PIP-4048MS and PIP-5048MS inverters

non-EV Solar, Wind and other renewable power sources
non-EV batteries and other energy storage stuff
Forum rules
Important!
This forum is for discussion of Non-EV matters.
User avatar
coulomb
Site Admin
Posts: 3415
Joined: Thu, 22 Jan 2009, 20:32
Real Name: Mike Van Emmerik
Location: Brisbane
Contact:

Re: PIP-4048MS inverter

Post by coulomb » Tue, 09 Oct 2018, 09:39

birdibird wrote:
Tue, 09 Oct 2018, 09:11
How do you mean, with no power applied? PV power? If there is no PV power, the MG is off, because there is no battery connected.
It surprised me too. It seems to be via a normally closed contact, so yes when the power is completely off, I'd expect neutral and earth to be connected internally.
The mode it is in is a special 'battery mode', as it bypasses a battery.
I assume that it's still treated as a battery mode, for the purposes of the inverter neutral to earth relay.
After reading a lot and speaking to various people I interconnected earth and neutral in my switchbox and then it worked.
That's weied, since by my understanding, these two should have been connected internally anyway. Maybe the EVSE or charger gets spooked before the inverter proper powers up; perhaps that could explain it.
Learning how to patch and repair PIP-4048 inverter-chargers and Elcon chargers.

birdibird
Noobie
Posts: 7
Joined: Tue, 11 Sep 2018, 18:17

Re: PIP-4048MS inverter

Post by birdibird » Tue, 09 Oct 2018, 09:49

coulomb wrote:
Tue, 09 Oct 2018, 09:39
birdibird wrote:
Tue, 09 Oct 2018, 09:11
How do you mean, with no power applied? PV power? If there is no PV power, the MG is off, because there is no battery connected.
It surprised me too. It seems to be via a normally closed contact, so yes when the power is completely off, I'd expect neutral and earth to be connected internally.
The mode it is in is a special 'battery mode', as it bypasses a battery.
I assume that it's still treated as a battery mode, for the purposes of the inverter neutral to earth relay.
After reading a lot and speaking to various people I interconnected earth and neutral in my switchbox and then it worked.
That's weied, since by my understanding, these two should have been connected internally anyway. Maybe the EVSE or charger gets spooked before the inverter proper powers up; perhaps that could explain it.
I mostly connect the car only after the inverter has powered up.
I measured it. There is no connection at the inverter between earth and neutral...

User avatar
coulomb
Site Admin
Posts: 3415
Joined: Thu, 22 Jan 2009, 20:32
Real Name: Mike Van Emmerik
Location: Brisbane
Contact:

Re: PIP-4048MS inverter

Post by coulomb » Wed, 10 Oct 2018, 07:13

Savage1ZA wrote:
Sun, 07 Oct 2018, 01:37
Is there any new / additional information available about the error 51?
We have continued this discussion on the Power Forum. To summarise,
  • Error 51 is not restartable, whereas "ordinary overload" (error 7) is restartable.
  • So this is a "never exceed" situation, protecting the circuitry from catastrophic failure.
  • This error seems more common in South Africa, where mains surges seem more prevalent than elsewhere.
  • My latest suspect is the MOV (Metal Oxide Varistor), associated with the output of the inverter.
From http://www.resistorguide.com/varistor/ :
MOVs degrade when exposed to repeated surges. After each surge the MOVs clamping voltage moves a little lower, how much depends on the joule rating of the MOV in relation to the pulse. As the clamping voltage falls lower and lower, a possible failure mode is a partial or complete short circuit, when the clamping voltage falls below the protected line voltage.

It goes on to say that this situation could lead to a fire hazard. Fortunately, the PIP/Axpert firmware is monitoring the peak current, and when it exceeds a threshold (it seems that the threshold starts at 40 A instantaneous, and increases to 80 A instantaneous if all goes well), fault code 51 (error 51) is issued, saving the electronics from catastrophic failure, possibly including fire.

