testing motors without letting the magic smoke out?

[Sporqster]

Well, moving along with my 'make this old CNC work again' project...

I've purchased a Xylotex board and it is enroute. I've been reading over the manual for the board so I have some clue as to how to make it work when it gets here (disclaimer: I'm a total n00b at home CNC).

I don't know where to set my 'Vref' for my motors, as I don't know what my stepper's max current capacity is.

The steppers on the Spectralight 0200 I have acquired are bi-polar, 8 wire, with 4 wires connected. The measured resistance across the poles is 3ohm. There are no markings whatsoever on the outside of the motors indicating max voltage, amperage, etc. This is all the info I've gleaned from the Light Machine's site about the motors:
"• Stepper motors: 70 Ncm (100 oz. in.), 200 step/rev"

The power source for the old control board which ran the motors in a previous life was outputting ~43V. What voltage was supplied to the motors then, I don't know, and don't know really how to check, as I do not have the PC expansion board or software to make the old controller work.

Any way of determining what the max acceptable current for these motors should be without letting the magic smoke out of them?

[Brokengears]

any idea where I can find a replacement stepper for a sectralight 0200? mine just took a dump

Joe

[stitchlips]

Well, moving along with my 'make this old CNC work again' project...

I've purchased a Xylotex board and it is enroute. I've been reading over the manual for the board so I have some clue as to how to make it work when it gets here (disclaimer: I'm a total n00b at home CNC).

I don't know where to set my 'Vref' for my motors, as I don't know what my stepper's max current capacity is.

The steppers on the Spectralight 0200 I have acquired are bi-polar, 8 wire, with 4 wires connected. The measured resistance across the poles is 3ohm. There are no markings whatsoever on the outside of the motors indicating max voltage, amperage, etc. This is all the info I've gleaned from the Light Machine's site about the motors:
"• Stepper motors: 70 Ncm (100 oz. in.), 200 step/rev"

The power source for the old control board which ran the motors in a previous life was outputting ~43V. What voltage was supplied to the motors then, I don't know, and don't know really how to check, as I do not have the PC expansion board or software to make the old controller work.

Any way of determining what the max acceptable current for these motors should be without letting the magic smoke out of them?

Did you ever figure it out? I have the same question.