Do your slaves have slave or standalone firmware?  A slave will flash red/green then go out until the Master connects Did you set the slave addresses to be different?

How can i clear the error? I have connected 2 BMS 2Q correctly. Is the Slave firmware wrong? FW: 1.4 I also tryed with 1 Slave.

you will likely need to clear the comms error before it will communicate, so connect one slave and try again

Hello,i have a problem with my Master device. The Wifi modul and the PC-Software can't reach the Master. (Adress 16).Wiring is OK. (and original)My BMS 2Qs (i have more) works fine with both. (Wifi...

Thanks for Sharing Jonny, this is great feedback. Rick @Tine Andrejasic 

I have now tested a bit with REC firmware 2_92 and WS firmware 2.5.3.Based on the analysis of data at low current <50A and it regulates up and down, I see that the RPM goes from 0 to 2300RPM (th...

Thank you so much for the offer of assistance, @Rick-admin ! I did end up grabbing a spare bms from ebay for a good deal. Tine did get back to me though and offered up a fix that requires the PC s...

We are currenty making our way back home and dont want to risk changing too much with beta software at the moment as we rely in it to work.   Besides. I do not have the problems you describe...

Tine sent me firmware v2_93, but I can't get DVCC to work, even after a full restart of all devices. When I go back to v2_92, DVCC works again. I have sent an email and am awaiting a reply.Tested w...

I have discussed this with Tine and he is tweaking the FW to see if we can help smooth out the cycling of the dynamic loads. @Trond Røsvik are you interested in testing this update? Best, ...

@Trond Cells are perfectly balanced and copper rails between cells. Works well at power above 50A. Is in dialogue with REC, which confirms a challenge with current regulation. What I now use is vol...

Then I suspect rhe BMS is detecting an imbalanse issue, possibly due to long cables between cells?    Monitor the high and low cell voltage from the BMS while charging at full power. 

I am finishing the install of my house battery system and will begin testing the various charging and discharging use-cases, including the bow thruster. I do not want the REC-BMS to shut down when...

Bill, Thats a whopper of a thruster.  By my  math, 950A x 24v = 23Kw / 746 = 30 HP!! Are you having issues now? If so, what is happening?  

I havent come across this issue so I cant help right away.  It may be you need to get around the bootloader to re-install it, but that is something only the folks at REC could do, or us with a...

I was hoping that some of the more experienced members on this forum can guide me on how to set/manage the REC-BMS settings for Dischange and Charge Current limits.  I've tried comphrhending ...

I don't have the rs485 to usb cable, but will likely have to purchase it.@Rick-admin , do you think this would work to reinstall an older version of the firmware? Tine still hasn't responded to my ...

@W  Maybe get back to the old firmware by using an old thrumb drive.

If anyone read my last post I had some issues getting my Rec Active BMS functional after replacing my Nation's alternator. Thanks to Rick's advice of checking my BMS fuses, it started working again...

Well, I pulled the bms and checked all the fuses, which were all good. When I reassembled everything, it all started working again. Think this likely reset the bms. Didn't know there was a battery ...

@Rick Thanks for the advice. I'll take a look later this morning. Would a blown fuse still allow the bms to turn on and sense the voltages as above? Although it says "cell voltage measuring error",...

It sounds like you may have blown some fuses in the REC BMS when you were moving things around. Also, how many beeps/LED flashes are you getting from the BMS?  This will give us an error code...

Hello, Background:For the last 4 years, I’ve had the rec active bms connected to my van power system. I have (16)280 amp 3.2 lithium cells oriented in a 12v 4p4s pack with 1120 amp hours of ...

Hi Trond, so nice to hear from you! I have followed you and Lars on Marinetraffic and hope it will soon be possible for me to travel too.Have you spoken to REC about this issue? In the past, Tine h...

Nice setup you have there now Jonny. Trond from Farco here., writing from Azores.  I also see the same thing, and it happend after updating the BMS to V2.9. Jumping from 0 to 50A up and dow...

It was an interesting hypothesis. I have serpentine belts on both dynamos and there is marginal stretch. I have run the WS-500 as a master in the past and it has worked fine, but it will probably b...

I think you may be dealing with dynamically induced cycling caused when you get acceleration pulses every time the engine fires and is most notable at lower RPM.  That's a wack of amps you are...

SOC is 64% and cells are perfectly balanced 0.003V difference.

Now I tested with a higher current and then it is stable. As you can see, the problem occurs when the power is below approx. 50A. Values ​​statra then to chase very much. Attach various images show...

can you get a better pic, which shows the legend on the left so we know what the colors mean, and scaled to fill more of the screen. Also, what is your %SoC of your cells? Could it be that you ha...

The LED is orange and the DVCC is working. Attach a picture, hope it can help.

Do you have any real time graphs that might help? Is your DVCC working (WS500 LED should be orange)?

Hi. I have challenges with regulating the WS500. I suspect NMEA conflicts, but I'm struggling to get an overview, and which unit I should change (instance). I have Cerbo-gx with os large (firmware ...

Ok Trevor, we can do that for you.  Please contact us at support@ogm-energy.com and we'll get you fixed up.

@Rick Hi Rick I have not been able to resolve this other than narrowing it down to a faulty connection with the AMP connector. Is there a warranty that would replace the wirring harness?

Solved the problem of buying an Android tablet:) Windows for REC, Android for WS and MAC for everything else. HTML or an app that is OS independent would be nice and avoid a number of user problems...

Thanks for the reply, but the problem is that I don't have access to the "NMEA advanced" menu when I use the WS 500 config tool for windows. I don't have an android phone and therefore don't have a...

@Jonny maybe this is helpfull. See wakespeed website. https://www.wakespeed.com/wp-content/uploads/Wakespeed-Victron-Cerbo-GX-Guide-Updated-with-DVCC-4.12.24.pdf

Hi. Is it possible to access the "advanced" menu in the pc software for windows to set up ws500 to support DVCC? I have followed all the requirements in the manual but cannot access: NMEA2000...

Resistors are 330 Ohms. Maybe there is a bad connection from the cable to the crimp or fronm the crimp to the pin.