Search found 6224 matches

by coulomb
Today, 08:15
Forum: Renewable Energy and Storage (Non-EV)
Topic: Axpert VM III Twin 4kW (with 5kW PV support)
Replies: 18
Views: 258

Re: Axpert VM III Twin 4kW (with 5kW PV support)

FiazAhmad645 wrote: Yesterday, 19:00 can you please share Remote Panel firmware version 25.08 here at this platform ...
Sure.
by coulomb
Yesterday, 16:50
Forum: Renewable Energy and Storage (Non-EV)
Topic: Axpert VM III Twin 4kW (with 5kW PV support)
Replies: 18
Views: 258

Re: Axpert VM III Twin 4kW (with 5kW PV support)

farok98 wrote: Yesterday, 16:30 I want to restore firmware to factory version 56.02 Because the twin is still not working even all my attempts, do you have a file?
The closest I know of are:
Version 56.11 for Axpert VM III new twin
Version 56.97 for Axpert VM III new twin (older than the above)
by coulomb
Yesterday, 09:24
Forum: Hyundai and Kia
Topic: 2020 Ioniq 38 range test at 80,000 km
Replies: 12
Views: 576

Re: 2020 Ioniq 38 range test at 80,000 km

FMG keen to run one of those on a minesite. It may not have gone near the coalface, so to speak. My guess it was for a manager to drive to and from the office in Perth. Or maybe an actual driver, some of those operate mining machinery remotely from an office. [ My assumptions were wrong, see next t...
by coulomb
Yesterday, 08:25
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 615
Views: 222764

Re: PIP-5048MK inverter

Can I update the second firmware (MCU) mcu.hex via OTG USB or exclusively via the computer? Only by computer and RS-232 cable. The library code to access the USB port is in the display firmware, and when updating the display firmware, that's not available. I've updated the firmware upload instructi...
by coulomb
Yesterday, 08:22
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048MK inverter
Replies: 615
Views: 222764

Re: PIP-5048MK inverter

HI @coulomb
Can I update the second firmware (MCU) mcu.hex via OTG USB or exclusively via the computer?
by coulomb
Yesterday, 07:45
Forum: Renewable Energy and Storage (Non-EV)
Topic: Axpert VM III Twin 4kW (with 5kW PV support)
Replies: 18
Views: 258

Re: Axpert VM III Twin 4kW (with 5kW PV support)

FiazAhmad645 wrote: Sun, 17 Mar 2024, 12:15 can you provide me with updated version of Remote Panel firmware for Vmiii twin because I am facing some issues in 25.08 as well.
Sorry, I have not found any later 25.xx display firmware as yet.
by coulomb
Sun, 17 Mar 2024, 08:07
Forum: Renewable Energy and Storage (Non-EV)
Topic: Axpert VM III Twin 4kW (with 5kW PV support)
Replies: 18
Views: 258

Re: Axpert VM III Twin 4kW (with 5kW PV support)

farok98 wrote: Sun, 17 Mar 2024, 05:23 Do you have a file of version U2 (25.08)??
It's available here.
by coulomb
Sat, 16 Mar 2024, 21:16
Forum: Renewable Energy and Storage (Non-EV)
Topic: Axpert VM III Twin 4kW (with 5kW PV support)
Replies: 18
Views: 258

Re: Axpert VM III Twin 4kW (with 5kW PV support)

Hi Welcome to the forum. I update firmware to 60.05, factory firmware is 56.02 but twin (battery voltage) doesn't work Why?? I don't know why there is both a 56.xx series and a 60.xx series for these models, except perhaps that the 56.xx range is already badly overcrowded. Are you saying that 60.05...
by coulomb
Mon, 11 Mar 2024, 22:42
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 1538
Views: 330665

Re: PIP inverter repairs and hardware modifications

szaporv wrote: Mon, 11 Mar 2024, 20:16The cies parameter is JT050N065WED 3435 pF, FGH75T65SHDT 3680 pF. I really found it among the recommended replacement transistors.
That sounds fine; the bad part had over 10 000 pF of gate capacitance. My guess is that it will work.
by coulomb
Mon, 11 Mar 2024, 22:38
Forum: Renewable Energy and Storage (Non-EV)
Topic: Control board
Replies: 2
Views: 99

