question

spaner avatar image
spaner asked

Victron Multiplus 3000 wont turn on

I have just started wiring up the load AC side (outlets) and I can't seem to figure out how to enable the MP inverter on the battery alone and want to eliminate if I have a setting or connection wrong - specifically with shore disconnected I can't seem to turn on multiplus - previously I think I could so I am wondering if I have a fault or something is locking things out. Neither physical switch and or the toggle in Cerbo no joy - neither INVERTER on nor Mains ON work.

If I am connected to shore multiplus mains turn on and AC1 output of Victon powers my distribution panel and I get output through my sockets (connected to a light bulb and heat gun all good) also if I use my AC2 which is a direct pass-through works fine also - so I know my connections post the multiplus are ok - it doesnt eliminate an issue on the inverter side - The Victron whilst connected to shore shows via Cerbo is in Passthrough mode.

Eletrodacus BMS specific info:
I am assuming this is a multiplus issue (hopefully programming) but I use Electrodacus BMS and it works fine with solar and shore power for charging. I have DC loads out powered fridge/fan etc (I have all loads {DC and Multiplus AC} ganged together through a common bridged octocoupler ) . I am using the two-wire BMS and have the jumper on MPP in place across pins 1 &2

MultiPlus Quattro Inverter Chargermultiplus ve.bus
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3 Answers
chrigu avatar image
chrigu answered ·

Make sure that the BMS assistant is setup correctly, and that the MP is set to litium mode

https://www.victronenergy.de/upload/documents/Manual-Connecting-other-lithium-battery-systems-to-Multis-and-Quattros-EN.pdf

That BMS supports two-signal-mode, so EXT IO3 is ATD/Allowed-to-Discharge and EXT IO4 is ATC/Allowed-to-Charge.

Whats the jumper for and which pins are 1&2 exactly? Aux Input 1?

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spaner avatar image
spaner answered ·

I believe I have the electrodacus set up correctly - For load sources (in my case a Victron battery protect and the output of the multiple) I have wired through the optocoupler into EXTIO3 and for allow to charge of MP into EXTIO4. I set up 2 wire BMS via Victron configure

Jumper is on the multiplus its a physical wire blue connector (I have this set up a standard I think with 1 and 2 pin bridged)

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spaner avatar image
spaner answered ·

is there any way to reset the multiplus in case its locked out due to the BMS controls (i will remove two wire BMS but I am waiting on MK USB interface (assuming i need VEConfigure access to do this) and hoping i can try and make some progress before that arrives


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