question

skokie avatar image
skokie asked

Multiplus AUX I/O for Allow-to-charge in lithium system

It is possible to use in a Multiplus the AUX I/O for Allow-to-charge and the Temp Sensor for Allow-to-discharge commands.

Do I have to connect both connection for this function, or is it possible to connect only the AUX I/O alone for Allow-to-Charge, leaving the Temp Sensor connection unused and unconnected?

My BMS has only one free relay output left and I need only the charge disconnect function for the Multiplus.

MultiPlus Quattro Inverter ChargerLithium BatteryBMS
2 |3000

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1 Answer
Stefanie (Victron Energy Staff) avatar image
Stefanie (Victron Energy Staff) answered ·

Welcome @Skokie ;-)

See if this helps: https://community.victronenergy.com/questions/36764/simple-switch-for-charger-off-multiplus-3000-12120.html

You need to get familiar with Assistants if you are going to use AUX I/O for ATC.

The temperature sensor for the Multi is not needed. Your BMS should take care of it and open ATC in case temperature is too low to charge.

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skokie avatar image skokie commented ·

Hi @Stefanie, thanks for this quick response.

I think this will fit. When going back to my boat on Saturday, I try to get familiar with the assistants. ;)


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Stefanie (Victron Energy Staff) avatar image Stefanie (Victron Energy Staff) ♦♦ skokie commented ·

Man könnte sich auch theoretisch schonmal damit auseinandersetzen. Der Samstag ist kurz ;-)

Hier ist eine Übersicht der verfügbaren Assistenten: https://www.victronenergy.com/live/assistants:overview_of_available_assistants

Und eine kleine Anleitung, um was es bei Assistenten überhaupt geht, wie man sie einfügt und konfiguriert etc.: https://www.victronenergy.com/live/assistants:start

Du brauchst den 'Charge current control'.

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