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luckybeanz avatar image
luckybeanz asked

Multiplus II automatic on/off with cerbo gx and VE.BUS

Hi I know similar has been asked in the past, but I have not yet been able to find a solution. Maybe someone else has come up with something?

I am two lithium, a 48v bank and a 12v bank, on my sailboat. I normally live aboard, but this winter I will be leaving the boat for an extended period. I would like to run a far infrared heater and dehumidifier whilst I am away. I have 1.2kw of solar so should be able to handle almost continuous use. Though what I would like to do is only run them when the batteries are charged up to say 70%, thus ensuring that if there are a few days of no sun and the battery drops bellow this level the inverter (and devices it is running) won't running the battery down.

Is there a way I can do this? Note that I am running REC BMS which controls the charging via the cerbo gx.

Multiplus-IIcerbo gxGenerator
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mrhappy avatar image
mrhappy answered ·

If you have a correct state-of-charge value in the system, you could connect the heater and dehumidifier to "AC Out 2" and program a generator start-and-stop assistant with VE.Configure.

Below is just an example of that assistant setting that would shut AC Out 2 off when SOC is under 70% and then turn it on again when SOC rises to 80%.

screenshot-2021-09-26-165515.png


screenshot-2021-09-26-165515.png (31.0 KiB)
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luckybeanz avatar image luckybeanz commented ·
Thank you I will give it a go.


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