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

[John Blittersdorf]

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.

John B

On Tue, Nov 2, 2021 at 9:41 PM jay  wrote:

> 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 <
> ja...@floridasolardesigngroup.com> wrote:
>
> 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 voltage. I guess the inverters were coming back alive when the
> voltage settled to the normal range. But the homeowner reports that when he
> manually restarts the system the battery is around 54V. I'm not sure how
> long after the shutdown this occurs.
>
> So at this point I told him he needs to be very careful and make sure he's
> not cooking the batteries by testing with a volt meter during charging to
> see what's really going on.
>
> I'm concerned because the FNDC, both GS8048s and both FM100s all report
> abnormally high battery voltage. That suggest that the voltage is actually
> that high. But the charger setpoints are clearly set to defaults for absorb
> and float. I don't know why the voltage would blow past the setpoints.
>
> I misspoke in my initial email. He has AGS voltage start and SOC start set
> up.
>
>
>
>
> On Tue, Nov 2, 2021 at 3:09 PM Jason Szumlanski <
> ja...@floridasolardesigngroup.com> wrote:
>
>> 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 completely for a couple of minutes and it would
>> start back up automatically. Now when the generator shuts down the
>> inverters shut down and need to be restarted manually.
>>
>> He said there is an error code but he never wrote it down.
>>
>> Any ideas given the sequence of events?
>>
>> Lead acid batteries. 20kW generator. Despite it being DIY from an online
>> wholesaler, he did hire a licensed electrician and that electrician
>> consulted with me a bit prior to installation, so it's a pretty good job.
>> I'm thinking it's an internal Radian setting or fault causing this.
>>
>> Jason Szumlanski
>> Florida Solar Design Group
>>
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Re: [RE-wrenches] Radian 8048's shutting down on generator stop

[jay]

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). 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 voltage. 
> I guess the inverters were coming back alive when the voltage settled to the 
> normal range. But the homeowner reports that when he manually restarts the 
> system the battery is around 54V. I'm not sure how long after the shutdown 
> this occurs.
> 
> So at this point I told him he needs to be very careful and make sure he's 
> not cooking the batteries by testing with a volt meter during charging to see 
> what's really going on.
> 
> I'm concerned because the FNDC, both GS8048s and both FM100s all report 
> abnormally high battery voltage. That suggest that the voltage is actually 
> that high. But the charger setpoints are clearly set to defaults for absorb 
> and float. I don't know why the voltage would blow past the setpoints. 
> 
> I misspoke in my initial email. He has AGS voltage start and SOC start set 
> up. 
> 
> 
> 
> 
> On Tue, Nov 2, 2021 at 3:09 PM Jason Szumlanski 
>  > wrote:
> 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 
> completely for a couple of minutes and it would start back up automatically. 
> Now when the generator shuts down the inverters shut down and need to be 
> restarted manually. 
> 
> He said there is an error code but he never wrote it down.
> 
> Any ideas given the sequence of events?
> 
> Lead acid batteries. 20kW generator. Despite it being DIY from an online 
> wholesaler, he did hire a licensed electrician and that electrician consulted 
> with me a bit prior to installation, so it's a pretty good job. I'm thinking 
> it's an internal Radian setting or fault causing this. 
> 
> Jason Szumlanski
> Florida Solar Design Group
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Re: [RE-wrenches] Radian 8048's shutting down on generator stop

[Jason Szumlanski]

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, Nov 2, 2021, 6:41 PM Maverick Brown 
wrote:

> 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
> case, make sure the generator is landed on the generator terminals, AC2.
>
> Maverick Brown
> Off-Grid Solar Commander since 2006
> *Maverick Solar Enterprises, Inc.*
> * • Solar Commander Remote Power*
>
> * • SunFlow Systems Cathodic Protection *maver...@mavericksolar.com
> 512-460-9825
>
>
> On Nov 2, 2021, at 3:46 PM, Jason Szumlanski <
> ja...@floridasolardesigngroup.com> wrote:
>
> 
> 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 voltage. I guess the inverters were coming back alive when the
> voltage settled to the normal range. But the homeowner reports that when he
> manually restarts the system the battery is around 54V. I'm not sure how
> long after the shutdown this occurs.
>
> So at this point I told him he needs to be very careful and make sure he's
> not cooking the batteries by testing with a volt meter during charging to
> see what's really going on.
>
> I'm concerned because the FNDC, both GS8048s and both FM100s all report
> abnormally high battery voltage. That suggest that the voltage is actually
> that high. But the charger setpoints are clearly set to defaults for absorb
> and float. I don't know why the voltage would blow past the setpoints.
>
> I misspoke in my initial email. He has AGS voltage start and SOC start set
> up.
>
>
>
>
> On Tue, Nov 2, 2021 at 3:09 PM Jason Szumlanski <
> ja...@floridasolardesigngroup.com> wrote:
>
>> 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 completely for a couple of minutes and it would
>> start back up automatically. Now when the generator shuts down the
>> inverters shut down and need to be restarted manually.
>>
>> He said there is an error code but he never wrote it down.
>>
>> Any ideas given the sequence of events?
>>
>> Lead acid batteries. 20kW generator. Despite it being DIY from an online
>> wholesaler, he did hire a licensed electrician and that electrician
>> consulted with me a bit prior to installation, so it's a pretty good job.
>> I'm thinking it's an internal Radian setting or fault causing this.
>>
>> Jason Szumlanski
>> Florida Solar Design Group
>>
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Re: [RE-wrenches] Radian 8048's shutting down on generator stop

[Maverick Brown]

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 case, make sure 
the generator is landed on the generator terminals, AC2. 

