Hi.
The reading on the wbj on my sons classic 150 appears to be "stuck" at 100%.
Any ideas why the soc is not changing?
It goes through bulk and absorb and gets to float.
I did a hydrometer reading on his L16 trojans and they were sitting on 1265 sg.
They have 2200 watts of array at the moment and peak output is between 50-60 amps.
The classic indicates it is producing 4.5 - 7.5 kw a day depending on their usage.
As days are getting colder the power usage is reducing.
The trojans are 24 volt bank and 870 amp hours.
It is setup the same as mine here, but the two show increases and decreases in the soc during the day and night.
Soc in the morning on Doug's shows 100% which should be approx 80 -85%.
Any ideas?
The purple cable has a 2ft extension to it, but so do both of mine.
BTS installed?
Working?
Temp comp set to? Reference Temp? working?
Range of ambient temps over the day and Night?
Batt temps? steady? HI? Low?
Brand / model of batts?
Manufact. Charge specs ? settings used?
Quote from: russ_drinkwater on April 10, 2017, 05:12:46 PM
Hi.
The reading on the wbj on my sons classic 150 appears to be "stuck" at 100%.
Any ideas why the soc is not changing?
It goes through bulk and absorb and gets to float.
I did a hydrometer reading on his L16 trojans and they were sitting on 1265 sg.
They have 2200 watts of array at the moment and peak output is between 50-60 amps.
The classic indicates it is producing 4.5 - 7.5 kw a day depending on their usage.
As days are getting colder the power usage is reducing.
The trojans are 24 volt bank and 870 amp hours.
It is setup the same as mine here, but the two show increases and decreases in the soc during the day and night.
Soc in the morning on Doug's shows 100% which should be approx 80 -85%.
Any ideas?
The purple cable has a 2ft extension to it, but so do both of mine.
Russ
Didn't you have an issue with the WBJr before?? Don't remember ever seeing a conclusion to it.
I'd first look at the led on the WBjr is is slowly flashing??
The wbj is slow flashing as normal.
Yeah I had two die in different systems and ryan offered to replace them after sending photos. As it was quicker I bought 2 new ones locally.
Had no further problems with the ones on my two systems here.
They both percentage up and down in regard to SOC.
I have not been back over to sons place. Sg is 1275 after sunset and classic indicates 4.8kw on the screen, so they are getting about the right charge for the amount of usage. Goes to float every day after lunch.
L16 trojans (8 x) and all charge specs are set to trojans recommendations.
Temps range from 20-28 deg C these days outside.
Inside where the cells are sits on around 23 deg.
BTs is hooked up, will have a look today when I go over there.
Quote from: russ_drinkwater on April 12, 2017, 05:31:05 PM
The wbj is slow flashing as normal.
Yeah I had two die in different systems and ryan offered to replace them after sending photos. As it was quicker I bought 2 new ones locally.
Had no further problems with the ones on my two systems here.
They both percentage up and down in regard to SOC.
I have not been back over to sons place. Sg is 1275 after sunset and classic indicates 4.8kw on the screen, so they are getting about the right charge for the amount of usage. Goes to float every day after lunch.
L16 trojans (8 x) and all charge specs are set to trojans recommendations.
Temps range from 20-28 deg C these days outside.
Inside where the cells are sits on around 23 deg.
BTs is hooked up, will have a look today when I go over there.
Is it showing a negative Net AH reading early in the morning? Assume the Battery Capacity AH setting is correct and check the other WBjr setting.
Some suggestions...
The WBjr is connected the correct way around on the shunt? If not then discharging will be seen as charging current and the SOC will stick at 100% with fully charged batteries when charging is complete. Since float voltage resets SOC to 100% it will stay there until next morning when charging will be seen as discharging and SOC will reduce until FLoat resets it to 100%
The signal wire into AUX2 can be a problem. If you have extended it then it needs to be properly soldered connection. Multicore cable too as a crack/split in a single core means problems.
Make sure that little grub bolt in the AUX2 connector is properly tight.
Also ensure its not accidentally placed in AUX1 or in one of the -ve connectors.
dgd
I have soldered the extension to the wire and covered it.
The aux2 screw is tight.
Not in aux1!
I will check it again in the am as it is 5pm atm here.
Battery amp hours are correct.
WBJ is correct in connection to shunt.
Just rang son and is 25.3 volts and showing 100% and has taken 7kw in today.
And the classic did hit float today.
I checked the battery temp this morning at 9am and it was 24.2 deg C.
Ok, have a look at the SOC when the Classic is in BULKMPPT charging mode. Is it still on 100% or at a lower value and is it increasing or decreasing?
Is there any data coming from the WBjr? can you see the remote temperature as its a temp sensor on the WBjr. Is it a valid reading?
Also are the two bolts holding the WBjr to the shunt nice and tight so that there is no movement of the WBjr on the shunt
dgd
Interesting.... But annoying I'm sure...
At night, have him look at the A-H remaining and see if it changes at ALL.
A-H Remaining is what is used to calculate SOC%.
boB
Stays at 100% overnight.
