• Victron Connect App

  What is ”DC Input Low Restart’ setting in VictronConnect using Multiplus-II?

  Posted by Innova on January 20, 2024 at 7:59 am

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  In the VictronConnect app (after connecting my Multiplus-II to my computer, using the MK3 USB interface device) there’s a setting called ‘DC input low restart’ under the ‘Inverter’ section.

  Could you explain how this setting is used, especially in relation to managing the restart of the inverter after a low voltage shutdown?

  enerjee replied 5 months, 2 weeks ago 2 Members · 1 Reply
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  enerjee

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  January 20, 2024 at 9:05 am

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  The ‘DC input low restart’ setting in the VictronConnect app defines the voltage level at which your MultiPlus inverter will re-engage and start operating again after it has shut down due to low battery voltage.

  Purpose:

  • This setting is used to prevent the inverter from immediately trying to restart as soon as the voltage rises slightly above the ‘DC input low-shutdown’ threshold.

  • Without this restart control, the inverter could enter a damaging cycle of shutting down and restarting if the battery voltage hovers around the shutdown threshold.

  Function:

  • When the battery voltage drops and causes the inverter to shut down to protect the battery, the ‘DC input low restart’ is the voltage point that must be exceeded for the inverter to consider restarting.

  • This avoids the issue of the inverter turning on again only to shut off almost immediately due to insufficient battery recovery.

  Recommendation:

  • It is generally advised to set this restart voltage at least one volt higher than the ‘DC input low-shutdown’ voltage.

  • This gap ensures that the battery has a sufficient charge before the inverter attempts to restart, providing a buffer against voltage fluctuations and allowing for some battery recovery.

  Usage Tips:

  • Proper setting of this parameter helps in avoiding undue stress on the battery and the inverter, contributing to the longevity of your system.

  • It’s important to monitor how your batteries recover after a low voltage shutdown and adjust this setting if you observe that the inverter is restarting too soon or not soon enough according to your specific energy usage patterns.

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