Re: Control board

the 6kva powers up with the 8kva control board but gives me a fan error 01 ... Are you reflashing the firmware on the 8 kVA control board with 6 kVA firmware? It's possible that the 6 and 8 models use different meanings for the various control board pins. And obviously, the 6 kVA hardware could see...
by coulomb
Mon, 11 Mar 2024, 17:13
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-5048GE/GK/MG/MGX/MAX inverters (with unsafe SCC)
Replies: 821
Views: 300457

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

they are not all the same 2: are 550 watt, 2 are 400 watt panels and yes obviously I have connected them in series to achieve higher voltage so my open circuit voltages are 180v. The difference in panel specification may be confusing the simple solar charger algorithm, unless the panels' Imp are fa...
by coulomb
Mon, 11 Mar 2024, 16:58
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 1538
Views: 330665

Re: PIP inverter repairs and hardware modifications

Thanks for your response! Will the fgh75t65shd instead of the jt050n065wed be good, or does something need to be modified in the driver circuit? As long as the gate capacitance isn't too high (there is a post about the limit available from the index), the voltage rating is 650 V or higher, and it's...
by coulomb
Mon, 11 Mar 2024, 07:56
Forum: Renewable Energy and Storage (Non-EV)
Topic: Weird Overnight Battery Discharge Axpert VM II Hybrid
Replies: 62
Views: 981

Re: Weird Overnight Battery Discharge Axpert VM II Hybrid

I looked up the charging curve in the manual and it said that T1(absorb state time)=10 * T0(bulk state time) But what if T0 takes 1 hour, then absorb time would be 10 hrs? That part with the 10x is a copy and paste laziness from a vastly different battery charger! So just ignore that part. These in...
by coulomb
Mon, 11 Mar 2024, 07:49
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP inverter repairs and hardware modifications
Replies: 1538
Views: 330665

Re: PIP inverter repairs and hardware modifications

szaporv wrote: Mon, 11 Mar 2024, 01:19 If possible, is it enough to replace only 4 or all 9 needed?
You always replace top and bottom pairs, hence the 4 when only 3 appear mechanically damaged. As long as the others test OK on the bench (not shorted, free-wheel diode reads around 0.4 V), then it's OK to leave them.
by coulomb
Sun, 10 Mar 2024, 08:33
Forum: Renewable Energy and Storage (Non-EV)
Topic: Weird Overnight Battery Discharge Axpert VM II Hybrid
Replies: 62
Views: 981

Re: Weird Overnight Battery Discharge Axpert VM II Hybrid

I also sometimes saw that the voltage was 28.4V constantly for some time is that absorb state? I guess so. Maybe you have a cell that is collapsed to near zero volts, so with whatever current limit you have set, the voltage can't get past that value. Yet your fully charged voltage seems normal, so ...
by coulomb
Sat, 09 Mar 2024, 17:18
Forum: Charging Infrastructure
Topic: Modifying a 15 amp EVSE
Replies: 13
Views: 211

Re: Modifying a 15 amp EVSE

Thanks Coulomb, I will pull the board out and look again. I am currently trying to figure out how to convert the Positive pulses generated by the pulse generator into pulses centered around zero. But you don't need or want to do that, because you need all the other stuff including the circuit that ...
by coulomb
Sat, 09 Mar 2024, 12:42
Forum: Renewable Energy and Storage (Non-EV)
Topic: Weird Overnight Battery Discharge Axpert VM II Hybrid
Replies: 62
Views: 981

Re: Weird Overnight Battery Discharge Axpert VM II Hybrid

coulomb wrote: Fri, 08 Mar 2024, 08:35 I thought that photo made me look harmless.
But then, reader OffgridQLD decided to post this... :)
by coulomb
Sat, 09 Mar 2024, 12:28
Forum: Charging Infrastructure
Topic: Modifying a 15 amp EVSE
Replies: 13
Views: 211

