PIP-4048MS and PIP-5048MS inverters

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

Post by suorama » Wed, 13 Mar 2019, 17:46

coulomb wrote:
Wed, 13 Mar 2019, 15:58
Welcome to the forum.
Thank you!
Paralleling old and new machines is quite tricky. The only success that I know of is 72.70 on the old, and 74.10 (or later) on the new. That means you can't run patched firmware, and you can't have the 64 V option.
That is understood.

That seems a bit drastic. But if you do, I'd suggest getting 64 V models, if you want the option of running patched firmware.
Yes, those MK 48V versions can do that 64V, but firmware... not yet, I guess?
I'm sure that there are plenty of 5048 models out there. Perhaps search for the Axpert MKS 5K-48 (not the MKS II), which is a more common name for the same thing.
What I think which is similar is http://voltronicpower.com/en-US/Product ... -3KVA-5KVA. At least it looks like same and specs are same.

But I understand you mean, if I still look those older ones. Well, I got those MPP Solar PIP-5048MK marked about the same price than MS version. There was only 17,65€ diffrence (by three).
I can sell my 4048MS units to forward, I have buyers already, but I can also use these units to charge my Leaf ;). Of course that 22A per phase also is enough because I have Accelev and it can combine two phase to one 250Vac. By now my utility feeds a 3 x 25A, so difference is not that much.

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

Post by coulomb » Wed, 13 Mar 2019, 21:41

suorama wrote:
Wed, 13 Mar 2019, 17:46
What I think which is similar is http://voltronicpower.com/en-US/Product ... -3KVA-5KVA. At least it looks like same and specs are same.
Arrgh, by bad. MK, or Axpert King, it didn't click with me.

We have no firmware for the MK / King model, so no patched firmware is available for them as yet. So you've bought three of those now?
I have Accelev
Interesting product. I don't know if you can set up two PIPs to feed two phases to your Accelev; I suppose it might work, but I have a suspicion it will throw an error if it can't see three machines.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, PIP-4048MS inverter, 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-4048MS and PIP-5048MS inverters

Post by suorama » Fri, 15 Mar 2019, 19:50

coulomb wrote:
Wed, 13 Mar 2019, 21:41
Arrgh, by bad. MK, or Axpert King, it didn't click with me.

We have no firmware for the MK / King model, so no patched firmware is available for them as yet. So you've bought three of those now?
Yes I did, but maybe I can handle that without patch at first =)
Interesting product. I don't know if you can set up two PIPs to feed two phases to your Accelev; I suppose it might work, but I have a suspicion it will throw an error if it can't see three machines.
Accelev uses only two phases. So it take that 400V in to the transformer to out 250V from sec. So with 2 x 16A you can use 1 x ~32A current and 6,6kW charger. My use only ~14A from that 250V, because my Leaf have 3,6kW charger. But that 250V helps a bit. My car fill littlebit faster than 3,3kW. Maybe not 250V X 16A = 4kW but appr. that promised ~3,6kW power. When Battery is quite low (like only 0,5kWh remain), then first few kilowatthours go with 4,4kW power.
So, when I got that 3-phase system to work, it must work like now. It stress two pips but smaller current than if I got all from one. Maybe there is too much losses. But now it is easier to follow, I guess. (I have also that one phase 16A charge control box too to compare.)

edit:
What I mean with that if I save my 4048MS units, I can use one or two (parallel) to my charge. Of course PIP's give error code if there is not that third machine.
But I can still use that Accelev with new configuration. And if it behave nicely, it will help that 3,3A less current (~760W) what I got when use new ones.
As I say, our feed is now 3 x 25A, that means 17,25kW, after PIP-5048MK x 3 I got 15kW max power. So that is 2,25kW less (750W / phase).
So if I take 3600W from one phase, I must look better than before what I use at same time. But If I can divide that to two phase, then there is more room to use another things like before =).
Ok, maybe there is too much losses, so I just need to look what happens...

edit2:
I measure first time that Accelev better...
Just now we have 395,2Vac between phases and Accelev take 9,4A, so power is 3715W. Accelev feeds to car 247Vac and 14,6A. That takes 3606W. So 109W goes to transform. That is about 97% eff. Not bad I think.
So, that 3715W means about 16,15A if there is 230V phase, so that Accelev stress two 230V phases about 8,08A.

