cnc router Inverter spindle driver.

Inverter is a special part of the engraving machine, say special because of the wood engraving machine plays an irreplaceable role. Understanding and use of the Inverter, more conducive to better use by users engraving machine. Changsha new leaves NC for users to introduce some basic knowledge of woodworking engraving machine.
What is a converter
    Inverter is the use of power semiconductor devices role will be off frequency power conversion for power control device to another frequency to achieve the AC induction motor soft starters, frequency control, improve running accuracy, changing the power factor, overcurrent / overvoltage / overload protection function, the spindle Inverter important woodworking engraving machine is also true, you can change the engraving machine motor voltage and operating frequency, you can also protect the motor and other equipment.
    Inverter is usually divided into four parts: the rectifier unit, high-capacity capacitors, inverters and control
    Rectifier unit: a fixed operating frequency alternating current is converted to direct current.
    High-capacity capacitor: energy stored after conversion.
    Inverter: the array of high-power electronic switches of the switching transistor, the direct current is converted to a different frequency, width and amplitude of the square wave.
    Controller: work according to the set procedures, control the amplitude and pulse width of the square wave output, making an approximate sine wave superimposed alternating current, AC motor Inverter.
2 wood engraving machine spindle Inverter brand
    Because of the special role of the inverter, are already widely used in woodworking engraving machine, commonly used in the inverter power is 1.5 kW 2.2 kilowatts, 3.7 kilowatts several. Common market day Inverter brand extension, Fu Ling, Delta, Quartet, Tiankai and other models.
Features and functions of the inverter 3 wood engraving machine introduced
     Features (1) wood engraving machine inverter
     Optimized space vector modulation, the control is more precise.
     Optimized flux control, so low-frequency output torque further improved. 150% of rated output torque at startup.
     Output frequency 0.00-400Hz, resolution of 0.01Hz.
     You can set the V / F curve with two power of V / F curve, automatically adjust the output voltage regulator (AVR), automatically adapt to the power grid fluctuations.
     Ultra-low noise, with the carrier immediately and carrier frequency is adjustable in two ways, the carrier frequency of 1kHz-15kHz adjustable.
     Real-time current, voltage detection system, combined with intelligent self-test and calibration technology to effectively prevent the system parameter drift. Make more timely and reliable control and protection, improve system stability.
     (2) The main function of the inverter wood engraving machine
     The main function of the inverter can be achieved;
     Built-in PI adjustment function enables closed loop control;
     485 control box can achieve remote control and PC control, can control 125 inverter synchronous operation.
     Linear, flat torque compensation polyline way to customize and can be adapted to a variety of load mode.
     Jog speed, multi-speed control, analog control, pulse given way to a variety of speed governor, coding speed, PC speed and so on;
     Current, voltage stall prevention;
     Two-wire, three-wire control of the terminal control mode is more flexible;
     Analog input voltage and current signals can be customized, and can achieve compound speed and single, dual-channel conversion.
     Has a preset frequency flashing display, especially when analog speed control, can be easily set before running the operating frequency;
     Inverter overload and motor overload protection and overload early warning function;
     Real-time output voltage (0 ~ 10V, 2 ~ 10V), current (0 ~ 20mA, 4 ~ 20mA) signal;
     Automatic voltage adjustment function ensures the inverter output rated voltage;
     Stationary state, stop the process of DC braking;
     (4) Wood engraving machine spindle Inverter installation environment requirements.
     The Inverter itself has high integration, compact overall structure itself features a large amount of heat, so the installation environment of temperature, humidity and dust content has certain requirements. Woodworking engraving machine users, wood dust generally occurs more, long attached to the Inverter above, cloudy and rainy and humid air once the maintenance is likely to cause the machine to stop jumping. So we Inverter installation environment to meet the following requirements:
     Adhere to the inverter internal air duct cleaning and dredging;
     Woodworking engraving machine processing effect, should adhere to the environment around the Inverter clean and dry. Do not place the debris in the vicinity of the inverter;
     After each maintenance Inverter, in order to minimize machine failure, I should be cleaned regularly and timely inverter, soot blowing.
     To carefully check whether the missing screws and wires, causing the Inverter to prevent small metal objects short circuit accident.
     When the temperature requirements of the work. Engraving machine electronic components inside the Inverter is powerful. Product General requirements for 055 ℃, but in order to ensure work safety, reliability, should be used to consider leeway, best controlled at below 40 ℃. Control box, engraving machine Inverter should be installed in the upper part of the box, and strictly comply with the product specification device requirements, and definitely not easy to heat the heating element or elements close to the bottom of the device engraving machine inverter.
     The temperature of the surrounding environment. Temperature is too high and the temperature change is large, the internal engraving machine inverter prone condensation, the insulation performance will be greatly reduced, and may even lead to a short circuit accident. When necessary, it is necessary to increase the drying agent and the heater in the tank. Between water, generally heavier than water vapor, if the temperature changes, then the problem would be more prominent.
     Corrosive gases should not be too thick. If the concentration of corrosive gas environment, it is not only corrosive components leads, printed circuit boards, etc., but also accelerate the aging of the plastic device, reduce the insulation performance.
     Prevent vibration and shock. When equipped with the inverter control cabinet engraving machine subject to mechanical vibration and shock, can cause poor electrical contact. Huaian thermoelectric on such a problem. Then in addition to improving the mechanical strength of the control cabinet, away from sources of vibration and shock sources, we must also use seismic rubber pad fixed outside the control cabinet and the electromagnetic switch vibrate like components. Equipment operation after a period of time, and should be checked and maintained
     Prevent electromagnetic interference. Engraving machine Inverter at work due to the rectifier and inverter, surrounded by a lot of electromagnetic interference occurs, these high-frequency electromagnetic waves in the vicinity of the instrument, the instrument has a certain degree of interference.
Therefore, the cabinet instrumentation and electronic systems, should use metal casing, shielding interference engraving machine inverter instrument. All components should be grounded connection, in addition to various electrical components, equipment and instrumentation should be used between the shielded control cable, and the shield should be grounded. If not disposed of electromagnetic interference, tend to make the whole system does not work, leading to the control unit malfunction or damage.