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Alistair Warburton avatar image
Alistair Warburton asked

Set generator as running when AC1 is active.

Hi folks,

I have AC1 set as generator input and it works as expected, bar for a limit addressed on another post.

I would like to track generator run hours but I do not have auto start set up yet as this involves a modification of the generator.

I currently start and stop the gen manually, which works for me right now, and would like AC1 to set the generator start and stop flag which would then log run hours for me.

I apriciate that its litterally the reverse of what would typically be required.

Is this possible? If not is there any way to build and run a script to make it possible? Could I build a custom helper of example. or is there perhaps a helper that runs script?

Multypluss 48/5000/70 & CCGX.

Cheers,

Al

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Alistair Warburton avatar image Alistair Warburton commented ·

I tried adding a helper to set the internal flag when it sees AC1.

ThenI added the generator start helper to run the generator when the internal flag is set, with minimal delay times and no other constreignts...

That seemed logical but It didnt work and now I have both AC and generator showing up in VRM...

If anyone wants to tell me how silly I am being, and why, I would very much apriciate the learning opertunity...!

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4 Answers
Kevin Windrem avatar image
Kevin Windrem answered ·

There's a potential solution IF you have digital inputs and you can connect something from the generator to a digital input that indicated the generator is running:

https://github.com/kwindrem/GeneratorConnector

This patch monitors the digital input and brings the Venus generator MANUAL run state into agreement with the digital input.

The problem with monitoring AC input to detect generator run state: there's only one voltage detection circuit and it monitors the selected AC input. So if the Multi/Quatro is on AC In 2, the state of AC In 1 can't be determined.


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Alistair Warburton avatar image
Alistair Warburton answered ·

Thats interesting, but more than a little scairy...

Mucking about, blindly, with random bits of tech is one thing but I am not sure I am ready to get in amoungst the Venus OS, with root access, on my mission critical CCGX...

I just checked the modbus registers that are exposed and writable and manual gen start is one of them. I hadnt apriciated untill you pointed mr to that article that there was more than 1 control point.

I was planning on automating the generator anyway, although that will need physical mods, and will be managed by a small PLC.

Modbus TCP is easy to impliment directly on the PLC and will be how I get system info so making sure the run timer is active should be relativly easy.
I may even be able to use the soft button, on the CCGX, to manual start if needs be.

I apriciate the help, thanks.

Do you know why the helper aproach didnt work, it seemed logical to me?
Just curious...

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Alistair Warburton avatar image
Alistair Warburton answered ·

I have been doing some reading and I think assistants, I was calling them helpers, should have checked, should do the job... However I cant get it to work.

I am trying to set the generator start assistant to run the generator all the time in the hope that that I can then modify that relay assignment with a programmable relay assistant, sensing AC1.
I have simply set very low AC load limits, assuming that will always start the generator.

I have to have the CCGX relay assigned to 'generator' in order to get the generator status screen to show up so I am assuming that this sets the relay assignment.

I cant get it to run let alone stop. I have tried just a single generator assistant to exclude the possibility that I am messing up the logic, thus far nothing I have done has worked!

I am obviously missing the point somewhere... Specific questions...

With the CCGX relay set to 'generator' how do I get it to start? (Close the relay)
Is it the Generator assistant I need or something else?
If it is the assistant, which relay is it?
Assuming I can get it to start in the first place, can I modify it back to stop with the programmable relay assistant and if so will that mark it as stopped of just open the relay?

Sorry if I am being stupid, this looked easy but I have failed miserably so clearly don't understand something important.

Any and all suggestions welcome and I would like to take the opportunity to better understand assistants rather than just addressing this one issue.

Cheers,
Al


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Alistair Warburton avatar image Alistair Warburton commented ·

Well I found the settings to run the generator in the CCGX, and yes I was being silly.

That alters my questions a little...

Can I modify/override this with a relay assistant?

If not, and the CCGX setting is preventing the generator assistant from working, is there a way to display run hours in the console/VRM when it is being controlled by some other relay and the CCGX generator control is disabled?

Al

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Kevin Windrem avatar image Kevin Windrem Alistair Warburton commented ·

Assistants run in the Multi/Quatro and control it's relay. There's no way to have the assistant control the CCGX.

The generator logic in the CCGX is fairly sophisticated and may do what you want, however sensing AC input is not factored in. The main reason is there is only one AC input sensor in Multi/Quatro and it is on the active input. The state of the inactive AC input can't be determined. And there are no digital inputs on the CCGX.

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alan avatar image
alan answered ·

You can simply run a hybrid genset report for the period you would like the data from. In the reports section on VRM

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Related Resources

Additional resources still need to be added for this topic

MultiPlus Generator FAQ

GX - Generator auto start/stop

Automatic Generator start/stop

 Hybrid Generators

Virtual switch - Generator start/stop

Additional resources still need to be added for this topic