For servo drivers, the maximum pulse frequency (differential input) that can be received is 500kHz, while the collector input is 200kHz. The torque output of the motor is determined by the load; the larger the load, the greater the torque output, but it must not exceed the motor's rated load. Sudden acceleration/deceleration or overload causing overcurrent in the main circuit can affect power devices. Therefore, servo amplifiers are equipped with clamping circuits to limit the output torque. The torque limit can be adjusted via analog signals or parameter settings. Today, we'll share the parameter setting methods for servo motor drivers.
1. Position Proportional Gain Setting: Sets the proportional gain of the position loop adjuster. A higher setting value results in higher gain, greater stiffness, and smaller position hysteresis under the same frequency command pulse conditions. However, excessively high values may cause oscillation or overshoot. The parameter value is determined by the specific servo system model and load conditions.
2. Position feedforward gain setting: The feedforward gain of the position loop is set. The larger the setting value, the smaller the position lag under any command pulse frequency. A large feedforward gain of the position loop improves the high-speed response characteristics of the control system, but it will make the position of the system unstable and prone to oscillation. When a high response characteristic is not required, this parameter is usually set to 0. The range is 0~100%.
3. Speed Proportional Gain Setting: Set the proportional gain of the speed regulator; a higher value results in higher gain and greater stiffness. The parameter value is determined based on the specific servo drive system model and load conditions. Generally, the larger the load inertia, the larger the setting value; set a larger value if the system does not oscillate.