MOVs have a marked negative temperature coefficient. As temperature increases, their threshold voltage decreases, and their leakage current increases. Both these effects would lead to the error 51 coming up more frequently when the inverter is hot, e.g. due to high solar charge current during the hotter part of the day.

Edit: Note please also @JvdSpoel and @ejb, since my guess has changed.
Learning how to patch and repair PIP-4048 inverter-chargers and Elcon chargers.

User avatar
weber
Site Admin
Posts: 2492
Joined: Fri, 23 Jan 2009, 17:27
Real Name: Dave Keenan
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by weber » Wed, 10 Oct 2018, 16:38

Release Version of Patched Firmware 72.20c for some PF1 models with the 64V option

[Edit1: On 12-Oct-2018 we replaced beta 72.20b here, with beta 72.20c that has a new load-control or go-to-standby command.]
[Edit2: On 11-Nov-2018 we replaced beta 72.20c here, with release 72.20c. The only change was the first letter of the version number (from B to L).]

This patched firmware fixes the premature-float bugs in the manufacturer's firmware for the PIP-5048MS, Axpert MKS 5K-48 (PF1 with 64V option) and equivalents. i.e. machines supplied with main firmware version 72.xx where xx ≤ 30. It also contains our Dynamic Current and Load Control (DCLC) and AussieView™ additions, and we have provided a version with our voltage and current threshold changes for LFP cells. i.e. It has the same functionality as 73.00c (PF0.8) except that in the LFP version, the minimum tail current to go from absorb to float has now been reduced from 5 A per machine to 3 A per machine.

Finally, 72.20c also has Dynamic Load Control (DLC). This allows you to send a serial command (MNCHGC0497) to force a machine into standby mode, reducing its power consumption (in our test with 2 parallel machines, from around 60 W to 11 W per machine). This is similar to turning off the bottom switch, except the processor keeps running so it can accept other commands, such as MNCHGC0498 to return it to normal operation. With no PV or AC input, turning off the bottom switch still powers everything down after about 20 seconds, including the processor. The zero in these commands can be replaced with other machine numbers in a parallel system.

Thanks go to forum contributors and friends @6mdx and @Monkeytom for the loan of two PIP-5048MS inverters for testing. Also the anonymous benefactor who sent us the firmware update file. You know who you are. Many thanks to you all.

Here are the zip files with all the software you need, to reflash your PIP-5048MS or Axpert MKS 5K-48 (PF1 with 64 V option), and to revert to factory 72.20 firmware if required.


Note: This firmware is only suitable for the 48 V models with a single low-voltage MPPT and a power factor of 1 (5kW/5kVA) and the 64 V maximum battery voltage option. It is not suitable for the older models with a PF0.8 rating (4 kW/5 kVA), and not PF1 models without the optional 64 V hardware, and not models with a maximum PV array open circuit voltage greater than 145 V DC. Parallel or phased machines must all run the same patched firmware version.

For lithium ferrous phosphate (LFP) (16S or 15S)
dsp_LF1_72.20c pf1 64V.zip
(1.93 MiB) Downloaded 8 times

For lead acid (24S), lithium cobalt-blends (LCO, NMC, NCM, NCA) (14S) and lithium titanate (LTO) (21S)
dsp_LC1_72.20c pf1 64V.zip
(1.93 MiB) Downloaded 15 times

See these reflashing instructions but ignore the zip files there.

It should go without saying that you use this at your own risk.
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).

Savage1ZA
Noobie
Posts: 3
Joined: Sun, 07 Oct 2018, 01:31
Real Name: Chris knipe

Re: PIP-4048MS and PIP-5048MS inverters

Post by Savage1ZA » Wed, 10 Oct 2018, 18:28

@coulomb started to open up and test various components inside the inverter today as per the service manual. The entire battery side bus of the main board, is effectively toast and blown :shock: Right up to (and including the) PWM CNTL.

