Connection hardware

Hello apologies if this has been covered.

I have in my system:

Lynx distributer (M10)

Lynx smart BMS NG 500 (M10)

Multiplus 2 3000 w inverter charger

Victron 300aH smart NG battery

Do I need a Cerbo GX to facilitate communications between the devices for programming and monitoring?

Can the communications between the above listed equipment all be done using rj45 cables?

Thank you in advance for your help

To get the best out of your system you need a GX device as this will allow the BMS to control the charging from the Multiplus and shut down Multiplus charging or inverting if required due to factors such as low or high cell voltage without having to rely on full system shutdown by the contactor.

VE Bus and VE Can comms are over cat5 cables.

Thank you. Which would I use if going with the cerbo option?

@GwB

  • if you just want the functonality: Cerbo GX mk2
  • if you like a screen: Ekrano GX
  • if you prefere DIY and have old parts: Raspberry Pi + CAN hat

I recommend eihter Cerbo GX mk2 (w/o screen) or Ekrano GX (with screen)

I use Cerbo GX for production and RPi for my test system.

For advanced programming of MP2, you need a Victron USB-MK3 interface.

Thanks… as far as the communication cabling, is it possible to use one protocol/network cable to talk to all these devices? From what I understand the ng battery is canbus and comes with its own cable that plugs into the bms. That leaves the other devices. I just want to make sure I’m not buying cables that I don’t need or are redundant. Having said that, is there a software tool that can be used to quickly figure out which cables are needed?

Thanks again

As ever, the manuals are a source of information.

The Lynx NG BMS connects to the GX device over VE Can which uses cat5 cables and you will need the terminators, one in the BMS, one in the GX, these should come with the BMS.

The Multiplus connects to the GX Device over VE Bus which also uses cat5 cables but does not need terminators. You just need 2 good quality cat5 cables.

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Thanks again