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The information presented in this cross reference is based on TOSHIBA's selection criteria and should be treated as a suggestion only. Please carefully review the latest versions of all relevant information on the TOSHIBA products, including without limitation data sheets and validate all operating parameters of the TOSHIBA products to ensure that the suggested TOSHIBA products are truly compatible with your design and application.
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Step Angle

Step angle

The step angle is the basis of the movement of a stepping motor.
The step angle depends on the total number of magnetic poles of the motor.
The step angle is determined by the formula:

Step angle = 360 degrees / N  where N = (NPH x PH)

  • NPH: Number of magnetic poles for each phase
  • PH: Number of phases
  • N: Total number of magnetic poles in all phases

The motor types are usually referenced as “PH-phase / N-pole motor” (e.g. 2-phase / 4-pole on the left side and 3-phase / 6-pole on the right side)

Step angle

For example, in case of a 2-phase 4-pole motor, the step angle will be 90 degrees.

The stepping motor is rotated as a result of performing each step operation continuously.

Chapter 3 Operating Principle of Stepping Motor

Operation Image
Step Operation
Magnetic Pole of the Stator
Motor Current and Rotor Rotation
Excitation Mode
Excitation Mode: Full Step
Excitation Mode: Half Step
Excitation Mode: Micro Step
Summary of Excitation Modes
2-Phase 4-Pole Motor
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