MCDHT3520 Panasonic Panasonic Universal Packaging MCDHT3520 Panasonic price MCDHT3520 MCDHT3520 Zhang Gong 182 019 88 309 QQ 8788 56 087 servo drive Wikipedia card servo drive servo drive (servo drives), also known as "servo controller", "servo amplifier", is used to control a servo motor controller, and its role is similar to the role of ordinary AC motor drive is part of the servo system, mainly used in high-precision positioning systems. Typically by position, speed and torque are three ways to control the servo motor to achieve high-precision positioning transmission, drive technology is now high-end products. The basic principle of the directory applications require the parameters related to the difference between Controller Features Edit this section works mainstream servo drives are used in digital signal processor (DSP) as the control, servo drive (Figure 1) can achieve more complex control algorithms , digital, network and intelligent. Power devices widely used in intelligent power module (IPM) as the core design of the drive circuit, IPM integrated driver circuit, and has overvoltage, overcurrent, overheating, undervoltage protection circuit fault detection, also joined in the main loop of soft start circuit, to reduce the impact of the boot process to the drive. Power drive unit first phase full-bridge rectifier circuit through the three-phase electricity or mains input is rectified, the corresponding current. After a good three-phase rectifier or mains, and then through the three-phase sinusoidal PWM voltage source inverter frequency to drive the three-phase permanent magnet synchronous motors. The whole process of power drive unit can simply say that AC-DC-AC process. Rectifier unit (AC-DC) is the main circuit topology of three-phase full-bridge controlled rectifier circuit. With the large-scale application of the servo system, servo drives use servo drive commissioning, servo drive repair servo drives are more important in today's technical issues, more and more industrial technology service provider for servo drive technology deep-level research. Edit this paragraph the basic requirements of servo feeding system requirements 1, 2 wide speed range, high positioning accuracy 3, there is sufficient rigidity and high transmission speed stability 4, rapid response, no overshoot in order to ensure productivity and processing quality, In addition to requiring a higher positioning accuracy, the servo drive (Figure 2) [1] also requires a good fast response characteristics, which requires tracking response command signal to be fast, because the numerical control system at startup, braking, ask for an increase , minus the acceleration is large enough to shorten the transition time feeding system, reducing the contour transition errors. 5, low speed and high torque, strong overload capacity in general, servo drives have a few minutes or a half hour overload 1.5 times more in a short time can be 4-6 times overload without damage. 6, high reliability requirements of CNC machine tool feed drive system reliability, good stability, a strong temperature, humidity, vibration and other environmental adaptability and strong anti-jamming capability. Requirements for motor 1, from the lowest to the highest speed motor speed can be a smooth operation, torque ripple to be small, especially at low speeds, such as 0.1r / min or more at low speed, there is still a steady rate without creeping phenomenon. 2, the motor should have a large overload long time to meet the requirements of low speed high torque. General requirements DC servo motor overload in minutes 4 to 6 times without damage. 3, in order to meet the requirements of rapid response, the motor should have a small moment of inertia and large stall torque, and has a time constant as small as possible and start-up voltage. 4, the motor should be able to withstand the frequent start, brake and reverse. Edit this paragraph related parameter position proportional gain 1, set the position loop controller proportional gain; the larger 2, set the value of the gain, the greater the stiffness at the same frequency command pulse position lag smaller. But the value is too large may cause oscillation or overshoot; 3, the parameter value is determined by the specific type of servo systems and load conditions. Position feedforward gain a feedforward loop gain setting position; 2, the larger the set value, expressed in any of the command pulse frequency, the smaller the position lag; 3, position loop feedforward gain great control high-speed response characteristics of the system increased, but the location will make the system unstable, prone to oscillation; 4, does not require high response characteristics, this parameter is usually set to 0 indicates range: 0 to 100%. A speed proportional gain, set the speed regulator proportional gain; two, the greater the set value, the higher the gain, the greater stiffness. The value is determined based on the specific type of servo and load value situation. In general, the greater the load inertia, the greater the set value; 3, under the conditions of the system does not oscillate, try to set a larger value. An integration time constant speed, set the speed controller integral time constant; 2, set the value of the smaller, faster integration. The value is determined based on the specific type of servo and load conditions. In general, the greater the load inertia, the greater the set value; 3, under the conditions of the system does not oscillate, try to set a smaller value. Speed ??feedback filtering factor 1, set the speed feedback low-pass filter characteristics; 2, the greater the value, the lower the cutoff frequency, the smaller the noise generated by the motor. If the load inertia is large, you can decrease the value appropriately. Value is too large, resulting in slow response may cause oscillation; 3, the smaller the value, the higher the cutoff frequency, the quicker the response. If you need a high speed response, you can decrease the value appropriately. Setting a maximum output torque, the torque limit value is set inside the servo motor; 2, set value is the percentage of the rated torque; 3, at any time, this restriction is effective positioning complete range; 4, the set position control Positioning completed pulse range; 5, this parameter provides position control mode the drive to determine whether complete location basis, when the remaining number of pulses position deviation counter is less than or equal to this parameter setting, the drive think positioning is complete, place the switch signal is ON, otherwise OFF; 6, when the position control mode, the output location positioning complete signal, deceleration time constant; 7, set the value of the motor is from 0 ~ 2000r / min or acceleration time from 2000 ~ 0r / min of deceleration time; 8, acceleration and deceleration characteristic is linear speed of arrival range; 9, set the speed of arrival; 10, in a non-position control mode, if the motor speed exceeds this set value, the speed reaches the switch signal is ON, otherwise OFF ; 11, in the position control mode, without this parameter; 12, regardless of the direction of rotation. Edit this paragraph servo drive applications are widely used in the field of injection molding machines, textile machinery, packaging machinery, CNC machine tools and other areas. Edit Controller Features This section speed ratio of 1: 1500 Position control with zero speed lock overload 200 [%] - 300 [%] starting torque speed independent of load three closed-loop control Edit this paragraph: 5000 rpm than 0.3 related to the difference between a servo controller can be easily converted through automation interface module and fieldbus modules operate at the same time using different fieldbus modules implement different control modes (RS232, RS485, fiber, InterBus, ProfiBus), while GM relatively simple control of the inverter. 2, the servo controller is connected directly resolver or encoder, constitute velocity, displacement control loop. The general purpose inverter consisting only open-loop control system. The control targets (such as steady-state accuracy and dynamic performance, etc.) 3 servo controller is better than general-purpose inverters. [2] References 1. Servo drive (Figure 2) sources. 2. Servo controller. [Quote date 2013-01-28]. Open Category: Industrial controllers, drives, servo systems, industrial devices