PIP-5048MK inverter

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coulomb
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Re: PIP-5048MK inverter

Post by coulomb »

CocasDaNeve wrote: Fri, 28 Aug 2020, 23:44 Worse than the 2A charging, what annoys me more is that it actually charges at 10A for 2 hours or so, that's just wear on the battery for no reason that I can understand.
Have your tried main firmware version 71.93 with "No AC force charging"?

Edit: I see that user @bloubul7 has found that 71.93 works on a machine that came with 71.50, in this post.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, 2xPIP-4048MS inverters, 16 kWh battery.
1.4 kW solar with 1.2 kW Latronics inverter and FIT.
160 W solar, 2.5 kWh 24 V battery for lights.
Patching PIP-4048/5048 inverter-chargers.
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Re: PIP-5048MK inverter

Post by CocasDaNeve »

coulomb wrote: Sat, 29 Aug 2020, 09:44 Have your tried main firmware version 71.93 with "No AC force charging"?
I just did. Current version:
U1 - 71.93
U2 - 2.49
U3 - 0.21
U4 - 1.10

Apparently everything works. Now I have the PYL option on menu 05 and it communicates with the batteries, after making a cable following the pinout from user Calvin on this thread and setting the DIP switch on the master battery to [1000]:
Image
Tomorrow I'll report back if it didn't charge from the utility during the night.
XtractorFan wrote: Tue, 25 Aug 2020, 15:47 The only way to stop it (haven't tried the 71.93 firmware) is to use a contactor before the PIP and disconnect when you don't want it.
Let's see what it does with version 71.93. I already have a NC contactor to automatically disconnect and reconnect the solar panels for a couple of minutes to reset the SCC when it stops charging like it did with the previous 5048MS.
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Re: PIP-5048MK inverter

Post by CocasDaNeve »

As far as I can tell the firmware does as it states, it didn't charge the battery after switching to the utility. After switching, the battery voltage remained the same until the sun rose.
I think it went into bypass mode instead of double conversion like it did before, however, I am assuming that's the reason why ICC didn't show the utility consumption:
Image

I've switched menu 10 from Auto to Online mode to see what happens.

Edit:
Here is the voltage on the output of the machine, definitely on bypass when switched to utility:
Image
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Re: PIP-5048MK inverter

Post by CocasDaNeve »

Messing around with menus 10 and 23 didn't make any difference, it was stuck on bypass.
Today I've noticed that now it never actually left the grid, even with the batteries above the value on menu 13 for several hours. I shut the utility input down and the output went to 0, it would refuse to enable the inverter, I tried messing around in the menus but nothing worked, it refused to enable the inverter, only the solar charger worked. I proceeded to use the watchpower android app to restore the machine to it's defaults and I got 230V output again, then changed:
- menu 01 from USB to SBU
- menu 05 to PYL
- enabled 06 and 07 auto restarts
- changed 11 to 2A
- changed 12 to 47V
- changed 13 to 50V
- changed 16 from SBL UCB to SBL UDC to disable charging from the utility
- disabled the buzzer

After power cycling it appears to be working as expected, let's see what it does tonight.
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Re: PIP-5048MK inverter

Post by CocasDaNeve »

Today it left the grid as expected when the sun came up, ignore that 8:00 to 8:30 section, had to turn the raspberry pi off.
Image

So I guess if you install this 71.93 firmware you might want to either keep a close watch of the machine or just do a restore to factory defaults and reconfigure as needed.
It still doesn't show the power draw on the utility, but that's probably ICC's fault, and I'm running a very old version, it's probably corrected by now.

EDIT: Almost forgot, yesterday the SCC was doing something weird when the inverter was not under load, kept turning on and off the internal PV relay, I'm pretty certain I've seen a 5048MS doing the same once:
Image
I disconnected the panels and reconnected after a couple of minutes and I think it stopped, but it was late in the day, let's see what it does today.
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Re: PIP-5048MK inverter

Post by coulomb »

Following this post, I've been prompted to check if the QED, QEM, QEY, QET etc commands are present in the later removable display firmwares. These commands query the PV and load energy for the present day, month, year, and grand total. The QEx commands seem to report PV generated energy; the QLx commands seem to report the load (AC-out) energy.

