Thanks for all your help Craig
I have purchased the following Allen Bradley motor and drive on eBay;
AC SERVO MOTOR MPL-A320P-SJ22AA, 1.3kW, 5000RPM, and matched servo drive; Ultra 3000 2098-DSD-020. Am looking forward to getting my machine set up and running. The motor fits really nicely into my machine, its a very compact motor!
Keith