Search found 61 matches

by Roman khan
Sat, 20 Nov 2021, 21:19
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

I resolve the problem by replacing the 8 pin smd ic TL072 in MPPT section of Main PCB board.located on back side of PCB near the solar input. there is no indication of components numbering in my pcb. See in attachment.
by Roman khan
Sat, 20 Nov 2021, 21:12
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

I have an Axpert VMIII 5.2kw inverter,whenever i connect load to its out put ,it is shifted to backup mode and indicate the solar sign stand alone with no charging arrow and no bypass arrow to load.whenever I turn off the load breaker it comes to normal and solar shows arrow indication to charging t...
by Roman khan
Fri, 19 Nov 2021, 21:15
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

Hello to all, i have a comm board that seems to have an defective transistor but i can't see the values from him. Anyone that can help me with the value? The communication board have the serial 31-550297-02G-2038. https://imgur.com/a/dxKfLn7 (three images) https://i.imgur.com/jxB34eD_d.webp?maxwidt...
by Roman khan
Sat, 06 Nov 2021, 18:37
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

7912 is for - 12V, I would suspect the +12V regulator, or the main power supply. Problem resolved Actually the problem was not in supply section.this inverter was tried to repair by a local technician before I received.the problem was R238 a color code resistor in Bus soft start circuit located in ...
by Roman khan
Wed, 03 Nov 2021, 21:50
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

I receive an inverter Axpert VMIII 3.2kw.whenever i connect both fan and LCD screen it shutdowns.when i remove one of them then it run ok ,i checked the voltages on 7805 voltage regulator and 7912 voltage regulator their output is 4.9v and 12v simultaneously.i check the fan driver it was ok and repl...
by Roman khan
Tue, 02 Nov 2021, 19:58
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2953
Views: 800350

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

QPIWS result: 01100000000000000000000000000000 That says that the inverter is in fault mode (second digit == 1), and there is a bus-overvoltage fault (third digit == 1). All other digits are zero, so no other faults. Hi Coulomb how you get this QPIWS code from inverter ?what type of communication p...
by Roman khan
Thu, 28 Oct 2021, 01:56
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

Hello, Mr. coulomb, I have little experience, because this type of inverter is new to the local market in Yemen. The HSQ17 has been installed and the inverter has no errors, only the 0V outpot. It has the hottest HSQ17 Hi This is the PCB of an axpert vmiii model and this is the bus soft start circu...
by Roman khan
Sun, 24 Oct 2021, 20:16
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

I could not find it on my ancient 2013 main board either. [ Edit: There seems to have been a major renumbering of parts designators (e.g. R287) in some later models. ] Hi coulomb i have two PCBs of mks 5kw.old PCB has a relay type component and new pcb has OP07 ,8 pin ic as you can see in pictures....
by Roman khan
Fri, 22 Oct 2021, 05:11
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

Vissie wrote: Fri, 22 Oct 2021, 02:38 72 fault
Hi all. I have a 72 fault and its not the control card
Where and how do they do current sensing?
Any ideas where to look
The board had some water damage
Regards
Vissie
Op07 ,8 pin ic
by Roman khan
Sat, 02 Oct 2021, 22:02
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

osama wrote: Sat, 02 Oct 2021, 05:07 Peace be upon you. I have this inverter. I repaired it during the test. The solar energy indicated that it is not connected
It appears when mppt is not connected.
by Roman khan
Sun, 26 Sep 2021, 04:20
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 227
Views: 22935

Re: jonescg's home battery storage system

jonescg wrote: Sat, 25 Sep 2021, 09:59 Depends if you need the BMS to also report State of Charge to the inverter or not. If you want to keep it simple, an aftermarket BMS is fine.
What do you mean by simple?
Does the separate BMS reports the state of charge to the inverter?
by Roman khan
Sat, 25 Sep 2021, 03:39
Forum: Renewable Energy and Storage (Non-EV)
Topic: jonescg's home battery storage system
Replies: 227
Views: 22935

Re: jonescg's home battery storage system

What would be the better option,to buy a 200ah lipo4 battery with Built-in BMS or import 3.2v 200ah lipo4 cells to make a 48v battery bank with BMS? Please someone guide me in berief.
by Roman khan
Sun, 12 Sep 2021, 04:02
Forum: Renewable Energy and Storage (Non-EV)
Topic: Inverter Remote Screen with a Nextion
Replies: 11
Views: 1727

Re: Inverter Remote Screen with a Nextion

If you install the Nextion editor https://nextion.tech/nextion-editor/#_section1 Then download the Invert_Direct_25_5_21.zip file above you can run it in debug mode in the editor and see how it works you can also make changes to the display. You can order a 7 inch Nextion display with a case. Thank...
by Roman khan
Mon, 06 Sep 2021, 03:04
Forum: Renewable Energy and Storage (Non-EV)
Topic: Inverter Remote Screen with a Nextion
Replies: 11
Views: 1727

