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captainvenilia avatar image
captainvenilia asked

Can I control multiple networked MPPTs using a single VE.direct on-off cable

I have a bank of 8 networked smart solar 75/15 that I need to remotely disable from my third party BMS via a VE.direct non-inverting on/off cable (ASS030550310).


My question is: am I going to need 8 cables or will 1 be enough given the MPPTs are networked?

MPPT ControllersVE.Direct
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mvader (Victron Energy) avatar image
mvader (Victron Energy) answered ·

Hi @CaptainVenilia, you'll need 8 indeed. On/off feature is not part of the networking.


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paul-willems avatar image
paul-willems answered ·

Thank you @mvader (Victron Energy).

If I may ask a follow up question:
I read in this document that to remotely switch an MMPT off, I only need connect the rx pin (2) of the ve.direct port to ground (in combination with the correct setup in the app). Therefore, I am a little confused about the purpose of the ASS030550310. My BMS can do the connection directly without using the specialised cable... or am I missing something?

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mvader (Victron Energy) avatar image mvader (Victron Energy) ♦♦ commented ·

Hi Paul, that cable translates the signal from devices as listed in the manual of that cable to the (voltage) levels required for the MPPT. https://docs.victronenergy.com/ve.direct-non-inverting-remote-on-off-cable.html .

The circuitry for that is whats in the black overmoulded part in the cable.

If you don't need that, yes then there is no need for the cable at all. Connectors are from a brand called JST. I thought we had the specifics documented somewhere, but I can't find that just now.


you're welcome!

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