Source：Industry News Release time：2022-03-08 Clicks： Popular：Reduction motor manufacturer
Indicator terms for stepper motors
1. Step angle accuracy: the error between the actual value and the theoretical value of the step angle each time the stepper motor rotates. Expressed in percentage: error/step angle*100%.
2. Out of step: The number of steps when the motor is running is not equal to the theoretical number of steps.
3. Declination angle: the declination angle between the rotor gear axis and the stator gear axis. The motor must have a deflection angle during operation.
4. Maximum no-load starting frequency: the maximum frequency at which the motor can be started directly without load under a certain drive form, voltage and rated current.
5. Maximum no-load operating frequency: the maximum speed frequency of the motor under no-load under a certain drive form, voltage and rated current.
6. Operating torque-frequency characteristics: The relationship curve between output torque and frequency during motor operation measured under certain test conditions is called operating torque-frequency characteristics. It is the most important one among the many dynamic curves of the motor. , which is also the fundamental basis for motor selection. Other characteristics include inertial frequency characteristics, starting frequency characteristics, etc. Once a motor is selected, the static torque of the motor is determined, but the dynamic torque is not determined.
7. Resonance point of the motor: The stepper motor has a fixed resonance area. The resonant area of the two-phase four-phase inductance type is generally between 180-250pps (step angle 1.8 degrees) or about 400pps (step angle 0.9 degrees). The higher the motor drive voltage, the greater the current of the motor, and the lighter the load. The smaller the volume, the resonant zone will shift upward and vice versa.
8. Motor forward and reverse rotation control: When the motor winding power-on sequence is AB-BC-CD-DA, it is forward rotation, and when the power-on sequence is DA-CD-BC-AB, it is reverse rotation.
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