i just want to operate the relay on a temperature value. i have the temperature showing on the dash board but cant find a way of linking it to the relay control. It just shows alarm, generator, tank pump, or manual.
Thanks
Richard.
Hi,
Instructions for programming the relay to be temperature controlled are here - https://www.victronenergy.com/media/pg/Cerbo_GX/en/configuration.html#UUID-ebddd7d2-0e03-b245-047a-0c7923387d50
It sounds like you might also need to update the GX firmware to the latest current version -
https://www.victronenergy.com/media/pg/Cerbo_GX/en/firmware-updates.html
after an update it is possible to set temperature rules for the relays - that's nice. Thanks, but now one more question: Isn't it possible to integrate the temperature sensors into the alarm circuit? I also get an alarm signal from the BMS, for example, if the temperature in the BMS or battery is too high. This then disables the charging/discharging of the battery. Is that also possible in this form with the Victron temp. sensors that hang directly on the Cerbo.
The background to my question is: This night the communication to the EM24 was broken and the value for the grid was frozen at around 2000 watts. But the setpoint was 0 watts. So the ESS naturally tried to reach the setpoint and drained the battery. I want to prevent that now with the pole temperature of the battery because this naturally increases with a current draw of more than 100A over a longer period of time.
Of course, it would be nicer to get to the root of the problem. For example, if the grid value does not change by a certain value within a certain time, something is wrong and charging/discharging should be interrupted or an alarm should go up and thus stop charging/discharging
Is it possible to mix temp and time? I’ve found that I need to operate a pump depending on the cylinder temperature but not if the outside temperature is below 5°c. I’ve used both relays in an AND logic arrangement and realise I could have done it with computer programming logic rather than physical logic. But now I want to add a time element, ie I don’t want the pump to start until 6am even if all the other criteria are satisfied. Any thoughts?