Stainless screws are very snug.
Put in 7.4 kw of charge yesterday according to the boy.
I am going to have a look at the bulk and float today if I get a chance.
Strange one of my units have a brain flip yesterday and went to float after only 1.1 kw of intake!
And the other one did 6.4 for the day.
Are they female?
you have checked that the Classic has AUX2 set up for WBjr and that it is not turned off?
If you are sure everything else checks out then try removing the WBjr from the shunt and reconnecting it reversed.
How much KWh power input there is probably has nothing to do with this problem.
dgd
Does the remaining amp-hours change during the night ????
?????
Stays at 100% over night.
Found the problem with mine!
Battery to regulator switch was fried on one bank.
Replaced it yesterday afternoon, but I really need to upgrade those isolators switches as the amps are too high.
Both my regs are now in bulk at 6.45 am, but only 6 amps each coming in at the moment.
If I reverse the shunt it reads negative, but will shows a fluctuation in % as it should!
I am confused, lol.
Sorry Russ but your reply only makes this issue more confusing.
So you have this identical SOC not moving issue with more than one system since you say you have resolved mine
Also what does this mean Battery to regulator switch was fried on one bank
Are you using ganged breakers between your battery bank and Classic,if so why? there are proper single pole Carling breakers easily available for this task.
or are you referring to another device? regulator?
How any of this could possibly cause the Classic to keep operating (charging) nomally yet cause the WBjr to not work has me confused, doesn't seem logical.
Please correct me if I am wrong.
You say when you reverse the shunt it reads negative. What reads negative?
dgd
Sons system.
The readout from the whiz bang shows a negative figure. (- 15.3 amps)
But it also will allow the soc to fluctuate while connected in reverse (yes it confuses me as well)
My mate offgridqld was here at easter and even he could not come up with a cure! :o ;D
There is a toggle 200 amp breaker switch between the 150 and the battery bank.
It is weird and sg in cells is great and classic charges fine it is just that soc readout from the wbj.
Sons system is same config as mine with the exception of the batteries. And a wind turbine.
This problem continues.
My system.
My strange SOC readings and jumping to float on one bank was caused by a (fried, cooked, overheated, buggered, knackered )
breaker switch between one classic and its bank of batteries. I have replaced it and am looking for some heavier duty breakers atm.
Sorry if I am confusing!
My problem is resolved.
Does your buggered 200 amp switch say "DC" or made in China" China has the ability to create very large amperage breakers with the same technology that us Americans can only do half the ratings for. They are truely amazing! Cheap too!
Unsure Robin, possibly.
It is used on tractors here to isolate battery from starter motors by some people.
Errr, was not that cheap :(
I have not got to the sons place for over a week now as I have been sawing 8ft fences posts for a set of cattle yards and contractor
with heavy duty hydraulic digger (rock under top 12 inches of soil) is coming this monday.
He has not complained about lack of charge in the trojans so I am assuming everything else aside the sg levels of the cells are good.
Quote from: russ_drinkwater on April 23, 2017, 12:05:41 AM
...
... as I have been sawing 8ft fences posts for a set of cattle yards and contractor
with heavy duty hydraulic digger (rock under top 12 inches of soil) is coming this monday.
you are putting the posts in ground as mountings for PVs? Getting them off that tin roof you told us about last year? That should be easier to get at the PV wiring snd combiner boxes
Dgd
Lol, no mate. The posts are for new cattle yards!
On that subject I was on the roof yesterday cleaning the panels again as the cats seem to think they are an adventure playground!
Too many fruit trees around the houses to have ground mount solar arrays as well as the house being low against the side of a hill
for storm protection! Arrays on the roof is the best solar gain position by far.
There is a great position at the back of the house on top of the hill, but the cable run is approx 1000 meters away! :o :(
With a tracker system I would have usable solar input from 0500 to 1900 hrs in summertime, if arrays were on the hill that is.
This weekend I will be having a look at sons system again and making a few changes.
Quote from: russ_drinkwater on April 26, 2017, 04:52:07 PM
Lol, no mate. The posts are for new cattle yards!
Oops, sorry I read that wrong, I though they were posts for a cattle yard that were instead being cut and put into ground - perhaps for panel mountings...
Sounds like a lot of work, have fun :)
dgd
I have about 6 projects to finish while winter is here including adding the last of the panels to our 2 arrays here at the house.
Caretaker has vacated the hut on one property and so I will finish off the solar system he was mucking around with on
the cottage. Have enough exide 1330 amp cells left for a 12 volt system there as well as spare 150 reg and latronics inverter.
Unsure what the voltage max output on the array is he would not listen to me when I told him the 18voc panels may not be enough
to equalize a 12 system battery bank properly. Multimeter will tell the story after I ping off the $40 chinese regs he was using!
[quote author=russ_drinkwater link=topic=3695.msg35778#msg35778 date=1492032665
Goes to float every day after lunch.
Russ, What are you feeding it? Could be dietary ;D.
Sorry, I just couldn't help myself.
Cabbage mate!
So much gas it makes them float!
Boom boom :o ;D ;)