Search found 14 matches

by al76
Mon, 07 May 2018, 14:17
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

I have a pip4048 battery config question I have 8 x 12v RITAH RA12-120SD configured as 4S2P for a 48v 240Ah system The battery spec sheet https://www.rpc.com.au/pdf/ritar_12V_120Ah.pdf states Float charging Voltage 13.6 to 13.8 VDC/unit Average at 25 degC and Equalization and Cycle Service 14.6 to 1...
by al76
Sun, 06 May 2018, 12:57
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

Anyway I have the replacement pip installed (day 2) and its had issues each morning. I log output from QPIGS and soon after sunrise I see a brief spike from the panels then nothing reported from panels. The battery volts reported by QPIGS seems to indicate charging is happening but the pip display ...
by al76
Wed, 02 May 2018, 06:08
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

Is it worth following this up with mpp solar or move fwd with buying another unit and have this unit repaired in Aus? I was planning on a parallel system plus I will be needing a second independent system soon anyway. I can't really advise you on such decisions. Except to say that I don't see that ...
by al76
Thu, 29 Mar 2018, 09:28
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

Is it worth following this up with mpp solar or move fwd with buying another unit and have this unit repaired in Aus? I was planning on a parallel system plus I will be needing a second independent system soon anyway. I can't really advise you on such decisions. Except to say that I don't see that ...
by al76
Wed, 14 Feb 2018, 19:17
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

I finally changed the strings this morning to 2 strings of 2 panels was 2 strings of 3. The problem persisted with the relay clicking away. After approx an hr the charging started. OK. So now we know there is definitely something wrong with your machine. This is definitely not expected behaviour. M...
by al76
Wed, 14 Feb 2018, 10:25
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

The OC voltage reported by the Pip is about 130v Once mppt kicks in with charging it drops to about 110v From this graph you can see that Volts sits about 130v until about 10am the mppt/charging kicked in. ... I turned off the solar about 4pm ( on graph you can see Volts drop to zero) to try and ch...
by al76
Wed, 31 Jan 2018, 19:09
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

It does seem that your PIP is more sensitive to high voltage than is claimed in the manual, but for all I know, they may all be like that. What are your U1 and U2 firmware version numbers? Firmware versions 72.70 and 04.12 But no matter whether the PIP is out of spec or not, there is no doubt that ...
by al76
Wed, 31 Jan 2018, 13:57
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

If the inverter is not drawing any current from the PV array, then it will be the OC voltage. If the inverter is doing maximum power point tracking, then it will be the MPPT voltage. You can tell what state it is in by looking at the PV power readout. If it's zero, it's open circuit. The OC voltage...
by al76
Wed, 31 Jan 2018, 11:41
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

Thanks again for your response. I have had this setup running for 12+ months and didn't see this behaviour last summer. Of course you didn't have too low voltage near mid-day last summer, because you have 3 panels in series. Instead you have too high voltage near dawn in winter. If you had 2 x 60-c...
by al76
Wed, 31 Jan 2018, 10:31
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

Thanks again for your response No. There will be no problem in winter with strings of 2 x 72-cell panels, no matter how cold it gets. But if you leave it with strings of 3, the problem will only get worse as the weather gets colder. The consideration with strings of 2 x 72-cells is whether, in the m...
by al76
Mon, 29 Jan 2018, 19:15
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

185 W panels are almost certainly 72-cell panels. Can you count 6 cells by 12 cells on each panel? If so, you need to rewire your PV array as 3 strings, with each string having only 2 panels in series. Yes they are 72 cell panels. The OCV is 44.3v. The problem is occurring because your PV array is ...
by al76
Mon, 29 Jan 2018, 09:24
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

Hi Anyone, I have a problem with my pip4048ms. The solar charging doesn't seem to activate until late morning and full sun. I can hear a relay clicking every few seconds. My setup is offgrid with 240aH AGM Ritar. Pip is approx 13months old. Firmware versions 72.70 and 04.12 if thats helpful Solar is...
by al76
Sat, 27 Jan 2018, 19:11
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

Another option. I'm using a rasp-pi with some custom python scripts and graphing with MRTG.
by al76
Fri, 19 Jan 2018, 05:16
Forum: The Lounge
Topic: PIP-4048MS inverter
Replies: 2236
Views: 230550

Re: PIP-4048MS inverter

Hi, I've been running a pip4048ms with 240Ah of batterys (4s2p Ritah AGM 120Ah) now for 13months. I've just notice in the last week that the solar volts soon after sunrise climbs above the 115vdc which the manual indicates PV Array MPPT Voltage Range 60~115Vdc . During this approx 2hr period there i...