BMV 712 and 24V DC / 120V AC Quattro with Cerbo GX

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Jeffery and Carolyn asked Jul 3, '22

BMV 712 and 24V DC / 120V AC Quattro with Cerbo GX

We have a 24V DC Quattro 110-120V AC Inverter/Charger and want to be able to shut off charging from the Quattro to the non-Victron lithium batteries when the temperature drops below a certain point. The system also has a CerboGX and BMV-712 wired in. The Quattro temperature sensor is connected to the 24V battery pack and we have a second temperate sensor we can connect from the BMV-712 smart shunt to the batteries if needed.

Currently the Quattro only measures high battery temperatures as we under stand it. Is there a way to get the relay in the Quattro to disconnect Quattro battery charging if the temperature drops below a certain point?

Thank you for your help with this.

Temperature Sensor temperature temperature compensation Temperature Alarm

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Answer 1 · 2022-07-03T18:00:50Z

klim8skeptic answered · Jul 03, 2022 at 06:00 PM

You might want to read up on DVCC .

You can enable STS and program the quattro to stop charging below 5c.

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Answer 2 · 2022-07-03T20:11:06Z

Rob Fijn answered · Jul 03, 2022 at 08:11 PM

Hello, there is an BMS assistant that can switch OFF the charging of the Quattro. This uses one of the sense inputs. So you need an external Temperature sensor with a Dry Relay contact, this contact is then a "No Charge" signal for your Quattro.

Hope this helps,
Rob

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