Electrical network stepper motor control device is a kind of uniform can declare the pulse signal of the electronic products, it announced that the signal after entering stepper motor drives, can by the drive into a stepper motor needs strong current signal, drive the stepper motor work. Stepper motor control device can accurately control the stepping motor turned every Angle, introduce us to the stepper motor under the present common problems and relevant solutions. A, how to control the direction of the stepper motor? Can change the direction of the control system level signal. Second, the connection of the motor can be adjusted to change direction, specific practices are as follows: on the two-phase motor, just put the one line communication access phase motor drives, such as A + and A -Communication. About three-phase motor, the adjacent two phase motor wire communication, such as: A, B, C three-phase, exchange A, B two phase can be three, step motor vibration is big, the noise is big, what reason be? Encountered this situation because stepper motor operation in vibration area, solution: 1, change the input signal frequency CP to avoid vibration area. 2, choose subdivision driver, reduce interval Angle, the work is smooth. 3, why stepper motor power, motor does not work? Four, there are several reasons will form the motor not turn: 1, overload locked-rotor (The motor is whistlers)2, 3 if motor in the offline state, if there is a pulse signal control system for stepper motor drives, wiring whether there is a question 4, step motor vibration, can work continuously, how to do? Encounter this situation, first of all, to check the motor winding and drives connecting any wrong check whether the input pulse signal frequency is too high, whether lifting frequency planning is not reasonable. 5, hybrid stepping motor drives offline signal FREE generally used under what conditions? When FREE for off-line signal low electricity at ordinary times, drive the output to the motor current is cut off, the motor rotor in a FREE state,Offline)。 In some automation equipment, if be in, drive continuous electrical requirements under the condition of direct drive motor shaft (Manually)Low signal, it can be FREE, the machine offline, manual operation or regulation. After done manually, then FREE signal is high, to continue to control automatically. 6, how to select step-motor drive power supply? Certain drive power supply voltage, and then conclude that homework current; The output of the power supply current is generally based on the drive current I decide that. If choose the linear power supply, power supply current generally desirable I 1. 1 ~ 1. 3 times; If choose switching power supply, power supply current generally desirable I 1. 5 ~ 2. 0 times. Five, how to select step-motor drive power supply voltage? Our company produce of stepper motor drive, wide voltage input, the input voltage large size can be selected; Power supply voltage is usually based on the operating speed of the motor and the response to a request to choose from. If the motor operation speed higher demand or response quickly, so the voltage value is high, but wary of the power supply voltage ripple cannot exceed the maximum input voltage of the drive, or you may damage the driver. If choose the low voltage step for mechanical and electrical machine works smoothly, little vibration. Six, the fine fraction of subdivision driver can represent accuracy? Segmentation is also called the micro step, primary intention is to weaken or eliminate the low-frequency vibration of the stepping motor, progressive motor work precision subdivision skills of a sideshow. Such as the stepping Angle of 1. 8°The two-phase hybrid stepping motor, if the fine fraction of subdivision driver set to 4, then the motor working resolution for each pulse 0. 45°, the accuracy of the motor can reach or close to zero. 45°, but also on other factors such as subdivision current control precision of the subdivision driver. Different manufacturers of subdivision drive accuracy may vary widely; The more difficult it is to fine grade, the greater the precision control. Seven, why stepper motor torque will vary with the increase of rotational speed down? When stepping motor rotation, the motor of each phase winding inductance will form a reverse electromotive force; The higher the frequency, the greater the back emf. Under the effect of it, the motor with frequency (Or speed)The phase current decreases, and then led to the decrease of the moment.
