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Does anyone know what the specification for the spindle motor is on a standard X3? I bought mine from axminster.co.uk, and the only markings on the motor are the AC power requirements of the mill.
Is it a perm. magnet DC brush motor? what voltage / current / power is it?
They are probabally like Rolls-Royce when you ask them for the H.P. of their engines, They just say 'Sufficient' :DQuote:
Originally Posted by daedalus
Al.
Al, im hoping to replace the control pcb with a dc servodrive, so i can set the spindle speed in software, and so that when i eventually dispose of the motor and add a servo my wirings already done. I understand that this wont be as good as using an actual servo motor, but im hoping its good enough to get me started.
Unfortunately i cant spec the power supply and drive to be "sufficient" without a bit more by way of details :)
There are some test you can do as I pointed out in this post http://cnczone.com/forums/showthread.php?t=39864
If the present motor is PM DC and not universal, the controller is probabally full wave bridge with scr control.
If you can get a step dir to analogue convertor and it is isolated, you may be able to replace the speed pot with one on the present drive.
I am just working on one to isolate analogue to analogue for these type of drives like KB make. You can pick them up on Ebay cheap and they take a tach input, if you put a tach on the motor, you can obtain precise control using a simple controller such as the KB.
If yours is a SCR drive fed from 240 in your case, then it is most likely a 180vdc motor.
Al.
Al, if you want to isolate an analog signal this is probably the cheapest option (bar rolling your own), as it will take a 0-5v analog input and produce an isolated analog signal:
http://homanndesigns.com/store/index...products_id=21
Thanks, But mine requires ±10vdc in ±10vdc out.
Al.