Acorn newbie here,
So I have a small desktop 4axis cnc setup. It has a 36vdc ps for the spindle, no vfd.
I have power in, power to motor. There is a toggle switch that reverses polarity/direction of the spindle and flat ribbon cable that goes to a potentiometer that controls the spindle speed.
My question is there a way to control the spindle speed/direction from the Acorn rather than manually controlling it with the motor controller?
Or how do I connect this spindle to the Acorn?
Thanks in advance.
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This looks like a modified power supply. I don't think there is enough information given to be able to tell if you can repurpose it. Does it have any model number markings? Are there other electronics with the potentiometer (more than just a resistor or capacitor)?
I can see a few possible cases here:
1. The pot directly divides the 36 volts to set the speed. No chance of controlling that with Acorn's 0-10V output. Probably not likely since most pots are rated for lower powers.
2. The pot divides 5VDC or 10VDC which is then translated to the 0-36V output. It should be possible to use the Acorn's analog output provided that the analog circuitry is isolated from the switching power supply. An isolator device may be required.
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