V3.5~28 Generator SOC not enforced after update

Currently I when on sure power I have my CerboGX setup to treat shore power like a generator. It is supposed to turn on the power based on state of charge. I have the SOC set at 15%, however, after updating to 3.50~28 1) the Cerbo failed to activate the relay 2) after manually activating the generator start/relay it still failed to accept power. Finally, upon a reboot it started acting as expected.

The cerbo relay is signalling what exactly? (I understand the function and reasons) A contactor? An onboard relay in the inverter with an assistant?

Is the relay opening and closing as it should, or it is just not closing and opening contact (as in there is a physical problem) what voltage are you running through it or is it dry contact?

I have it set up like the YouTube video below. I am using the relay 1 on the Cebo Gx and connecting it to Aux 1 on the Multiplus. In the the software of the MultiPlus I have some assistants which respond to the relay being open or closed.

Hi @Corvus,

I tried to reproduce the issue. I’ve configured the SOC condition, tested it on V3.42, then updated to 3.50~28, and tested again. In both cases, the relay was activated as expected.

Can you try to reproduce it again? Does it happen frequently on boot? Or only on the first boot after updating?

It only happened on the first boot after the update. Previous to this I have had no issues on I think 3.5~24 for a couple of weeks. When I updated to 3.5~28 I came back and noted that my SOC had dropped lower than the trigger so I when to my camper to inspect. There was power, the I tried to manually trigger the ‘generator’ however it didn’t work like it usually did. When that happened I suspected that it might get cleared after a reboot. Upon reboot it did clear.

I thought it might be my battery BMS, but it didn’t have any errors. Even if my BMS had errors manually triggering the ‘generator start’ should have bypassed that.

I have not reproduced the issue, but my SOC has not dropped below the trigger yet today. I will have time Friday to manually change the triggers to force it if it hasn’t happened by then.

My battery dropped below the SOC specified today, and the relay operated as expected.

Updated to 3.50~31 and there was no issue. I didn’t have the same issue that required a reboot. I guess it was just a fluke.

Ok thats good to hear,l. we reviewed the code and tested more, as its very important for us that the genset start/stop module is super robust and reliable.

But haven’t found any issues.

I’ll consider this issue was closed.

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