Having done some research what I am planning to do is:-
Keep the SEM servo motors replacing the encoders with AMT103 encoders from Digikey
Replace the servo drives with CNCDrive DG2S-16035, which I believe replaced the Dugong models
http://www.cncdrive.com/DG2S_16035.htmlI am not sure what to do about powering the drives or exactly how large a power supply is required to get reasonable performance. Previously I have built my own power supplies but, these were for smaller machines with stepper motors so voltage and current requirements were less. The plate on the motors says 140V and the datasheet that I found lists continuous stall current at 6.1A. I would also like to run the machine from 230V single phase.
I have done some searching and found details of a few conversions but a lot of these used Gecko drives and limited the power supply to 80V.
Can anyone make any suggestions or point me in the direction of some info?
Thanks
Alastair