I'm not sure the best way to do this. I've got an old GE plc with only 120V relay outputs. I'm replacing a UV light component with an LED controller that has 24VDC NPN inputs. It seems like I could use a relay with 120VAC coil to switch 24VDC, but what kind of relay is that -SPST? And how to best "flip" the signal for NPN? Go into the program and make the existing coil into a nc contact?
Thanks in advance for any ideas!
Thanks in advance for any ideas!