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

Post by suorama » Wed, 20 Mar 2019, 02:10

Today I got my trio. I will take pic when those is installed. Or do you want something more? ;)
All my PIP-5048MK units is marked to made 11 2018. So, are those pretty first product ones?
I opened those today only to add parallel cards, but what I notice there is ferrite ring with that RJ45 cable to display unit. I think I do not see that when I found pics of these units with removable display. Maybe not markable thing but now it noticed =).

That is one of my units type shield. (So, at least one picture =D )
Image
That 22A should mean 21,74A? 5000W / 230V. What if I set 240V? Can I then get 5280W or if I set 220V could I get then 23A?
What I mean, what is "the main parameter". It is power? If it is, then 220V gives me more amperage (or 240 stress less wires with lower amperage). If it's amperes, then higher voltage gives me more power. 230V and 22A makes 5060W. Maybe I test all of these in future =).

If there is 64V possibilities. Do that mean, I can use 54V battery (27 x 2V = 54V or 27 x 2,37V = 63,99V)?
So If I bought 24 x 2V@1000Ah battery I got 48kWh energy store.
Instead of that I can buy 27 x 2V@1000Ah battery and got 54kWh?

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

Post by coulomb » Wed, 20 Mar 2019, 09:24

suorama wrote:
Wed, 20 Mar 2019, 02:10
All my PIP-5048MK units is marked to made 11 2018. So, are those pretty first product ones?
No, I think they've been around for well over a year. Also, yours is PF1 (5 kW), the first ones were PF0.8 (4 kW).

Also, you seem to have PWM models (MK versus MS). Is that what you intended? [ Edit: Ugh! Brain spasm! I'm confusing model letters. Sigh. ]
That 22A should mean 21,74A? 5000W / 230V.
Yes, rounded to the nearest ampere.
What if I set 240V? Can I then get 5280W or if I set 220V could I get then 23A?
The limits all seem to relate to power. I believe you will get almost 23 A at 220 V.
If there is 64V possibilities.
Yes, by using a higher voltage battery, you are able to store more energy than a lower voltage battery of the same Ah rating. [ Edit: but generally MPP Solar use only 64 V models when both are available from the manufacturer. So that suggests that there aren't any 64 V models to be had. ]

But then you are closer to the maximum voltage that the battery-side MOSFETs can handle. Remember that a major failure mode with these inverters is the capacitors ageing and the battery-side MOSFETs blowing up due to over-voltage spikes.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, PIP-4048MS inverter, 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-4048MS and PIP-5048MS inverters

Post by suorama » Wed, 20 Mar 2019, 13:42

coulomb wrote:
Wed, 20 Mar 2019, 09:24
No, I think they've been around for well over a year. Also, yours is PF1 (5 kW), the first ones were PF0.8 (4 kW).

Also, you seem to have PWM models (MK versus MS). Is that what you intended?
That MK serie is new one if we speak MPP Solar PIP series. There is not PF0.8 MK machines at all. MPP Solar says that MK is this year new product (and that why I think if those is maybe ones of the first units =) ). But of course if these is selled over the year already, I got wrong information from MPP Solar.

If I remember right, example HS is PWM model and MS is MPPT model. That M marks MPPT and S maybe Serie (or not). K means instant switching between sources.
So, that MK mean Zero transfer time 5000w Solar inverter 230vac 48vdc + 80A MPPT solar charger + battery charger 60A with bluetooth feature.
Yes, by using a higher voltage battery, you are able to store more energy than a lower voltage battery of the same Ah rating. [ Edit: but generally MPPSolar use only 64 V models when both are available from the manufacturer. So that suggests that there aren't any 64 V models to be had. ]

But then you are closer to the maximum voltage that the battery-side MOSFETs can handle. Remember that a major failure mode with these inverters is the capacitors ageing and the battery-side MOSFETs blowing up due to over-voltage spikes.
Ok.
MPP Solar says that equalization charge is 64V and max. DC voltage is 66V. Quite little marginal indeed. So, it would be better to use normal 48V nominal voltage system to save units. That 2.667V per cell is pretty much the max. what can use (16V @ 12V) to equalization.

Here is the link to aliexpress where I bought mine. PIP-5048MK
If someone is interested of features.

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

Post by Hennie » Thu, 21 Mar 2019, 16:56

Hi
I am new with forums, etc.
I need some help regarding firmware for 5kva Axpert in parallel.

