15 minutes ago, Coulomb said:

Is setting 05 (battery type) set to USE? Otherwise, you can't change some settings, such as setting 26 (Absorb/Bulk/CV battery voltage).

Coulomb I'll check as soon as I get to my home and come back to You.

Thanks for your willingness to assist

Coulomb. Setting 5 was indeed wrong. Set it to USE and all was 100%

Thanks again !!!!👍

On 2019/10/23 at 6:24 AM, Coulomb said:

Actually, Weber and I have finally acquired firmware version 74.40, and we have promised to patch any Axpert 48 V 5 kVA firmware that is for a machine with a 145 V max SCC. The only thing is we didn't say how soon 😉 I'm busy with other things at present. So you won't have to live with it forever.

Hi Coulomb, I'm following up on the firmware you said may be available sometime.  You mentioned that you were doing it but it was not for the feint hearted?!  In your opinion, is it a must??

On 2021/04/30 at 8:00 PM, Bushtracker said:

Hi Coulomb, I'm following up on the firmware you said may be available sometime.

Patched firmware version 74.40e was made available over a year ago.

On 2021/04/30 at 8:00 PM, Bushtracker said:

You mentioned that you were doing it but it was not for the feint hearted?!  In your opinion, is it a must??

It's not terribly difficult updating firmware, but there is a very small chance of bricking your inverter (mainly because the communications boards are a bit marginal, and the opto-isolators degrade with age).

In my biased opinion, yes, patched firmware is a must, even if just for fixing the premature float bugs. 

2 hours ago, Coulomb said:

In my biased opinion, yes, patched firmware is a must, even if just for fixing the premature float bugs. 

Thanks very much for this @Coulomb, I will let you know how I get on, in due course!

Dear Mr. Bush,

Trust you are good. 

I have 5.2kW Solar panel with 200AH flooded battery. Have a query similar to what Mr. Coulomb had...i have kept the output setting as 'SBU' and 'Only solar' charge setting as i want to save my utility cost.

I have kept 'back to battery mode' setting as 56V and 'back to utlity mode' setting as 46V. Question is that during day time also if Solar drops due to cloud/less sunshine battery takes over it and gets it charge till the set value of 56V. With a cloud covering this happens on and off that is charging/discharging pattern. I have kept these settings to save my utlity cost as much, but i am curious that does even charging/discharging for 10 ~15min also will affect my battery cycles/life ? Like these days with cloudy weather it happens for 6 to 7 times also in a single day.

If yes, what is the suggestion then to have a good saving in utility cost along with having a reasonable 2hrs backup atleast in loadshedding times.

Thanks

Syed Rehan

 

On 2019/10/20 at 11:29 AM, Bushtracker said:

Hello everyone, I am a newboy to this discussion and world of renewable energy. I have recently had installed a Mecer Axpert 5kVA inverter/charger, model SOL-I-AX-5P, with 4 x 200  AGM Vision batteries, which started off as simple backup, but quickly grew to a ‘semi-off grid’ system when we added an array of 6 x 340 Watt PV panels.

I was led to believe this inverter was a true hybrid however soon found out that instead of sharing the loads it switched from battery mode to utility (line mode) when the set criteria were encountered.

I am very afraid with this sort scenario, that I maybe abusing my batteries and am relying totally on the charge controller to regulate the batteries in the best way.

The Watch Power software ver 1.13 is running nicely where I can monitor the ‘invisible’, and I have changed the following settings from the default factory settings on advice from a colleague.

·        Setting 01: SbU – ‘Solar first’

·        Setting 12: 48 v – Voltage point back to utility

·        Setting 13: 54 v – Voltage point back to battery mode

·        Setting 16: OSO – Only solar energy to charge the batteries

 

The rest of the settings are on default.

I would be most grateful for comments and advice from those who have experience with this inverter, especially on the settings and whether there are other settings that require adjustment?

I acknowledge that my array of panels maybe a little under-powered but am retired and happy to manipulate the use of the heavy-use appliances, and accept that on an overcast day we will be paying the utility mainly.

 

 

Good afternoon on the ground I have 3kva mecer inverter and x2 455w solar panels including x2 12v 100ah dc31 batteries the problem I have it doesn't charge midday it only changes when the sunrise and sundown please help me with settings 

On 2021/04/25 at 2:25 PM, Coulomb said:

Do you mean that pressing the enter / ⏎ button for more than 3 seconds does nothing?

Perhaps that button is dirty / worn out? Strange that it would affect both inverters, though.

 

@Marky Mark, you have quoted a post of mine from over a year ago, but not added any of your own text. Did you mean to add a question or comment?

