Product Introduction

The 6SE7037-0ES87-1FF0 inverter dedicated line reactor uses H-class impregnation paint to firmly combine the coil and core of the reactor, which not only greatly reduces the noise during operation, but also has an extremely high heat resistance level, which can ensure that the reactor can operate safely and noiselessly at high temperatures.

The 6SE7037-0ES87-1FF0 inverter dedicated line reactor is an electrical appliance that relies on the inductive reactance of the coil to hinder current changes and suppress the high-order harmonics generated by the inverter. It is usually connected in series between the inverter input terminal and the power supply. The inverter dedicated line reactor is mainly used in industrial/factory automation control systems. It is installed between the variable frequency speed regulator and the grid power supply to suppress the surge voltage and current generated by the variable frequency speed regulator, etc., and to minimize the attenuation of high-order harmonics and distorted harmonics in the system.

Siemens rectifier unit installed/cabinet type 6SE7037-0ES87-1FE0 Siemens rectifier unit installed/cabinet type 6SE7037-0ES87-1FE0 Rectifier unit installed/cabinet type 6SE7037-0ES87-1FE0 Siemens rectifier unit installed/cabinet type 6SE7037-0ES87-1FE0 Siemens rectifier unit installed/cabinet type 6SE7037-0ES87-1FE0 Then buy a programming cable, a few dozen, and a computer, and you can learn with Lao Feng. Don't be stingy with money, these things can be sold again after you learn them. You have to believe that learning will never lose money. A friend asked me if I could talk about analog quantity in the future, and then Lao Feng immediately placed an order to buy an FX2N-2AD and FX2N-2DA. Instructions for use of SET and RST instructions: 1) The target elements of SET instructions are Y, M, S, and the target elements of RST instructions are Y, M, S, T, C, D, V, and Z. RST instructions are often used to clear the contents of D, Z, and V, and are also used to reset cumulative timers and counters. 2) For the same target element, SET and RST can be used multiple times, and the order can be arbitrary, and the executor is effective.

V. Conclusion PLC input interface circuit forms and external component (sensor) output forms are diverse. Therefore, it is necessary to understand the PLC input circuit form and sensor output form before wiring the PLC input module to ensure that the PLC input module wiring is correct and can be used with ease in practical applications, laying the foundation for later programming work.Then repeat the process until the stop button is pressed. The light can be represented by the state diagram in Figure 1. Figure 1 Traffic light state diagram hardware and wiring According to the above requirements, it can be seen that 4 red, green, and yellow lights are required, which are implemented by two light boxes in this case; two buttons for start and stop are required, which are implemented by button boxes.

(3) LDP (take rising edge instruction) is a rising edge detection instruction of the normally open contact connected to the left bus. It only connects a scan cycle when the bit element rises (from OFF to ON). (4) LDF (take falling edge instruction) is a falling edge detection instruction of the normally closed contact connected to the left bus. (5) OUT (output instruction) is an instruction to drive the coil, also known as an output instruction.

Mitsubishi FX uses the common positive connection method of the photocoupler on the internal circuit board, so it can only use NPN type. The COM terminal of Siemens or Delta PLC is suspended and you can choose the common positive or common negative connection method by yourself, that is, the type is determined by the choice. The common positive connection can only use NPN, and the common negative connection can only use PNP. However, if the PLC input has multiple groups of COM terminals, each group can have a common positive and a common negative.In addition to executing the user program, in each cycle, the PLC also needs to complete internal processing, communication processing and other tasks. One cycle can be divided into 5 stages (see figure). This repetitive cycle of the PLC is called scanning work. Since the speed at which computers execute instructions is extremely high, from the perspective of the external input-output relationship, the processing seems to be completed simultaneously.

Usually, in order to be consistent with the habits of relay control circuit diagrams, normally open buttons or switches are used as much as possible in the external wiring of PLCs. Why is this the case? Recalling the PLC input circuit, when the external normally open switch is disconnected, no current flows into the input circuit, which means that the normally open contact inside the PLC is disconnected; and when the external normally open switch is closed, current flows into the input circuit, which means that the normally open contact inside the PLC is closed.Among them, the most commonly used is to use jump instructions. As shown in the figure below: Program analysis: M0 is closed, the program jumps to P0 (X001 statement is not executed), M0 is normally closed and disconnected, CJP1 will not occur, and the next statement is executed. At this time, Y003 drives the X002 state. When M0 is disconnected, the program is executed sequentially and drives T003 according to the state of X001. M0 is normally closed and jumps to P1 to drive Y004 according to the state of X003, that is, the statement of X002 driving Y003 is skipped. This is a control circuit. Our circuit is divided into two parts: main circuit and control circuit. 1. The main circuit consists of: QS (circuit breaker), FU (fuse), KM (main contact of the device) and M (motor). 2. Control circuit (also called auxiliary circuit): It consists of FU (fuse), (normally open contact), KM (device coil). Figure 1 is the main circuit and relay control circuit diagram of the forward and reverse control of the three-phase asynchronous motor. Figures 2 and 3 are the external wiring diagram and ladder diagram of the plc control with the same function. Among them, KM1 and KM2 are the AC switches that control the forward and reverse operation respectively. In the ladder diagram, two start-stop circuits are used to control the forward and reverse rotation of the motor respectively.

