Originally Posted by JerryFlyGuy DareBee, what are you using for motor's and motor drivers? Are they the Fagor unit's or??
Todd, does the control pulse the drive at +/-10vDC or??
I'll have to ask a few more questions 
I'm a little ways away from settling on this route but am currently just looking at all my options. The current stepper unit I'm using would be upgraded to a servo system at the point where I move to another control, the steppers are just being used to get things up and working.
Jerry |
Hi Jerry,
What happens with an analog system (+/- 10vdc system), is the CNC provides a variable 10vdc signal to the drive input, voltage is applied based upon following error..... it is a constant voltage output. Therefore, if the command is G1 X50 F50, the control would immediately provide an analog command to the drive, which in turn would amplify this voltage to the motor, if the axes begins to get ahead of itself or fall behind the programmed command, the appropriate analog voltage is applied to keep the servo running on course and smoothly based upon the command. The control monitors the position feedback, compares the position to the command and then updates the analog output accordingly approxmiately 1000 times per second.
I would guess that approxmiately 60% of Metalworking machine tools in the world work in this way with an Analog command. Nowadays, slowly but surely Digital drive systems are increasing in popularity, particurarily on new mid and high end machine tools and Large machine retrofits. In another 5-10 years, most machines will be utilizing a Digital Drive System.
Fagor does offer a servo drive/motor combination that would work for your application, please contact the Canadian office if you desire a quotation.
Todd