There is absolutely NO visible damage / burns anywhere, but testing the components resulted in the one failure after the next... Right on Axpert for the Error 51, it is indeed an indication of something rather seriously wrong with the Inverter.

Needless to say, I am in the market for a new main board, and failing that, a new Inverter.

User avatar
coulomb
Site Admin
Posts: 3415
Joined: Thu, 22 Jan 2009, 20:32
Real Name: Mike Van Emmerik
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by coulomb » Wed, 10 Oct 2018, 18:58

Savage1ZA wrote:
Wed, 10 Oct 2018, 18:28
coulomb, [ I ] started to open up and test various components inside the inverter today as per the service manual. The entire battery side bus of the main board, is effectively toast and blown :shock: Right up to (and including the) PWM CNTL.
? But didn't you say that it recovered and never showed the problem at night? It sounds very suspicious that every component you test is faulty, and yet there is no visible sign of damage.

It sounds like you have been misinterpreting the service manual checks. Many of those are "resistance" checks, which are only valid with one model of multimeter. I use those ones more as a guide than as gospel. The diode measurements are far more useful.

Also, I would not expect the battery side components to be faulty, though it is possible that they failed as well as the inverter components, buck transistors, and battery-side to high-side full bridge.

I still think it's worth replacing the MOVs. I'd replace them all, since I suspect they all will have seen much the same overload events. It may well be that all your semiconductors are fine, saved by the Firmware calling fault code 51.
Learning how to patch and repair PIP-4048 inverter-chargers and Elcon chargers.

User avatar
coulomb
Site Admin
Posts: 3415
Joined: Thu, 22 Jan 2009, 20:32
Real Name: Mike Van Emmerik
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by coulomb » Wed, 10 Oct 2018, 20:02

The MOVs seem to be Brightking brand, part number 561KN20. Specifications here; basic specs:
350 VAC, 504-616 V for 1mA, clamp at 920 V and 100 A, 280 J at 2 ms. 20 mm diameter, thermal fuse protected.

The nearest I can find in a quick search is this part from Mouser (comes up for me in AU$; use the Mouser part number 576-TMOV20RP385E in your local Mouser web page). Basic specs:
385 VAC, 558-682 V @ 1mA, clamp at 1025 V and 100 A, 300 J at 2 ms. 20 mm diameter, thermal fuse protected.

[ Edit: this part (Mouser part number 576-TMOV20RP320E) has lower voltages, and may be more suitable:
320 VAC, 459-561 V for 1mA, clamp at 840 V and 100 A, 270 J at 2 ms, 20 mm diameter, thermal fuse protected.
]

Image
Learning how to patch and repair PIP-4048 inverter-chargers and Elcon chargers.

Savage1ZA
Noobie
Posts: 3
Joined: Sun, 07 Oct 2018, 01:31
Real Name: Chris knipe

Re: PIP-4048MS and PIP-5048MS inverters

Post by Savage1ZA » Wed, 10 Oct 2018, 20:21

coulomb wrote:
Wed, 10 Oct 2018, 18:58
Savage1ZA wrote:
Wed, 10 Oct 2018, 18:28
coulomb, [ I ] started to open up and test various components inside the inverter today as per the service manual. The entire battery side bus of the main board, is effectively toast and blown :shock: Right up to (and including the) PWM CNTL.
? But didn't you say that it recovered and never showed the problem at night? It sounds very suspicious that every component you test is faulty, and yet there is no visible sign of damage.
That's correct yes. It only showed the error during the day, and on warm days. It's not every single component, but it is a fair amount of them... A summary (posted extensively about this on the other forum)...

Main MOSFETs:
Resistance GS: 11.7K (fine). GD 130k (manual states 250k?), DL O/L Considering I get 130k across ALL the MOSFETs and not one, I am going to assume a reading of 130k instead of 250k is sufficient
Diode: SD 0.43V EXCEPT Q14 where I get a O/L This is definitely a faulty MOSFET.

