Started a "Chop" Saw at dusk ~ Classic Went Crazy

[Matrix]

This has never happened before.  And when it happened I thought it was my inverters Warning Sound, a very annoying sound shouting out from over by my load center indicating an under voltage or something.  But it wasn't.  It was the Classic 150.  I saw no lights blinking, or warnings on the screen,  but it was letting off this God Awful warning horn like I had just experienced some kind of thermal melt down and the neighborhood needed to run for cover.

What did I do?  I started a chop saw.  I was doing some work working.  The Classic 150 was resting.  The SW4024 was not being overloaded,  probably seeing about 400 watts.  But I start the Chop saw and the classic goes nuts.  Only way I could see to stop it was to turn it off.  No problem after that.  (except I lost all readings for the day).

System is now a 730 Ah LFP 8s3p battery bank that was at 75% charge. 

Why did the Classic do this?   I have searched the manual for what the warning was, but not seeing anything.  I looked in the Local App for faults from today and did not see anything.  What thru the classic into a spasm?  Low Voltage something or other?   Over Current thing a ma bob? 

I'm Stumped?

[ClassicCrazy]

Maybe it was the arc fault or ground fault  alarms.
I vaguely seem to remember that alarm  you are talking about  but I have the arc fault turned off  long time turned off.
Maybe you want to check all your connections - I am guessing your chop saw has a big surge.
Someone else may have more experience with that.

Larry

[boB]

Yeah, I hate that sound too...

When it happens again, you might want to check the LCD screen to see if it shows an arc fault.  Some appliances can have internal arcing that can fool these things into thinking there is an arc.  I hate that too.

If it is an arc fault, you should be able to just press a button on the Classic's keyboard and stop that fault.

You can also go into the TWEAKS menu and either turn the AF  totally OFF or even adjust its sensitivity to a lower setting.

Also, you can either turn the audio sound off or down.

The siren isn't a very happy sound.