Please guide me where to go for help.

Hennie

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

Post by Hennie » Thu, 21 Mar 2019, 19:26

If possible could you give me some advice what firmware to use.

First Just a explanation of my setup.
I have
2 x 5kwa mecer inverters in parallel
24 x 250W solar panels (12 on each inverter.)
12 x 220Ah Silver Calcium batteries
The parallel system is working but when I connect the generator the firmware seems to me do not understand whats going on.
I upgrade yesterday the firmware U1 to 72.70b and U2 to 4.10 on both inverters.
Today it seems the fans running a bit high.
I did not test the generator today.
Do I use the correct firmware update?

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

Post by coulomb » Fri, 22 Mar 2019, 07:46

Welcome to the forum, Hennie!
Hennie wrote:
Thu, 21 Mar 2019, 19:26
firmware for 5kva Axpert
There are at least three models that fit this description: the PF0.8 (which I assume you have), the PF1.0, and the Axpert II 5kVA with 450 V MPPT. There will soon if not already be Kings, at least 2 Value Line models, and no doubt more. So please be more specific than "5 kVA Axpert".
The parallel system is working but when I connect the generator the firmware seems to me do not understand whats going on.
Axpert / PIPs are very fussy about generator frequency, voltage, and probably wave quality. You may have to use the APL instead of UPS voltage range (setting 03). Also, if the generator is your only source of AC input, you'll want to be using Uti output source priority (Setting 01), so that the generator is used as soon as it is detected. Check for the little "tennis ball" (sine wave in a circle) icon near the middle left of the LC screen. If that icon doesn't appear within a second of the generator starting, or it flashes, then it doesn't like the generator and won't use it.

LCD AC in.png
LCD AC in.png (613.25 KiB) Viewed 1669 times
I upgrade yesterday the firmware U1 to 72.70b and U2 to 4.10 on both inverters.
Today it seems the fans running a bit high.
If you started with older firmware, then the fan behaviour could well have changed. If you update to 73.00e, you will observe even more fan activity.
Do I use the correct firmware update?
If it's working at all, then you likely have used the correct series of updates (the 72.XX with XX ≥ 40 or 73.00). But there is no need to stop at 72.00b; it is obsoleted by 72.70c. There is also no reason not to progress to 73.00e.

Did you not find the post Can I update my firmware, and if so, to what?

If you did, please tell me how I can improve the instructions so that you would be lead to the most recent version in that series, which is 73.00e. 72.70b is over 2 years old.

[ Edit: forgot to add a welcome at the top. Sigh. ]
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, PIP-4048MS inverter, 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-4048MS and PIP-5048MS inverters

Post by coulomb » Fri, 22 Mar 2019, 14:44

suorama wrote:
Wed, 20 Mar 2019, 13:42
That MK series is new one if we speak MPP Solar PIP series.
Yes, sorry, when you said "trio" I short circuited to the triple-MPPT models. Sigh.
MPP Solar says that MK is this year new product (and that why I think if those is maybe ones of the first units =) ).
It seems to have taken a few months for MPP Solar to decide to carry the Axpert King (as a PIP-5048MK). So while yours may well be one of the first labelled as PIP-5048MK, I believe that the Axpert Kings have been available (under other labels) for perhaps six months.
what can use (16V @ 12V) to equalization.
The most common battery that needs this really high equalisation voltage seems to be the Trojan (flooded lead acid). These are well respected batteries, if you want lead acid and don't mind the maintenance, so it's good that they are finally supported.

[ Edit: PIP-5048MS -> PIP-5048MK. ]
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, PIP-4048MS inverter, 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-4048MS and PIP-5048MS inverters

Post by andys » Mon, 25 Mar 2019, 06:07

Went to use my classic PIP-4048MS yesterday and the AC output was no longer working. It is still charging fine off solar.

The on/off switch on the bottom makes it power up and I can hear the odd relay click, but there's no AC output and it turns off again after a minute.

There's no error displayed, no fault LED, it simply fails to turn on the AC output and fails to indicate output is turned on - shows 0V 0Hz output on the display.

:?

