Doug Crews wrote: > Hello everyone, > > > > A quick question (hopefully). I have a substantial inventory of > Kollmorgan Servo Motors and Servo Drives (CD series)$. All the motors > have resolvers for feedback not encoders. The Servo drives are also > configured for resolvers as well. I really want to use emc on a > processing machine that will use 9 of these servo motors but I first > need to know if I can use the inventory I have. My instinct tells me > the Servo Drives should work because the loop is not being closed at the > drive but rather at the host computer. The question is will any of the > Mesa products or others accommodate resolver feedback. > > > > Has anyone successfully used resolvers in an application? By the nature of resolvers, you can's "split" the signal to go two places. So, if the drives require resolver feedback, then you must connect them there. Many drives then convert the motor's feedback to standard quadrature to feed to the CNC control. If your drives take step/direction or analog velocity commands, then there are a number of interface options that will work.
If you wanted to connect the resolvers to the computer without the help of the drives, then Pico Systems has a resolver to quadrature converter. You mention 9 servo motors. Currently, EMC2 only supports 8 PID channels through HAL and 6 axes through the G-code interpreter (I think). Jon ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
