Hey Jeremy, Its a 50/50 chance and all depends on what cell sequence you connected them in.  For instance, if you connect cell 1 -, then cell 4 +, you have put 13-14 volts on a 5V ADC module, or...

So about 9 months after purchasing the REC BMS I finally completed my camper van electrical system and switched everything on and immediately got error 10 on the BMS. I believe this is my fault ...

Tine has provided an updated 2.8.1 firmware bin file for the Active BMS.  When asked how he implemented the low temp change, this was his reply. \"No buzzer on the BMS but sent to the inverter a...

Ed, I am going to take care of this with REC and will post it to our REC North America site.  This is what I see as two possible solutions, depending on whether there is a spare input wired into th...

The Lynx Distributor uses an I2C bus to relay the 4 fuses and positive busbar state. Up to 4 distributors can be chained on the same I2C bus (A B C D). You need an I2C master system (+ power as Ric...

Well, you know with REC everything is possible when we spend some time and customize the code. I can make an update to silence the error 7 alarm. The programming/testing would cost 25€, played b...

That would be a great tweak! In order to run the heating system, the electrical system (and BMS) must be on. Another possibility is to have the audible alarm transition to 1 cycle per hour after an...

no, but its a good question, especially for RV\'ers.  Of course you can just turn off the BMS until your cells warm up but I wonder if that alarm could be tweaked to only emit a few times, then onl...

Does anyone know if it is possible to silence the audible alarm? I use my system in cold climates, and frequently have to listen to the low temperature alarm until the heater gets the batteries up ...

Hi! I am Carl Roberson from England. I am a HRM Essay Writing Expert, let me know if I can help you with anything.

PC software show identical values for Volts on alternator and battery even though rec bms reports 0.3v lower voltage on battery. Anyone else here experienced this? I have checked the cabling and it...

Yep, poles+12 and pully ratio is at least close. So I dont know if the reported engine RPM of 55 is just another random output or a miscalculation due to my set up. I did verify that engine RPM ...

I do not have any answers on the output of the rpm. It is a pity that the AST command does not display the alternator rpm. Have you used the SCV command to check the settings for the poles and pull...

Is engine RPM as reported in AST equal to actual RPM or in 10\'s? I finally have Tach working but the readout is 55 for my engine at idle. 550 would be closer, actual RPM was 625. I have the cor...

Yep. The config guide is a little confusing... at the header of the SCT instructions, it says no changes need to be made for the WS500 to operate normally. But if you want PBF to work, it appears F...

Reading the current Communications and Programming guide I believe that you have to set ForceTM = 1 in the $SCT line to get the tacho function to work. In the smartphone app this is a definite inpu...

Quote from Trond Arvid Røsvik on August 9, 2022, 4:38 am I use currently the VE-CAN port only, set to 250 kbps. A-BMS->Cerbo->WS500->NMEA2000 to the boat. This works perfect.  An bo...

Update: Well, the documentation seems a little misleading here.  The cables with label: (10) Battery Ground Sense (Black/Yellow Stripe) (11) Battery Positive Sense (Red/Yellow Stripe) &...

Hi Peter, My stator wire is connected, but I am not reading engine RPM. I have not \"ignored\" the sensor. Under the SCT command: ForceTM: <0, or 1> Setting the value to 1 will enable T...

I have been reading the documentation and looking at the Smartphone app prior to buying a WS500. One thing I have read is if you are not using the stator for the rpm then the Configuration and Prog...

I turned the MP3k back on and it did eventually begin to ramp down, however my cells were drifting apart pretty significantly, two around 3.53 and the other two down in the 3.4 range and dropping. ...

And to test powered up, you need to have your battery + and - connected as well   Just to make sure I understand this, the Alt +/- AND the battery (sense?) +/- need to both be wired up for...

thanks. PBF is set to 1 and WS500 does not read engine RPM. So if PBF needs tach data, then this could well be the smoking gun What was odd was, the system has worked well for a month of crui...

Hi, did you move the current sensor to the alt shunt?

Sorry, I tried to format the above for best readability, but it seems some of the styling did not take :(

Hello,  Today I updated my REC ABMS to 2.8 software.  At the time, my pack was measuring around 72% (3.25v per cell), and had not been recharging.  After the upgrade, the pack was reading 50% (Th...

Awesome, I can take it off of my Todo list :)

That was a typo.  The REC Active BMS is a standalone unit and if it were to be installed in a parallel arrangement the two active balancers will fight each other.  For a redundant system you can go...

I\'m very interested in this thread. For redundancy and resilience reasons I\'d like to run with two independent 4 cell packs on my boat. If I were to build it with two REC Active BMSs, a Cerbo GX,...

Yes, something is definitely limiting Field to 31%.. Could be the PBF, Pull back Factor, is this set to 0?   If not, then you have to setup everything so the WS500 reads the correct R...

Update: I received an updated 2.8 firmware for ABMS from Tine today, and it included a 2.8 manual which contains the updated diagram, which solves this all for me :)   Cheers

Hmm.. I read this, did the math, and double checked my settings but I still do not understand why it is not recharging. In order to trigger a charge, I have to set the  \"END of charging voltage hy...

Hello, Today I went to wire up my pre-charge module and noticed that the diagram in the latest REC ABMS Manual, as well as the lates REC Pre-Charge Module manual, illustrate what appears to be a...

Good morning! I am using a customized version of #7. The exit amps settings in #7 dont work for me. Anyway, I do believe some parameter is limiting Field to 31%. Not temps. I am using a PBF of 1...

Check you have the Firefly \"configuration file\" profile loaded.  You can download it here:  https://www.wakespeed.com/product/ws500-advanced-alternator-regulator/#wc-tab-title-support Also, ch...

The Q series has firmware that is keyed to the serial number, so you just need to send in your request to REC, along with your serial number and they will get you an update. It can be installed ...

Thanks, Firefly bats so no BMS. Dual engine. Controlling WS500 flashing Green Acceptance, slave WS500 orange flashing.

Does anyone know where I can get an updated software version for the REC Q unit that has this parameter option in it?  I have the 2.6 software of the BMS and the 1.6 version for the Wi-fi module bu...

I am having the same issue. Victron says I need ABMS firmware version  2.7 for full integration with the WS500 and mine is currently 2.6. All I find in downloads at REC is the manuals. I did get th...

In my opinion, you can allow the BMS to push out the battery temp but I would hardwire the current sensor in parallel with your Smart Shunt(just use a couple of ring connectors on the power wire lu...