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mppt rs

Use Solaredge SMI 35 with RS450


I have an array with 8 modules connected to an Solaredge Safety Monitoring Interface 35 (SMI35)
I want to connect it now to my Victron with an RS450.I know optimizers are not good or not allowed with Victron, but hooked up via SMI35 possible? Does anyone know something about it?

ppr asked
ppr answered ·

2 Answers

MPPT RS 450/100 Error 117 Firmware incompatible


one of my MPPT RS 450/100 shows in my Venus (version 2.73)


the firmware ist 1.05


there is no newer version availiable.

i tried

- mppt rs to factory defaults

- reboot of all devices

i have 2 other mppt rs 450/100 with the same(!) firmware, and i got no error in the venus.

is there a way to downgrade and new upgrade the mppt rs ? or reupdate with the same version ?

Or other idea ?



smueff1970 asked
Warwick Bruce Chapman commented ·

3 Answers

MPPT RS 450/100 Error 201 each morning (FzSonick)


each morning my 3 MPPT RS shows in the display




I switching the power switch on the 3 mppt rs off and on and it will be working. on the next moring the same problem.

the resistors R207, R208 looks good.


1 MegOhms, 1%, Metalfilm

At the moment the voltage on my salt batteries (FZsonick) are low and all devices are off in the night.

Please help.



smueff1970 asked
mvader (Victron Energy) commented ·

1 Answer

MPPT RS 450/100 Error 35

Hi there,

Recently I saw an Error 35 for no obvious reason on my MPPT RS 450/100. Configuraiton is 9x 375Wp panels on each tracker, east-west configuration. The short circuit current of the panels is around 11,5A according to the flash-list of the manufacturer with a Imppt of around 10A.

The error did happen when there was sun / clouds in short alternation leading to sharp bumps in solar production. Voltage was around 350V according to the logged data, my battery voltage is between 46V and 52.4V (pylontech battery).

Any clues what might be happening here? The unit is two month old...

lukas asked
Warwick Bruce Chapman commented ·

9 Answers

MPPT RS 450/100 error 35

Ok, so I have already read the other topic relating to this but that was an old post pre firmware v1.04 where there was a known issue with v1.03 false reporting error 35.

We have a few installations where we are getting error 35 popping up from mid/late morning onwards.

Clear days, no clouds.

All mppts updated to v1.05

PV config as follows - 9x Suntech 370w panels per mppt input on north facing ground mount array.

Voc max calculated to be 393V

Isc is 11.49A

Batteries are Pylontech US3000 set to float at 51V so satisfying the 8x rule as stated in the RS manual. ( float > Voc max)

Sites average temps during the day are ~30°C and above ( rural Western Australia)

Everything seems to satisfy requirements yet still getting the error 35.

So I know that error pertains to over voltage of the pv array but I don't see it possible.

If its not a firmware bug as per v1.03 then what else could it be?

I know max PV current is 20A per mppt input, but have read that you can exceed that somewhat without harm as long as the PV is not connected reverse polarity (voiding warranty in that case)

In this instance if we were to parallel strings, we would be at 22.98A Isc.

Would we be better off rearranging each MPPT to 2x parallel strings of 4 or 5 to eliminate the error?

hooky asked
entaran commented ·

4 Answers

MPPT RS450/200 display contrast

Does someone know if it is possible to adjust display brightness on the RS MPPT?
The contrast on mine is so high I can not read anything. Thank you.
I wont believe that this can not be adjusted via software.

ppr asked
ppr commented ·

2 Answers

MPPT RS - 450/100 Isolation Resistance


is it possible, to show the Isolation resistance of the strings connected to the MPPT RS - 450 Series? It would be a very nice feature, to log this over time, when it is for example raining. I can't find it in Modbus Registers Whitepaper. Actually this is a great feature, but Iam now a little bit disappointed not seeing these values anywhere...

Maybe you have plans to add these values in future, or is it just not documented?



steffenp asked
shaneyake commented ·

2 Answers

MPPT RS 450/100 connect via VE.can to Venus GX


i've 3 MPPT RS 450/100 connected via VE.Can to Venus GX.
At the end of the VE.Can bus are resistors connected.
I used normal UTP Network cabel cat.6. Max. Length of the cable is 3 meters.

Firmware MPPT 1.05
Venus 2.73

Remote Console
Settings/Services/VE.Can i cannot see any devices.

It seems the VE.Can is disabled ....

With the VictronConnect App connected via Bluetooth to the MPPTRS i found
no settings about VE.Can.

I hope everybody has an idea.

