[Al_The_Man]

The Tach output is a generated DC voltage proportional to rpm, usually indicated in v/1000rpm.
You can easily measure this at a given speed.
Don't put any resistors in series with the motor, the one I indicated would go in series on the high end of a control potentiometer for example.
Also there are quite a few A-M-C servo controllers on ebay that can be run in the velocity mode for spindles.
Al.

[Schweinhund227]

Thank you AL !

I see your point ! about the Tach ! and about the Resistor... on the Pot !

what about the Horse Power Resistor... ??? on that KB Drive ?

They come in all Flavours...

the A M C drivers... well !!! are out of my League ! 300$ ouchie !

I don't need anything fancy !!! but controlabe via Mach 3 !!! with analogue ref. voltage from the Tach as a Spindle Speed Control Accel and Decel !

are Breaking Resistors required ? or a controlled Decel time good enough ?


Sorry for the Many questions but I don't want to Burn anything...

ie. when the Servo is Free spining... and feeding EMF back into my board !

so much to learn so little time !!!


Norm

out !:drowning: