From the perspective of the protection response speed of the robot servo drive, Estun has a small amount of calculation in the form of torque, and the response to the control signal of the drive is fast. The azimuth form has a large amount of computation, and the response to the driver's control signal is slow.
1. If there are relatively high requirements for dynamic functions in motion, the motor needs to be adjusted in real time. When the manipulator itself is slow (e.g., PLC, or low-end motion manipulator), it is controlled by the azimuth method. When the manipulator is relatively fast, the azimuth ring can be moved from the driver to the manipulator by the speed method to reduce the workload of the driver (e.g., most medium-motion manipulators; If there is a better upper stage controller, it can be operated with torque, or the speed ring can be removed from the drive. This can only be done with dedicated controllers. Otherwise, there is no need to use a servo motor.
2. Torque control: The torque control method sets the size of the external output torque of the motor shaft through the input or direct address of the additional external analog quantity, in detail, for example, 10V corresponds to 5Nm, and when the external analog quantity is set to 5V, the motor shaft output such as the motor shaft rotates forward when the load of the motor shaft is low, the motor does not rotate when the external load is constant, and the motor reverses when it is large (generally generated when there is a gravity load). By immediately changing the setting of the analog quantity, it is possible to change the size of the set torque, or to change the value of the corresponding address through the robot protection communication method.
The use is mainly in the surrounding and surrounding devices that have strict requirements for the bearing capacity of raw materials, such as wired devices or optical fiber equipment, and the setting of torque changes the protection of the robot at any time according to the change of the surrounding radius, so as to ensure that the bearing capacity of raw materials will not change with the change of the surrounding radius.
3. Azimuth control: There is also a servo in the form of azimuth control, which generally determines the size of the rotation speed according to the frequency of the pulse input from the outside, and determines the rotation viewpoint according to the number of pulses, and assigns values to the direct speed and displacement through the communication method. Because the azimuth form can strictly control the speed and azimuth, it is generally used in positioning devices.
Digitally controlled machine tools, printing machinery and other fields of use.
4. Speed form: the rotation speed can be controlled by the frequency of analog input or pulse, and in the case of PID control of the outer wheel of the upper control device, it can be positioned even in the form of speed, but the azimuth signal of the servo motor or the azimuth signal of the direct load must be reflected to the upper position and used for calculation. The azimuth form also supports the direct load outer ring to detect the azimuth signal, at this moment the encoder at the motor shaft end only detects the number of motor rotations, and the azimuth signal is provided by the detection device at the direct load end. The advantage of this is that the Estun robot protects the error in the descent center drive and increases the positioning accuracy of the system as a whole.
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Estun Servo Motor - How to Select Servo Motor (11-15)
11. There is a servo motor with encoder feedback, can it be controlled by a servo drive with only a tachometer port?
Yes, it is necessary to have an encoder-to-speed signal module.
12. Can the code disc part of the servo motor be disassembled?
It is forbidden to disassemble it, because the inside of the disc ...
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Estun Robotics FAQs
Estun Robotics FAQs.
After turning over the main switch of the control cabinet, there is no power, the cause analysis and treatment methods:
Please check whether the power supply line of the electric control cabinet is correct;
Please check whether the external power supply voltage meets the type of three-phase AC380V power supply robot
Please acknowledge that the cabinet is broken...
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FAQs about Estun servo motor (7-10)
7. The relationship between the model code parameters and the servo motor
The motor model in the model code parameter of the EDB series servo motor should be the motor model currently controlled, otherwise the operation effect of the motor will be poor. The motor model selection parameter is PN218, and the drive model parameter selection is PN ...
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Estun servo motor - the cause and solution of fast jitter of servo motor
Servo motor refers to the engine that controls the operation of mechanical components in the servo system, and is a kind of auxiliary motor indirect transmission device. The main function is to use it in a closed ring, transmit the signal to the system at any time, and at the same time correct its own operation with the signal given by the system.
Servo motor ...
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Estun servo – the difference between servo motor and ordinary motor
There are many types of motors, and the ordinary motor we commonly use is the induction motor, although it and the servo motor are both motors, there are certain differences:
1. The speed of ordinary motors is too fast, the torque is too small, and because there is no feedback from itself, it is usually impossible to achieve accurate control.
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Estun Automation has reached a strategic cooperation with Beizi Institute
On March 11, Nanjing Estun Automation Co., Ltd. (hereinafter referred to as Estun) and Beijing Machinery Industry Automation Research Institute Co., Ltd. (hereinafter referred to as Beijing Institute of Automation) joined forces and reached a strategic cooperation agreement. Wang Zhenlin, Secretary of the Party Committee and Chairman of the Beijing Autonomous Institute, Estun Automatic ...
