Bret, I cant find your order in our system so I dont know the details of what your have. Did you try disconnecting the MPPT to see if the error goes away? Are you setting your addresses to 0 ...

I had to shut down my system to add an MPPT.  Turned off the REC, and opened my main disconnect.  Went to start it up, and I got an error 10. I have checked all connections and fuses, including ...

it for the Sunny Island. am i make the connection right?

The blue RJ45 looks like a terminator for your Victron end of the network. For your cable you can rewire the RJ45 or it might be easier to open up the DB9 connector and resolder your connections...

i cuted the wire and rearrange the order. am i do it right? what is this extra connector for? looks like pin 1 and 2 is connected together. do i need both for my SI?

Hi David, There are many of factors that are used to calculate your SoC, so we need to look at more than just the current sensor. First, grab a DC multi-meter and compare your BMS values vs t...

Rick, thanks for this post. I purchased  the \"REC Current Sensor Shunt 1000A\" and seem to have a slight  misconfiguration of settings as the system is pessimistic enough that it resets SOC to 100...

We have now arranged to have the REC BMS to Sunny CANBus cables manufactured and stock should start arriving mid April 2022 https://www.offgridsoftwaresolutions.com/product/rec-sunny-canbus-cabl...

I will see what I can do.  Thanks

From what I could find I would suggest you use a REC to Victron cable and then adapt the RJ45 end for the Sunny pinout. link to cable:    https://www.offgridsoftwaresolutions.com/product/rec-vic...

Which cable do I use?

The diagram on page 7 is correct.  All wire numbering is correct on both pages but on page 8 the diagram is also correct if you are looking at it from the \"cable out\" side (when plugged in this i...

Hi Gary, In a 24V system you would use the REC Q Series BMS to provide the following functionality: connects to your Victron Cerbo and becomes its DC source.  Some page snips of what it loo...

On page 7 of the manual, the illustration clearly shows pin 1 in the upper-left corner of the connector on the unit. On page 8 of the manual, the illustration clearly shows pin 1 in the upper-le...

Ben, That is helpful. The house batts are 450 a/h of AGM. I do have 100 watts solar panels. MPPT controller set to default AGM profile. I will test turning loads on, turning solar off. Simple bo...

Hello there, I am in a similar situation. I have installed the following: 1) CALB lifepo4 180 amp batteries in series of 8 to create a 24 volt bank. I have 2 of these banks one in front of t...

If you tacho stops this means there are NO amps produced by the alternator. The WS500 does do the best things for your battery, IF full stop charging. In the standard lifepo4 profile when batte...

New installation of WS500 seems to be working well. Simple installation on a Jason 35\' with a single alternator on a Beta28. Tachometer is driven by alternator. When batteries are full the WS50...

If this is a concern in your configuration you have a couple of options Break out these large loads onto a separate bus and use a second contactor to disable these loads when you have a cell g...

Hi Rick, Thank you very much for your reply! However, I don\'t understand yet how I can use the optocouplers inside the REC BMS to behave similar to the main relay (opening for OV and UV), so t...

Hi Sebastian, The REC Active BMS has a spare relay output and opto output that can be programmed to cut in/out at a desired voltage, so one for your Cerbo and one for your WS500 feature In shoul...

Hello, I am currently laying out and planning my setup for a boat conversion to LiFePO4 that I want to do. I will install 560Ah of LiFePO4 (2P4S EVE cells), a REC Active BMS, Cerbo, WS500 and Ba...

On my van harness, I measured my alternator lines (temp sense and field/stator) to be 27 ft from the wakespeed harness connection to the alternator connection.  The ignition wire was similar.  All ...

After reading the first post again, the idea of using the Feature IN set to 0% might be worth exploring if for some reason you did not want to interlock your ignition enable wire.  If used in conju...

Awesome, Rick.  Thanks for the quick reply to both questions.

the aux contact is only 2Amp rated, thats why I had suggested a parallel relay for field interlocking. For your safety interlock you might want to consider using your Opto relay output for your ...

Looking at the details about the Tyco Kilovac EV200 contactor it seems there’s a model with optional auxiliary contacts for monitoring the state of the contactor.  This model is part number EV200H1...

The REC WiFi module is capable of operating as both an Access Point and a Station device. This video shows you in a step by process how to set it up as an STA device on your home subnet. https:/...

Sure, the alternator and ignition branches are about 5 ft  and the battery branch is about 20 ft.  We\'ll get that info added to site.

Can you confirm the length of your van/rv harness,, could not find the info anywhere.   Thanks

Can you elaborate or do you have this documented anywhere?  How did you communicate these values to the WS500?  I\'ve been kicking around a similar idea and replacing the REC BMS shunt data (slow) ...

There are several concepts currently in practice and some can be used together, but there seems to be no \"one fits all\" solution. Some of the ones I am familiar with: Add a FET splitter t...

Good info, thanks for sharing!  

This sure is moving along slow..  Hope they can make this integration happen soon!

From Wakespeed: 1. The connector used on the Field/Stator wires at the alternator is a Deutsch DTM04-02. They are available through Digikey, Mouser, or most other electrical suppliers (I’ve also s...

copy.  look forward to hear what you come up with.

Guys, after a good conversation with Al at Wakespeed I have deleted the last few posts.  He and I reviewed the operational integration and how it all comes together and they have pretty much done a...

Hi Rick, I have the same concern about insuring that the alternator never sees a load dump due to the REC contactor opening on a fault.  Is it the case that the contactor is opened on any of the...

I am testing with beta firmware and my numbers are all over the place right now, but I will when I can.

You can also try wiring both your REC shunt cable and your WS500 shunt wires to your battery shunt in a WS500 battery centric configuration.