run speedwave 2640 without controller?

[roblarss]

I dont think there is a way without a controller of some sort. The wires are 24v+, negative, and pwm (speed control) signal.

The power supply is just converting AC to 24VDC.

I have one connected to an arduino giving a pwm signal for ramp up/down.

I just had my power supply replaced under warranty on one of my pumps. Showed up very fast. I think its a one year warranty.