Hi,
I’m currently building my first Node-RED flow.
The goal is to turn on Relay 1 on my Cerbo GX II when the MPPT charger state changes to Float.
The flow works perfectly when I test it in the Node-RED editor (debug/test), but when it’s connected to the Cerbo GX II, nothing happens. Relay 1 doesn’t change state, and I can’t see any change in the Remote Console.
Do I need to enable or configure something on the Cerbo GX II before Node-RED is allowed to control Relay 1?
Any advice would be greatly appreciated.
Relay 1 has to be set to manual per settings below.
Okay, I now have the Cerbo controlling the relay, but the relay logic appears to be inverted.
When Node-RED indicates that the relay status is Open, the Cerbo overview shows that Relay 1 is Off. Likewise, when Node-RED indicates Closed, the Cerbo shows the relay as On.
Is this the expected behavior, or have I configured something incorrectly?
You close the switch in the power supply to the relay coil so the relay goes on, this is correct in my understanding. Then you open the switch in the power supply to the relay so it goes off. As the relay has NO and NC contacts the language has to relate to the coil being on or off.
