After all, PLC is just a brain, and automation equipment really needs hands and feet to work, so servo motors appear. By installing special mechanical parts on the rotor of servo motor, it can start working under the command of PLC.

The leftmost part of the above picture is the servo motor, and the protruding part is the rotor of the motor. Different mechanical parts need to be installed on the rotor according to the specific working scene, so as to perform various actions under the circular motion of the rotor, such as how long it takes, repeated positioning, acceleration and deceleration, or two motor-driven mechanical parts move together.

As an electrical automation engineer, there are usually two kinds of projects: one is motion control, which is usually used in the mechanical field; The other is process control, which is usually used in chemical industry. Motion control refers to a servo system originated in the early days, which controls the changes of physical quantities such as angular displacement, torque and rotation speed of objects by controlling motors.

Usually, our main concern is to control one or more parameters of torque, speed and position of a single motor to a given value. Complex motion control mainly focuses on coordinating multiple motors to complete the specified motion (synthetic trajectory and synthetic velocity), and pays more attention to trajectory planning, velocity planning and kinematic transformation; For example, XYZ axis motor should coordinate interpolation in CNC machine tools.

So we learn to control servo motors, starting with controlling a single servo motor, then learning to control multiple motors at the same time, and finally learning how to make these motors work together to complete the work.

Getting started advice

Learning servo motor control, it is best to have servo driver+servo motor, and it takes 700 to 800 yuan on a certain treasure. In addition, from the point of view of learning PLC to control motor operation (you can write various PLC control instructions, understand the meaning of these instructions and use them skillfully), you can use a stepping motor+ball screw in the learning stage, as long as it is 200 yuan or 300 yuan, and the hardware cost is extremely low.

Don't just look at the picture. Although sparrows are small and complete, they are all the same in essence. In the process of learning, find an OK book or a better video course, and practice all the knowledge points of motion control with the teacher, and you will certainly understand the mystery. At the same time, the teacher will teach you many details and precautions, which will get twice the result with half the effort, so that you will not be discouraged and eventually give up.

It is strongly recommended to explain the process object of Siemens 1200 motion control axis in detail.

In order to help more graduates of related majors and people who have been engaged in electrical maintenance and equipment installation and debugging for many years master the relevant skills of Siemens 1200 motion control and successfully enter the positions of electrical engineers and automation engineers, Zhao, a senior electrical engineer of Jiatu Automation Training College (10 working experience) and his team brought S7- 1200 representative: Siemens 65430.

Let's take a look at the outline of this course and find out what the lecturer mainly takes you to learn and do.

The first chapter motion control principle

1. 1 Siemens1200 the essential object course of PLC axis process.

1.2 What is the so-called motion control and how can I learn it well?

1.3 Motion control sounds very tall. What is the typical application scenario?

Chapter II Description of Motion Control Mode

2. 1 introduction of servo control system

2.2 Introduction of Motion Control Mode

2.3 Auto trunk electric strut automatic assembly line motion control actual combat-1

2.4 Automobile trunk electric strut automatic assembly line motion control actual combat -2

The third chapter uses S7- 1200PLC to realize servo positioning control.

3. Detailed explanation of1PTO mode configuration and shaft configuration.

3.2 Full closed-loop configuration and shaft configuration of analog drive interface

3.3 PROFIdrive Mode Configuration and Axis Configuration

3.4 S7- 1200 Description of Common Instructions for Motion Control

3.5 S7- 1200 Instructions for Changing Motion Control Configuration

3.6 S7- 1200 Motion Control Command Table

3.7 S7- 1200 Motion control returns to the original point

The fourth chapter realizes the control of Mitsubishi servo motor through S7- 1200PLC.

4. 1 servo driver wiring and parameter setting

4.2 Teach you how to write programs, and you will learn.

4.3 Explain the function of shaft debugging and diagnosis, which is an important function.

4.4 program debugging, deepen the impression and gain experience in debugging.

4.5 S7- 1200 Frequently Asked Questions of Motion Control (even experts may make mistakes)

Let's take a look at how motion control is accomplished in a real project. As can be seen from the figure, there is a PLC plus three expansion modules on the right. Two servo drivers are connected to PLC, and the servo motor is installed in a specific workstation. In other words, the two servo drivers (and the supporting servo motors) controlled by 1 PLC in this electric control cabinet are moving mechanically. Maybe in which food production line do you make packaged biscuits?

The course offers free trial chapters. You can leave a message or register in official website to get a trial chapter to learn more about the course.

The main author of this course introduces:

Zhao, an expert of Siemens electrical engineer, a front-line technical engineer and automation expert in the field of automobile/auto parts, has rich industry experience. Eight years experience as an electrical engineer, long-term engaged in the research and development of non-standard automation equipment in the direction of automobile complete machine/automobile spare parts, with many equipment motion controls, many servo applications, various control methods and rich experience and skills.

Interactive time of Jiatu Institute of Automation

Based on Siemens S7- 1200 products, V90 servo and Siemens touch screen, it is widely used in various industries. Can you tell me what applications they have? Welcome to leave a message in the comments section. For wonderful messages, I can choose a course in Jiatu Automation College and send it out for free.