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Victron 712 settings

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DKCruzser

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Victron 712 settings
« on: October 03, 2020, 10:45:23 am »
Does anyone know what the settings should be for my newly installed Victron 712 BMS?    I have  2 - 12 volt AGM Windynation BattaMax 12-100 batteries.  I did contact Windynation but they were of no help on the settings.

Battery Capacity - I know this setting should be 200 Ah

Charged Voltage _ ??? is this the float charge?  For my AGM batteries the bulk is 14.4, the absorption is 14.1-14.7 and the float is 13.5.

Tail Current - ??? do I just use the Victron default setting?   

Charged detection time - do I just use the Victron default setting?

Peukert exponent - do I just use the Victron default setting?

Charge Efficiency Factor - do I just use the Victron default setting?

Current threshold - do I just use the Victron default setting?

Time to go averaging period - do I just use the Victron default setting?

All the settings above where I mention "do I just use the Victron Default"  I can not find anywhere on the manual for the Windynation batteries and when I contacted Windynations they said they were all settings Victron is to provide.

thanks

dave
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Volkemon

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Re: Victron 712 settings
« Reply #1 on: October 03, 2020, 02:07:16 pm »
This may be handy - page 21 starts the setup and refers to sample charts.

https://www.victronenergy.com/upload/documents/Manual-BMV-700-700H-702-712-EN-NL-FR-DE-ES-SE.pdf

Nicely detailed manual!  Definitely not translated from mandarin.  :lol

Quoted your post in regular type.
Quote
The green quotes are from the link above, the italics are my best guess.  :)(:

Battery Capacity - I know this setting should be 200 Ah

Charged Voltage - ""The charged-voltage-parameter should always be slightly below the end of charge voltage of the
charger (usually 0.2V or 0.3V below the ‘float’ voltage of the charger).""
    You said the float is 13.5 ,  so  13.2V would be within specs.

Tail Current - "" Some battery chargers stop charging when the current drops below a set threshold. The tail current must
be set higher than this threshold.""
??? do I just use the Victron default setting? I would check the specs of the charger to see if it has a low current cut out. If it does not, or you dont know, stay with the default.

Charged detection time - do I just use the Victron default setting?   YES

Peukert exponent - do I just use the Victron default setting?  YES

Charge Efficiency Factor - do I just use the Victron default setting? YES

Current threshold - do I just use the Victron default setting? ""When the current measured falls below this value it will be considered zero.
The current threshold is used to cancel out very small currents that can negatively affect the long term state
of charge readout in noisy environments. ""
  A motor home is a 'noisy environment'.  This makes it so the electrical 'noise' does not add up over time to make the batteries appear low. So you use the current threshold to say what is really a load, and what isnt. The default setting is .1A, or ~1.2W.   So, if you had a 1W load on the battery, the monitor wouldnt 'see' it.  I would leave this at .1A , any significant parasitic drain would be above that IMO.

Time to go averaging period - do I just use the Victron default setting?  OK, this one is like the MPG meter in a car. If you set it to 0, it will be like the 'instant' readout on the car - you may see it range from 6mpg-200mpg quickly. Set it to 12, and it is like having the 'since reset' or a long term MPG.  So results take longer to change.  Default should be fine.  You can play with this value if you find the 'time to go' seems to be off after you use it for a while.




Hope that helps, and as ALWAYS, do not follow any advice from me if you are unsure of what you are changing. Sometimes I find out I am wrong after the fact... or I have been hittin' the shine...  roflol  *hic*

""You want to save money on travel, drive a Prius and stay at motel 6""  Forum Member Joseph


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