In fact these commands are present now, from removable display version 02.40 (and perhaps earlier, but they are not present in version 02.00).

I have not found documentation for these. The infini protocol document has the QEx commands, but not the QLx commands, and also they QE[x] commands have a nnn field not present in the PIP/Axpert versions. So I'll attempt to document them here.

QEDyyyymmdd: Query PV Energy for the given day. yyyy must be the current year, mm must be the current month, and dd must be no later than the current day. Example: "QED20200929" without the quotes but with the 2 usual CRC characters and a carriage return for the PV energy generated on 2020/Sep/29. Result example "(00000123" for 123 Wh. There are always 8 digits after the '('. The result will also have the usual 2 CRC characters and carriage return and no quotes.
QEMyyyymm: Query PV Energy for the given month. yyyy must be the current year. Same result format as QED.
QEYyyyy: Query PV energy for the given year. There is storage for a few years, possibly restricted to 2017-2026. Result is in watt·hours, but the least significant two digits will always be zero (the firmware stores the energy internally in hundreds of Wh, and multiplies by 100 to display the result in Wh).
QET: Query total PV energy grand total since switch-on.
QLD, QLM, QLY, QLT: same as for the QEx commands, but reports load energy instead of PV energy.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, 2xPIP-4048MS inverters, 16 kWh battery.
1.4 kW solar with 1.2 kW Latronics inverter and FIT.
160 W solar, 2.5 kWh 24 V battery for lights.
Patching PIP-4048/5048 inverter-chargers.
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Re: PIP-5048MK inverter

Post by MJS-1 »

EDIT: Almost forgot, yesterday the SCC was doing something weird when the inverter was not under load, kept turning on and off the internal PV relay, I'm pretty certain I've seen a 5048MS doing the same once
I have this too with 71.93 and 2.49. The SCC relay opens when SOC is 100% and WARNING 69 displayed; no loads present. Then the battery discharges and relay closes. Battery charged again. What a waste! After upgrading I did RESET TO DEFAULTS using watchpower. I did not power cycle what exactly is that?

I was so annoyed by the SCC relay switching that I went back to 02.00 and 71.80. There is still WARNING 69 but SCC relay not switching that often. In this version the battery charge current is throttled and only sometimes SCC relay opens or even done by internal switches (transistors?) The graph shows a small PV loss at 13:11
202009291407.png
202009291407.png (100.05 KiB) Viewed 883 times
Legend
IMG_20200929_142349 small.jpg
IMG_20200929_142349 small.jpg (115.34 KiB) Viewed 883 times
I am thinking of upgrading the display software / main-CPU software gradually to see what happens. May be the old HW does not cope with the latest firmware. I shall post results.
AXPERT KING 5K, U1=71.80, U2=02.00 U3=00.21 U4=01.10
2 x Pylontech US3000, 8 x JA 335W
Solpiplog 2.4.0 on Pi 4, emoncms local
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Re: PIP-5048MK inverter

Post by slickyboy »

Hi,

i got a 5048mk with 4 us2000.
Sometimes i reach peek solar with over 4000 watt and installed another 1800 watt but didnt attach it yet.
So i ordered another mk with 2 parallell kits.

How do i attach the seconds MK to the batteries?
Is it possible to get another batterie connection kit from Pylontech and attach it to the last us2000 in the rack?
I draw this nice detailed picture for better understandig :mrgreen:

Image

Or should i go with both pips to a fuse box and from there with one connection to the batterie?
How much amps can the cable / connection to the batterie take?

Sorry for the bad english. Not a native speaker.

Thx
Marc
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Re: PIP-5048MK inverter

Post by MJS-1 »

Hi Marc,
This is quite a challenge but I am sure there are members in the forum who have similar setups and can help you better than I.

