Globallink 520 stopped working after triggering relay

[er-minio (Emilio)]

Another beginner question!

My small solar setup is currently monitored by a Globallink 520 (oder model with the squared case).
In December I set up the relay to connect/disconnect a small USB charger that keeps a security camera (Arlo) topped up and running. The camera can run on its own battery for a bit. It is generally always connected. I added the relay to be able to disconnect it in case of emergency (no sun, etc.). And also because I was curious to use the relay

The amperage required from the charger is within the Globallink’s relay specs. I also added a fuse on the line and the relay has been opened/closed multiple times remotely over December without any issues.

Just earlier I was checking the set-up (in person) and switched the relay from closed to open. The Globallink immediately went off.

I tried disconnecting the power and reconnecting.
Removing the cables connected to the relay, and combination of the above, but still not working.

I’m pretty sure I switched the relay to open. But even if that wasn’t the case, I doubt the amperage spike could be high enough. But I also read online that if you drive too many amps, generally the risk is to fuse the relay’s contacts. Haven’t read of damage to the Globallink itself.
Is there a resettable fuse by any chance on the Globallink? If yes, how long till it “resets”?

I have to add:

• the first “close” command today was given via VRM
• the “open” command when the GL shut off was done via Bluetooth via Victron Connect

[er-minio (Emilio)]

Ok. The issue was a fuse. Not the Globallink’s.

I came back to check as I noticed that removing the fuses from the distribution box (when I checked earlier) wasn’t turning on the little red LEDs that indicate missing/burnt fuse.
That should have meant that there was no power from the MPPT load where the distribution box is connected.

Checked and, yes, no power from the mppt load.

I checked the fuse from the battery positive to the MPPT (Victron SmartSolar 75|10) and found this:

I have no idea how I managed to burn the fuse that way.
This week I recharged the battery home to 100% and earlier today brought it back where the solar system is and reconnected everything (cough… cough… but did so directly, reattaching the entire system to battery positive/negative).

The MPPT and Globallink was working earlier today. It stopped later in the day (when I was playing with the relay).
This evening (dark) when I went to check the MPPT was off. Battery voltage measured at 8.44… while the battery was actually at 13.7v. That’s when I checked the fuse above.

The mppt earlier must have been working with the little voltage it was still getting from the panel.

Now everything is working perfectly.

I’m just slightly worried about that fuse. The state of it seems a bit extreme for a line that is supposed to only go up to 10A. The fuse itself is 15.