Motion Control and Motor Drives

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The inductance of motor is below driver inductance range. What are my options?

I am trying to configure an old NEMA 11 stepper motor with a new driver (P70530). When I try to configure the motor in the motor file editor of the driver GUI I keep getting the status of the motor as "overcurrent." and therefore cannot probe or proceed. I am familiar with configuring third party motors (as I have done it before with another NEMA 11 and also a NEMA 42 successfully) so I do not believe my configuration is at all at fault. 

 

I then checked the driver and motor specs and saw that the motor had an inductance per phase (1.2mH) below the drivers inductance range(2-15mH). Seeing that this must be the problem for the failed configuration, I need some advice. This motor is highly customized and I would hate to have to purchase and wait for another and plus I would hate to buy another NI Driver with the correct inductance range because that would but me back ~$2000.  Is there any way to successfully add inductance to the motor via external inductance board or another alternative?

 

Thank you for your help!

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Try adding an inductor in series to each phase to make up the difference.

 

This may slow down the responce of the motor.

 

-AK2DM

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"It’s the questions that drive us.”
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