We dont see you as a customer so I can't see what tool you are using for configuration but we are happy to help none the less. Not sure what the support comment was all about... The wifi module ha...

The maximum current that we can set in the REC Active BMS settings is 350A, I need to increase it to 500A.Can I count on support?

We have just created several REC BMS kits to make it easy to purchase and save! You can find them here. REC Active BMS Kits REC 2Q 16S Kits REC Large Scale High Current and High Voltage Systems

@Rick Thanks for the notice. @tine Thanks for the quick turnaround. I have downloaded and installed the new version 1.6.3 (for HW v1.2), and confirmed that the version displayed is now 1.6.3 Un...

REC has fixed this bug in its latest release.  You can find details here. https://rec-bms-na.com/rec-bms-wi-fi-module-firmware-update-1-6-3-just-released/

After working with Wakespeed for more than 7 years we grabbed a Zeus around Christmas and threw it onto a test system we had set up.  It was still early in its evolution but seemed to be built...

@sturla Hello. Thanks for the reply, makes sense -- holding the SOC when desired.   The next release of WS500 firmware (2.5.2.) is in fianl QA and we can not make any changes, but wil...

Thank you for picking up on this one Al! The installation is on a 44 fot sailboat, with a Volvo Penta D2-55 engine, with two Delco 28si 200A alternators attached to it, one WS500/alternator. The h...

Hello, sorry for the delay. What is happening here is as the WS500 is running in Slave Mode it it following the directions of the REC BMS.  As such, there is no 'Float' to force to ...  ...

@Al Thomason ; Do you have any idea why I can´t get this to work as intended? 

In my continuing regression testing of an existing two-contactor system (Charge Bus and Load Bus) that has been upgraded to FW 2.9.2-2, I have uncovered the following error: I was trying to test t...

Hi Sturla, When the REC BMS is connected to the WS500 it will take over control of your Alternator charging but all safeties and interlocks should still over-ride the DVCC/CVCC control signal from...

Hi All, I have a sailboat setup with REC ABMS, 2 x WS500(200A alternators) and a Cerbo to monitor and control my LFP bank. All items involved run latest available fw versions. System config; ...

no, they are meant to drive something like an LED directly.  If you want to drive a larger load you will need a relay with a very low (15ma) draw or a powered relay like this. https://www.ama...

Do the Opto lines have enough current capability to directly drive the Tyco EV200AAANA 500 amp contactor when connected in series with it and a 12v source? (observing correct polarity)

Yes, you are right. IT is a firmware bug. I have tested this in the morning. If you set it to °F then it gets data from the entry window and sends it directly to the BMS without converting it ...

@Darryl  I only recently upgraded to FW 2.92-2. In the middle of trying to make sense of all the changes to the use of the relays and optos, I noticed once again that the WiFi homepage was re...

I have further info on the error.  The underlying BMS messages always use °C. Apparently, the values that are input on the page are always being interpreted as °C regardless of the opt...

Thanks for the feedback.  Pushing it on to REC . @Tine Andrejasic 

While going through and regression testing WiFi FW 1.62-12 after an upgrade, I discovered that the temperature settings on the Settings page cannot be properly set when the option dropdown is set t...

After formatting the SD card and loading the spiffs and updates files onto it, and powering up waiting another 8 hrs, I rebooted and FINALLY got the 1.6.2-12 FW to load on the WiFi module!

Mark,   Your WS500's will work fine but a 12V alternator will usually put out 15V max.  The WS500 will only control the current coming out.  You will need to find alternators that ...

Richard i have two ws500 that I'm preparing to install in catamaran yanmar 3jh40 with Valero 125A smart ready 12volt alternators i'm changing to 48 volt house battery bank question: Do I need t...

  The pdf diagram you sent does not show any shunts They are small.  Just zoom into the negative bus. I assume that I will install one 1000 Amp shunt on Batt "A" and Batt "B" negativ...

Questions: The pdf diagram you sent does not show any shunts I assume that I will install one 1000 Amp shunt on Batt "A" and Batt "B" negative cables? Where does the Wakespeed WS500 current se...

The shunt only gets installed at the Master when you have a high voltage series connected system.

no, the 1Q's are fine too.  You will be able to see the total current flow from the the Master.  To check that each shunt is working, jut power off one pack to verify each bank is working...

hmm... Does matter that I am using the 1Q units as slaves and NOT the 2Q's? If I understand correctly, I only need a shunt for each battery. In my case I need two 1,000A shunts as each battery co...

Good question, In this configuration you will only need 2 shunts.  You set the shunt coefficient in the Master and it will broadcast it to both of the slaves.  The Master will take the s...

QQ (quick question) How many shunts do I use for a 2 batt system using (1) REC 9M master and (2) REC Slave units? From this diagram, each battery has it's own shunt. This makes sense. Do I also u...

@Rick Thanks.  Since the non-regular flashing LED seemed to indicate it was doing something, rather than just flashing an error code, I left it alone overnight.  After 20 hrs it was still...

HI Rick, I will try those values and see what I get.  

@Bill For a 2000/50 shunt when I canlcuate it I get:  0 .01953125÷(500÷2000) = 0.078125 So for most standard ranges here are the coefficents 100/50 = 0.00390625 200/50 = .0078...

The update process first copies it to the SD card, then over the next several hours it slowly updates the local processor memory and then needs to be rebooted so that was likely your only issue. A...

I was updating my WiFi module (HW:1.2) from FW 1.5.4 to 1.6.2-12, and, despite being careful I seem to have screwed it up.  When the module seemed to be done updating, the WiFi AP came back up...

@Richard the current reading on my REC-BMS is reading about 1/3 of the value that it should when compared to a high quality Fluke clamp meter. I am using these coefficients that you provided a whil...

This subject was raised on another forum also where the OP stated "I found the issue... It was because I had the alternator capacity configured. This should not be configured as this feature is no...

Lets include Al from Wakespeed on this one.  He may some insight @Al  

OK, I solved my problem. There was a setting in the Cerbo GX that enabled the sending of NMEA200 Output data.  It had to be enabled.