question

tomppa73 avatar image
tomppa73 asked

Multiplus poor charging

Hi!

I have charging problem with my Multiplus 12/3000/120.

I´m charging with generator onan emerald 4000, batterys are opzs 1000Ah.

Used to charge full 120A no problem, but i did test smaller generator when i was in site, Honda ex650.

Lowered multiplus charging to 2Amps when using Honda, but honda did not worked well on charging, so i set everything back to where it was 120Amps charging and so...

Multiplus charged like it should, 120A. after couple weeks it started charging only 2Amps?

I´m at remote distance 130km, and i can/must disconnect multiplus with gsm relay to save battery power. i can run everything remote, multi, generator, cameras etc...

Tryed set up multi to charge batterys at full with vrm portal, but no success, only 2amps (bulk) vic.jpgvic3.jpgInverter side is working, multi is passing power from generator to consumption. Parameters are transferred to multi via vrm portal, and it seems good.

Any ideas?im going to site next week and see if parameters will change localy.

battery charging
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2 Answers
Matthias Lange - DE avatar image
Matthias Lange - DE answered ·

Limited the AC input current by accident? Or the charging current via DVCC in the remote console?

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tomppa73 avatar image tomppa73 commented ·

screenshot-20221128-003415-vrm.jpgscreenshot-20221128-003318-vrm.jpgscreenshot-20221128-003230-vrm.jpgAc current limit set 16A, that dvcc was worth to check, but no luck from there, it's not enabled and if enabled i get firmware alert. I think nothing is broken fysicaly in multi, because its charging at least some amps.screenshot-20221128-003212-vrm.jpg

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tomppa73 avatar image
tomppa73 answered ·

Now at site, both bulk and absorption lights are blingking, it means voltage sense error.

Voltage is 12v at main terminals, victron app measures 4,4v. And alert on voltage sense error. Something is broken, any ideas what?

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