Taco 705-2 variable speed injection pump with ECM energy efficient pump?

[James Cross]

Anyone know if it is OK to use the Taco 705-2 controller with one of the newer ECM pumps (eg. Grudfos Alpha 15-55)?
The manual for the controller says it is compatible with a "permanent capacitor pump motor". I presently have a Taco 008 pump as the injection pump but I want to put in a more energy efficient pump. The plan would be to leave the Grundfos Alpha pump on "maximum speed" mode and let the 705-2 control its speed.

Thanks, experts.