Thanks Thomas

smueff1970 asked
mvader (Victron Energy) commented ·

3 Answers

MPPT DC input


On the MPPT RS450, can the DC input be hocked up in series? If you have a string with 8 and 4 modules, 12 are too high voltage. But if you can but MPPT1 in series with MPPT2 it would work. Does someone know if that is possible?


ppr asked
mvader (Victron Energy) answered ·

1 Answer

RS450/100 too low numbers?


I just extended my install with Victron MPPT 450/100 but getting very low numbers and doesn't seem to be right, my solar panels are JA 540MR in 5S oriented to the east, so from 8am-12pm I anticipate at least 500W (1100W/m2 installed x 0.1 sunny winter coefficient ) but getting 0-30W . Any idea why this is happening?


Csaba Köböl asked
Matthias Lange - DE commented ·

2 Answers

MPPT RS 450/100 DC input voltage swing


on tracker of my MPPT RS shows this


The tracker will not activated. No error.
Have everyone an idea ?

Is that a hardware problem of the MPPT RS ?



smueff1970 asked
smueff1970 answered ·

1 Answer

Anzeige des 450/100 MPPT im Portal - Es wird nur 1 MPPT angezeigt


vielleicht kann mir einer von Euch einen Tipp geben, warum bei der Verwendung eines MPPT 450/100 im Portal unter meiner Installation von den beiden Strings nur 1 angezeigt wird. Lokal werden mir jedoch beide Strings/Tracker angezeigt.

Bin für jeder Tipp dankbar !

louvre asked
Matthias Lange - DE commented ·

9 Answers

Problem with MPPT RS 450/100 performance compared to 250/60


ive in issue with the Performance of the mppt rs450/100

as you can see in the Pic.


MPPT 250/60 with 2x4 REC Solar Alpha 395 (so you can devide the mesuremens by 2)


MPPT RS 450/100 with 1x4 REC Solar Alpha 395

both has the same conditions in diffuse light as shown in the PIC

Cabeling is OK!

also if i switch the charge controller the MPPT450/100 does the same!

The Performance is just half of the 450/100 compared to a 250/60 on the same array.

Any Idea looks for me as the 450/100 has an software Issue.




stemue asked
stemue answered ·

7 Answers

Solar panels with different spec on MPPT RS 450/100 PV-strings

How similar must the spec of the PV-panels be when connecting two different PV-strings to the 450/100? What are the limitations?

Could I have 6 x 500W (60,4V VOC, 9,84A) panels on PV-string 1, and 6 x 360W (46,45V VOC, 9,23A) panels on PV-string 2?

Best regards, Nils

nils-ihlen asked
basil katakuzinos answered ·

3 Answers

SmartSolar MPPT RS & Inverter RS Smart --> 3 Phase Setup possible ?

According to the Data Sheet and the manual a synchronised Parallel Operation with up to 25 devices connected via VE.Can is possible.

Is a 3 Phase system Setup also possible ?

martin-fi asked
martin-fi answered ·

2 Answers

MPPT RS 450/200


I would like to have some clarification about internal details of MPPT RS 450/200.

MPPT RS 450/200 has 4 MPPT trackers in it.
Does it mean that 4 independent PV arrays can be connected?

Koul Alim asked
jbakuwel answered ·

1 Answer

SmartSolar MPPT 100/30 - Batterieeinstellungen für 2 Batterien EXIDE Equipment GEL, Type:ES1600

Hallo Zusammen,

ich habe einen SmartSolar MPPT 100/30, der zwei Batterien laden soll.

Die Batterien sind paralel angeschlossen.

Der Batterietyp lautet: EXIDE Equipment GEL, Type:ES1600, EAN: 3661024035767

Kapazität (Ah)= 140, Wattstunden= 1600W

Frage: Welche Einstellungen muss ich im Solarregler vornehmen? Oder reicht die Standardeinstellung im Regler?

freue mich auf Ihre Antwort.

sualki asked

0 Answers

MMPT RS 450/100, MP2 and Fronius

Hello to all,

I had the following “On grid” configuration:

  • 1 Fronius Symo 10.0.3
  • 1 Multiplus 2 GX - 5000/48 “hooked” on phase 1
  • 1 three phases Smartmeter
  • 1 Smartshunt 500/50ma
  • 220 Ah Li Ion batteries
  • 18 solar panels 370 wh each in two strings – 10 on one string and 8 o the other. (intention is to install another 10 panels)

As this year the grid electricity starts dropping every week (they are replacing the old network) I decided to get an MPPT 450/100 to make it work in parallel (Off-grid during the electricity outages) therefore I disconnect the 8 panels string from Fronius and I connected it to the MPPT.

