7. When the stepping motor starts running, sometimes it will not move or move back and forth in the same place. Sometimes it will lose the step when running. What is the problem?
Generally consider the following aspects for inspection:
1) Whether the motor torque is large enough to drive the load, so we generally recommend that the motor should use a motor with a torque greater than 50%~100% than the actual one, because the stepper motor can't be overloaded, even if it is instantaneous. Causes a loss of step, a serious stop or irregular movement.
2) Whether the current of the input walking pulse from the upper controller is large enough (generally >10mA), so that the optocoupler is stably turned on, and the input frequency is too high, resulting in no receiving, if the output circuit of the upper controller For CMOS circuits, CMOS input drivers are also required.
3) Whether the starting frequency is too high, whether the acceleration process is set on the startup program, it is better to start the acceleration from the starting frequency specified by the motor to the set frequency. Even if the acceleration time is short, it may be unstable or even in a passive state. .
4) When the motor is not fixed, this condition sometimes occurs, which is normal. Because, in fact, a strong resonance of the motor is caused at this time, resulting in an out-of-synchronization state. The motor must be fixed.
5) For 5-phase motors, the phase is incorrectly connected and the motor does not work.
8. I want to directly control the servo motor by means of communication, can I?
Yes, it is more convenient, just a speed issue, for applications that require less response speed. If fast response control parameters are required, it is best to use a servo motion control card. Generally, it has a DSP and high-speed logic processing circuit to achieve high-speed and high-precision motion control. Such as S acceleration, multi-axis interpolation and so on.
9. Is it good to supply the stepping and DC motor system with a switching power supply?
Generally, it is best not to use a large torque motor, unless a switching power supply that is more than twice as large as the required power is used. Because the motor works as a large inductive load, it will form an instantaneous high voltage on the power supply end. The overload performance of the switching power supply is not good, it will protect the shutdown, and its precision voltage regulation performance is not needed, and sometimes it may cause damage to the switching power supply and the driver. A DC power supply that can be transformed with a conventional toroidal or R-type transformer.
10. I want to use a DC voltage of ±10V or 4~20mA to control the stepper motor. Is it OK?
Yes, but additional conversion modules are required.
11. There is a servo motor with encoder feedback. Can it be controlled by a servo drive with only a speedometer port?
Yes, you need to have an encoder to tachometer signal module.
12. Can the servo motor's code disc part be disassembled?
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.
13. Can the stepper and servo motor be disassembled for repair or modification?
No, it is best to let the manufacturer do it. After disassembling, 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.
14. Can the servo controller sense changes in external load?
Stop, return or maintain a certain thrust follow-up if you encounter set resistance.
15. Can I use a domestic drive or motor with a foreign high-quality motor or driver?
In principle, it is ok, but it is necessary to understand the technical parameters of the motor before it can be used. Otherwise, it will greatly reduce the effect and even affect the long-term operation and longevity. It is best to consult with the supplier before deciding.
