relays. To perform logical judgment, timing, counting and other sequential control functions. The concept of PLC was proposed by General Motors. The basic design idea of PLC is to combine the advantages of computer function perfect, flexible, universal and relay control system simple and easy to understand, easy to operate, cheap and so on, the controller hardware is standard and universal. According to the actual application object, the control content is compiled into software and written into the user program memory of the controller, so that the connection between the controller and the controlled object is convenient. PLC features and functions (1) The main characteristics of plc. The characteristics of plc are: reliable work, fast running speed, building block structure, flexible combination, good compatibility, simple programming and generation, rich, strong network function. (2) The main functions of plc. plc system can well complete the industrial real-time sequence control, condition control, counting control, step control and other functions; It can complete analog/digital (a/d), digital/analog (d/a) conversion, data processing, communication networking, real-time monitoring and other functions. Years of practice shows that plc, reliable, is designed for the factory, with reinforced components according to the requirements of the working environment, real-time scanning practice and fault diagnosis function, easy troubleshooting, won the preference of users. What makes a plc so reliable is a real-time core or operating system of executable relay logic, sequential function diagrams, function blocks, structured text, command catalogs, or a combination thereof. In case of failure, the built-in device can maintain mechanical damage and maintain an orderly and predictable sequence. 2.4 The development trend of plc: there are extremely fast logical operations and logic control, sequence control capabilities, reliability in discrete control, convenient and easy to learn programming methods, so that it has an undisputed position in the field of industrial automation based on discrete.

An Analog to Digital Converter (ADC) is an electronic device used to convert an analog signal to a digital signal. It usually exists in the form of a plug-in board, which can be connected to a computer or other control system for the acquisition and conversion of analog signals. 1. Analog signal acquisition: analog digital acquisition board converts analog signals to digital signals through the built-in analog-to-digital converter (ADC). It can receive analog signals from sensors, instruments and external signal sources, such as voltage, current, temperature, pressure, etc. The acquisition board has high speed and high precision sampling performance, and can continuously measure and collect analog signals in a certain range. 2. Digital signal output: After the analog signal conversion is completed, the analog digital acquisition board will transmit the converted digital signal to the computer or control system for further processing, analysis and storage. The digital signal output can be in the form of pulse code modulation (PCM), or other common digital signal formats. 3. Multi-channel and multi-function: analog digital acquisition board usually has a multi-channel input function, which can collect multiple analog signal sources at the same time. In addition, they usually have other functions, such as voltage amplification, filtering, sampling rate selection, etc., to meet the needs of different application scenarios. 4. Communication interface: Analog digital acquisition board usually provides a variety of communication interfaces, including PCI, PCIe, USB and Ethernet, in order to connect with the computer or control system. These interfaces provide convenient data transmission and control, making the integration of the acquisition board with other devices more flexible and convenient. 5. Application: analog digital acquisition board is widely used in various fields, such as scientific research, industrial automation, data acquisition, instrumentation and so on. They can be used for various types of sensor measurements and instrument monitoring, such as temperature measurement, pressure monitoring, vibration analysis, etc. When selecting the appropriate analog and digital acquisition board, the following factors need to be considered: sampling rate, resolution, number of input channels, power supply mode, communication interface and software support. These factors will vary depending on the specific application needs.

Analog refers to some continuous change of physical quantities, such as voltage, current, pressure, speed, flow and other semaphore, analog signal is the amplitude of continuous change with time signal, usually the voltage signal is 0~10V, the current signal is 4~20mA, can use the PLC analog module for data acquisition, which can be converted to digital quantity after sampling and quantization. When it comes to simulation, we have to mention AI and AO, and let's explain AI and AO below. AI and AO's explanation (1) AI signal: analog input The so-called analog quantity is 4-20mA or 0-10V current or voltage signal, input into the DCS, after transformation, restore the original value, such as the current value displayed in the DCS; The secondary value of the current transformer (5A) is converted into a 4-20mA signal by the current transmitter (5A corresponds to 20mA), which is input to the DCS cabinet, and the actual current value is displayed in the DCS after conversion. (2) AO signal: analog output In contrast to AI, AO is the DCS output 4-20mA or 0-10V signal to control the operating parameters of the device; For example, the speed control process of the frequency converter, taking 40HZ as an example, through remote DCS control, that given the parameter value: 40HZ, DCS also sends a corresponding analog current value, in the range of 4-20mA (20mA corresponds to 50HZ), the signal is passed to the controller of the frequency converter, and the frequency converter runs at 40HZ as required.

The company focuses on DCS, PLC, robot, large servo four systems

The main products are various modules/cards, controllers, touch screens, servo drivers Company advantage: Supply imported original products, professional production of spare parts One year warranty, fast delivery time, complete supply !！！ ① 24 hours email response (12 hours); ② For shipment outside Asia, please contact the seller.

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