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SmartSolar MPPT100/50 Documentation Error?

Smart Solar MPPT 100/50 with VE.Bus BMS. The VE.bus BMS charge disconnect, is wired to the MPPT VE.direct port using the VE.Direct non inverting remote on/off cable.

VE.bus BMS manual says the charge disconnect output becomes free floating in case of cell over voltage or over temperature. But the MPPT manual indicates a free floating condition on the VE.direct RX pin will switch the charger on. This seems to contradict the VE.bus BMS manual.

MPPT manual reference: https://www.victronenergy.com/upload/documents/Manual_SmartSolar_MPPT_100-30__100-50/MPPT_solar_charger_manual-en.pdf section 5.2.5. RX port settings:

  • Remote on/off: This is the default setting. This functionality will switch the solar charger on or off via the RX pin.
    • - RX pin to GND will switch the solar charger off.
    • - RX pin floating or to battery positive will switch the solar charger on.

Is the red text correct?

Appreciate any clarification.





MPPT SmartSolarBMS
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Mike Dorsett answered ·

I think the error may be in the BMS manual. Easiest thing is to set the BMS up, and check the load and charge disconnect outputs with a meter. Most Victron remote inputs are low or closed to operate.

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Related Resources

Additional resources still need to be added for this topic

Victron VE.Bus BMS product page

Victron 3rd party BMS compatibility page