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merle.peter@gmail.com avatar image

Connecting battery balancer fault relay to Venus GX

I have 3 Victron Battery balancers and would like to connect the relay outputs to the Venus GX, What would be the best way to do so?

Venus GX - VGXBattery Balancer
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merle.peter@gmail.com avatar image
merle.peter@gmail.com answered ·

Will you need a pull up resistors or do they have them on them on the Venus inputs- the outputs from the balancers are just relay contacts.

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All in the manual:

https://www.victronenergy.com/live/venus-gx:start


4. Digital Inputs

The Venus GX has five digital inputs. The channels are accessible via the RJ-12 socket on the side. This is available for self-wiring by the user/installer.

4.1. Wiring details

The inputs are non-isolated. They operate at 3V3 levels, and can withstand up to 5V input. Each input has an internal 10k pull-up resistor to 3V3. We recommend wiring it to a potential free relay or otherwise open collector/optocoupler output.

Thanks! Should have checked there first


WKirby avatar image
WKirby answered ·

You could wire all of the three alarm contacts in parallel, just like in the diagram highlighted in the datasheet here:

https://www.victronenergy.com/upload/documents/Datasheet-Battery-Balancer-EN.pdf

Then take the "NO" wires over to one of the digital inputs of the VenusGX.
From the menus in the VenusGX you can set one of the inputs as some sort of alarm.

Go: Settings -> I/O -> Digital Inputs and then select one of the types of alarm that you like.

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