question

Hi

You could fit a delay timer unit from the start control signal. There are din rail mounted industrial timers, that have multiple inputs to control time functions etc.

Regards

Rob D

NZ

Remember that the problem is that even though the VENUS has discontinued the signal to keep the generator running. The generator continius to run for 5 extra minutes in a cooling down state. the Venus if it has decided to discontinue using the generator should also disconnect accepting power via AC IN #1. If it did then the generator would have zero load and would shutdown (cool down) correctly. Also if give time to the Quattros to transition from passthrough (GEN to LOAD) to inverter mode without the jolt of power in the AC IN #1 disappearing.

I think that you may be able to achieve a 'warm down' (and even a warm up) period by;

1. Physically wiring the GX device relay contacts into the Quattro 'Aux In' contacts

2. Using multiple assistants to;

a) 'Ignore AC Input' during the specified warm up/down period

b) Control a Quattro programmable relay, which can be used to start/stop the generator (generator auto-start connected to the Quattro programmable relay contacts instead of the GX device)

I have not tested this to confirm that it actually works, but this is what I suggest trying;

Wiring - refer to manual;

Assistants Tab

Assistant Summary

The example below should result in a 120s/2min warm up time/delay and 300s/5min warm down time/delay

Programmable Relay (1) Assistant - Step by step example

Select the relay to drive (physical K1/K2 or the 'General Flag' that can be allocated to a purpose in the 'General Flag User' assistant)

Select the relay action

Select the condition(s) to activate the relay action

Configure the condition and trigger delay - 300s/5min delay in this case (for the warm down period)

General Flag User assistant

Used to disconnect the AC input/generator during the warm up/down period

To configure an assistant you need to use a MK3 to USB interface;

https://www.victronenergy.com/accessories/interface-mk3-usb

With VE.Configure software;

https://docs.victronenergy.com/veconfigure.html#warning

You can also use the 'fake target' demo mode in VE.Configure to see what's possible before you configure your real device.

If your not comfortable to do this yourself seek support from a qualified/competent Victron installer or Victron dealer.

I'm able to get "halfway there" with this. I'm able to accomplish the warm-up period of three minutes before the load is applied, but when it goes to cool down, it just delays the shutdown for 5 minutes without dropping the load. What am I missing?

I think the issue is you followed my recommendation to change the order of 2 & 3 and John's recommendation to add a 4th. You can maintain the previous order and add 4 OR you can change the order of 2 and 3. I know the latter works (though maybe with the limitations he mentions); I'll defer to John's expertise on adding 4.

@JohnC that did it. Thanks for the explanations on the different PRs...you taught me how to fish!

This is an amazing solution to help me fix my significantly less cool setup. Thank you to everyone that contributed and to the original poster for getting the ball rolling.

I’m hoping that all the knowledgeable people in this post can help me with my implementation of this feature. Mine differs a little bit and I can say that the assistants and options I chose are all functioning as expected, but I think there is something incorrect in my ordering.

I can achieve either a 120 second startup delay or 300 second cool down by changing the order, but not both. Can someone please help me?

Being a bit stupid here but does this work in with the generator start and stop assistant so the generator works by battery voltage and it has the warm up and cool down period ?