MPPT and Smartshunt are connected to the MP2 via VE.Direct.

The main issues are as you can see in the prinscreen of VRM or console:

  • When there is a high load, the system is getting the power from the batteries and the MPPT goes to 0
  • Is throttling the Fronius inverted to 50-60% of normal production and is getting the difference from grid.



The funny part is that if I am connecting to the MPPT via Bluetooth or in the console and I am looking for the production of MPPT is shows about the right amount but somehow this is not showed in the VRM neither console Pages. I have no idea which ones are the right values.



adrianevd asked
adrianevd edited ·

0 Answers

Smartsolar mppt 450/100 mounting holes



How am i able to mount the mppt without access to the upper mounting holes? Bracket can't be used as this will be used in a moving vehicle.

djrmml asked
djrmml answered ·

3 Answers

Matching SPD to MPPT

This is a question I have been discussing with colleagues and there seems no clear answer.

I have noted that most of the SPDs on the market are either Uc 600VDC, 1000VDC or 1500VDC. But our MPPTs are 150V MAX, 250V MAX or 450V MAX.

It seems thus, that a 600VDC SPD might protect something in the system against over voltage but that would not include the MPPT which would be exposed to over-voltage before the SPD had begun protecting (Uc).

Should we not be getting 145V, 245V and 445V SPDs manufactured which match the Victron products to properly protect MPPTs against over voltage? I have spoken to a manufacturer willing to do this but MOQ is 250 units which is a bit much for me to "test" the concept with.

Any insight would be valued.

Warwick Bruce Chapman asked
solarhack commented ·

2 Answers

Victron mppt 450/100 not reducing production - external control


Using a victron mppt 450 /100 with a quattro 8000 and a gx.

The mppt is set to be controlled via external control.

The quattro is configured to stop charging at 48V.

However the mppt keeps pumping amps into the batteries and not stopping to charge.

Carlos Carvalho asked
Carlos Carvalho commented ·

4 Answers

Error codes on MPPT RS 450


I’m currently testing the new MPPT RS 450. I got twice the error code "#121 Tester Fail". I am not able to find the list of error codes for this equipment. Thanks in advance to point me this list.


yaute asked
yaute answered ·

2 Answers

MPPT RS case interferes with the VE.Direct connector

I am using a Victron VE.Direct cable with my MPPT RS 450/100. The position of the MPPT case means that the cable plug won't fully seat home in the socket of the MPPT. More than once it has not made a connection between my MultiPlus II GX and the MPPT. This seems like a design flaw and could be rectified by making up my own cable rather than using the Victron cable. Alternatively I could cut away some of the case but would rather not do this. Any advice?



paulcooper asked
paulcooper commented ·

1 Answer

SmartSolar-MPPT 2 string or 1 string


I have 2 diffrent angle panel strings becasue of my setup only 1 set can be angled at 35deg south facing and the other string only 12deg south facing. All panales are the same 1p5s 365w 40v VoC

My question is there any benerfit of 2 strings and there for using the RS 100 over 2s5p on a 250/60
There is no option to place them both at 35deg due to space.

Im in the uk hence the 35Deg optimum, the shed its on has a 12deg roof and not enough room to set them all to 35deg.

Obviously I could also go for twin 250/60 but being slightly more cost then the Rs100 it doesnt make sense to double up.

I'm making an assumption that the RS100 can take 450v on each tracker? as I coudlnt work this out based on the spec sheet. although possibly in the manual/setup if i looked harder



Edit: I can also see that while the 250/60 have 4xMC4 connectors as it only has 1 tracker it only really assist in connecting higher AMPs parallel settings by deviding them across 2 input pairs and I dont think it would assit with 2 diffrent angle string albeit they are both same south facing. I'm also expecting the lower ones on the roof to suff shading issue during winter and want to avoind them dragging down the other string which should have this problem

Noisy Boysie asked
Phil Gavin answered ·

2 Answers

MPPT RS remote on off and pylontech

After some clarification of the behaviour of the RS when connected to pylontech batteries.

Lithium pre-set is selected which in turn changes the remote mode to BMS, which would be logical.

DVCC is on on the venus device, pylontech detected over the can bus etc...

The MPPT RS shows networked operation as external control and BMS,


yet the RS stays in BMS off mode and will not charge.

Switching the remote mode to remote on/off with the stock jumper installed in the I/O plug enables charging?

I can't seem to find any information anywhere detailing the behaviour of these modes apart from the mention of the VEBus BMS, shouldn't the setting relate to all BMS's?

alan asked
alan edited ·

2 Answers

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