Description
Part Number: DS2020FEXAG4 Product Type: Field exciter Board Manufacturer: General Electric Series: Mark V Country of Origin: United States (USA)
DS2020FEXAG4 is a field exciter Board designed and developed by GE. It is a part of the General Electric Mark V control system.
System Data Communication Networks
The Mark V Control System communicates, shares, and acts on information via three distinct networks. The Stage Link is the primary means of communication between the Operator Interface (I) and the control panel's common data processor (C). This is an ARCNET configuration link. The data exchange network (DENET) is a communication network of the ARCNET type that is built into the Mark V control panel. The DENET's function is to provide a communication link between the control panel's internal processors.
It serves as the foundation for the voting process on control signals in a TMR panel. The I/O network is the third internal network (IONET). The IONET is a serial communications network that is linked in a daisy chain. Its purpose is to transmit I/O signals between the control processor (DCC), the protection core (P), and the digital I/O core (QD1). With the exception of C, the IONET is identical in all processors. As the C core has no direct connection to the P, the IONET communicates only between C and the digital I/O board. A TMR panel has four independent IONETs (R, S, T, and C) in this configuration, whereas a Simplex panel has two (R, and C).
A communication module is a hardware or software component that enables data transmission and communication between devices. It acts as a bridge between devices, allowing data to be passed and communicated between different devices. Communication modules play a vital role in modern communication systems, they can realize the transmission, reception and processing of data, but also provide a safe and stable communication environment. Function of communication module 1. Data transmission function: The communication module can realize data transmission between devices, including real-time data, audio, video and other different types of data. They transmit data from the source device to the target device through various communication protocols and technologies, such as wireless networks, Bluetooth, Ethernet, etc. 2. Data reception and processing function: The communication module can receive the data sent from other devices, and process and decode the data. They are able to identify and extract useful information, which is then passed on to the target device for further processing or display. 3. Security guarantee function: The communication module can provide security guarantee measures to ensure the safe transmission of data. They use encryption and authentication mechanisms to prevent illegal access and data leaks. 4. Network connection function: The communication module can establish a network connection between devices, so that devices can communicate and cooperate with each other. They can connect to different networks, such as local area networks, wide area networks, etc., to achieve remote control and management of devices.
1.1 Digital/analog signal difference The digital input/output signal is the switching signal, 1 or 0, Analog signals, there are two, voltage or current signals, generally the signal transmitted by the transmitter, such as the pressure transmitter to detect the pressure of the water pipe, it will output an analog signal 4-20mA or 0-10V signal to the PLC, PLC for data processing. The switching input point (DI) processes the switching input signal. Analog input point (AI), processing analog input signals (0-20mADC,0-5VDC). Resistance signal (including thermal resistance) input point, processing thermal resistance or general resistance signal. High-speed pulse input point, processing high-speed pulse signal. Voltage (including thermocouple) input point, processing voltage input or thermocouple signal. There is also communication, which is used to exchange data with the upper computer or control the instrument driver of the lower controller 1.2 Difference between digital and analog input modules According to the difference of field input signal, the input module can be divided into switching input module and analog input module. The function of the switching input module is to convert various switching signals into TTL standard signals required by the CPU. According to the input power supply type, it can be divided into DC input module and AC input module. The input signal is converted into TTL (5V) standard signal by photoelectric coupling after voltage division, current limiting and filtering. The function of the analog input module is to convert the continuously changing analog signals such as temperature, flow, current, voltage, etc. into several digital signals that the CPU can process. The analog input circuit is generally composed of op amp conversion, mode conversion (A/D), photoelectric isolation, etc. Types of PLC input and output modules: digital input DI, digital output DO, analog input AI, analog output AO. Digital input and output are generally 24V. There are 4 kinds of analog quantities in 2 categories, and the 2 categories are voltage type and current type respectively. Voltage type has 0-10V and -10 to 10V. Current type mainly has 4-20MA,0-20MA. Then the module converts the analog quantity into A number between +32767 and -32768 through A/D conversion, and then implements the control. The function of the signal template is to convert various process i/o signals. The input signals are converted into digital quantities, which are easy for plc to identify, process and analyze. The output is converted into analog to various regulating mechanisms for execution, or the output is converted into a 2-bit do quantity to control some devices such as start, stop, on and off
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 !！！
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