Drivers:
Q46, Q48, Q41, Q43 Resistance BE 26M (manual states 420k), BC 26M (manual states 420k), CE 30K (correct)
Q46, Q48, Q41, Q43 Diode BE 0.6V (all fine), BC 0.6V (2 fine, 2 dead), CE (all busted)
Q15, Q16, Q41, Q43 Resistance BE 26M (manual states 420k), BC (26M (manual states 420k), CE All over (should be 30K)
Q15, Q16, Q41, Q43 Diode BE 0.6V (all fine), BC 0.6V (2 Fine, 2 busted), CE (all busted)

A few resistors also faulty

Q60/Q61 Mosfets blown

I've pretty much given up measuring at this stage... The part (component) numbers in the service manuals, matches the part (component) numbers in the inverter, so I'm fairly sure I have the correct manuals for the inverter...

dinu_tiberiu_george
Noobie
Posts: 7
Joined: Sun, 08 Oct 2017, 01:11
Real Name: Dinu Tiberiu George

Re: PIP-4048MS and PIP-5048MS inverters

Post by dinu_tiberiu_george » Wed, 10 Oct 2018, 21:10

For 5048MS PF1 not 64v model do you have any patch?
Is there any way to pass beyond the 58.4 v bulk/absorb voltage? I see in the manual the cut-off voltage of 60v. Is there any risk if I charge the battery with an external charger, at let say 59.5 v?

6mdx
Groupie
Posts: 32
Joined: Tue, 23 May 2017, 21:17
Real Name: Robert Black
Location: Lismore

Re: PIP-4048MS and PIP-5048MS inverters

Post by 6mdx » Thu, 11 Oct 2018, 03:20

Hello weber and coulomb, thanks for your efforts on the new Beta Version of Patched Firmware 72.20b for PF1 models with the 64V option.

Good fast work. I will try it today.

Did you get the parallel boards from Tom? If not mine have arrived.

Cheers Robert

User avatar
weber
Site Admin
Posts: 2492
Joined: Fri, 23 Jan 2009, 17:27
Real Name: Dave Keenan
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by weber » Thu, 11 Oct 2018, 06:10

dinu_tiberiu_george wrote:
Wed, 10 Oct 2018, 21:10
For 5048MS PF1 not 64v model do you have any patch?
Is there any way to pass beyond the 58.4 v bulk/absorb voltage? I see in the manual the cut-off voltage of 60v. Is there any risk if I charge the battery with an external charger, at let say 59.5 v?
Hi Dinu. We don't know. Any time spent at a higher than usual battery voltage will tend to age the capacitors more rapidly and increase the risk of MOSFET failure. Short periods above 58.4 V but below 60 V should be OK.

I assume this is for equalisation of lead acid cells approximately once a month. If so, it would be best if you could disconnect the PIP-5048MS while the external charger is in use.

It is possible that the 73.00c (pf0.8) firmware might work on a PF1 not-64 V model, but it may limit power to 4 kW. We have not tried this and do not know whether it might have other bad side-effects that will destroy the inverter.
It is possible that the 72.20c (64 V) firmware might work on a PF1 not-64 V model, but it will probably not protect the inverter against excursions to high battery voltages, and you should be very wary of using any setting above 58.4 V, and certainly not above 60 V. We have not tried this and do not know whether it might have other bad side-effects that will destroy the inverter.

I thought that all PIP-5048MS from MPP Solar came with the 64 V option. If so, the label on the side should say "Model: PIP 5048MS(64V)". Also, the 64V models have main firmware versions 72.xx where xx ≤ 30, while the not-64 V models have main firmware versions 74.xx.
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).

User avatar
weber
Site Admin
Posts: 2492
Joined: Fri, 23 Jan 2009, 17:27
Real Name: Dave Keenan
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by weber » Thu, 11 Oct 2018, 06:30

6mdx wrote:
Thu, 11 Oct 2018, 03:20
Hello weber and coulomb, thanks for your efforts on the new Beta Version of Patched Firmware 72.20b for PF1 models with the 64V option.

Good fast work. I will try it today.

