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adev avatar image
adev asked

VE.BMS with Smart Solar 100/20 - battery protection control - which pin?

I have a 100/20 Smart Solar charger, a VE.BMS and a bank of Victron Lithium batteries. Which pin/s on the Smart solar do I need to connect to get it to cut charge/load if it gets a signal from the BMS?

MPPT ControllersLithium BatteryBMS
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nebulight answered ·
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adev avatar image adev commented ·

thanks for your response. I was told previously by someone else on here that I wouldn’t need the cable and could connect directly to the relevant pin on the MPPT. Of course I can’t find that now...

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msleiman answered ·

@adev Charge disconnect and load disconnect on VE.BMS are both high (battery voltage) in normal operation and go low (0V) when the event occurs. So for load disconnect you need to connect the the pin to an external relay/contactor coil (or battery protect) to control your relay which is feeding the loads, while for charge disconnect you need to connect the charge disconnect pin on VE.BMS to the Smart Solar (+) marked connector on the bottom right of the device labeled "Remote".

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Matthias Lange - DE avatar image Matthias Lange - DE ♦ commented ·

1. The question is over 3 months old.

2. The MPPT 100/20 dont't have a remote connector. ;)

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msleiman avatar image msleiman Matthias Lange - DE ♦ commented ·

Oops, sorry about that.

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