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Can anyone please help?
I have obtained some Vexta PK566 5 wire stepper motors and I need to make a driver for them. I know that they are probably the most difficult to drive, but I have got a basic layout of the switching circuit from Oriental motors, and I am damned if this problem is going to defeat me! Cost is a big consideration, as I am unable to work (legacy of a car crash).
Sanken Industries used to produce a driver for them (SI-7502) but that has now ceased production.
Hello jonandyev.
How is it going with the 5phase drive development?
I have 3 Vexta 0.72deg, 5 leads steppers one A4308 another one A5678 and another one which labels is unreadable but they are all looking the same
I am also interested in driving them, so far I have no idea but this document of the web http://www.allegromicro.com/skncatlg...er/si-7502.pdf
also this one describing a how to make one
http://www.geocities.com/dsaproject/.../cnc_ctrl.html
Konstantin.
Hello Konstantin, I have not gone much further due to health problems. The second link you have listed does mention me,in so far as I sent in the details about five phase driving. It is still on the backburner as far as making a driver and the programme should work with a pic. The interfacing techniques for driving a motor with a pic are well documented on Microchips website.
I did manage to obtain a proprietory driver from astrosyn that I have used to test the motors I have and they do seem to be much smoother than 2 and four phase stepper motors. When I get back to full health (that is not being nagged by the missus for overdoing things) I will try out the source code that is listed, and will probably try to use some Avr's as well.
I'll let you know more as I get futher into it.
Andy.
I wish you prompt recovery.
Would you point to the site and perhaps the links to the documentation area of the Microchips page?
I was trying to look out the SI-7510 but its nowhere to be found.
It sure looks nice way to implement a 5phase drive.
I guess PIC is the way to go.
Too bad my steppers are in penta connection this would make difficult to implement a chopper drive. Would the steppers be 6 lead in star configuration I would simply build a chopper board by Pminmo, I really dislike power resistors.
Konstantin.
Hi there,
I saw 5 phase motor driver on ebay right now. If you search with "stepper driver" key, you'll see that item.
Cooper
Isn't a 5 wire stepper generally a 4 phase with one common wire? I am a bit new to this, so maybe my terminology is off.
No, its a similar to the 2/4 phase steppers but with one extra coil, if the 5 phase stepper is wired in star then it has a common and its 6 leads, otherwise the stepper will be wired in penta connection and will have only 5 leads. Sometimes the 5phase steppers have all 10 leads out and you can wire it whatever you like. The 5phase steppers promise smoother movement, with a 50 tooth stator its 0.72 deg per step and 100 tooth stator does half of that, 0.36 deg/step. If you drive it half step the its even smoother, micro stepping will do wonders.Originally Posted by adamziegler
Konstantin.
P.S.
This are my steppers btw. Notice the disk mounted on the shaft extension, the large disk is made of ferrite material and inside there is a smaller disk magnet, I thought about removing the disk and begun to unscrew and then remembered about disassembling steppers isn't a good idea because if the stepper was magnetized with the attachment already in place I will disturb the magnetic cage field and the stepper wont be up to the torque specifications anymore.
Last edited by Konstantin; 01-17-2007 at 11:14 AM.
Thanks Konstantin!
Hello All
I am very new in CNC machine, I just begin to build a Router cnc, I have 2 set of stepper motor, one of them is a normal 6 wires and the other is 5 phase 5 wires penta set.
With the normal 6 wires I bought a Mc433 drive from Ebay, and also I built a drive from Instructable site too.
But I can not looking for a 5 phase drive, can any body tell me why??
1- is it too hard to make?
2- I open my 5 phase stepper, there are 10 block of wires? is it normal for a 5 phase motor?
any help will be great
Thank
Lehung, I have found a great deal of info on 5-phase stepper motors from the oriental motor website, It appears as though all of there 5 phase motors are in the penta configuration. Also there is a star configuration (Micron I believe) that come with 10 wires.
Oriental motors 5-phase info (bottom of page) they also have a 2 vs 5 phase article which is very informative.
http://www.orientalmotor.com/MotionC...ve-methods.htm
Here is a page showing the star configuration (can't find where I found it before)
http://books.google.com/books?id=TsX...F4GpVHchwCtTfo
Hope some of this info might help in identifying the 10 wires. As for building a 5 phase controller, I hope to in the future and will post any results. For now I have bought a udx5114 controller of ebay (5 phase penta driver) because of time.
Good luck !!
Hi hurricane13
Thank you very much for the infos, there are too many drive for 4 phase and 2 phase, I wonder how hard to make 5 phase drive?
I search every where, every day, and a long time for now, still I did not see a properly 5 phase.
does The UDX5114 using a pic? can you draw it schematic out?
If yes , then it is very good)
Cheers
The 5114 is a controller from oriental motor. I bought it on ebay for about $60 US. I had planned on building my own after opening up a CSD5707 controller because it seemed quite simple with one logic IC and two driver chips (I'll have alook at the Part numbers when I get home) But when I priced out the components, the one driver IC was $30.00. I figured I'd go for the store bought option until I had more time. I think it should be easy to make with a PIC or ATMEL IC, just time I guess. I will post the part numbers of the driver ICs when I get home. Maybe that will be a good starting point for a DIY driver.
I'll post back soon.
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