« Reply #1 on: May 24, 2016, 03:16:20 pm »
I believe if you set a modified speed (not preset) on the pump then disconnect power it will restart at that modified speed the next time you apply power. You can try it by setting the speed then flipping the breaker. When you flip it back on it should resume that speed. If that works then you can simply use your relay. As far as RS-485 comms with the pump Autelis makes a unit that will control it standalone.

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