11. There is a servo motor with encoder feedback, can it be controlled by a servo driver with only a tachometer port?
Yes, it needs to be equipped with an encoder to tachometer signal module.
12. Can the encoder part of the servo motor be disassembled?
It is forbidden to disassemble, because the quartz plate in the code disc is easily broken, and after entering the dust, the life and accuracy will not be guaranteed, and professional maintenance is required.
13. Can stepper and servo motors be disassembled for maintenance or modification?
No, it is best to let the manufacturer do it. After disassembly, it is difficult to install it back to its original state without professional equipment, and the gap between the rotor and stator of the motor is not guaranteed. The performance of the magnetic steel material is destroyed, even causing loss of magnetism, and the motor torque is greatly reduced.
14. Can the servo controller sense the change of external load?
If you encounter the set resistance, stop, return or keep a certain thrust to follow up.
15. Can domestic drivers or motors be used with foreign high-quality motors or drivers?
In principle, it is possible, but the technical parameters of the motor can be used before it can be used. Otherwise, the due effect will be greatly reduced, and even long-term operation and life will be affected. It is best to consult with the supplier before deciding.
16. Is it safe to use a DC power voltage greater than the rated voltage to drive the motor?
Normally this is not a problem as long as the motor is running within the set speed and current limits. Because the motor speed is proportional to the motor line voltage, selecting a certain supply voltage will not cause overspeed, but failures such as the drive may occur.
In addition, it must be ensured that the motor meets the minimum inductance requirements of the drive and that the current limit set is less than or equal to the rated current of the motor.
In fact, it's nice if you can make the motor run slower (below rated voltage) in your design.
Running at lower voltage (and therefore lower speed) results in less brush run bounce, less brush/commutator wear, lower current draw and longer motor life.
On the other hand, if the performance requirements of the motor size require additional torque and speed, it is possible to overdrive the motor, but at the expense of product life.
17. How to choose the appropriate power supply for the application?
It is recommended to select a power supply voltage value that is 10%-50% higher than the maximum required voltage. This percentage varies with Kt, Ke, and voltage drop within the system. The current value of the driver should be sufficient to deliver the energy required by the application. Remember that the output voltage value of the driver is not the same as the supply voltage, so the output current of the driver is not the same as the input current. To determine the proper supply current, calculate all power requirements for this application and add another 5%. The required current value can be obtained by calculating the formula I = P/V.
It is recommended to select a power supply voltage value that is 10%-50% higher than the maximum required voltage. This percentage varies with Kt, Ke, and voltage drop within the system. The current value of the driver should be sufficient to deliver the energy required by the application. Remember that the output voltage value of the driver is not the same as the supply voltage, so the output current of the driver is not the same as the input current. To determine the proper supply current, calculate all power requirements for this application and add another 5%. The required current value can be obtained by calculating the formula I = P/V.
18. Which working mode can I choose for the servo drive?
Different modes are not all present in all models of drives
19. How to ground the drive and system?
a. If there is no isolation between the AC power supply and the DC bus of the drive (such as a transformer), do not connect the non-isolated port of the DC bus or the ground of the non-isolated signal to the ground, which may cause equipment damage and personal injury. Because the AC common voltage is not to the ground, there may be a high voltage between the DC bus ground and the ground.
b. In most servo systems, all common grounds and grounds are connected together at the signal end. The ground loops created by the various ways of connecting the earth are susceptible to noise and flow at different reference points.
c. In order to keep the command reference voltage constant, connect the signal ground of the driver to the signal ground of the controller. It will also be connected to the ground of the external power supply, which will affect the work of the controller and driver (eg: 5V power supply of the encoder).
d. It is more difficult to ground the shielding layer, and there are several methods. The correct shield ground is at the reference potential point inside its circuit. This point depends on whether the noise source and receiver are grounded at the same time, or floating. Make sure that the shield is grounded at the same point so that ground current does not flow through the shield.
20. Why can't the reducer be exactly matched with the motor at the standard torque point?
Many reduction ratios far exceed the torque rating of the reducer if the maximum continuous torque produced by the motor through the reducer is taken into account.
If we were to design each reducer to match full torque, there would be too many combinations of gears inside the reducer (larger volume and more material).
This will make the price of the product high and violate the "high performance, small size" principle of the product.
21. How to choose a planetary reducer or a spur gear reducer?
Planetary reducers are generally used when high torque is required in a limited space, that is, small volume and large torque, and its reliability and life are better than spur gear reducers. Spur gear reducers are used for lower current consumption, low noise and high efficiency and low cost applications.
22. What is the load rate?
The duty cycle is the ratio of the working time / (working time + non-working time) of the motor in each working cycle. If the load factor is low, the motor is allowed to run at 3 times the continuous current for a short period of time, thereby producing more power than the rated continuous operation.
23. Can the drive circuit of a standard rotary motor be used for a linear motor?
Generally it is possible. You can think of linear motors as rotary motors, such as linear stepper motors, brushed, brushless, and AC linear motors. Please consult the supplier for details.
24. Can the linear motor be installed vertically and move up and down?
Can. According to the user's requirements, we can install the balance device of the mover slider or install the guide rail brake for vertical installation.
25. Can multiple movers be installed on the same platform?
Can. As long as several movers do not interfere with each other.
26. Can the mover coils of multiple brushless motors be installed on the same magnetic track?
Can. As long as several movers do not interfere with each other.
27. What are the advantages of using a linear motor over a linear motor with a ball screw?
Since there is no mechanical connection between the stator and the mover, the problems of backlash, wear, and jamming are eliminated, and the movement is smoother. It highlights the characteristics of higher precision, high speed, high acceleration, fast response, smooth motion, high control precision, good reliability, compact size, low profile height, long life and maintenance-free.
