question

sunnycoastgreg avatar image
sunnycoastgreg asked

skylla i 24/80/3 erroneous nmea bus readings

brand new skylla i, just installed,

all working correctly - except that displayed current readings when charger in “storage” mode are incorrect.
channel/bank B displays a varying current between 1-2A ... even when bank is disconnected from battery!
channel A/bank A - varies also but by smaller ammount ... however is “corelated” inversely to movement of B. (eg as bank A varies from 0 - 0.5A ... the displayed value from B reduces by similar ammount.
bank C displays constant 0.0.
in case of Bank A & B ... the readings are incorrect - as compared to actual measured current.
Bank B displays ... even when battery disconnected (garunteed zero current!)

readings are displayed on two different raymarine axiom MFD, AND cross checked & verified using nmea2000 bus monitoring disagnostic tool ... the displayed readings on the nmea bus are varying as described and displayed.

when “forcing” the charger into a period of absorption - the displays read a more constant current & displayed agrees with actual measured.

the problem appears to be with display behaviour when charger in storage mode..


Q: is this a hardware fault (in brand new unit).. or software?


Distributor has advised to post question in forum .. before initiaating warranty/return process


Skylla
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sunnycoastgreg avatar image
sunnycoastgreg answered ·

further
have reconfirmed that during “absorption” phase,
the displayed values EQUAL to the measured (clamp meter) readings

so its looking very much like a software related issue with erroneus readings when charger is in “storage” mode ...

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