I would connect both MK to DC Fuse/distribution box and only one Pylon cable from there.

Things to keep in mind
4 x US2000 -- 100A charge/discharge
One MK can supply 5000W max -- 100A discharge from batteries. It can charge the batteries with 80A from max 4000W array. For example my nominal 2660W array delivers up to 3000W. In your situation I would distribute your total PV onto the 2 MKs and make sure you are well below the 4000W limit.
Are you using PYL in #05 menu? Will the second MK receive the BMS information?

Cheers
AXPERT KING 5K, U1=71.80, U2=02.00 U3=00.21 U4=01.10
2 x Pylontech US3000, 8 x JA 335W
Solpiplog 2.4.0 on Pi 4, emoncms local
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Re: PIP-5048MK inverter

Post by executivul »

Hi guys,
I have a PIP-5048MK with 4x Pylontech 2.4 kwh batteries and 15x 320w panels (3s4p on S and 3s1p on W, not pushing the inverter at more than the 4kw PV rating).
I'm running the RS485 cable comms but I'm not satisfied by the way things go (53.2V charge voltage, down to 10% discharge, fluctuating charge current due to losing comms, etc), I'm about to deploy a simple Arduino to talk to the batteries and the inverter and control the charge/discharge cycles. Something like ICC but implemented in an Arduino Mega 2560 (4 serial ports) enough Flash and RAM.

Can you please tell me the best way to achieve the "to grid" and "to battery" via console commands?
- Should I use the POP00/POP02?
- Should I edit the "back to grid" voltage via a command? Like: batteries are full, I set the "back to grid" to 46V for eg, after a while when I read the SOC is 20% from the BMS, let's say battery voltage is 48.2V and I order it to go "back to grid" at 50V and I force it to stop discharging the battery this way.
- Any other better way?

@coulomb maybe you can tell me which is the less damaging one for the EEPROM

Thank you all.
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Re: PIP-5048MK inverter

Post by coulomb »

executivul wrote: Mon, 12 Oct 2020, 15:58 I have a PIP-5048MK with 4x Pylontech 2.4 kwh batteries and 15x 320w panels (3s4p on S and 3s1p on W, not pushing the inverter at more than the 4kw PV rating).
320 W panels are about at the threshold where they go from 60-cell to 72-cell. If 72-cell, you will have far less grief if you wire them 2S.
Can you please tell me the best way to achieve the "to grid" and "to battery" via console commands?
- Should I use the POP00/POP02?
That seems the best way to me.
- Should I edit the "back to grid" voltage via a command?
I can't see the point. Yes, you might be able to avoid some total EEPROM writes, but the EEPROM should have a life of about 10⁶ writes, so that should not be a factor.

Plus, it's simpler to just put the values for settings 11 and 12 (back to grid and back to battery) "out of the way" so that they would not normally come into effect. Then you have direct control with POP00 (utility mode) and POP02 (SBU mode, which would be battery mode). Though I don't know how the King's double conversion mode factors into this. You might also have to send POPLG ("setting operation logic") to change between line mode and bypass modes (different on the King, same for most other models).
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, 2xPIP-4048MS inverters, 16 kWh battery.
1.4 kW solar with 1.2 kW Latronics inverter and FIT.
160 W solar, 2.5 kWh 24 V battery for lights.
Patching PIP-4048/5048 inverter-chargers.
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Re: PIP-5048MK inverter

Post by bloubul7 »

executivul wrote: Mon, 12 Oct 2020, 15:58 Hi guys,
I have a PIP-5048MK with 4x Pylontech 2.4 kwh batteries and 15x 320w panels (3s4p on S and 3s1p on W, not pushing the inverter at more than the 4kw PV rating).
I'm running the RS485 cable comms but I'm not satisfied by the way things go (53.2V charge voltage, down to 10% discharge, fluctuating charge current due to losing comms, etc), I'm about to deploy a simple Arduino to talk to the batteries and the inverter and control the charge/discharge cycles. Something like ICC but implemented in an Arduino Mega 2560 (4 serial ports) enough Flash and RAM.