Did you get the parallel boards from Tom? If not mine have arrived.

Cheers Robert
Thanks Robert. We transferred the parallel boards from my 4048s. We would not have posted the firmware as beta without testing parallel operation. As it was, we found a bug when we did so, but we eventually tracked it down and fixed it.

I have belatedly added an acknowledgement of your contribution, to the firmware post above, after I was reminded that it was you who first proposed to loan us a PIP-5048MS so we could test our patches. And it was you who got Monkeytom involved, when his inverters arrived before yours. Thanks for that. And thanks for your upcoming beta testing.
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).

6mdx
Groupie
Posts: 32
Joined: Tue, 23 May 2017, 21:17
Real Name: Robert Black
Location: Lismore

Re: PIP-4048MS and PIP-5048MS inverters

Post by 6mdx » Thu, 11 Oct 2018, 06:51

Hey weber , glad it all worked out. I installed the new lfp patch this morning on single inverter. The second inverter is still in its box. All seems to be working, if only I had some sun.

Love Aussieveiw. Thanks
Robert

6mdx
Groupie
Posts: 32
Joined: Tue, 23 May 2017, 21:17
Real Name: Robert Black
Location: Lismore

Re: PIP-4048MS and PIP-5048MS inverters

Post by 6mdx » Thu, 11 Oct 2018, 08:05

Now that I have moved from PWM 5048 to MPPT 5048, I have a new dilemma.
My 60 cell panel have open circuit voltage of 37.
2S is the current configuration open circuit is 74 V, but under load this is 55 to 62 volt.

5048 MPPT range is 60 to 115V, with max PV of 145V.
Today with heavey cloud the PV voltage is around 55V. And very little current

Should I suck it up and reconfigure to 3S?
Will it make a worthwhile difference.

Ps my panels are all earthed as per standard.

TIA
Robert.
Last edited by 6mdx on Fri, 12 Oct 2018, 04:31, edited 1 time in total.

User avatar
weber
Site Admin
Posts: 2492
Joined: Fri, 23 Jan 2009, 17:27
Real Name: Dave Keenan
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by weber » Thu, 11 Oct 2018, 13:04

To answer that, I need to know: Are you using 16S or 15S LFP? What make and model are your panels? I already know your approximate location and therefore your temperature regime.
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).

paulvk
Groupie
Posts: 157
Joined: Fri, 23 Oct 2015, 23:45
Real Name: Paul
Location: Sydney

Re: PIP-4048MS and PIP-5048MS inverters

Post by paulvk » Thu, 11 Oct 2018, 18:45

I have all my panels as strings of three tested at two's it worked but only with good sun little cloud
went to strings of three my max voltage has been 119v and it works much better with cloud

User avatar
coulomb
Site Admin
Posts: 3415
Joined: Thu, 22 Jan 2009, 20:32
Real Name: Mike Van Emmerik
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by coulomb » Thu, 11 Oct 2018, 21:31

paulvk wrote:
Thu, 11 Oct 2018, 18:45
I have all my panels as strings of three
I assume that means that each of your strings is three panels of 60 cells each?

Usually the panels with output around 250 W have 60 cells. Panels around 200 W and those around 300+ W usually contain 72 cells; the 200 W panels use the smaller 125 mm cells. A few panels have had 54 of the larger sized cells, they seem to be rare now. They were ideal for 3S (strings of three panels in series).

Strings of three panels with 72 cells (either size) are more likely to have cold morning voltages that are too high for the PIP/Axpert Solar Charge Controller.
Learning how to patch and repair PIP-4048 inverter-chargers and Elcon chargers.

