running mach 3 with a usb to parallel adapter

[GEOFFREY]

Kendrick, I do not think your spindle is DC, changing the frequency on your vfd will change the spindle speed, so it must be a 3 phase spindle motor. Remember what I told you last night, spindle speed is pairs of poles x frequency,
ie vfd frequency say 400hz (cycles per second) x 60 (seconds to minutes) = 24k RPM. This is a little higher than the actual speed due to slip, but is near enough for what you need. Ihope that makes sense. G.

[JAZZCNC]

Kendrick, I do not think your spindle is DC,

Easy to check Kendrick just take the connector off the spindle and if it as 2 wires it's DC, 3 wires it will be VFD/3phase like Geoffrey says. Looking at your other post I agree with Geoffrey it looks like VFD control panel.

[Kendrick57]

Fr the power problems with the usb what about a powered hub then the usb power is not coming from the laptop.
The spindle has 4 pins coming off it more than I would expect from DC maybe brushless with a backemf sensor wire.
kendrick

[EddyCurrent]

Fr the power problems with the usb what about a powered hub then the usb power is not coming from the laptop.
The spindle has 4 pins coming off it more than I would expect from DC maybe brushless with a backemf sensor wire.
kendrick

See in this other thread; http://www.mycncuk.com/threads/8457-...7150#post67150 too many threads for same thing.

[Kendrick57]

Your Correct no point having 2 threads open for the same Cnc. This threads problems have now been sorted, can any future comments be passed to a more generalised thread about any problems I have with the 6040. Go to
http://www.mycncuk.com/threads/8457-...7115#post67115
kendrick

[GEOFFREY]

Fr the power problems with the usb what about a powered hub then the usb power is not coming from the laptop.
The spindle has 4 pins coming off it more than I would expect from DC maybe brushless with a backemf sensor wire.
kendrick

Kendrick, you DO NOT have a DC spindle. G.

[Clive S]

Fr the power problems with the usb what about a powered hub then the usb power is not coming from the laptop.
The spindle has 4 pins coming off it more than I would expect from DC maybe brushless with a backemf sensor wire.
kendrick

the 4th pin will be earth or not even connected ..Clive