I have a luxpower sna5000 it worked fine in the beginning now during loadshedding after about an hour the eps goes off and back on again about every 5 minutes and it seems to be getting worse. I have one hubble am2 battery connected no panels yet.

Without any Inverter setting info or battery and Inverter voltages and load data, not much advice can be given.
What are your inverter settings? Do you have an active BMS connection with the correct Lithium Protocol between Battery and Inverter or is it Voltage controlled?
What are your loads, SOC and battery voltage when this happens?

Also see the Hubble guide for your inverter
https://www.hubblelithium.co.za/luxpower

Edited November 27, 20223 yr by zsde

I have an active bms connection i am thinking the problem is with the hubble's bms because sometimes when ac charge comes on after about 10 seconds i can hear n faint click like an relay kicking in from the battery then the ac charge stops. My setting are correct i believe and there does not seems to be a specific soc when this happens

If i set the battery as lead acid with correct voltage settings the eps does not trip it only trips when it is on lithium iron. My setting is correct for battery it is battery brand 2

Just an observation from your screenshots.
And I am not familiar with the LI Protocol of your Inverter and whether these specific settings are populated by your BMS, I doubt it.
These settings here are definitely not "synched". Which one takes priority according to the Inverter user manual?
Is the percentage one only used in Li protocol and the V one only with LA? 
100% would be 53,6V, yet the Voltage setting is at 48V. Same for the 90% which would be a lot closer to 52V.





 

I have the same issue, EPS keep tripping.  I have communication between the inverter and batteries.  Setup as follow:

1.) Lux-Power SNA 5000

2.) 3 x Mecer M3000 (Same as Dyness B3)

3.) 8 x 455W PV panels

The supplier updated my firmware but the problem remain.  EPS trip as low as 3% load sometimes with error 28 (EPS overload).  When Eskom is on and the load is taken up by solar and/or batteries, it never trip!

Also if the inverter is set to Lead-Acid it doesn't trip at all.  Obviously I don't want to run like this indefinitely, much better to work with SOC and for the battery BMS to control the charging.

Anyone with some advice/info?  @Tommie6.5 did you mange to resolve your issue?  If yes, how?

3 minutes ago, Theog17 said:

I have the same issue, EPS keep tripping.  I have communication between the inverter and batteries.  Setup as follow:

1.) Lux-Power SNA 5000

2.) 3 x Mecer M3000 (Same as Dyness B3)

3.) 8 x 455W PV panels

The supplier updated my firmware but the problem remain.  EPS trip as low as 3% load sometimes with error 28 (EPS overload).  When Eskom is on and the load is taken up by solar and/or batteries, it never trip!

Also if the inverter is set to Lead-Acid it doesn't trip at all.  Obviously I don't want to run like this indefinitely, much better to work with SOC and for the battery BMS to control the charging.

Anyone with some advice/info?  @Tommie6.5 did you mange to resolve your issue?  If yes, how?

Are your batteries communicating properly with the inverter? the fact that it doesnt happen when on Lead Acid points to a incorrectly configured cCAN cable / CAN setup

Just now, mzezman said:

Are your batteries communicating properly with the inverter? the fact that it doesnt happen when on Lead Acid points to a incorrectly configured cCAN cable / CAN setup

It would seem that there is proper communication, get SOC feedback, correct charge/discharge currents, number of batteries, battery capacity etc all correct.  I tried a number of different cables between the master bat and the inverter but it didn't resolve the issue.

Also there is no error feedback from the batteries or inverter, how else can I check for proper communication?

On 2023/01/19 at 12:15 PM, Theog17 said:

I have the same issue, EPS keep tripping.  I have communication between the inverter and batteries.  Setup as follow:

1.) Lux-Power SNA 5000

2.) 3 x Mecer M3000 (Same as Dyness B3)

3.) 8 x 455W PV panels

The supplier updated my firmware but the problem remain.  EPS trip as low as 3% load sometimes with error 28 (EPS overload).  When Eskom is on and the load is taken up by solar and/or batteries, it never trip!

Also if the inverter is set to Lead-Acid it doesn't trip at all.  Obviously I don't want to run like this indefinitely, much better to work with SOC and for the battery BMS to control the charging.

Anyone with some advice/info?  @Tommie6.5 did you mange to resolve your issue?  If yes, how?

If you say the batteries are the same as Dyness, have you tried setting Number 3 (page 24 in the manual), step 1. Select Lithium battery step  2. Select brand 8=Dyness

The battery is then automatically set up.

On 2023/01/21 at 1:33 PM, gdcarter said:

If you say the batteries are the same as Dyness, have you tried setting Number 3 (page 24 in the manual), step 1. Select Lithium battery step  2. Select brand 8=Dyness

The battery is then automatically set up.

That is exactly how it is setup and there is communication between the two but it still tripped in EPS mode.

However, after the last round of firmware updates and I replaced the LAN cable, it seems to be stable & working now.  I'm still cautious to load it as little as possible during load-shed (EPS mode), and so far so good.

Thanks for the interest.

On 2023/01/19 at 12:15 PM, Theog17 said:

I have the same issue, EPS keep tripping.  I have communication between the inverter and batteries.  Setup as follow:

1.) Lux-Power SNA 5000

2.) 3 x Mecer M3000 (Same as Dyness B3)

3.) 8 x 455W PV panels

The supplier updated my firmware but the problem remain.  EPS trip as low as 3% load sometimes with error 28 (EPS overload).  When Eskom is on and the load is taken up by solar and/or batteries, it never trip!

