Pcm-3012 finally installed

Submitted: Sunday, Dec 01, 2013 at 14:05
ThreadID: 105332 Views:2301 Replies:3 FollowUps:3
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Hi all,

Is this normal?

Thanks for your help
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Reply By: Member - Frank P (NSW) - Sunday, Dec 01, 2013 at 16:18

Sunday, Dec 01, 2013 at 16:18

You say in the vid you have a load connected, but I don't see any wires going into the load terminals.

Is the load going to the battery terminals and you have no battery connected?

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AnswerID: 522419

Follow Up By: Sleeprequired - Sunday, Dec 01, 2013 at 16:31

Sunday, Dec 01, 2013 at 16:31
I have a 2kw inverter and tye guy who hooked it up didn't hook that up because he was worried it couldn't take it. Not sure if it was that or the cheapy watt meter I had installed. In hindsight I really didn't need the meter that MPPT tell me everything I need to know.

Yeah so I had a coffee machine just switched on as well as a 50w charger

The batteries were full (2x120ah) and I was trying to take some charge out of them so I could see what the new panels and reg were doing but to be honest I never got it below 13.5.

A good problem to have for sure.

So basically it was working ok, then it was doing that, then it was just taking say 50w while the inverter was on and then when I switched the inverter off it went to 0.
FollowupID: 803481

Reply By: Brian 01 - Sunday, Dec 01, 2013 at 22:07

Sunday, Dec 01, 2013 at 22:07
A circuit diagram of all of the actual connections that you have made may assist in getting a diagnosis as it is not possible to see what you have in the video.
AnswerID: 522438

Follow Up By: Sleeprequired - Sunday, Dec 01, 2013 at 22:18

Sunday, Dec 01, 2013 at 22:18
i'm not technical, i got a caravan guy to install it i just thought people might know what's normal for this mppt controller... it's a pretty common one available and it's been mentioned here before

does the absorption phase do this on regs? is this totally abnormal?

it was charging steadily in the morning when the sun came up and then went into float mode where it was showing 50w.

then in the afternoon after using some power i noticed it was doing that. After a while it went into float mode again and settled down...

I was running a 1700w coffee machine and a battery charger, it was also 30c today in case that might have something to do with it.

I have 2x150w 12v (18.5v nominal voltage? )solar panels (in parallel) running into 2x120ah batteries. There is a matson battery charger for shore power, a 2kw pure sine wave inverter.
FollowupID: 803516

Follow Up By: Brian 01 - Sunday, Dec 01, 2013 at 23:33

Sunday, Dec 01, 2013 at 23:33
I have never seen a controller behave in that fashion.
They can be a bit edgy in scattered cloud conditions, but generally not to that extent.
FollowupID: 803520

Reply By: Sleeprequired - Wednesday, Dec 04, 2013 at 17:12

Wednesday, Dec 04, 2013 at 17:12
i've contacted the company and they think (as best i can tell from their differing theories and explanations) that it's a display issue brought on by low voltage or high current draw. In other words, the fluctuation displayed is not real and that the charger is functioning normally.

Does that sound quite possible that the display will be reporting one thing while the controller is doing another.
AnswerID: 522558

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