Servo Drive Selection Steps

Fanuc servo drive is a kind of controller used to control servo motor. Its function is similar to that of frequency converter acting on ordinary AC motor. It is a part of servo system and is mainly used in high-precision positioning system. Generally, the servo motor is controlled by three methods of position, speed and torque to achieve high-precision transmission system positioning. It is a high-end product of transmission technology. Fanuc AC servo drives are an important part of modern motion control and are widely used in automation equipment such as industrial robots and CNC machining centers. In particular, fanuc power servo drives used to control AC permanent magnet synchronous motors have become a research hotspot at home and abroad. But without understanding, it may be difficult to choose a suitable servo drive.

Steps to Select a Servo Drive

The selection steps are roughly as follows.

1. Demand Analysis

You should determine the speed, torque, speed accuracy or positioning accuracy, installation size, whether a closed loop is required, and cost.

2. Select the Motor

First determine the Fanuc motor type, and then select the motor according to the speed, torque, and installation size.

3. Select Feedback Element

According to whether a closed loop is required, you need to decide whether to use feedback components, such as encoders, tachometers, resolvers, etc. And then you can choose the type and parameter of feedback element according to speed accuracy or positioning accuracy.

4. Select the Drive

The driver is selected according to the motor power and the above comprehensive factors.

When selecting a Fanuc DC servo drive, you should not only match with the motor, but also consider the control method. It is also very important to choose the control method that suits your own fanuc controller. It mainly depends on the specific application. Simply put, it is necessary to determine whether the nature of the load is horizontal or vertical load, torque, inertia, speed, accuracy, acceleration and deceleration., And you need to consider the upper control requirements and the control mode, whether it is position, torque or speed mode. Based on this, you can determine the model of the mitsubishi motors and the matched mitsubishi motor drive or controller.

There are many technical data you need to know to choose a suitable servo motor system. Mainly include the following content.

The torque range is generally small and medium torque, below 20Nm. The speed range is generally relatively low, below 2000PRM, the high speed range is above 5000PRM, and the DC servo motor can reach 10,000 to 20,000 PRM. The most important control method is position control. There is also smoothness, which is mainly to observe whether there is vibration at low speed. In addition, the accuracy is generally low, and the accuracy of the subdivision drive is high. In addition, it is also necessary to pay attention to the torque-frequency characteristics, as the torque drops quickly at high speeds. In addition, the overload characteristics also need to be paid attention to. Normal servo drives can be overloaded by 3 to 10 times. In addition to the above, there are feedback methods, encoder types, response speed, vibration resistance, temperature rise, easy maintenance, and price that need considering.