SmartSolar MPPT RS 450|100 External Earth Fault Alarm

Q&A and troubleshooting
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1

I am trying to achieve an external Buzzer/Light for an installed system with a SmartSolar MPPT RS 450|100. In the spec sheet I can see there is a programmable relay, can this be assigned to toggle on Earth Fault to then toggle a contactor coil for an external earth fault buzzer circuit? If not is there another way that this could be achieved.

TLDR: External Earth Fault Buzzer on SmartSolar MPPT RS 450|100 how to achieve this.

2

If you don’t have a 450/100 available, check out the VictronConnect demo to see the relay-on-alarm feature. You can also use Node-RED to monitor for error #41 (panel isolation resistance too low) and automatically trigger alerts or activate a Cerbo GX relay when ground faults occur.

3

Thanks Owen, I have a 450/100 available. Was just wanting to program the relay to toggle on panel isolation fault, so I can run an external buzzer to the building. So as to make people entering aware that the metallic structure could potentially be “live”. I understand the 450/100 is Galvanically Isolated so this issue should never arise but, it’s a safety at request of the end customer.

I Will have a look into the Node-RED suggestion you have said.

Thanks!