Dry Ice cleaning is used in the gravure printing industry. They use it to remove dried up ink/paint from the area below the ink pans where ink splashes out. Its noisy, but it sure works. I actually have a photograph of a guy doing this....
Just make sure that you read the docs that come with the Firmware update files, to see what bugs are still being worked out. This area is the one thing that GE does that is a double edged sword. On the one hand, you know the bugs that were fixed...but, on the other hand, you know what wasn't...
There are two direct interfaces to an Indramat drive to do what you want to do. 1) Indramat VCP, ... like a Maple Systems OIT, but much more expensive, and 2.) EXOR. Less expensive, and its better suited for what you want. You'll want to set up a write to an IDLE SPEED register, and off you go.
