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Stepper motor power

googer
Prodigy 70 points

Do you know what is the rated power of this stepper motor?

- i wish to drive it with a ti.com product

 

It is the 6V, 18.5 Ohms per winding (UBB1/5) type…….

 

http://www.auf-vertrieb.business.t-online.de/pdf/UBB.pdf

 

-the stepper has two windings.

 

Am I right in assuming that this stepper motor’s  rated power is  2 * V^2/R = 3.89W ?

 

 

If the rated power is indeed this figure of 3.89W, is it  ever permissible/adviseable to drive this stepper motor with a power higher than this rated value?

 

-If so , then for how long may I drive the stepper motor at  a power level which is higher than the motors rated power level?

  • 0
    TI__Guru**** 164956 points

    Googer,

    Your formula is correct for a half step, two coils energized.

    This is really a question for the motor's manufacturer, but I’ll give my opinion anyway.

    It is permissible but not advisable to overdrive the motor.

    If the excess was about 10% you could overdrive indefinitely. At double power, I could not say.

    Regards,
    Ron M.