Re: Inverter Remote Screen with a Nextion

Hi paulvk Thank you so much i am interested to make a customized display screen to monitor my axpert inverter performance,mounted inside steel box.i have very low knowledge of Electrical communication.i have some questions can we connect HMI directly with axpert inverter through HMI cable?can we mak...
by Roman khan
Sun, 08 Aug 2021, 02:37
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

Hi coulomb
Thank you for your help on this forum.Please explain the working principle of this circuit.what is the function of U19 ,Q60,Q61,BAT 54S ,and 18v zener diodes in brief.
Thank you
by Roman khan
Fri, 06 Aug 2021, 23:10
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

For fault 03 check the four transistors 1020 and 2655 on dc to dc side and bus side igbt drive i have marked in picture. Those don't seem to me to have anything to do with the battery voltage measurement. Any idea why replacing these may be effective? Edit: I'm not questioning your helpful suggesti...
by Roman khan
Fri, 06 Aug 2021, 21:17
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

I am getting Error 3 - high battery voltage. Ready 96+ volts.
For fault 03 check the four transistors 1020 and 2655 on dc to dc side and bus side igbt drive i have marked in picture.
by Roman khan
Wed, 07 Jul 2021, 02:28
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

the dc to dc side MOSFETs get heat up in even no load and it takes up to 4 ampere dc from battery. That sounds like the gates are floating, or at least not turning off properly. Did you check the pull-down (as well as the series) gate resistors? Are there any other components in the gate drive circ...
by Roman khan
Fri, 02 Jul 2021, 22:19
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

I tried to repair axpert vp 1kw inverter,its dc to dc converter side MOSFET were blown out. Now i replace the mosfet with CSD19505,mosfet driver resistors and SG3525 .the dc to dc side MOSFETs get heat up in even no load and it takes up to 4 ampere dc from battery.
by Roman khan
Mon, 21 Jun 2021, 22:43
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

The 09 fault has resolved but after running 5 minutes it shows fault 02, over temperature,also both fan rotates very fast. It would be good to see a Q1 command response. Unfortunately the format of the response seems to have changed, but if there are still temperature measurements in there, it migh...
by Roman khan
Mon, 21 Jun 2021, 03:42
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

I have repaired an axpert vmiii 3.2kw inverter ,was in fault 09,bus soft start failed.I repaired the bus soft start circuit The 09 fault has resolved but after running 5 minutes it shows fault 02, over temperature,also both fan rotates very fast. I replace the controller card but could not succeed. ...
by Roman khan
Wed, 17 Mar 2021, 03:48
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE/GK/MG/MGX inverters (with unsafe SCC)
Replies: 515
Views: 74687

Re: PIP-5048GE/GK/MG/MGX inverters (with unsafe SCC)

Hi coulomb Why we need a bus soft start circuit in inverter?In vmiii and vmii inverters there is a bus soft start circuit in mppt. Consist of The D82 are (RHRP8120 8A 1200V UFST) The R238 are (RES 0.62 J) The MOSFET Q17 are (IRFBG30 3.1A 1000V TO-220) The D67 and D73 are (MUR4100ERLG 4A 1000V UFST) ...
by Roman khan
Fri, 12 Mar 2021, 03:40
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE/GK/MG/MGX inverters (with unsafe SCC)
Replies: 515
Views: 74687

Re: PIP-5048GE/GK/MG/MGX inverters (with unsafe SCC)

Good day
Can someone explain what is the difference between UC3525/SG3525/and KA3525 IC? Can we use them as replace of each other?
by Roman khan
Fri, 12 Mar 2021, 00:20
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 760
Views: 122680

Re: PIP inverter repairs and hardware modifications

Vissie wrote: Tue, 09 Mar 2021, 18:49 This one charger fine from its solar side but will not charge from ac
Replace the charging relay or check the coil driver circuit.i have resolved this problem by replacing the third relay.you can see in picture.
by Roman khan
Thu, 04 Feb 2021, 03:11
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE/GK/MG/MGX inverters (with unsafe SCC)
Replies: 515
Views: 74687

Re: PIP-5048GE, PIP-5048GK and PIP-5048MG inverters (with unsafe SCC)

OK, not wanting to interrupt, just had a message from Eric at mppSolar, his reply in red: I have a query about the maximum solar current on the input side. The manual gives 5000w as maximum power and you give the mppt range of 120v to 450v, but the manual doesn't give a maximum current. Ampere rati...