My van has Multiplus to get 220v from grid when connected in camping park. It has Orion DC DC charger when on the road. All is connected to CerboGX. Is there a way to get a sound alarm from Cerbo if I am starting the van engine while I am still connected with my cable to the 220v camping grid ? Just to be sure not to drive away while my cable is still connected …
Yes you could accomplish this by using a combination of 2 relays (one triggered by the shore power and the other by the ignition) connected to a digital input configured as an alarm. When both relays are activated (shore power connected and ignition on) the loop is closed, thereby activating the digital input.
If the orion is connected to the gx and provides a running signal, then you could use node red and not need to do any additional wiring.
Wouaw, not obvious to me but I’ll try to get you.
First, by the 2 relays, do you mean the relays integrated in the Cerbo or additional hardware ?
Second, yes the Orion is directly connected to Cerbo via its Ve-direct cable, could you tell me more about the Node red ? Would this way of doing be easier ?
2 relays would be additional hardware and wiring.
Given your setup, node red would be easier as it would not require any additional hardware or wiring. Node red is part of venus os large. It is basically a node based gui programming environment with a fairly simple learning curve. I would create a flow that monitors the orion for active ignition and monitors the ac input source. When both are active, trigger an alarm state of a digital input. I had something similar setup to monitor holding tanks and trigger an alarm, before I started using HAOS.
You can use the multifunctional relay of the multiplus, set it to switch on when theres ACin available. Then wire the NO contact on one side to ground, on the other you pull a wire to your buzzer/alarm devices negative connection. The positive connection you supply from ignition voltage.
Whenever ACin is present and ignition is on at the same time, the buzzer will buzz
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Interesting option as well, thanks @chrigu . Do you know if the Cerbo could be used as the buzzer device ?
Yes, but that brings you back to the first answer of thomasinaz