z28z34man (Customer) asked a question.

May 10, 2023 at 1:09 PM
drive for nema 42 motors

I am doing my first motion project replacing a 1 HP induction motor with a 15:1 gear ratio with a stepper motor to be able to more closely control the position.

 

when looking for stepper motors and drivers i see the STP-MTRACH-42202D has a nice torque curve and i should be able to use an 8:1 gearbox keeping it in the meat or the torque curve and actually be able to move faster than the existing setup. the only problem i see is the torque curve is using16A 160VDC in parallel configuration but I have no idea where to find a stepper driver capable of running at that voltage and current.

 

From what i can see automation direct drives top out at 10A 80VDC. Is there another preferred vendor that has a stepper driver capable of feeding this motor.

 

https://www.automationdirect.com/adc/shopping/catalog/motion_control/stepper_systems/dual_shaft_and_encoder_stepper_motors/stp-mtrach-42202d

 

https://cdn.automationdirect.com/static/specs/surestepnema42motors.pdf

  • 3 answers
  • 466 views

  • PouchesInc (Customer)

    I brought this up in the past when the motors first launched. Thought it was weird to have a motor but no drive that can handle it, and was told that was indeed the case.

     

     Maybe someone can link a 3rd party drive with the right specs, I couldnt find one myself. The best I found when looking was something like 160v 10A.But it was a DC input and then I would need a power supply capable of putting out 160v DC at enough current. Ended up being more expensive than a 1kw servo system and with a worse torque curve too.

    Expand Post
    Selected as Best

  • PouchesInc (Customer)

    I brought this up in the past when the motors first launched. Thought it was weird to have a motor but no drive that can handle it, and was told that was indeed the case.

     

     Maybe someone can link a 3rd party drive with the right specs, I couldnt find one myself. The best I found when looking was something like 160v 10A.But it was a DC input and then I would need a power supply capable of putting out 160v DC at enough current. Ended up being more expensive than a 1kw servo system and with a worse torque curve too.

    Expand Post
    Selected as Best

  • Adisharr (Customer)

    I'm with Pouches, Nema 42 steppers motors are rare in the field due to their current requirements and size. You would be better off looking at a servo and gearhead.

    • z28z34man (Customer)

      Looking in to it the price difference going to a LS Electric L7P isn't as bad as i thought it would be. The added functionality of an absolute encoder and an integrated break more than makes up for it in my opinion.

 

Did this information resolve your issue?