Re: Modifying a 15 amp EVSE

There seems to be just one large surface mount chip near the Control Pilot area. Perhaps under the board are more components? Even it it's an op-amp chip, or surface mount transistors (nearly everything has been surface mount for the last many decades),it may still be possible to find one track, cu...
by coulomb
Sat, 09 Mar 2024, 11:52
Forum: Renewable Energy and Storage (Non-EV)
Topic: Weird Overnight Battery Discharge Axpert VM II Hybrid
Replies: 62
Views: 981

Re: Weird Overnight Battery Discharge Axpert VM II Hybrid

today in the morning the voltage was 24.3 :?: :| :? In the morning, before charging really gets started, the battery may still be discharging slightly (due to its self consumption). I can't recall if lead acid has a significant hysteresis effect like LFP (Lithium Ferrous Phosphate) does. If so, tha...
by coulomb
Fri, 08 Mar 2024, 16:26
Forum: Charging Infrastructure
Topic: Modifying a 15 amp EVSE
Replies: 13
Views: 211

Re: Modifying a 15 amp EVSE

My idea is to disconnect the control pilot wire in the evse and feed the signal from my square wave generator on that wire instead. A ±12 V (24 V p-p) signal is awkward to generate. Besides that, there are problems, see below. First is what I am considering feasible? Yes, it's doable, but you'll ne...
by coulomb
Fri, 08 Mar 2024, 08:35
Forum: Renewable Energy and Storage (Non-EV)
Topic: Weird Overnight Battery Discharge Axpert VM II Hybrid
Replies: 62
Views: 981

Re: Wierd Overnight Battery Discharge Axpert VM II Hybrid

I was asking about your buymeacoffee profile pic and on the other forums Heh. The Buy Me a Coffee one is real from many years ago. I picked that one because it's slightly comical and at the time I was a little worried that Voltronic might be concerned about my early firmware patching efforts. I tho...
by coulomb
Thu, 07 Mar 2024, 18:52
Forum: Renewable Energy and Storage (Non-EV)
Topic: Weird Overnight Battery Discharge Axpert VM II Hybrid
Replies: 62
Views: 981

Re: Wierd Overnight Battery Discharge Axpert VM II Hybrid

Ah, yes of course; it will have remembered the float stage from last time. The battery has to drop below a certain voltage for it to go back to bulk charging. You should be able to tell from the charge LED. Sigh. I recall now that I was watching for the transition from flashing to solid of the char...
by coulomb
Thu, 07 Mar 2024, 18:40
Forum: Renewable Energy and Storage (Non-EV)
Topic: Weird Overnight Battery Discharge Axpert VM II Hybrid
Replies: 62
Views: 981

Re: Weird Overnight Battery Discharge Axpert VM II Hybrid

I don't know why it stopped near the float voltage. maybe it never got out of the float. Ah, yes of course; it will have remembered the float stage from last time. The battery has to drop below a certain voltage for it to go back to bulk charging. You should be able to tell from the charge LED. can...
by coulomb
Thu, 07 Mar 2024, 18:00
Forum: Renewable Energy and Storage (Non-EV)
Topic: Weird Overnight Battery Discharge Axpert VM II Hybrid
Replies: 62
Views: 981

Re: Wierd Overnight Battery Discharge Axpert VM II Hybrid

But I set utility max current to 10A and the total max charging current to 20 A.. Oh, I misread the settings, sorry. So now the threshold current should be 4 A, so a utility charge at 10 A should be fine. I don't know why it stopped near the float voltage. I said that without damaging the batteries...
by coulomb
Thu, 07 Mar 2024, 07:21
Forum: Renewable Energy and Storage (Non-EV)
Topic: Weird Overnight Battery Discharge Axpert VM II Hybrid
Replies: 62
Views: 981

Re: Wierd Overnight Battery Discharge Axpert VM II Hybrid

I will..but I have seen 29.2volts remaining about for an hour I think on some days Yes, that's expected. On those days, you just didn't get sufficient cloud in the last hour or two to trigger the bug. [ Edit: And on those days, you will have charged your battery closer to full, possibly even comple...