Using “Programmable relay” depends on battery temperature?

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bob1606 asked Feb 1, '23

Using “Programmable relay” depends on battery temperature?

Dear community,

a short introduction of my system: I’m issuing a MultiPlus-II 48/5000/70-50 GX with a 16S lifepo4 Batteries and Fronius inverter as an ESS system.

The goal is, to use the Multiplus relays to control the battery temperature.

But, first issue is, I don’t see the relay button in my remote console. Do I need to activate relay option somewhere in the settings?

I also tried to use the “Programmable relay” assistant but without success so far.

The idea is, to use the ACOut 2 relay to power a heating pad depends on the battery temperature.

Temperature <5° --> relay on

Temperature >10° --> relay off

Did someone this kind of setup and can support me?

Thanks

Multiplus-II Temperature Sensor Relay

settings-rc.jpg (36.3 KiB)

pr1.jpg (77.5 KiB)

pr2.jpg (33.2 KiB)

pr3.jpg (32.7 KiB)

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Al answered · Feb 01, 2023 at 08:45 PM

@bob1606

The temperature sense input won't work, it's just being used as a digital input rather for that programmable relay, it doesn't use the temperature measurements.. You could use something like this: https://amzn.eu/d/hMwD8tX

What bms do you have, does that have programmable outputs to trigger something?

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Modifications Space

Node Red Space

Answer 1 · 2023-02-02T15:47:39Z

bob1606 answered · Feb 02, 2023 at 03:47 PM

Thanks Al for the quick reply. I use the JK BMS.

Maybe it is possible to make this setup with Node-Red. I just started with Note-Red tutorials. But maybe someone has already done this before and can send me a screenshot.

Thanks in advance

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