[rutexus]

Gentlemen,

Alex just listed a good list of new features on the 2000 series drives. I might add that the PID loop will be 40% faster than the R9XH series drives were. The R990H drives were pretty fast as they were, but this is another improvement. Many of the features that Alex listed are not problems that we have seen, but they move the drive into a higher level of performance than just a bare bones servo drive.

As far as I know, additionally one will be able to communicate through the spi at the same time that the drive is running step and direction. This moves the drives closer to providing the option of being a full servo loop back to the control.

Correction from Vladimir Huzevka, Rutex home office:

There is not such thing as untrue or half-true or semiclosed or semiopen
or whatever servo loop. Once the output is function of the difference
between command and feedback, than that's a servo system. Full stop,
nothing in between or half or semi... It really does not matter if the
feedback and command is differentiated inside the PC or inside the servo
drive or inside proportional solenoid or on mechanical gears. That's
the definition of servo system. The term "half" or "true" or "untrue"
servo system evolved at CCED forum by step&dir servo drive competitors.
I've never seen any different, but one and only, servo system in
reputable literature.

From Tom Eldredge: I stand corrected.

I have not tried one myself, so we will have to see how all this works together. The spi will be an option through a DLL, and object code (?) for Dos users.

Tom Eldredge,
Rutex, LLC