Guess when 24VAC is connected between OPEN--COM then it turns in one direction; when connected between CLOSE--COM then the other direction.
Motor current is quite low 1.5W, 24V need prox 60mA AC.
"read the state from the "comm" terminal", what do you mean with this?
The usual solid state relay SSR will wot work with these small currents.
A simple solution would be to use two usual relay for each of the open, close connectors.
The relay contacts should be rated prox 40VAC min, 0.1A min.
Do you build your own board ? From the RPi use a transistor switch for each of the relay; add a flywheel diode and if you want it bulletproof then add an optosiolator for the control input.
If you buy one of these 'relay board', then doublecheck compatibility with 3.3V GPIO. For four motor, you need an 8-channel board. As four relay could be on at a time, I would not run the relay from RPi 5V supply rail, but use a separate DC power supply for this.
Be sure you do not switch OPEN, CLOSE at the same time...
Motor current is quite low 1.5W, 24V need prox 60mA AC.
"read the state from the "comm" terminal", what do you mean with this?
The usual solid state relay SSR will wot work with these small currents.
A simple solution would be to use two usual relay for each of the open, close connectors.
The relay contacts should be rated prox 40VAC min, 0.1A min.
Do you build your own board ? From the RPi use a transistor switch for each of the relay; add a flywheel diode and if you want it bulletproof then add an optosiolator for the control input.
If you buy one of these 'relay board', then doublecheck compatibility with 3.3V GPIO. For four motor, you need an 8-channel board. As four relay could be on at a time, I would not run the relay from RPi 5V supply rail, but use a separate DC power supply for this.
Be sure you do not switch OPEN, CLOSE at the same time...
Statistics: Posted by ghp — Sat Sep 14, 2024 7:11 am