Thanks for your explanation, but...not enought
my questions is related to the scheme here http://pminmo.com/troubleshoot.htm
This hookup ciscuit is similar to the one know as CNC3AX France made, which use L297/298.
If I am not wrong, near to the "Motor Power supply" in the Unipolar Motor drive Supply, there are 2 resistor (red drawing) connected between the 2 central wire of the motor and +Voltage of supply voltage for the motor.
We are speaking for UNIPOLAR Motor. My motor has 6 wire (4 +2 central)
So, which formula need to be used in order to calculate the value? (previous post)
The "sense" resistor you mean is already placed on the Phil scheme and have also a trim for best regulation to complain motor requirementsd for best performance. Same scheme as Application note where I can find the formula for calculate the sense resistor.
My questions remain usolved.
Is my intention to realize this scheme, Is very simple and is also very very small, so I can hide somewhere in a small box o protection inside the CNC machine. I like the modular aproach used here.
To arrange the components in Europe, I change the optocoupler with similar named TIL192.
For the FET that drive external spindle I change with equivalent like TIP129. SLA7051 is coming from distributor, I have no pay, they are sended as sample free of charge. (6 unit) (2 CNC)
I think at the end, one axis cost me about few Dollars (or Euro) Great!!!!
For these and othe reason I need your tip and trik
Best regards in advance