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Full analysis of Estun server alarm code
Estun Server Alarm A.01 Parameter Broken
Estun server alarm A.02 A/D is damaged
Estun Server Alarm A.03 Overspeeding
Estun server alarm A.04 Overload
Estun Server Alarm A.05 Position Deviation Counter Overflow
Ace...
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Estun servo motor - the structural composition of the servo control system
A servo control system is a feedback control system that is used to accurately follow or reproduce a process. In many cases, the servo system refers specifically to the feedback control system in which the controlled quantity (the output of the system) is the mechanical displacement or displacement velocity and acceleration, and its function is to make the mechanical displacement of the output (or ...
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Estun servo motor - the role and classification of servo system
Main role
The main functions of the servo system include the control of the output shaft located in the distance by the input shaft in the absence of mechanical connection, so as to realize long-distance synchronous transmission; Enables the output mechanical displacement to accurately track electrical signals, such as recording and indicating instruments, etc.; Go to the low power command signal ...
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Estun servo motor – three modes of servo control
The speed control and torque control of the servo motor are controlled by analog quantity, and the position control is controlled by generating pulses. The specific control method to use should be selected according to the customer's requirements and what kind of motion function is satisfied.
Generally, there are three control modes for servo: speed control ...
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How to disassemble the five or six axes of Estun robot?
1. Open the shell of the robot to expose the motor base.
2. Use a screwdriver or wrench to remove the screws on the motor base.
3. Remove the screws, lift the motor base, and disassemble it from the robot.
4. The motor base is tightly connected with the robot, and tools such as wrenches are used.
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Estun servo drive alarm code analysis
Estun Server Alarm A.01 Parameter Broken
Estun server alarm A.02 A/D is damaged
Estun Server Alarm A.03 Overspeeding
Estun server alarm A.04 Overload
Estun Server Alarm A.05 Position Deviation Counter Overflow
Ace...
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Estun servo motor - speed regulation and shutdown of DC motor
Speed regulation of DC motors
Constant power weak magnetic upward speed regulation, the magnetic field governor can be adjusted until the speed reaches the required value, but shall not exceed the maximum speed allowed by the technical conditions. Constant torque loads can be slowed down by step-down or armature string resistors.
Downtime of the DC motor
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Estun servo drive - common faults and maintenance of servo drives
Servo drive is a kind of controller used to control servo motor, its role is similar to the inverter to ordinary AC motor, as a precision equipment, it will inevitably have some faults in the process of use, common faults and maintenance methods are as follows:
1. When the motor rotates, the LED light ...
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Experts from the Industry and Information Think Tank Alliance visited Estun Automation
On September 25, 2020, a group of 20 people from the Industry and Information Think Tank Alliance, led by Comrade Fan Bin, Deputy Director of the Department of Political and Legal Affairs of the Ministry of Industry and Information Technology, visited Estun Company for research. Dr. Wang Jiegao, President of Estun Automated Robot Research Institute, and Ms. Yuan Qin, Deputy General Manager, accompanied the visit and investigation. The experts visited ...
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The reason for the servo drive alarm A04 and its handling method
Alarm code A04 refers to:
Alarm mechanism: The overload rate of the drive accumulates to a certain threshold and triggers an alarm.
Causes:
1. Servo motor brake control circuit problem;
2. Robot power cable problem;
3. The drive parameter setting is wrong;
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Estun Servo Motor – The difference between a servo motor and a stepper motor
1. Different ways of control
Stepper motor: The rotation angle is controlled by controlling the number of pulses, and one pulse corresponds to a step angle.
Servo motor: The angle of rotation is controlled by controlling the length of the pulse time.
2. The workflow is different
Stepper motor ...
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Estun servo motor - the cause and solution of servo motor overload
Problem 1: The reason why the servo motor alarms the overload
If the drive resistance is too great, check the drive system.
Q2: What is the difference between stepper motor and servo motor overload capacity?
Question 3: Is the servo motor overload necessarily related to the current?
As the motor torque output ...
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Estun Robotics – Battery Replacement Steps for Industrial Robots
The position data of each axis of the industrial robot is stored through a backup battery, which should be replaced regularly (one and a half years). In addition, if the backup battery shows a voltage drop alarm, the battery should also be replaced in time.
1. Replace the controller motherboard battery
Program and system variables are stored in the main ...
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Estun Servo Motors – Encoder FAQs
1. Q: What are the precautions for the selection of incremental rotary encoders?
There are three parameters that should be noted:
1. Mechanical installation dimensions, including positioning stops, shaft diameters, and mounting holes; cable outlet mode; installation space volume; Whether the protection level of the working environment meets the requirements.
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