K1 open collector usage

DIY
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1

I have a multiplus 2, and have already assigned the physical relays inside the inverter, but i need to switch one more external device with a relay, and only k1 seems to be left as an option.
So… if i connected the coil of a small relay onto k1 (pin2 on the row of connections) and 12v pin 1 on the row of connetions, including an emf diode, would this work?

Also being its a 48v inverter, and pin 1 has 12v on it, would a small 12v coil relay be suitable?

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2

Yes if the relay is below 100ma

See my answer on the old community

3

Perfect thank you, this looks very positive ill give it a try.

4

So i tried this relay circuit, but it didnt work, i then tested the + pin for 12v, but i couldn’t get a reading on my multimeter. Should there be a permanent 12v supply on that pin in relation to the negative battery terminal?