Abstract: wire drawing machine is one of the common metal wire processing equipment, which can stretch and roll steel wire, copper wire, aluminum wire, etc. Frequency converter is the key equipment of wire drawing machine, which directly affects the quality of wire drawing machine. This paper mainly takes the application of t600-ls308 wire drawing machine as an example to describe the application characteristics of t600-ls308 wire drawing machine. 1、 Introduction The main function of wire drawing machine is to stretch the relatively thick metal wire into relatively thin wire after passing through the mold. Generally, it is tapered step by step through multiple molds, which requires easy threading, fast speed, stability and continuous threading. The straight wire drawing machine is a machine with multiple motors drawing metal wires at the same time, which has high efficiency. It does not allow the metal wire to slip between the molds, and it has high requirements for the synchronization and dynamic response of the motor. Therefore, the performance of the frequency converter directly determines the quality of the wire drawing machine, and requires higher requirements for the winding part. 2、 System composition of wire drawing machine 3、 Performance requirements of wire drawing machine ■ large low-frequency torque and stable output ■ high performance vector control ■ good energy saving effect ■ high precision of proportional linkage control ■ keep the tension constant and prevent wire breakage ■ the latest special chip DSP for high-speed motor control is adopted to ensure fast response of vector control ■ the modular design of hardware circuit ensures the stable and efficient operation of the circuit, and the frequency converter of wire drawing machine ■ the structure adopts independent air duct design, and the fan can be disassembled freely with good heat dissipation ■ no PG vector control, PG vector control and v/f control can be selected ■ powerful input and output multi-function programmable terminal, speed regulating pulse input, two-way analog output ■ wide voltage input, automatic voltage stabilization (AVR) of output voltage, instant power failure without shutdown, stronger adaptability ■ built in advanced PID algorithm, fast response, strong adaptability and simple debugging; 16 section speed control, simple PLC realizes multi-functional logic control such as timing, constant speed and orientation, and a variety of flexible control modes to meet the requirements of various complex working conditions ■ with the built-in international standard Modbus RTU ASCII communication protocol, users can control the upper computer through pc/plc to realize the centralized control of inverter 485 communication network 4、 System composition ◎ according to the equipment conditions, the following models and components are selected as electrical transmission equipment Drafting frequency converter t600-ls308 Winding frequency converter t600-ls308 ◎ the drafting motor adopts t600-ls308 frequency converter, and the special parameters of the stretching line are set; The winding motor adopts t600-ls308 frequency converter and sets special parameters for winding ◎ take the operation command and output frequency signal of the host as the operation command and frequency command of the slave to realize synchronous operation ◎ when parking, for the heavy full disc, the holding brake is used to prevent the disconnection caused by inertia ◎ take the output voltage signal of the swing rod as the feedback signal for internal variable PID correction control, carry out speed prediction graphic operation, and realize constant linear speed winding 5、 Electrical wiring diagram of wire drawing machine 6、 Frequency converter commissioning steps 1) F0.50=1 (restore factory value) 2) Input the motor parameters on the motor nameplate into group F1 parameters F1.02 (motor rated power) F1.04 (motor rated current) F1.06 (rated speed of motor) Then set f1.38=1 to display tune, press the run key on the keyboard to start the self-learning of motor parameters, and 50.00Hz will be displayed after the self-learning is completed 3) Winding frequency converter, set f0.49=3001 (winding frequency converter application macro 2); Extension frequency converter, set f0.49=3010 (extension frequency converter application macro) 4) Determination of swing rod voltage: confirm the lowest and highest voltage value of swing rod through l0.09-ai1 voltage display, and set f5.01 and f5.03 according to the voltage 5) When starting the wire drawing machine, observe the starting speed of the swing rod. If the swing rod starts too fast, extend f9.11 to make the swing rod start slowly; If the swing rod starts too slowly, gradually reduce the value of f9.11 until it is 0 6) The line break detection function is on by default, which can be set by the user according to needs. Generally, it does not need to be changed i. F9.26 PID feedback loses the detection value. When it is set to 0, it is not judged to be lost ii. F9.27 PID loss detection time III. this function code is used to judge whether PID feedback is lost; When the PID feedback quantity is less than the feedback loss detection value f9.26 and the duration exceeds the PID feedback loss detection time f9.27, the frequency converter alarms fault E031. 7) The setting of holding brake function is generally unchanged i. F4.54 frequency detection value fdt1 ii. F4.55 frequency detection fdt1 hysteresis value III. when the operating frequency is higher than the frequency detection value, the multi-function inverter outputs the Y output on signal, and when the frequency is lower than the detection value by a certain frequency, the Y output on signal is cancelled IV. when the frequency converter is used as the wire extension frequency converter of the host, the frequency converter jogs and the corresponding y-output FDT function is invalid; The frequency converter operates normally, and the Y output FDT function is normal. | |||||||
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