Edited October 18, 20223 yr by Coulomb

can setting 28 be changed from parallel to single output without using monitoring software.

the inverter cant log into PC monitoring SW remains in error state.

Regards

AndrewF

2 hours ago, AndrewF said:

can setting 28 be changed from parallel to single output without using monitoring software.

the inverter cant log into PC monitoring SW remains in error state.

Regards

AndrewF

@AndrewF Yes it can.This can only be changed with the inverter switched in the off position. The rocker switch at the bottom of the inverter.Press enter button for 5 sec no select 28 with up or down button. Select single.

@everyone Can someone please tell me what the different options on Setting 16 mean?

OSO = Only Solar to charge battery

SNU =? 

CUt =? 

CSO =? 

4 minutes ago, Rosa said:

@everyone Can someone please tell me what the different options on Setting 16 mean?

OSO = Only Solar to charge battery

SNU =? 

CUt =? 

CSO =? 

CSO as indicated is never to use UTIL FOR CHARGING only PV. 

CUT to use only grid to charge. 

SNU to use PV when available and grid other times. 

I have an old Mecer Sol-i-ax-5m inverter, what setting controls the recovery voltage i.e. the voltage at which point the inverter turns back on after a low battery voltage condition? Mine turns off at 48V but only comes back on at 52V even with full sun on the panels. I'd like it to come on at 50 or 51V especially if there's good sun input.

5 hours ago, Brushless said:

I have an old Mecer Sol-i-ax-5m inverter, what setting controls the recovery voltage i.e. the voltage at which point the inverter turns back on after a low battery voltage condition? Mine turns off at 48V but only comes back on at 52V even with full sun on the panels. I'd like it to come on at 50 or 51V especially if there's good sun input.

I have it as setting 13. The back to battery setting. I think it must at least be 2V higher than the cut off. Setting range for 13 is 48-58V.

This applies if SOL or SBU is selected in setting 01.

Good day how are you

 

 

On 2024/01/03 at 6:08 PM, Brushless said:

Mine turns off at 48V but only comes back on at 52V even with full sun on the panels. I'd like it to come on at 50 or 51V especially if there's good sun input.

That 4.0V difference is fixed in factory firmware. If you have an LFP battery, consider fully patched firmware (LFP flavour) if it is available for your model. 

https://forums.aeva.asn.au/viewtopic.php?t=4332#firmware

Edit: If it's a lead acid battery, then regularly running it down to the cut-off voltage is very bad for the battery. In that case, the solution is not to let it run down so low. Then setting 13 (back to battery) can take effect. 

Edited August 7, 20241 yr by Coulomb

Good Morning All.

@Coulomb This thread seems to be the closest I can find to a similar problem I am having.

Previous Setup:
12 280ah 12V Gel - 4 batteries wired together into 3 banks connected to bus bar, connected to 5Kva Mecer SOL AX Inverter. 6 x 600W PV Wired in 2 banks of 3 panels each.
The system was set as SBU (Solar | Battery | Utility)
AGn for Battery Type
54.6V Max Charge with a 46V Cutoff to change over to Utl (Utility)

The system was working perfectly with the invertor automatically switching over to Utl when batteries are discharged and switching back to the invertor when the sun came up.

I recently upgraded my battery to a 9.2Kva FiveStar Lithium.
Settings that were changed:
05 Battery Type from Agm to USE (User Defined)
[12] Point Back Voltage to Utl 46v 
[13] Point Back Voltage to Battery 54v 

The issue I am having now is when the sun has set and the load is on Battery and batteries reach their cutoff voltage, the invertor no longer changes over to Utility supply, nor does it switch back to invertor the next morning.

I am no electrical expert in this matter, but think I can follow manuals and instructions pretty well. I hope I am just being an idiot and have a simple setting I need to change.
Any assistance in this matter would be greatly appreciated.

Thank you kindly

Ty
 

On 2024/10/24 at 6:27 PM, TyGFX said:

The issue I am having now is when the sun has set and the load is on Battery and batteries reach their cutoff voltage, the invertor no longer changes over to Utility supply, nor does it switch back to invertor the next morning.

46 V is very low; presuming that the Fivestars are 16S, that's 2.875 VPC average. I would not let LFP get below 3.0 VPC, preferably not much below 3.2 VPC. Perhaps this is  preventing the inverter from switching the load to AC-in (or blended), perhaps because the Fivestar BMS is cutting off. Even though it states a really wide voltage range; scarily wide.

Also consider going back to battery at 53 V; I use that voltage on my home made 16S LFP battery. I go back to grid at 51 V, actually effectively 51.3 V because of the interaction with the cut-off voltage.