The specs for that motor are a bit vague, however I'm guessing it has a tach built in going by the fact tach details are listed on all the pages for that motor.

To make them run closed loop using the PMDX, you'd need some form of driver that would close the loop and be controlled via step-dir.
If you're not bothered about running the spindle fully closed loop, a simple step/dir to 0-10V converter combined with a suitable servo amplifier (one of those boards will be a servo amplifier, but you'd need to research exactly what kind of input it takes) will give you open loop speed control.
Alternatively, you could just run the motor as a basic DC motor, using something like a KB driver board, which simply takes a 0-10V input and adjusts the output accordingly.