Originally Posted by
mike_Kilroy
Very true! Most drives only accept a single type of feedback and are limited to certain speeds, number of motor poles, and more. So a long search is required to find the right one.
Your alternative is to buy a state of the art latest technology drive that "does it all." Then you do not have all that search time. Make note of such drives for future use! That way you can utilize those $1500 ebay motor finds for $ 50.
One such is the Kollmorgen digital AKD drive that accepts resolvers, encoders, sine encoders, absolute encoders of many flavors (tamagwaw, renishaw, heidenhain, endat 2.1, endat 2.2, hyperface, DSL, BISS, encoders, halls, etc) and can run any servo motor from 2 thru 64 poles. And has analog input, step/dir input, and just about any digital input out there (ethernet/IP, sercos 3, ethercat, canopen, telnet, modbus, profibus, etc). And one that does autotune and more importantly auto phasing of motor to feedback. And is priced like the 'cheap' AC servo drives (not as low as the low cost BLDC ones). And can run a DC motor with encoder feedback or an AC induction motor (these are more unique applications). And has a nice easy to use windows GUI.
In all cases, double check with the manufacturer that your motor, feedback, and input requirements match their drive.