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3 phase stepper

Posted by Feras obaid 
3 phase stepper
November 16, 2015 12:52PM
I have 5 stepper motor slavaged from emproidery machine type KT42JM4, can I use them to make Pursa 3d printer with Ramps 1.4 and A4988 driver.
If no ,which shield and driver can I use for those motors.
Re: 3 phase stepper
November 16, 2015 02:58PM
Hi,

You can use it. Just two wires (those connected to the centre of the coil) are unused :


Please not, colour wires of your motor may be different.

++JM

Edited 1 time(s). Last edit at 11/16/2015 02:59PM by J-Max.
VDX
Re: 3 phase stepper
November 16, 2015 06:05PM
... 3-phase steppers are wired different - they have 3 coils in a triangular arrangement and can't be driven with uni- or bipolar stepper drivers!


Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]

Call for the project "garbage-free seas" - [reprap.org]
Re: 3 phase stepper
November 16, 2015 11:30PM
Why not do a Google search on KT42JM4?

3 phase Hybrid Stepping Motor (3.75 Degree/Step)

Going to need a 3-Phase Hybrid Stepping Motor Driver

Don't know if there is a 3-Phase Hybrid Stepping Motor Driver that plugs into RAMPS?

Standard Steppers are so cheap -- you will probably spend more on special 3-Phase Hybrid Stepping Motor Drivers

confused smiley
Re: 3 phase stepper
November 17, 2015 03:05AM
I already googled it and found that it is 3 phase hybrid and driving methods is bipolar, but couldn't find more info about driving it

[www.nidec-servo.com]
Re: 3 phase stepper
November 17, 2015 03:25AM
3 phase steppers are often used in "brushless" camera gimbals.
There are controllers with three L6234D drivers on it with an arduino 8 bit CPU.

Anyways, I don't see any advantage in using them, because they only offer 3.75°/step.
-Olaf
VDX
Re: 3 phase stepper
November 17, 2015 12:09PM
... I have some NEMA-23 sized 3-phase steppers from Berger-Lahr/Precitec with special controllers that are superior to common types winking smiley

They are driven with 325V(!) DC to deliver 2Nm torque and can be configured per dip-switches to different fullstep-modes like 200 / 400 / 500 / 800 / 1000 fullsteps per turn - another option with 10x microstepping will change to 2000 / ... / 10000 steps per turn respectively.

This motors are used in high precision machines for laser-engraving and are assembled to Z-stages with 5:1 reducing gearing (50000 microsteps per turn) on 5mm spindles with 180mm travel and have 0.1 micron stepping resolution at 200kHz max. stepping speeds (max. 20mm/s).


Viktor
--------
Aufruf zum Projekt "Müll-freie Meere" - [reprap.org] -- Deutsche Facebook-Gruppe - [www.facebook.com]

Call for the project "garbage-free seas" - [reprap.org]
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