The endless stainless steel wire rope is made of multiple fine steel wires, which are connected end to end
to form a closed loop. Mainly used to make annular Diamond Wire, widely used in
the cutting of superhard materials such as silicon ingots and precious stones.
What do you need to know about servo motors?
1. How to choose the servo motor and stepper motor correctly?
A: Mainly depending on the specific application, it is simple to determine: the nature of the load (such as horizontal or vertical load), torque, inertia, speed, accuracy, acceleration and deceleration requirements, upper control requirements (such as port interface And communication requirements), the main control method is the position, torque or speed mode. Whether the power supply is DC or AC, or battery powered, voltage range. This is used to determine the model of the motor and the associated drive or controller.
2. Choose a stepper motor or a servo motor system?
A: In fact, what kind of motor should be selected depends on the specific application, each has its own characteristics.
3. How to use a stepper motor driver?
A: According to the current of the motor, a driver with greater than or equal to this current is used. A subdivided drive can be used if low vibration or high precision is required. For high torque motors, use high voltage drives as much as possible to achieve good high speed performance.
What is the difference between 4.2 phase and 5-phase stepper motors? How to choose?
Answer: The 2-phase motor has low cost, but the vibration is high at low speed and the torque at high speed is fast. The 5-phase motor has less vibration and high-speed performance, which is 30~50% higher than that of the 2-phase motor. It can replace the servo motor in some occasions.
5. When is the DC servo system selected, what is the difference between it and AC servo?
A: DC servo motors are divided into brushed and brushless motors. The brush motor has low cost, simple structure, large starting torque, wide speed regulation range, easy control and maintenance, but convenient maintenance (replacement of carbon brushes), electromagnetic interference, and environmental requirements. It can therefore be used in cost-sensitive general industrial and residential applications. The brushless motor is small in size, light in weight, large in output, fast in response, high in speed, small in inertia, smooth in rotation and stable in torque. The control is complex, and it is easy to realize intelligence. The electronic commutation mode is flexible, and can be square wave commutation or sine wave commutation. The motor is maintenance-free, has high efficiency, low operating temperature, low electromagnetic radiation and long life, and can be used in various environments.
6. What should I pay attention to when using the motor?
A: Check the following before powering up:
1) Is the power supply voltage suitable (overvoltage is likely to cause damage to the drive module); the +/- polarity of the DC input must not be connected incorrectly, and the motor model or current setting value on the drive controller is appropriate (do not start at the beginning) Too big);
2) The control signal line is firmly connected, and the industrial site should preferably consider the shielding problem (such as using twisted pair);
3) Do not connect the wires that need to be connected at the beginning, only connect to the most basic system. After running well, connect them step by step.
4) Be sure to find out the grounding method, or use floating.
5) Closely observe the state of the motor within half an hour of starting operation, such as whether the motion is normal, sound and temperature rise, and immediately stop the adjustment after finding the problem.
7. Is it possible to supply the stepper and DC motor systems with a switching power supply?
A: Generally, it is best not to use a large torque motor unless you use a switch that is more than twice as large as the required power.
8. I want to use a DC voltage of ±10V or 4~20mA to control the stepper motor. Is it OK?
A: Yes, but additional conversion modules are required.
9. There is a servo motor with encoder feedback, can it be controlled by a servo drive with only a speedometer port?
A: Yes, you need to have an encoder to tachometer signal module.
10. Can the servo disc part of the servo motor be disassembled?
A: It is forbidden to disassemble, because the quartz plate in the code wheel is easy to break, and after entering the dust, the life and accuracy will not be guaranteed, and professional maintenance is required.
11. Can the stepper and servo motor be disassembled for repair or modification?
A: No, it is best to let the manufacturer do it. After the disassembly, there is no professional equipment and it is difficult to install it back to the original. The gap between the stator and the stator of the motor cannot be guaranteed. The performance of the magnetic steel material is destroyed, and even the loss of magnetism, the motor torque is greatly reduced.
12. Why can't the reducer match the motor exactly at the standard torque point?
A: If you consider the maximum continuous torque generated by the motor through the reducer, many reduction ratios will far exceed the torque level of the reducer. If we are designing each reducer to match the full torque, there will be too many combinations of internal gears (larger, more material). This will make the product price high and violate the "high performance, small size" principle of the product.
13. What kind of work can I choose for a servo drive?
A: Different modes are not all present in all models of drives.
----- Editor-in-Chief: Dalan Oil Pump Motor 02-Procurement Consultant
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