Very useful,
this demonstrates how you wire the different stepper motors ready for your driver boards.
http://www.mycncuk.com/forums/photop...eppermotor.jpg
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Very useful,
this demonstrates how you wire the different stepper motors ready for your driver boards.
http://www.mycncuk.com/forums/photop...eppermotor.jpg
Hi Please is their any chance of a clearer image.
My eyes are not that brill.
regards
peter
if you goto this link: http://www.mycncuk.com/forums/photoplog/index.php?n=81 you get a better image to view.
hi,
great information..on wiring steppers...? wondering with a bipolar driver board,is it better to couple
an 8 wire stepper motor as parallel or series,,is there any advantage in one particular way..if you choose parallel will it need twice the recomended current per phase...just
burnt out two sets of routout 10 amp boards and motors.so would like to be a little more certain of what we are doing...thanks bobin
Wiring in series will give you better torque at the lower speed, but due to inductance as the speed increases the torque will drop off very quick.
Connecting in parallel while giving slightly less torque at the lower speed but will give a lot more torque at the higher speeds.
Power wise you will get a lot more power in parallel, but you also need to give twice the phase current.
What are the motors?
Gary
Quote:
Originally Posted by bobin
hi gary thanks for the info on steppers wiring....motors are from and for(a denford cnc lathe ORAC they are italian motori hy200-3424-310-a8 )and can be run at 90 volts...we were testing them out on routout 10 amp boards when we blew the lot...repaced the mosfets on the boards,but driver chip has number rubbed off so cant source replacements..so we have bought motion control msd980 driver boards these will also work up to 90 volts(will have to look at your site to see what you have..but this time the driver boards have more protection..and we will be a lot more carefull setting currents..thanks again(ps gone to your site now)
You cant go wrong with the MSD980, it is most likely one of the best drivers in its class in the market.
The motor is an old MAE motor and the current is 3.1A Unipolar (I beleive) so that works out to be 2.2A in series and 4.4A in parallel.
I would measure the resistance of the phases and they should be 0.9 Ohm.
Also check to see if you are getting shorts between shases and to the motor body, just incase you fried it.
Quote:
Originally Posted by bobin
thanks for the motor data....visited your site zapautomation are you part of motion control?...dont think we will use these old motors..too uncertain with new driver boards...what motors do you have that is best to run with these drivers..will be pushing a small cnc lathe (orac)......servo stuff is now looking very atractive from your place(bought a 4 axis ,motors the works from lowcost retrofit from australia)a few months ago that wasnt low cost we wanted it for a [/COLOR]big bridgeport mill(mdi) its working very good
sytem with extra motors doubles onto a cnc lathe..but we are trying stepper systems to see how they compare performance wise...also got one medium mill running with 3 axis routout boards and mack3..keeps dropping steps it realy needs closed loop control(we just love retrofiting lathes and mills)........bobin:beer::beer::beer:
I worked for MCP for 13 year, and left about 2 months ago.
They are just down the road from me.
I do buy our stepper drivers from MCP, and MCP buy our mechanical products like ball screws, linear bearings and rails.
As for what stepper motor, well i would look at the SY85STH65 or the SY85STH118, these will work very well with the MSD980.
The current motor is only about 1.8Nm holding torque so any of these motors will be higher power.
Quote:
Originally Posted by bobin
hi gary....?been to your site(zap)is thesy85th118-4208 motors I see a price of +£28 pounds is that correct?....bobin
It is a £28 adder.
The way the site works, is you have a base price, and in this case it is £43.16 and then you add the adder dependant on the motor you choose.
So in this case the price would be £71.42.
Gary
Quote:
Originally Posted by bobin
sorry for hogging your time but on the msd980 boards on direction you have a plus 5v and a minus?? what signals are needed for these....will the +5 and low single wire goto +5 ,,if so what goes to the neg-.....bobin
I have attached a wiring diagram, and i think this will help.Quote:
Originally Posted by bobin
Normally your direction signal goes to the Dir+ and the Dir- goes to ground.
This might help a few people: Wiring Connection Diagrams | Lead Wire | Stepper Motors | Lin Engineering and this: http://reprap.org/wiki/Stepper_motor which goes a bit off the scope of wiring....