6mdx
Groupie
Posts: 32
Joined: Tue, 23 May 2017, 21:17
Real Name: Robert Black
Location: Lismore

Re: PIP-4048MS and PIP-5048MS inverters

Post by 6mdx » Fri, 12 Oct 2018, 04:49

weber wrote:
Thu, 11 Oct 2018, 13:04
To answer that, I need to know: Are you using 16S or 15S LFP? What make and model are your panels? I already know your approximate location and therefore your temperature regime.
Weber, my batteries are 15S.
The panels are REC 250 watt.
I would have to get out of bed to find the model number...... lol

User avatar
weber
Site Admin
Posts: 2492
Joined: Fri, 23 Jan 2009, 17:27
Real Name: Dave Keenan
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by weber » Fri, 12 Oct 2018, 12:23

6mdx wrote:
Fri, 12 Oct 2018, 04:49
weber wrote:
Thu, 11 Oct 2018, 13:04
To answer that, I need to know: Are you using 16S or 15S LFP? What make and model are your panels? I already know your approximate location and therefore your temperature regime.
Weber, my batteries are 15S.
The panels are REC 250 watt.
I would have to get out of bed to find the model number...... lol
3S of these 60 cell panels would certainly stay within the SCC's open circuit voltage spec of 145 V, and would give the best energy yield. 3S will stay under the legal open circuit voltage limit of 120 V if the operating temperature of your panels never goes below 0 °C (dawn in mid-winter). Given that you're using the lower battery voltage afforded by 15S LFP (say 51.8 V absorb, 50.4 V float), energy yield from 2S would probably not be very much less than from 3S. You would lose out on still hot days. It won't achieve max power in absorb if the PV cells go over 54 °C and it wont maintain float at max power if they go over 60 °C.
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).

Revlac
Noobie
Posts: 7
Joined: Sat, 19 Aug 2017, 19:43
Real Name: Aaron
Location: Rosewood

Re: PIP-4048MS and PIP-5048MS inverters

Post by Revlac » Fri, 12 Oct 2018, 18:12

Some time ago We had a 5048Hs inverter and a 4048HS running well on the same 300ah battery bank, the 5048 was running the normal house load and the other would run the water pumps and the air conditioner occasionally.
On a day when the 4048 was sitting completely idle and the other was running the house at about 400watts, one of the inverters failed and took out the other one at the same time, so I can confirm this happens.
They were on completely different circuits apart from the battery, I suspect a transient surge on the DC lines.
And mostly the same parts blown on each inverter.

Battery side Power Mosfet's 8 of them busted
Bus Side components IGBT's 2 of them gone
R54 R57 burnt open
D69 open
Roasted the 200amp fuse.
A few other parts and some zenor diodes on the DC/DC IGBT bus side where also open circuit and not in the checklist on the repair manual.

I have repaired the 4048HS and it has been working hard in the shed ever since and very pleased with it, It was not difficult to repair, just time consuming checking all drive components are in working order before any attempt to power up.
So it was well worth the effort to repair it and learn about its working along the way. :D
Will repair the other one later.
Now have a 5048MS unit ready to go in case something happens to the other unit.

Oh I should mention the only other thing that has caused the inverter to stop was A Taurus Hot Air Gun on the low setting, cant remember the error number, but the inverter only disconnects the output relay and within 10 seconds it reconnects and running again.
The little geny didn't like the hot air gun either.

I think the later model Main boards have a bunch of TVS Diodes (under Main board) on the battery side Mosfets?

Cheers
Aaron

User avatar
coulomb
Site Admin
Posts: 3415
Joined: Thu, 22 Jan 2009, 20:32
Real Name: Mike Van Emmerik
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by coulomb » Fri, 12 Oct 2018, 19:10

Dynamic Load Control

A new patched firmware feature has been added, called Dynamic Load Control. This allows a serial command to force a machine into standby mode. This is similar to turning off the bottom switch. However, the processor keeps running, so another command can be sent to turn it back on, or do anything else. The fans are still running, but the power in standby mode is around 11 W, compared with around 60 W for a machine with a parallel card and operating in paralleled mode. So that's a nice saving.

When machines are paralleled, one or more or all machines can separately be forced into standby mode, or back to normal operation. Of course if all machines are put in standby, the loads will not be powered, but this might be exactly what is needed if your BMS detects a lithium cell going undervoltage.