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

Post by coulomb » Mon, 25 Mar 2019, 08:54

andys wrote:
Mon, 25 Mar 2019, 06:07
The on/off switch on the bottom makes it power up and I can hear the odd relay click, but there's no AC output and it turns off again after a minute.
The on/off switch has two electrical functions. One is to turn on the power supply via a capacitor; that part seems to be working. The other part is to provide a digital signal to the Digital Signals Processor (DSP) via opto-coupler U8 on the main board. It's acting as if this part isn't working, so it appears to the DSP that the switch is off all the time. If there is no source of charge power (AC-in or PV), the with the switch appearing to be off, the DSP will send a signal to the power supply to turn itself off after some 20 seconds.

The on/off signal gets to the DSP on the control (daughter) board via a 48-pin connector. Perhaps remove the control board (there are two screws holding it in place), perhaps spray with a non-residue cleaner like CRC or swab with methylated spirits and replace the control board. It looks like the on/off switch signal is near the pin 16 end. That may overcome some oxidation of the pin or socket involved.

[ Edit: added link to post with partial schematic trace of the main power supply. ]
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, PIP-4048MS inverter, 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-4048MS and PIP-5048MS inverters

Post by andys » Mon, 25 Mar 2019, 15:06

coulomb wrote:
Mon, 25 Mar 2019, 08:54
The on/off switch has two electrical functions. One is to turn on the power supply via a capacitor; that part seems to be working. The other part is to provide a digital signal to the Digital Signals Processor (DSP) via opto-coupler U8 on the main board. It's acting as if this part isn't working, so it appears to the DSP that the switch is off all the time. If there is no source of charge power (AC-in or PV), the with the switch appearing to be off, the DSP will send a signal to the power supply to turn itself off after some 20 seconds.
Thanks very much, that is super helpful!

Before opening it up, I decided to try AC input with the generator, and this somehow "woke" it up, after disconnecting the generator, suddenly the inverter was working again. Turned it off and on several times and it stayed working. This is starting to suggest a stuck relay or, like you said, something getting a bit rusty inside, I will definitely open it up if it happens again.

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

Post by Honu » Mon, 25 Mar 2019, 21:38

Hi guys,
I've read most of this thread, it's very informative. My new house is about to be build, i'm living in Europe (France) and i'm going Off Grid, and the PIP 5048 seems to be a nice solution for me.
I'm planning on heating my water for showers but also to heat my house with PV. I've discussed a lot with electrodacus but his DMPPT is not for me.. too many drawback.

Plan is :
- 7kW of PVs
- One PIP 5048
- One PCM60X
- 5kWh of LiFePo4 (then 10kWh if needed)
- A system to heat my water

The question is more about the water heating done with a PIP 5048, the way i imagine it is to "dump" (do not know if it's the proper word) the excess energy to the heater. For that i imagined a priority list :
1 - DC Loads : < 200W (a dedicated 48V DC circuit in house, phone charger, water pumps for aquariums, lights, Arduino ?, Various Electronics)
2 - Inverter 220V Loads : < 5kW (appliances, tools.. )
3 - Battery Charging : 0.25C : 1500W
4 - Heating Water : all remaining power (One tank for shower and one to heat the house)

Did someone build this kind of thing and how did you connect the resistive element of the heater ...on the charger side (DC) or on the inverter side (AC) and how do you control the amount of power to use 100% available PV power without takin too much ... clamps on pv electric lines ? A dedicated pv to sense the irradiation and deduce the available power ?

Thanks .. ;D

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

Post by coulomb » Tue, 26 Mar 2019, 08:52

Honu wrote:
Mon, 25 Mar 2019, 21:38
Hi guys,
Welcome to the forum.
1 - DC Loads : < 200W (a dedicated 48V DC circuit in house, phone charger, water pumps for aquariums, lights, Arduino ?, Various Electronics)
I don't think that this will end up being practical. 48 VDC is difficult to switch and fuse, and most appliances (such as a phone charger) will come with a 220 VAC plug anyway. Why not use the already existing sockets for these? Yes, it's a little more inefficient to convert from 220 VAC than 48 VDC, but I think you'll find the difference is negligible.

