AC servos

I recently hit the jack pot on ebay with a pair of Parker linear
stages, one with 1M travel, the other 0.5M, square rail, ballscrews,
enclosed screws, really nice stuff and at a great price. I'll be
asking for some advice later on how to turn them into something
useful. You can see them on ebay auction 130128732978 but its hard to
make out what's what from the pics.

They have AC servo motors attached, both Omron, one is 100W and the
other is 200W, both 200v, both 13bit incremental encoders.

You can see them here:

http://omron-industrial.com/en/home/products/motiondrives/ServoSystems/RotaryServoMot/default.asp

SGMAH-02AAA4CD-OY
SGMAH-01AAA41D-0Y

I'd assumed that I'd take them off, replace with DC motors and use
geckos but I had a look at the drivers for them:

http://omron-industrial.com/en/home/products/motiondrives/ServoSystems/ServoDrives/SigmaII/default.asp

And I noticed that there are pulse input versions of the drives. Does
this mean they could be used with step and direction signals?

I realize they are probably priced way above my budget but if they
could be used it might be worth saving an ebay search in case I get lucky.

Graham