Maverick Brown
Off-Grid Solar Commander since 2006
Maverick Solar Enterprises, Inc.
 • Solar Commander Remote Power
 • SunFlow Systems Cathodic Protection 
maver...@mavericksolar.com
512-460-9825


> On Nov 2, 2021, at 3:46 PM, Jason Szumlanski 
>  wrote:
> 
> 
> 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 voltage. 
> I guess the inverters were coming back alive when the voltage settled to the 
> normal range. But the homeowner reports that when he manually restarts the 
> system the battery is around 54V. I'm not sure how long after the shutdown 
> this occurs.
> 
> So at this point I told him he needs to be very careful and make sure he's 
> not cooking the batteries by testing with a volt meter during charging to see 
> what's really going on.
> 
> I'm concerned because the FNDC, both GS8048s and both FM100s all report 
> abnormally high battery voltage. That suggest that the voltage is actually 
> that high. But the charger setpoints are clearly set to defaults for absorb 
> and float. I don't know why the voltage would blow past the setpoints. 
> 
> I misspoke in my initial email. He has AGS voltage start and SOC start set 
> up. 
> 
> 
> 
> 
>> On Tue, Nov 2, 2021 at 3:09 PM Jason Szumlanski 
>>  wrote:
>> 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 
>> completely for a couple of minutes and it would start back up automatically. 
>> Now when the generator shuts down the inverters shut down and need to be 
>> restarted manually. 
>> 
>> He said there is an error code but he never wrote it down.
>> 
>> Any ideas given the sequence of events?
>> 
>> Lead acid batteries. 20kW generator. Despite it being DIY from an online 
>> wholesaler, he did hire a licensed electrician and that electrician 
>> consulted with me a bit prior to installation, so it's a pretty good job. 
>> I'm thinking it's an internal Radian setting or fault causing this. 
>> 
>> Jason Szumlanski
>> Florida Solar Design Group
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Re: [RE-wrenches] Radian 8048's shutting down on generator stop

[Tump]

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 Nov 2, 2021, at 4:46 PM, Jason Szumlanski 
>  wrote:
> 
> 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 voltage. 
> I guess the inverters were coming back alive when the voltage settled to the 
> normal range. But the homeowner reports that when he manually restarts the 
> system the battery is around 54V. I'm not sure how long after the shutdown 
> this occurs.
> 
> So at this point I told him he needs to be very careful and make sure he's 
> not cooking the batteries by testing with a volt meter during charging to see 
> what's really going on.
> 
> I'm concerned because the FNDC, both GS8048s and both FM100s all report 
> abnormally high battery voltage. That suggest that the voltage is actually 
> that high. But the charger setpoints are clearly set to defaults for absorb 
> and float. I don't know why the voltage would blow past the setpoints. 
> 
> I misspoke in my initial email. He has AGS voltage start and SOC start set 
> up. 
> 
> 
> 
> 
> On Tue, Nov 2, 2021 at 3:09 PM Jason Szumlanski 
>  > wrote:
> 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 
> completely for a couple of minutes and it would start back up automatically. 
> Now when the generator shuts down the inverters shut down and need to be 
> restarted manually. 
> 
> He said there is an error code but he never wrote it down.
> 
> Any ideas given the sequence of events?
> 
> Lead acid batteries. 20kW generator. Despite it being DIY from an online 
> wholesaler, he did hire a licensed electrician and that electrician consulted 
> with me a bit prior to installation, so it's a pretty good job. I'm thinking 
> it's an internal Radian setting or fault causing this. 
> 
> Jason Szumlanski
> Florida Solar Design Group
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> Tump 
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>www.SWNL.net 
> http://www.swnl.net/%22%20%5Co%20%22blocked::http://www.swnl.net/>
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>Serving Mid Coast Maine & Northern California
>  207-832-7574   Cl. 610-517-8401  
> 
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Re: [RE-wrenches] Radian 8048's shutting down on generator stop

[Jason Szumlanski]

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 voltage. I guess the inverters were coming back alive when the
voltage settled to the normal range. But the homeowner reports that when he
manually restarts the system the battery is around 54V. I'm not sure how
long after the shutdown this occurs.

So at this point I told him he needs to be very careful and make sure he's
not cooking the batteries by testing with a volt meter during charging to
see what's really going on.

I'm concerned because the FNDC, both GS8048s and both FM100s all report
abnormally high battery voltage. That suggest that the voltage is actually
that high. But the charger setpoints are clearly set to defaults for absorb
and float. I don't know why the voltage would blow past the setpoints.

I misspoke in my initial email. He has AGS voltage start and SOC start set
up.




On Tue, Nov 2, 2021 at 3:09 PM Jason Szumlanski <
ja...@floridasolardesigngroup.com> wrote:

> 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 completely for a couple of minutes and it would start back up
> automatically. Now when the generator shuts down the inverters shut down
> and need to be restarted manually.
>
> He said there is an error code but he never wrote it down.
>
> Any ideas given the sequence of events?
>
> Lead acid batteries. 20kW generator. Despite it being DIY from an online
> wholesaler, he did hire a licensed electrician and that electrician
> consulted with me a bit prior to installation, so it's a pretty good job.
> I'm thinking it's an internal Radian setting or fault causing this.
>
> Jason Szumlanski
> Florida Solar Design Group
>
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[RE-wrenches] Radian 8048's shutting down on generator stop

[Jason Szumlanski]

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 completely for a couple of minutes and it would start back up
automatically. Now when the generator shuts down the inverters shut down
and need to be restarted manually.

He said there is an error code but he never wrote it down.

Any ideas given the sequence of events?

Lead acid batteries. 20kW generator. Despite it being DIY from an online
wholesaler, he did hire a licensed electrician and that electrician
consulted with me a bit prior to installation, so it's a pretty good job.
I'm thinking it's an internal Radian setting or fault causing this.

Jason Szumlanski
Florida Solar Design Group
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