question

Good day
I hope that maybe a staff member or advanced installer could add some more clarity on how the VRM alarms work please. I got 48 FW batteries in the field, so not my first one.

Problem:

I am having trouble with Battery Monitor (512) alarms on 2 of my sites. Every now and then the following 3 alarms appear (in Alarm Logs on VRM):

• Battery Monitor [512] Automatic monitoring High charge current alarm: Alarm
• Battery Monitor [512] Automatic monitoring High battery temperature alarm: Alarm
• Battery Monitor [512] Automatic monitoring Low voltage alarm: Alarm
• once even a Cell Imbalance was thrown in there

According to my distributor, the battery BMS sends alarms to the GX which in turn reports them to VRM.

Freedom Won insist they do not send alarms to the GX, but only values. They want me to adjust the values as to not trigger these alarms, but no-where can I find a place where I can adjust the low/high values for battery temp, volts or current.

Few notes:

1. They do not clear by themselves, you have to manually clear them. Once manually cleared, they stay way (don't reappear strait away). So far it has been more than a month apart;
2. If you search them in ADVANCED, you have to zoom in almost to a minute interval before you see them in in log, the last one I zoomed to 0.5s interval, and still count not see the alarm on the 'Battery Warnings And Alarm [512]' widget. I will attach one I was able to see the alarm in the alarm widget, but unless you zoom in this much, you don't see it.
3. you never see the low/high value in temp/current/volt widget, but that could be due to the nature of average-per-minute logging, which is understandable;
4. One GX is running 2.83 and other runs 2.85. One suggestion by FW was to 'roll back to a previous firmware', and once I finally got a answer on the last stable firmware they recommend, it was 2.85, so I am not sure if that person can help me. I gave them access to VRM, but they did not ever bother to log in, just generic responses;
5. On previous occasion we have requested FW to log in remotely, reload battery firmware and go thru all settings;
6. Inverters (both is MPII 5kVA) are running 490 or higher, MPPTs are also on latest firmware;
7. One site is a UPS, newer site has a RS 450/100 MPPT and a SmartSolar 150/60;
8. One site (UPS) has a FW5/4, other site (with MPPTs) has 2x FW10/8, both is on firmware 6.8 according to VRM Remote Console;
9. On the one with MPPTs, it happened once at 17:56, on the UPS site it happened twice, once at 3am, once 8pm (real estate office, no-one present)
10. not one was related to a load shedding schedule, high usage, extreme weather or any other abnormality;
11. I am convinced it is a false alarm from battery BMS, but that is my opinion. If correct, was hoping there is a way to delay false values/alarms like this and only if they occur for longer that a set period, like a minute, to log them. If FW is correct and there is a place where I can adjust temp/current and V values, that would be the jack-pot solution.

Images:

(see note 2 above)

If someone could help me understand:

• Maybe I missed the place where one can adjust these values
• Get clarity on whether the BMS send these alarms, or whether it is just values, that the GX/VRM interpret as alarms.

If anyone want to discuss telephonically: Schalk 07 437 7620 (also for WA) schalk@baysolar.co.za