Can you please tell me the best way to achieve the "to grid" and "to battery" via console commands?
- Should I use the POP00/POP02?
- Should I edit the "back to grid" voltage via a command? Like: batteries are full, I set the "back to grid" to 46V for eg, after a while when I read the SOC is 20% from the BMS, let's say battery voltage is 48.2V and I order it to go "back to grid" at 50V and I force it to stop discharging the battery this way.
- Any other better way?

@coulomb maybe you can tell me which is the less damaging one for the EEPROM

Thank you all.
Just a question, have anybody maybe been able to obtain the latest firmware for the Pylontech batteries?

The way I see it is that most of the above problems (with the exception of the comms dropping) are caused by the Pylontech's instructions. The inverter is only carrying out the charging instructions as received from the Pylontech. It might be that the charging voltages have been changed in the latest firmware? Or it might be possible to reverse engineer the Pylontech's firmware to make a Axpert specific firmware version
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Re: PIP-5048MK inverter

Post by executivul »

Pyl firmware is pushing them a bit hard just to fall in spec, just like setting a car's automatic transmission to shift at 4500rpm just to reach the advertised HP every single time.

I don't recommend trying to update latest Pyl firmware, no change regarding voltages, much simpler would be to use the debug console and "edit" the 53.2V value.
I happen to know the commands, but I'm a bit scared to try them on a 1000 USD bomb :lol:

pylon> login debug
pylon_debug> prot pov dis
pylon_debug> config pov 52500
pylon_debug> prot pov en

I used pov but I don't know which config holds the 53.2V value, the help is pretty creepy:

config config [pov/povr/phv/phvr/plv/plvr/puv/puvr/pslp/bov/bovr/bhv/bhvr/blv/blvr/buv/buvr/bslp/bsv/bv
/cot/cotr/cht/chtr/clt/cltr/cut/cutr/dot/dotr/dht/dhtr/dlt/dltr/dut/dutr/coc/coca/cocar
/eot/eotr/eht/ehtr/elt/eltr/eut/eutr/doc/doca/docar/ocd/ocr/sc/scd/scr/clc
/recinv/shuttime/uvtime/save/default][val]
/[sleep/record][on/off/day/week/month][starttime][endtime]
/[hwsleep][<on/off>][sleeptime][wakeuptime]
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Re: PIP-5048MK inverter

Post by coulomb »

executivul wrote: Wed, 14 Oct 2020, 18:31I don't know which config holds the 53.2V value, the help is pretty creepy:
Brilliant! Now we just need to reverse engineer the help string :o

Is there a console command to dump the present values?
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, 2xPIP-4048MS inverters, 16 kWh battery.
1.4 kW solar with 1.2 kW Latronics inverter and FIT.
160 W solar, 2.5 kWh 24 V battery for lights.
Patching PIP-4048/5048 inverter-chargers.
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Re: PIP-5048MK inverter

Post by bloubul7 »

coulomb wrote: Wed, 14 Oct 2020, 19:41
executivul wrote: Wed, 14 Oct 2020, 18:31I don't know which config holds the 53.2V value, the help is pretty creepy:
Brilliant! Now we just need to reverse engineer the help string :o

Is there a console command to dump the present values?
See attached
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PYLON LFP Battery communication protocol - RS232 V2.8 20161216(1).pdf
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Re: PIP-5048MK inverter

Post by executivul »

@coulomb Yes, you can use getpwr, pwrsys, bat and info commands

The battery returns something like this:

Code: Select all

Power System Information
 ---------------------------------
 System is idle
 Total Num                : 8        
 Present Num              : 8        
 Sleep Num                : 0        
 System Volt              : 49381    mV
 System Curr              : -367     mA
 System RC                : 352367   mAH
 System FCC               : 585266   mAH
 System SOC               : 60       %
 System SOH               : 99       %
 Highest voltage          : 3294     mV
 Average voltage          : 3292     mV
 Lowest voltage           : 3290     mV
 Highest temperature      : 23000    mC
 Average temperature      : 21875    mC
 Lowest temperature       : 21000    mC
 Recommend chg voltage    : 53250    mV
 Recommend dsg voltage    : 47000    mV
 Recommend chg current    : 296000   mA
 Recommend dsg current    : -296000  mA

Code: Select all

Protect Attribution
 ---------------------------------
 Item                      Battery       Power   
 Over Voltage            : 3700          54000     mV
 Over VoltageR           : 3600          51000     mV
 High Voltage            : 3650          53900     mV
 High VoltageR           : 3500          52500     mV
 Low Voltage             : 3050          46000     mV
 Low VoltageR            : 3100          47000     mV
 Under Voltage           : 2900          44500     mV
 Under VoltageR          : 3250          49000     mV
 Sleep Voltage           : 2500          38000     mV

 Charging OT             : 61000         61000     mC
 Charging OTR            : 55000         55000     mC
 Charging HT             : 59000         59000     mC
 Charging HTR            : 55000         55000     mC
 Charging LT             : -9000         -9000     mC
 Charging LTR            : -5000         -5000     mC
 Charging UT             : -11000        -11000    mC
 Charging UTR            : -5000         -5000     mC

 Discharging OT          : 61000         61000     mC
 Discharging OTR         : 55000         55000     mC
 Discharging HT          : 59000         59000     mC
 Discharging HTR         : 55000         55000     mC
 Discharging LT          : -9000         -9000     mC
 Discharging LTR         : -5000         -5000     mC
 Discharging UT          : -11000        -11000    mC
 Discharging UTR         : -5000         -5000     mC

 Charging OC             : 102000                  mA
 Charging OC Alarm       : 50000                   mA
 Charging OC AlarmR      : 40000                   mA

 Discharging OC          : -100000                 mA
 Discharging OC Alarm    : -50000                  mA
 Discharging OC AlarmR   : -45000                  mA

 OC Delay                : 15000                   mS
 OC Release              : 60000                   mS
 Charging OC2            : 200000                  mA
 Discharging OC2         : -200000                 mA
 OC2 Delay               : 100                     mS
 OC2 Release             : 60000                   mS
 Discharging SC          : -400000                 mA
 SC Delay                : 0                       mS
 SC Release              : 60000                   mS
 Charging Max Cur        : 10000                   mA
 Balance Start           : 3360                    mV
 Balance Volt            : 30                      mV

 Shut time               : 72.0 H
 BUV/PUV time            : 2400 S
 Sleep ctrl state        : OFF
 Sleep every day
 StartTime               : 20:00
 EndTime                 : 08:00

 HwSleepInfo
 HwSleepStatus           : OFF
 HwSleepTime             : 6 S
 HwWakeupTime            : 60 S

 Data Save every day
 StartTime               : 00:00
 EndTime                 : 23:59
 Save Interval           : 1800
For eg for: Charging OC/Charging OC Alarm/Charging OC AlarmR you have the config coc/coca/cocar.
But can't figure out which is the one for Recommend chg voltage??? RCHV(doesn't exist)? RECINV maybe?

@bloubul7 that protocol is just for querying the battery. For setting things up you must use the human text debug console
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Re: PIP-5048MK inverter

Post by bloubul7 »

Another option might be to intercept the RS485 communication and alter the requested charge voltage before it reaches the inverter.

Although this would require additional effort, it does keep the warranty of the Pylontech intack as the battery software is not modified.
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Re: PIP-5048MK inverter

Post by executivul »

I thought about a "mangling rs485 proxy" but that's an ugly useless hack.
The PIP gets from the BMS only the total charge current: NrOfPylBats x 25A, bulk/float voltages at 53.2V, back to grid 48V, back to batt 51V, batt empty 46V, that's all.
Using the USE settings with these settings accomplishes the same. The PIP is stupid enough that if a large load starts and bat voltage drops under 48V it will switch to utility even though the SOC is high enough.

