First, how to control the direction of the stepper motor?

         1. You can change the direction level signal of the control system.

         2, you can adjust the wiring of the motor to change the direction, as follows:

         For two-phase motors, simply swap one of the motor wires into the driver, such as A+ and A-switch.

         For three-phase motors, we will exchange the motor lines of two adjacent phases such as: A, B, C three-phase, exchange A, B two phases.

Second, the stepper motor has large vibration and great noise. What is the reason?

         This situation is encountered because the stepper motor works in the oscillation zone, the solution:

         1. Change the input signal frequency CP to avoid the oscillation zone.

         2, Use the subdivision drivers so that the step angle is reduced, the operation is smoother.

         3. Why does the motor not run after the stepper motor is energized?

There are several reasons why the motor does not turn:

         1. The overload is blocked (the motor has a howling sound at this time)

         2. Is the motor offline?

         3. Does the control system have a pulse signal to the stepper motor driver, and whether there is a problem with the wiring.

Fourth, the stepper motor is shaking without running continuously, what should be done?

In this case, first check whether the winding of the motor is connected to the driver.

         Check if the frequency of the input pulse signal is too high, and whether the design of the lifting frequency is unreasonable.

Five, Under what circumstances is the offline signal FREE of the hybrid stepping motor driver generally used?

         When the offline signal FREE is low, the current output from the driver to the motor is cut off, and the motor rotor is in a free state (offline state). In some automation equipment, if the drive is not powered

         By directly turning the motor shaft (manual mode), the FREE signal can be set low, the motor can be taken offline, and manually operated or adjusted. After manual completion, set the FREE signal high to continue automatic control.

Sixth, how to choose the stepper motor driver power supply?

         Determine the supply voltage of the driver, and then determine the operating current; the supply current is        generally determined by the output phase current I of the driver. If a linear power supply is taken, the power supply current can generally take 1.1 to 1.3 times of I; if a switching power supply is taken, the power supply current can generally take 1.5 to 2.0 times that of I.

Seven, how to choose the stepper motor driver supply voltage?

         The stepping motor driver produced by our company is wide-voltage input. The range of input voltage can be selected. The power supply voltage is usually selected according to the working speed and response requirements of the motor. If the motor has a higher operation speed or a faster response, the voltage is higher, but the ripple of the supply voltage cannot exceed the maximum input voltage of the driver, otherwise the driver may be damaged. If the lower voltage is selected, it is beneficial to the smooth running of the stepper motor with small vibration.

Eigth, can the subdivision of the subdivision driver represent the accuracy?

         The subdivision is also called microstep, whose main purpose is to reduce or eliminate the low frequency vibration of the stepper motor. Improving the running accuracy of the motor is only a supplementary function of the subdivision technology. For example, for a two-phase hybrid stepping motor with a step angle of 1.8, if the subdivision number of the subdivision driver is set to 4, then the motor's operating resolution is 0.45 per pulse, and the accuracy of the motor can be reached or approached 0.45, ゚ which also depends on other factors such as the subdivision current control accuracy of the subdivision driver. The accuracy of subdivision drivers from different manufacturers may vary greatly; the larger the number of subdivisions, the more difficult it is to control the driver.

Night, Why does the torque of the stepper motor decrease with the increase of the rotational speed?

         When the stepper motor rotates, the inductance of each phase winding of the motor will form a back electromotive force; the higher the frequency, the larger the back electromotive force. Under its action, the motor decreases with increasing frequency (or speed), resulting in a drop in torque.