PV Inverter Assistant

Q&A and troubleshooting
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Kia ora, I see what seems to be a contradiction between two sources of documentation of the PV Inverter Assistant.

  1. The PV Inverter Assistant itself has a setting “Restart PV Inverter when the (temperature compensated) battery voltage becomes lower than:”
  2. https://www.victronenergy.com/live/assistants:pv-inverter-support says “The frequency will reset itself automatically, in case one of the following conditions is met:
    1. the battery voltage drops below the re-bulk voltage threshold: the voltage that makes the system restart the charge cycle. For lithium batteries this threshold is defined as the float voltage minus 0.8V. Note that when float is configured to 54.8 volts or higher, then the battery voltage needs to drop below 54V. For lead batteries, the re-bulk voltage is defined as 5.2V below the configured float voltage. Unless that is configured to 56.8V or higher: then the battery voltage needs to drop below 51.6V.”

I don’t see how both can correctly represent the situation, and it would greatly help me to have clarity on this. Who can tell me how it actually works please (latest versions of VEConfigure3 90.04.251 and Multiplus firmware 2623558).
Thanks!

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Kia Ora Graham, note that the the voltage restart in the PV Assistant says that it is if you need to override the standard “rebulk”, and that it will operate of which ever condition comes first. this is why the default setting in the PV assistant is 40v for a 48v system. The rebulk setting will always trigger it first unless you manually change the 40v to a setting that is higher than the system rebulk. I would imagine that this setting in the PV assistant has been added for those situations where the Float of the battery is higher than 54.8 and you still want to maintain the 0.8 off set. ie Freedom won batteries float at 55.8, so if you dont alter this assistant setting, then the frequency will re set at 54v. Setting the Restart PV inverter to 55v will effectively maintain the restart at 0.8v below float.

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Thanks Lawrence.