Having an Arduino read the SOC and using the POP00/POP02 and POPLG for ECO mode is a much better alternative, also I'm connected to grid, but have a 5kW backup genset, so when power goes out I want to bump the MUCHGC to use the max availabe charge current in lowest time possible and then stop the genset, otherwise 2A utility charge is ok to keep batteries afloat while it's dark.
Last edited by executivul on Thu, 15 Oct 2020, 18:34, edited 1 time in total.
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Re: PIP-5048MK inverter

Post by MJS-1 »

executivul wrote: Thu, 15 Oct 2020, 16:57 The PIP gets from the BMS only the total charge current: NrOfPylBats x 25A, bulk/float voltages at 53.2V, back to grid 48V, back to batt 51V, batt empty 46V, that's all.
Isn't BMS reducing the battery charge current when batteries get to 90%? It seems it goes down to 10A/battery and when battery is full to 5A/battery. (Firmware 71.80) BMS also tells MK the battery voltage. Has anybody monitored RS485? So may be there are more commands we just don't know about. I like the idea of an "interpreter box" that sends commands to MK. If we know what we need we could ask Nuno https://www.photovoltaikforum.com/threa ... /?pageNo=1 if he can implement this.
I did installations with US3000 and Goodwe and Victron and it seems those understand the BMS commands much better (Victron decided to replace the 53.2V with 52.5V)
AXPERT KING 5K, U1=71.80, U2=02.00 U3=00.21 U4=01.10
2 x Pylontech US3000, 8 x JA 335W
Solpiplog 2.4.0 on Pi 4, emoncms local
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Re: PIP-5048MK inverter

Post by executivul »

@MJS-1 The LFP batteries get as much current as they need, you only set the MAX current available, as the voltage increases they take less current anyway, if we settle for 52.5, even 52.7 there is no need to lower the current (assuming nobody uses a single US2000 on a 5kW install).

I prefer embedded electronics as they seem much more stable, latest Ubuntu has gone haywire Win style automatic updates/reboots, BerryPIs are unstable in the long term, sdcards die, much too complex for mission critical applications. I wouldn't even trust an ESP to do this, just some good old Atmega 2560 with very simple rules: read all data, publish over mqtt, take a few decisions: battery low=go to bypass/eco, battery charged enough=go to SBU, battery low and grid absent=start genset and increase utility charge amps, grid retuns=lower charge amps.
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Re: PIP-5048MK inverter

Post by NuOG »

executivul wrote: Thu, 15 Oct 2020, 18:46 I prefer embedded electronics as they seem much more stable,
Perhaps you might like to consider using PLCs to do this, and get away from all the "mini puter" pitfalls. Industrial strength, many capabilities etc etc.

I'm not a seller of any brand, just a machine designer/builder/programmer who always looks for the most suitable thing for the job taking into account all factors, but at present I prefer stuff from Unitronics for a host of reasons. Many different capabilities across their models. It might be worthwhile to take a step in a different direction.

In my slowly evolving build, PLC interaction (using their product) has always been part of the plan/process. I admit that due to me knowing PLCs I have shied away from miniputers as I don't know my way around them as much.

cheers, TJ
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Re: PIP-5048MK inverter

Post by justin288 »

Good Day All,
I have 2 5048MK bought from MPPSolar in March 2020 with plan to Parrallel both.
I installed only one then, and kept the other in the store. Last weekend, I installed the 2nd one in parallel with the first.

1. The F09 appeared after Paralleling it with the previously installed 5048MK. The F09 kept reappearing after restarting even in single mode.

2. As advised by MPPsolar Support, I opened and removed the main board of the inverter for visual inspection and found no visible damage.


