Standalone Pulse Input Servo Drive with fixed Advance/Retard speed

I am looking for a standalone (no PLC required) servo drive that I can set up to follow an incremental encoder at a fixed ratio AND will allow me to use drive inputs to advance/retard the servo at a fixed rate (that I program into the drive) WHILE geared to the incremental encoder.

In other words, I would like to use a 3 position spring-return-to-center switch to advance/retard a conveyor at a fixed rate WHILE geared to an auxiliary encoder. So no matter what speed the servo is running while following the encoder, it will "superimpose" a move at a fixed speed on top of the gearing

I have done this several times in the past, but every solution that I have found has required some sort of external source (PLC, HMI, etc.) in order to accomplish this.

Does anyone know of a servo drive that can do this without a PLC?

Thanks

Hope this will fulfill your requirements:
http://www.parkermotion.com/literature/Compax3Brochure_Sept2010.pdf
Their support is good or at least when I needed it they helped me.

Check out the Yaskawa Sigma7Siec. Single axis servo amp with integrated 61131 logic controller. That's as flexible as you're going to get for the money.

Google
https://www.applied-motion.com/products/servo-drives

I second Automax's recommendation.

Actually, you will need the Sigma7 MP2600iec to get the encoder input.

http://acim.nidec.com/en-us/drives/control-techniques/products/servo-drives/digitax-st/digitax-stz

The Control Techniques Digitax w/ EZ-Motion can do it pretty simply...

Highland Controls said:

Actually, you will need the Sigma7 MP2600iec to get the encoder input.

Click to expand...

I stand corrected and apologize for the oversight.