HI. Just getting into Arduino fun as I have joined the ranks of Roncilio Silvia espresso machine tweakers. My Arduino Uno is on the way and I am making plans for my control circuitry.
I know it is overkill but I want to control the speed of the ULKA-EP5 vibratory pump. The idea is basically to slowly ramp up the speed for pre-infusion and gain concise control of the pressure over the whole range of the shot process. The pump It is 120VAC and draws 41 Watts.
My research has led me to believe that phase angle control is the best way to limit the current to this little motor without toasting it in the long run.
I found this nice zero cross detection(ZCD) board: http://www.mlgp-llc.com/arduino/public/arduino-pcb.html
and it seems the code will be pretty easy with a timed delay of the output based on the input signals from the ZCD board.
I am looking for suggestions on a relay to drive the motor. Will a standard SSR work okay or do I need something faster or with some sort of snubbing? Any help appreciated.