MC board versions

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tamarino
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Joined: 07/27/2013
Points: 38

Hi all,

I had the CAPCUR message on my dashboard a few days ago, so I took the MC board out to check the 40A fuses. It checked out: one of them is gone.
I have a spare MC board which I've never tested (but really hope it works) and I just found out now that it's slightly different.

20160826_150639.jpg

20160826_150644.jpg

Does anyone know what that small added PCB does? The one with the "extra" is what I've been using (having the broken fuse now), a more recent version I guess...

I'm sorry if the answer is already in the forum somewhere but I can't remember seeing it before...

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hybride
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Joined: 08/01/2014
Points: 145
Re: MC board versions

The small pcb is the so called '8mA killer'. Without it the MC draws 8mA leakage current.

tamarino
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Joined: 07/27/2013
Points: 38
Re: MC board versions

hybride wrote:

The small pcb is the so called '8mA killer'. Without it the MC draws 8mA leakage current.

Thanks for the info hybride, I guess I'll have to live with that leakage until I manage to get my original MC fixed.

hybride
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Joined: 08/01/2014
Points: 145
Re: MC board versions

With 8mA leakage the batterie will lose about 1 Ah in 5 days. My Scooter with CALB cells has even more leakage because the BMS takes extra current. I had it once that the i was fooled by the batterie indicator after some downtime. Stranded with empty batterie :-( Now, after a week or more downtime, i always charge batteries before going on a a longer ride.

ESD charger code has a compensation factor for the 8mA leakage. When you turn on the scooter, leakage is calculated and abstracted from the fuel bar. For Runke i don't know. If you use Dugasengineering firmware you could ask David Dugas about this.

tamarino
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Joined: 07/27/2013
Points: 38
Re: MC board versions

I've got a Runke charger but I don't think leakage is going to be a big issue for me as I use the bike daily, never have too long downtimes.
Not sure about the fuel bar yet: it shows empty now as I just swapped the MC boards.
Switched to the Dugas-firmware now, so I will have to re-learn and get used to the "new behaviour" of the fuel bar and range indicator (never really trusted them anyway, displaying the voltage gives a lot better info :) )

R
R's picture
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Joined: 06/18/2009
Points: 1752
Re: MC board versions

Yo may repair damaged fuses with this upgrade kit:
http://www.shop.vectrixparts.com/fuse-200a-758.html
big_2_0.jpg

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