A lot of us wonder about ways to "soak up" wasted solar production, myself included. I'm still keeping an eye out, but I suspect there isn't much that can be done. However, with 7 kW of solar panels, you would have more incentive than most to find a use for the excess energy. The trouble with water and home heating is that you need more of it during the time of year that you have least solar production: in winter.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, PIP-4048MS inverter, 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-4048MS and PIP-5048MS inverters

Post by jonescg » Tue, 26 Mar 2019, 10:22

coulomb wrote:
Tue, 26 Mar 2019, 08:52
A lot of us wonder about ways to "soak up" wasted solar production, myself included. I'm still keeping an eye out, but I suspect there isn't much that can be done. However, with 7 kW of solar panels, you would have more incentive than most to find a use for the excess energy. The trouble with water and home heating is that you need more of it during the time of year that you have least solar production: in winter.
In summer, using excess energy to freeze water might be a good use of the energy, particularly if you can operate a chilled water circuit in the house in place of an aircon.
250 kg of frozen water would be a pretty neat way to store 'cold'.
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Re: PIP-4048MS and PIP-5048MS inverters

Post by paulvk » Tue, 26 Mar 2019, 18:39

For heating water there are 48v elements available to replace the ones in hot water tanks
a dual element tank would be ideal one for the grid (top one) the other dc solar (bottom one)

Here is a view of the wireless meter now operating on my system and its 40 meters
through various walls Note I fitted the high power radio modules nrf24L01 with rf amp and low noise amp
No mater how I take a picture with my tablet it always comes out upside down on the forum!
Also I had not set the correct Ah capacity in the meter so the SOC is not correct in the picture

IMG_20190316_092741.jpg
IMG_20190316_092741.jpg (734.89 KiB) Viewed 1511 times
[ Edited Coulomb: used "Place inline" to position image. ]

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

Post by coulomb » Wed, 27 Mar 2019, 07:35

paulvk wrote:
Tue, 26 Mar 2019, 18:39
No mater how I take a picture with my tablet it always comes out upside down on the forum!
Perhaps it was an Apple tablet; this seems to be a common problem. Apple and the rest of the world don't seem to be able to agree on one technical detail about the JPEG file format.

I took the liberty of rotating it 180° in Windows Paint, and resizing it to 50%. About 2 minutes work (in Paint).
PaulVK's wireless meter.jpg
PaulVK's wireless meter.jpg (301.93 KiB) Viewed 1494 times
Now the question is: does that look upside down on your tablet :?:
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, PIP-4048MS inverter, 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-4048MS and PIP-5048MS inverters

Post by paulvk » Wed, 27 Mar 2019, 15:38

It is an android unit and I rotated on paint as you did but it still comes out upside down
I even turned the tablet upside down and tried again!

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

Post by mks5 » Wed, 03 Apr 2019, 01:21

Good day,
I've got an Axpert MKS II 5kva 48Volt with 80A MPPT (4kw), which seems to match the PIP-5048MS.
I've got 12 320W panels attached in 4 x 3 strings with a SolarMD 7.4kwh LiFePO4 battery bank with its own BMS.
The inverter has firmware version 74.30 loaded on it.

I've noticed the presence of the floating voltage charge bug: Round about 8:00 in the morning the inverter reports about 1KW
input from the solar panels. If I open the circuit breakers of the PV lines, wait for the inverter to register the removal
of PV and closes them again the inverter reports about 2kw input from the solar panels.

The maximum charge current is set to 60A.

Is there a work around for this problem, since it looks like there isn't factory firmware available for this unit to be patched?
Will the v74 firmware (for the 64V battery option model) 'brick' the inverter?

Regards,
Frikkie

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

Post by coulomb » Wed, 03 Apr 2019, 08:00

mks5 wrote:
Wed, 03 Apr 2019, 01:21
Good day,
Welcome. I had to move your post, since you stated that it's an MKS II which is a high voltage MPPT model. [ Edit: but it can't be an MKS II after all, so it's moved back here where it started. ]
I've got an Axpert MKS II 5kva 48Volt with 80A MPPT (4kw), which seems to match the PIP-5048MS.
No, an Axpert MKS II matches the PIP-5048MG. [ Edit: however, it seems that you have the equivalent of a PIP-5048MS. ]
I've got 12 320W panels attached in 4 x 3 strings with a SolarMD 7.4kwh LiFePO4 battery bank with its own BMS.
The inverter has firmware version 74.30 loaded on it.
? Well, that seems to be a 145 V MPPT firmware, and if you are connecting it with 3S panels, you're apparently trying to keep the PV voltage under 145 V.