3. I cleaned the Main Board soldering with a tootbrush (copied from one SA forum) and reinstalled the main board and used the battery to turn on, no error codes. Currently it is powered with battery and AC Grid in single mode, no error code. I will connect solar panels in the morning to see the outcome.

4. Do you have any idea what will cause the error code?

4. I see members here used to parallel operations, Kindly give detailed steps to parallel both inverters. The Manual is not clear.

Is the paralleling process done with Battery, AC Grid or PV?
More so, after paralleling, where is the setting for charging voltage and current done (Master, Slave or both inverters)?

6. The Serial Port on both inverters for connection to watchpower (laptop) are not working. I used an rs232 to usb adapter that works for the old 24v Mpp solar inverter.
The Firmware on both 5048Mk inverters are:
U1 71.90
U2 02.40
U3 00.24
U4 00.00
Thanks in Advance.
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coulomb
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Re: PIP-5048MK inverter

Post by coulomb »

justin288 wrote: Tue, 20 Oct 2020, 07:52 Last weekend, I installed the 2nd one in parallel with the first.
I assume you followed the manual (either the inverter manual, if it has a paralleling section), or the parallel guide. Though I don't see separate isolating breakers for each inverter's output (maybe they're just not in the photo, or I missed them). So you would have set each inverter to PAL mode (setting 28), before paralleling the outputs.
1. The F09 appeared after Paralleling it with the previously installed 5048MK. The F09 kept reappearing after restarting even in single mode.
Yikes. That sounds like the inverter proper became damaged by paralleling two inverters when they aren't synchronised (either by having their output modes set to PAL or by having AC-in connected to both).
3. I cleaned the Main Board soldering with a tootbrush (copied from one SA forum) and reinstalled the main board and used the battery to turn on, no error codes.
I think either you dodged a bullet there, or the other inverter suffered the damage, and the fault transferred to all of them. I'm not clear on which inverter(s) showed the fault code.
4. Do you have any idea what will cause the error code?
Fault code 09 is caused by a failure to pre-charge the bus capacitors at start-up. In other words, a small power supply was turned on to charge up the capacitors, and they did not reach a certain voltage within a certain time. Often, this means that there is a short across the bus, usually due to a pair of IGBTs failing short circuit.
4. I see members here used to parallel operations, Kindly give detailed steps to parallel both inverters. The Manual is not clear.
First, wire the inverters such that they both have their own isolating breakers. Start by isolating (disconnecting) both outputs. Ensure that AC-in is present. Turn off an inverter, change setting 28 to PAL, then turn it on. Do the same to the other inverter. At this point, I always get a multimeter and measure the difference between outputs (one multimeter probe to each active output), and make sure that there is less than about 20 VAC. Now repeat with AC-in disconnected. If they stay synchronised (the voltage between them stays low), then this must be happening via the CAN bus (the grey "paralleling' cables). Now you can un-isolate the first inverter, noting the load. Finally, unisolate the second inverter, and check that the load is roughly divided between the two inverters. The loads should differ by no more than about 20 W.
More so, after paralleling, where is the setting for charging voltage and current done (Master, Slave or both inverters)?
Most settings, including the charging voltages, are set on either/both (changing one should change the setting in the other automatically). However, charging current settings are individual to each inverter (you might have more or better PV connected to one, for example). So set these up individually. Note that the maximum total charging current for the battery will be the sum of the maximum total charge current settings in the paralleled inverters. So for example you might have 30 A on one and 40 A on the other, resulting in a maximum total charge current of 70 A (good for two US3000s, for example, which can take 37 A each, so 80 A is too high and 60 A is needlessly low).
6. The Serial Port on both inverters for connection to watchpower (laptop) are not working. I used an rs232 to usb adapter that works for the old 24v Mpp solar inverter.
The Firmware on both 5048Mk inverters are:
U1 71.90
I can't recall if 71.90 handles paralleled MKs or not; I think it does. There was a problem with earlier MK firmwares, probably about 71.80 or even 71.86. But that should be fixed now. 71.93 and 71.94 are available, but they don't contain each other's fixes, so there doesn't seem to be a good update to 71.90 at present. I don't use Watchpower myself, so I can't think of anything to suggest.
U4 00.00
This probably reported as zero because it was night time. During the day, PV powers the solar charge controller, and it should report its version.
The format is [img]url_of_image[/img], and you have to fish out the image URL from the surrounding page. Or you can drag a file name from a file explorer into the editor window. They will then look like this:

