Hours Discrepancy between Onan generator and SmartCraft VesselView

[Yury]

During routine log of my Onan generator hours I noticed that there is about 40 hour difference between the hours shown on the generator display and the SmartCraft VesselView. Would very much appreciate an advice on how to synch the hours. Could not find anything on this subject in the VesselView manual. I have twin 2012 QSB 5.9 480s and MDKBN Onan Generator.

Thank you very much,

Yury

Topic

[Yury]

Tony, David – thanks a lot guys. Makes sense. On our boat the 40 h discrepancy had accumulated over 8 years…

Stay safe,

Yury

[David Amble]

I have noticed a similar discrepancy on my boat. The hour meter on the Onan MDKBT generator itself is currently 1858.9 and I believe this to be accurate (as Tony says) and what I record and use for maintenance purposes. The Vessel View is showing 1881.0 hours (after 8.5 years). After a quick look at the Onan wiring diagram and the interface connections to Smartcraft, it looks like a ‘run’ signal (positive voltage) goes to the Vessel View and it relies on the internal clock of the Vessel View to ‘count the run time’. I can’t see anyway of adjusting this and to be perfectly honest, it doesn’t bother me. I have also noticed the the current time hh:mm ‘clock’ in the Vessel View gains time compared to the GPS clock (which is highly accurate) so I am presuming that this faster clock mechanism in the Vessel View is why the generator run hours are greater than the actual hours. Just my thoughts and others may have a different opinion.
David

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Tony Athens

[Tony Athens]

There is no answer to that–Your are dealing with Mercury outboard based Smartcrap electronics vs. a 12 DCV driven “clock motor”.. As to which is accurate, or more accurate — No clue, but I’d bet the clock.

[Author]

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