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Preventing Step Losses in Stepper Motors

Step losses are a cause of concern with stepper motors but this can be corrected or prevented in most circumstances.

When a stepping motor does not operate correctly, the common conclusion is that either the motor or the drive electronics are faulty. The motor selection and the choice of the driver are critical. However, other factors also contribute to step losses. The following points are important to examine for the analysis of step losses or non-operation in a methodical fashion across a variety of applications:

A. Stepper Motor Selection
B. Motion profile
B1. Start-Stop operation
B2. Trapezoidal profile
C. External commutation errors
D. External events
D1. Back driving
D2. Increase of the pay load over time

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