"Relay" menu item doesn't exist on EasySolar, does on MultiPlus

DIY
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1

Using the almost-latest firmware (v3.55), and GUIv2, systems with a MultiPlus + Cerbo GX have a menu called “Relay” where you can set the main relay to be used for a generator start/stop

On EasySolar GX (v3.64), which is essentially a MultiPlus + MPPT + GX, the same blue relay terminals are available (NO, NC, and Common), but the “Relay” menu is missing.

To config a gen auto start/stop, you can still add the assistant on an EasySolar and get the same auto-start gen features, but my question is ; both the EasySolar and the MultiPlus have a MultiPlus at the core, and both have the main relay (and relay terminals) on the inverter part of the board (next to the AC in/out terminals), yet on the non-easysolar system the visibility of the relay is somehow passed through to the GX, but the EasySolar system does not. Why is this?

The MultiPlus also has “Generator start/stop” as a first-class menu item, where the EasySolar does not - i would imagine this is rooted in the same answer as above?

Thanks!

2

That blue relay is part of the MultiPlus not the GX that’s why you don’t have the menu for the relay.

That relay can only be controlled by the MultiPlus with assistants.

3

Thanks, your msg prompted me to try it out on a system i have on the bench right now, and i’ve realised that the bit you didn’t say was that the “Generator” item in devices controls a relay that is on the GX, not the MP. I had thought that the GX was somehow reaching through the canbus interface and affecting the relay on the master inverter, but its not, its affecting its own relay.

So am i correct now in saying this;

  • The EasySolar GX doesn’t have any exposed relays that you can use
  • The MultiPlus, in both the EasySolar and the bare MultiPlus case, has multiple relays you can use (the blue dry-contact one, the green ones [Programmable contact K1, External ground relay ), but the only interfaces you have to them are;
    • NodeRed
    • Assistants
    • Injecting something into the correct MQTT topic?
4

The GX module in the EasySolar-II GX or MultiPlus-II GX doesn’t have any relays, neither outside nor inside.

The only way to control the relays of the MultiPlus are assistants in VE.config.

5

Are you sure? When i set the relay in a Cerbo GX (mk2) to Generator start/stop, and click the manual start button, the GX clicks - it sounds and feels like a relay click.

6

The Cerbo GX has 2 relays and what you hear is the relay of the Cerbo not the relay in the MultiPlus.

The GX device inside an EasySolar-II GX or MultiPlus-II GX is not the same as a Cerbo GX.

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