Answers to questions about hybrid stepper motor drives. Stepper motor driver selection needs to be selected according to current voltage and other conditions; Servo motor drive, strict selection requirements.
Answers to questions about hybrid stepper motor drives
1. What is the difference between the series connection method and parallel connection method of four-phase hybrid stepper motor and drive?
Four-phase hybrid stepper motors are generally driven by two-phase drives, so the four-phase motor can be connected into two phases by series connection method or parallel connection method.
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The series connection method is generally used in the occasion of the motor speed, at this time the required drive output current is 0.7 times of the motor phase current, so the motor heating is small; the parallel connection method is generally used in the occasion of high motor speed (also known as high-speed connection), the required driver output current is 1.4 times the motor phase current, so the motor heats more.
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2. How to determine the DC power supply of the stepper motor driver?
A. Determination of voltage: The power supply voltage of the hybrid stepper motor driver is generally a wide range (such as the power supply voltage of IM483 is 12~48VDC), and the power supply voltage is usually selected according to the working speed and response requirements of the motor.
If the motor has a high working speed or fast response requirements, the voltage value is also high, but pay attention to the ripple of the power supply voltage cannot exceed the large input voltage of the driver, otherwise the driver may be damaged.
B. Determination of current: The power supply current is generally determined according to the output phase current I of the driver. If a linear power supply is used, the power supply current can generally be 1.1~1.3 times of I; if the switching power supply is used, the power supply current can generally be 1.5~2.0 times of I.
3. Under what circumstances is the offline signal FREE of hybrid stepper 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).
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In some automation equipment, if the motor shaft is required to be rotated directly (manual mode) when the drive is unpowered, the FREE signal can be set low, so that the motor is offline for manual operation or adjustment. After manual completion, set the FREE signal high to continue automatic control.
Under what circumstances is the offline signal FREE of hybrid stepper motor drives generally used?
When the offline signal FREE is low, the current output from the stepper motor driver to the motor is cut off, and the motor rotor is in a free state (offline state). In some automation equipment, if the motor shaft is required to be rotated directly (manual mode) when the drive is unpowered, the FREE signal can be set low, so that the motor is offline for manual operation or adjustment. After manual completion, set the FREE signal high to continue automatic control.
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How to choose the stepper motor driver power supply?
Determine the supply voltage of the stepper motor driver, and then determine the operating current; The supply supply current is generally determined based on the output phase current I of the driver. If a linear power supply is used, the power supply current can generally be 1.1~1.3 times of I; If switching power supply is used, the power supply current can generally be 1.5~2.0 times of I.
How to choose the stepper motor driver supply voltage?
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Stepper motor drivers, all are wide voltage input, input voltage wide range can be selected; The supply voltage is usually selected according to the operating speed and response requirements of the motor.
If the motor operating speed is high or the response requirement is fast, then the voltage value is also high, but pay attention to the ripple of the power supply voltage cannot exceed the maximum input voltage of the driver, otherwise the drive may be damaged. If you choose a lower voltage, it is conducive to the smooth operation of the stepper motor, and the vibration is small.