With suitable monitoring software, this could be used to keep wasted power low when demand is low, yet have the power of two or more machines available when needed. It's kind of cool pressing buttons on a phone and having an inverter go click and change its display :geek:

This feature has been incorporated into patched firmware version 72.20c for PIP-5048 or Axpert 5K-48 (PF1) models with the 64 V option.

The Dynamic Current and Load Control Manual has the details.

This feature will hopefully eventually find its way into a new version of the patched firmware 73.00c, for PF0.8 5 kVA models.
Learning how to patch and repair PIP-4048 inverter-chargers and Elcon chargers.

User avatar
weber
Site Admin
Posts: 2492
Joined: Fri, 23 Jan 2009, 17:27
Real Name: Dave Keenan
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by weber » Sat, 13 Oct 2018, 16:27

@Vissie and @coulomb, your recent posts about Voltronic InfiniSolar Inverters have been moved to the Voltronic InfiniSolar Inverters thread.
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).

djonexx
Noobie
Posts: 3
Joined: Sat, 25 Aug 2018, 13:48
Real Name: Ionut N

Re: LG Chem Resu 10 with PIP-4048MS

Post by djonexx » Sat, 13 Oct 2018, 19:22

So as promised I am back with details on LG Ghem Resu 10 working togheter with the PIP 4048 MS.

First a few notes about the LG Chem RESU 10 - it requires CAN communication with a compatible inverter. Some guys here have reverse engineered the communication protocol and with a few dollars of hardware and many hours of tinkering around I got it working. For the communication module I used an Arduino Nano with a MCP2515 CAN bus module. The data is then stored on the Arduino and read from my Raspberry PI that monitors the inverters. The battery also requires to periodically receive a keep-alive frame on the CAN bus or it will shutdown itself in about 10 minutes.

The parameters I'm using are:

[05] Battery Type: USE
[12] Battery To Utility Voltage: 50 V
[13] Utility To Battery Voltage: 51 V
[26] Bulk Voltage: 57.0 V
[27] Float Voltage: 57.0 V
[29] Cut-off Voltage: 49 V
[32] Bulk Charging Time: 60 minutes

The LG's BMS reports the limits of 57.7 V for the charging voltage, and around 90-99A for the max charging current. For now I'm happy with the slightly lower limit of 57.0 V and that charges the battery to about 95%, and I plan to implement the current limiting with the "Dynamic Current Control" feature just to make sure.

I am also a bit unconfortable about the cutoff voltage so I set the B2U voltage higher. The three inverters eat up about 150 W from the battery even in Utility mode when the charger is set to Solar Only, and that adds up quickly to about 1.8 KWh in 12 hours. So about 20% of the 9.8KWh nominal battery capacity must be reserved for this, or it will trip itself if gets too discharged.

paulvk
Groupie
Posts: 157
Joined: Fri, 23 Oct 2015, 23:45
Real Name: Paul
Location: Sydney

Re: PIP-4048MS and PIP-5048MS inverters

Post by paulvk » Mon, 15 Oct 2018, 07:28

My inverters read the AC voltages 3 volts higher than actual as its all of them (6) has anybody checked to see if they have the same
and can this be changed to be accurate?

User avatar
coulomb
Site Admin
Posts: 3415
Joined: Thu, 22 Jan 2009, 20:32
Real Name: Mike Van Emmerik
Location: Brisbane
Contact:

Re: PIP-4048MS and PIP-5048MS inverters

Post by coulomb » Mon, 15 Oct 2018, 13:04

paulvk wrote:
Mon, 15 Oct 2018, 07:28
My inverters read the AC voltages 3 volts higher ... can this be changed to be accurate?
No, not without hardware modifications. The scale of the currents can be adjusted with undocumented commands, but not the voltages. There are voltage scale factors, but they are never changed.

[ Edit: added "not without hardware modifications". ]
Learning how to patch and repair PIP-4048 inverter-chargers and Elcon chargers.

Post Reply