I'm having an issue with connecting the industrial pneumatic valve with 2 coils to relays.
EDIT: I have connected it like this in the scheme below. Coils are connected to NO port on the relay, controlled by an Arduino.
Coils are standard MS 22 24VDC 3W.
I have tried controlling one coil at a time, and it switched on and off as it should. Both of them.
But when I connected both coils as on the scheme, there were problems... After one coil was set off there was a clicking sound and it came back on and looped in this cycle.
I measured some voltage on the valve housing when that happened. Don't really understand what is happening and I would like to get some help.
I have only one idea, to use 2 separate power supplies would that solve the problem? Is there anything else to do? Rele spec