Image

Edit: BTW, is 181V real? I assume your mains is nominally 220 V, but that's still 18% low.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, 2xPIP-4048MS inverters, 16 kWh battery.
1.4 kW solar with 1.2 kW Latronics inverter and FIT.
160 W solar, 2.5 kWh 24 V battery for lights.
Patching PIP-4048/5048 inverter-chargers.
justin288
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Re: PIP-5048MK inverter

Post by justin288 »

coulomb wrote: Tue, 20 Oct 2020, 09:16 I assume you followed the manual (either the inverter manual, if it has a paralleling section), or the parallel guide. Though I don't see separate isolating breakers for each inverter's output (maybe they're just not in the photo, or I missed them). So you would have set each inverter to PAL mode (setting 28), before paralleling the outputs.
Yes i followed the steps in the manual. On the lower right of the image there are four 32A circuit breakers (two for each input and two for each output of the inverters) and connected to a common terminal block.
coulomb wrote: Tue, 20 Oct 2020, 09:16 Yikes. That sounds like the inverter proper became damaged by paralleling two inverters when they aren't synchronised (either by having their output modes set to PAL or by having AC-in connected to both).
I did the setting 28 on both, but AC Grid was not available. Although the manual mention Ac input later in step 4.
coulomb wrote: Tue, 20 Oct 2020, 09:16 I think either you dodged a bullet there, or the other inverter suffered the damage, and the fault transferred to all of them. I'm not clear on which inverter(s) showed the fault code.
The 2nd Inverter which became the Slave showed the F09 Fault.
Currently it works in single mode, i will Parallel again and see if the fault will return.

[ Edit Coulomb: fixed quoting. ]
15S 120P 12KW 18650 Li ion Batteries with Batrium BMS
2 x PIP 5048MK Inverters.
1920W Solar on East
1920W Solar on West
justin288
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Re: PIP-5048MK inverter

Post by justin288 »

coulomb wrote: Tue, 20 Oct 2020, 09:16 First, wire the inverters such that they both have their own isolating breakers. Start by isolating (disconnecting) both outputs. Ensure that AC-in is present. Turn off an inverter, change setting 28 to PAL, then turn it on. Do the same to the other inverter. At this point, I always get a multimeter and measure the difference between outputs (one multimeter probe to each active output), and make sure that there is less than about 20 VAC. Now repeat with AC-in disconnected. If they stay synchronised (the voltage between them stays low), then this must be happening via the CAN bus (the grey "paralleling' cables). Now you can un-isolate the first inverter, noting the load. Finally, unisolate the second inverter, and check that the load is roughly divided between the two inverters. The loads should differ by no more than about 20 W.
Thanks, very clear now.
coulomb wrote: Tue, 20 Oct 2020, 09:16 This probably reported as zero because it was night time. During the day, PV powers the solar charge controller, and it should report its version.
Yes, it is U4 01.10
coulomb wrote: Tue, 20 Oct 2020, 09:16 BTW, is 181V real? I assume your mains is nominally 220 V, but that's still 18% low.

Our Grid supply in Nigeria is not always 220v and not available always.
After Paralleling with AC Grid Input, when the AC Grid Supply goes out, will it affect the Inverters when it the AC Grid Supply restored? Will the inverters remain in Parallel state?
15S 120P 12KW 18650 Li ion Batteries with Batrium BMS
2 x PIP 5048MK Inverters.
1920W Solar on East
1920W Solar on West
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