Also if the inverter is set to Lead-Acid it doesn't trip at all.  Obviously I don't want to run like this indefinitely, much better to work with SOC and for the battery BMS to control the charging.

Anyone with some advice/info?  @Tommie6.5 did you mange to resolve your issue?  If yes, how?

 

Good day i got rid of my hubble am2 bought a LBSA it is working now the eps is not tripping only problem is it won't charge battery past 98%(56v) 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Why do you think it is a problem you are already at3.5v/cell you not gaining any capacity above that actually better for longevity of the cells

The LBSA float voltage is 56.2V

 

 

 

4 minutes ago, Tommie6.5 said:

The LBSA float voltage is 56.2V

 

 

 

I have one and according to what I can see is charge to 56 V float to 54 V cut out 44 V 

My Lux-Power SNA 5000 is still tripping when in EPS (mains off eg during load-shed) mode.  The supplier did update the software but it still happen randomly sometimes.  Weird thing is there is always very little load (less than 10%) when this happen.

Any help please will be appreciated.

On 2023/02/06 at 12:40 PM, Theog17 said:

My Lux-Power SNA 5000 is still tripping when in EPS (mains off eg during load-shed) mode.  The supplier did update the software but it still happen randomly sometimes.  Weird thing is there is always very little load (less than 10%) when this happen.

Any help please will be appreciated.

Hi Theo, 

 

Did you maybe resolve your issue? 

I have a new install in an off-grid setup and it keeps tripping on EPS.

 

DYNESS battery correctly set up. 

Just checking if your installs have the inverter setup on UPS or APL in inverter mode? 

Hi Guys

I hope I can assist with my 5 cents worth of input (Sorry the other 5 cents was spent on more solar panels).

My Setup: 

- Luxpower SNA 5000WPV

- 2 x Pylontech US3000C

- 8 x 550watt TW Panels.

I have been receiving Error Code 28 - EPS Load High whenever there is loadshedding during the daytime or when solar power is available but no AC / Grid Power. When the load exceeds the PV power generated then the EPS trips. This can be at high or even very small loads such as 300 watt. I then have to reset the inverter and it may even trip 3 to 4 times during loadshedding. It is very frustrating, because when I then turn off the PV switches the batteries will take over and I can draw 3.5kw easily from the two batteries with peak instantaneous loads of up to 7kw.

I read all the blogs, watched countless hours of Luxpower training, consulted all the manuals and even had 3 different installers look at the settings. 

This is what I have done to date and it seems the issues have disappeared... let’s hope!

• I have asked one of the Distributors for my own Installer profile as the End User profile has limited options when using a PC and browser. I understand Lux power is also able to assist with this if you have issues contacting your installer.
• With my own installer profile, I did an update of the Firmware (Please make sure you know how to do this as doing it wrong you can brick your inverter).
• I then tested and found 2 scenarios that would make the EPS trip during loadshedding. When there is AC power then everything runs fine. PV takes the load and charges the batteries and AC will take over when PV power is not sufficient. My batteries are only used for backup during loadshedding. So, I did the following:

1. There is a setting under APPLICATION SETTINGS called PV GRID OFF. This was enabled and overlooked by all 3 installers. I understand this is used when you have a setup where you have no batteries installed. I disabled it and most of the EPS trips went away. As if the inverter was not allowed to use batteries when it was enabled. 
2. The other issue was to do with the AC Charge timings and I could not find any timings where the EPS does not trip. I then changed it to Charge from AC - According to SOC, which is the recommended setting for Lithium Batteries. 
3. My inverter EPS voltage output was also set at 240V and I changed it to 230V as the manual indicates it should be.

Since then, I have not had any issues except for the AC Charge only starting when the batteries reach a certain SOC (50% in my case). So, at night when Eskom is on then I would do a manual quick charge to keep the batteries full and ready for the next loadshedding period. My batteries seldomly go below 70% btw as I do not use that much power at night. I will still play around with the % for when the AC starts charging (maybe 90%) and see if the batteries stay full and that it does not interfere with the issues mentioned above.

Hope you guys get yours sorted. 

On 2022/11/27 at 6:01 PM, Tommie6.5 said:

If i set the battery as lead acid with correct voltage settings the eps does not trip it only trips when it is on lithium iron. My setting is correct for battery it is battery brand 2

Hi. We've been having the same issue with Luxpower and Hubble. We've only been able to sort it by setting to Lead Acid and setting voltages and currents manually. BMS Cables are perfect. If anyone has a solution, please let me know. Thanks.

On 2023/02/06 at 2:40 AM, Theog17 said:

My Lux-Power SNA 5000 is still tripping when in EPS (mains off eg during load-shed) mode.  The supplier did update the software but it still happen randomly sometimes.  Weird thing is there is always very little load (less than 10%) when this happen.

Any help please will be appreciated.

Try setting your maximum discharge current to a lower value, say 50A. As a matter of course if I.m only installing one battery I lower discharge current. Had no problems with the SNA5000 so far.

Hey, I've got a LuxPower SNA 5000 with a 5kw battery and Solar Panels. 

I don't think settings are correct as it would randomly trip during loadshedding. The battery percentage is high when it trips and it trips when there is no excessive load so I'm sure it's a setting problem. I'm just not completely sure what setting to use.

If anyone could assist that would be great.

Current Settings:

@WestCoastUPS Could you perhaps advise on best settings?