[RE-wrenches] Radian 8048's shutting down on generator stop

I have a client (DIY) who has dual 8048's and he is starting the generator using both high load and low voltage settings with the AGS. It worked flawlessly for 9 months. Then for a couple of months when the generator shut down the lights would flicker. Eventually it started shutting down his loads

Re: [RE-wrenches] Radian 8048's shutting down on generator stop

Whoa! I just got access to his OpticsRE. It says battery voltage reached as high as 66V!!! (48V Nominal). I don't know if that's true yet or a acrtually voltage metering issue. But it appears that when the generator stops the invert mode kicks in and immediately shuts down due to high battery volta

Re: [RE-wrenches] Radian 8048's shutting down on generator stop

I would check at what voltage the Generator AC input set points are at. If the generator AC disconnect voltage is set to low say 100V then the inverters stay connected to that voltage then unlatch. Perhaps you are seeing a voltage spike at that time. Meters will show spikes not averages. > On No

Re: [RE-wrenches] Radian 8048's shutting down on generator stop

Sounds like the generator is connected to AC Out terminals (AC coupling). This will ‘work’ to charge batteries. It will function but the Radian has no way to regulate battery voltage. One would typically install an AUX controlled AC relay on a grid tie inverter set up for AC coupling. In your ca

Re: [RE-wrenches] Radian 8048's shutting down on generator stop

It's been a long time, but I'm quite certain it was landed on the Gen (AC2) input bus. It worked fine for many months, so I can't imagine this is the issue, but it's worth double checking. This was a prewired dual Radian system from Wholesale Solar (or whatever they're called now). Jason On Tue

Re: [RE-wrenches] Radian 8048's shutting down on generator stop

You can find the temperature compensation voltage in the battery hot button. It might be a bad temp sensor jay peltz power > On Nov 2, 2021, at 2:46 PM, Jason Szumlanski > wrote: > > Whoa! I just got access to his OpticsRE. It says battery voltage reached as > high as 66V!!! (48V Nominal).

Re: [RE-wrenches] Radian 8048's shutting down on generator stop

Not sure if this thread is still going but sounds like a sticking input relay. That would explain why it would shut down but then work again. Momentarily generator would still be connected to the output when the inverter was supposed to go back to inverting. Should be an input relay error though.