I called Pentair support today, and posed my question.
The answer is no!
Not a real drawback, and, after a week of use, I'm pleased that I replaced my 1.5 HP single speed pump!
I was concerned about what pump RPM would be needed to draw water up my solar heater, and in my case, 2300 RPM works.
Pump shows the wattage at that speed is less than 800 vs 2000+ for the old pump! :-D