Siemens rectifier unit installed/cabinet type 6SE7037-0ES87-1FF0 Siemens rectifier unit installed/cabinet type 6SE7037-0ES87-1FF0 Rectifier unit installed/cabinet type 6SE7037-0ES87-1FF0 Siemens rectifier unit installed/cabinet type 6SE7037-0ES87-1FF0 Siemens rectifier unit installed/cabinet type 6SE7037-0ES87-1FF0 Siemens rectifier unit installed/cabinet type 6SE7037-0ES87-1FF0 (2) Integer conversion to double integer (I_DI) What needs to be noted in this issue is: After the integer is converted to a double integer, the sign bit is extended, because the precision of the integer is less than the precision of the double integer. After the conversion, the double integer represents the bits occupied by the integer value, and the remaining empty bits are filled with sign bits. 5. Do not reuse the normally open contacts and normally closed contacts in the basic logic instructions of the plc output coil as enabling conditions. They can be reused for the first time in both syntax and actual programming. The hardware series of A-B's PLC include PLC5, ControlLogix, SLC500, MicroLogix, etc.; there are RSLinx, etc.; monitoring interfaces Intouch, RSView32, etc.; programming RSLogix5, RSLogix500, RSLogix5000.

For the shift cycle instruction, the setting is to rotate the 16#FFFF hexadecimal constant 16 bits to the left, and send it to the output word QW0 (composed of Q0.0~0.7, Q1.0~1.7). No matter how 16#FFFF is rotated, it is still 16#FFFF, 16-bit output. Reset uses a 16-bit left shift instruction to QW0 once per scan cycle, shifting out all the data in QW0 (if it is a word with a sign bit, even the sign bit is shifted out), and the output is reset. The control requirements of traffic lights are as follows: the control switch lights are controlled by the start and stop buttons. When the start button is pressed, the lights start working and work in a cycle. When the stop button is pressed, it will stop at the initial state, that is, the red lights in the north and south are on, prohibiting passage; the green lights in the east and west are on, allowing passage.

Most PLCs come with a 24V DC power supply. The PLC's built-in DC power supply can only be used when the current required by the input device or output device is not very large. 2. The current rating of the PLC input and output ports. The input power supply of the PLC is generally DC24v. The current rating of each point of the input port is between 5mA-7mA. This current is generated when the input port is short-circuited. When the input port has a certain load, the current flowing through it will be corresponding.

The transmission of the photoelectric coupling switch is internally processed, and the light-emitting diode is used as a status light to identify whether the external circuit of channel 2-3 is connected. The other channels are the same. PLC does not require a circuit diagram. It depends on the ladder diagram you want to write to realize the magic function. PLC is customized according to needs and will be randomly provided with wiring diagram.After isolation and power amplification by the output module, the coil of the corresponding hardware relay in the relay-type output module is energized, and its normally open contact is closed, so that the external load is energized and works. If the coil of the output relay in the ladder diagram is "powered off", the corresponding output image register is in the 0 state. After the output processing stage, the coil of the corresponding hardware relay in the relay-type output module is powered off, its normally open contact is disconnected, and the external load is powered off and stops working.

The hardware connection of the PLC to control the inverter with analog quantity is shown in the figure below. Since the Mitsubishi FX2N-32MR PLC has no analog output function, it is necessary to connect an analog output module (such as FX2N-4DA) to it, and then connect the output terminal of the analog output module to the analog input terminal of the inverter.Select the PLC to be uploaded from the list of connectable sites below, and then press the "OK" button in the lower left corner. It should be noted that the S7-300 series PLC program download does not support comments, that is, the uploaded program variables have no comments. The S7-1500 series PLC can download comments, but cannot download variable groups.2. Communication settings After connecting the PLC to the computer with a programming cable, start GXDeveloper, open or create a new project, and then execute the menu command "Online-Transmission Settings". The "Transmission Settings" dialog box pops up. Double-click the "Serial U" icon in the upper left corner to display a detailed settings dialog box, as shown in the figure.Ladder diagram is a commonly used type among many programming languages. It is a programming language that uses graphic symbols and the relationship between graphic symbols in the diagram to represent the control relationship. It evolved from the relay circuit diagram. The correspondence between some symbols of the two is shown in Table 1. Its normally open contact is closed, because the asynchronous motor is not overheated, the normally open contact of the thermal relay is not closed, the input relay X2 is not connected, and its normally closed contact remains closed. At this time, the output relay Y0 is connected, and then the device KM is energized. Its main contact connects the power supply of the motor, and the motor starts to run.

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