Can you post a photo of the larger sticker with the bar-code and specifications on the side of your machine, please? It could be that our information about model names is wrong, and it would be good to get that corrected.
I've noticed the presence of the floating voltage charge bug: Round about 8:00 in the morning the inverter reports about 1KW
input from the solar panels. If I open the circuit breakers of the PV lines, wait for the inverter to register the removal
of PV and closes them again the inverter reports about 2kw input from the solar panels.
It would be more convincing if you are able to confirm that the battery voltage with about 1 kW of charge was keeping to around your float voltage, and that after the "PV reset" at 2 kW charge, it soon exceeded that voltage.
The maximum charge current is set to 60A.
Presuming that the firmware is similar to others, that would mean that your current threshold is about (60 A / 5) - 1 = 11 A on the battery side, or a bit under 600 W. f you notice your charge current not returning after a < 600 W cloud, then you have the premature float bug.
Is there a work around for this problem, since it looks like there isn't factory firmware available for this unit to be patched?
No, sorry.
Will the v74 firmware (for the 64V battery option model) 'brick' the inverter?
? You say you already have 74.30 firmware.
But most likely, using any available patched firmware, if you force it in there, it won't work as expected, and will most likely cause even more problems. You then won't be able to "roll back" to 74.30.

Sorry to have to tell you that. However, you may be able to help others with the photo of your sticker, as mentioned above.
Nissan Leaf 2012 with new battery May 2019.
5650 W solar, PIP-4048MS inverter, 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-4048MS and PIP-5048MS inverters

Post by weber » Wed, 17 Apr 2019, 09:27

Welcome @suorama @apam and @Robbe01. Thanks for your input. I've started a new topic for the PIP-5048MK (Axpert King 5K) and moved your posts there, so they don't get lost in this huge topic. I'm sure we'll be hearing a lot more about the PIP-MK in future.
One of the fathers of MeXy the electric MX-5, along with Coulomb and Newton (Jeff Owen).

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

Post by suorama » Wed, 17 Apr 2019, 12:02

weber wrote:
Wed, 17 Apr 2019, 09:27
Welcome @suorama @apam and @Robbe01. Thanks for your input. I've started a new topic for the PIP-5048MK (Axpert King 5K) and moved your posts there, so they don't get lost in this huge topic. I'm sure we'll be hearing a lot more about the PIP-MK in future.
Thanks =)

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

Post by Honu » Thu, 25 Apr 2019, 17:58

coulomb wrote:
Tue, 26 Mar 2019, 08:52
Welcome to the forum.

I don't think that this will end up being practical. 48 VDC is difficult to switch and fuse, and most appliances (such as a phone charger) will come with a 220 VAC plug anyway. Why not use the already existing sockets for these? Yes, it's a little more inefficient to convert from 220 VAC than 48 VDC, but I think you'll find the difference is negligible.

A lot of us wonder about ways to "soak up" wasted solar production, myself included. I'm still keeping an eye out, but I suspect there isn't much that can be done. However, with 7 kW of solar panels, you would have more incentive than most to find a use for the excess energy. The trouble with water and home heating is that you need more of it during the time of year that you have least solar production: in winter.
Thanks Coulomb,
Why a dedicated DC circuit... mmm perhaps i'm wrong but i feel that shutting the inverter off during the night is better, my aquarium pumps and heaters need to run 24h24, that's roughly 60W pump and 300W heater (heater will only be used to keep water over 18°C during the night, security cause it should never happend, an other one working on AC will get the temperature to 23°C the day).
The thing is that batteries are expensives and inverter at low load got pretty bad efficiency, like on a 5kW inverter if i draw 60W then it will end use something like 100W.
Image

Dc to DC converters are dirt cheap, adding a 48V to 5V converter to charge my phone seems efficient and cheap.

But point taken on the difficulty to switch and fuse, still this 48V circuit will be a "low cunsumption" circuit, not more then 15 amps, it would mainly be for ghost night consumptions.

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

Post by paulvk » Thu, 25 Apr 2019, 18:18

I run a 24 port 10/100 switch , my VOIP ATA , wifi access point , security light and a micro-controller tcpip remote control off 48v via dc/dc converters the total drain is less than 2 amps Note the access point has POE so it is powered by its own converter.
Switching and fusing 48v is not difficult some of the mains circuit breakers are rated for 48v DC use , switching by relay works fine and using a spark quench circuit around the contacts saves them from wearing

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