Easy problems to solve! Glad to help! below...
On Tue, 21 Sep 2021 17:55:01 -0700, William Miller wrote: Friends: I have installed only a few Xantrex XW systems in my career and it has been a long time since the last one. I've got one with a problem and I need help, please! I installed a replacement set of Deka flooded, 2 volt, steel jacketed batteries about a year ago. The batteries are not performing well. The customer reports low voltage alarms and generator run time when with the previous batteries this would not happen. Coincidentally I installed an identical set of batteries on an Outback system in the same area at about the same time. After a few hiccups (two premature cell failures and some adjustments in charging parameters) the batteries in the Outback system are performing well. The charge parameters for the two systems are identical. The main difference is the XW system is set to terminate charge based on charge taper and the Outback, without an FNDC, terminates charge based on elapsed time. All the way back to Trace, Xantrex and Schneider terminate at 2% of programmed battery capacity. The programming of capacity is the tool to adjust for longer absorb, if needed. According to the manual, one is supposed to be able to set the battery AH capacity to zero to allow the absorption cycle to terminate based on max charge time. We would like to experiment with this. However our system will allow only a minimum setting of 50 AH. The firmware version is 1.00. 50 will be fine set it there and you will get the full absorb time you program. If this is a grey box XW6048, it had it's last firmware at end of support 10+ years back and was 1.07 Firmware is at https://solar.schneider-electric.com/products/discontinued-products/ Also, I find it odd that the XW system will allow equalization for only one hour, with no option to change this duration. Am I understanding this correctly? This issue, I was told was from a lawsuit battery fire. The workaround if you want longer absorb time is program float for the EQ voltage and remember to set it back when you are through! Most people only do a 1 hour EQ or they do more of them. Either way it works fine. The advantage to programming float to EQ is all mppts will run the EQ. Has anyone experienced any of the occurrences I have cited above? Do I need to upgrade the firmware? The last time I upgraded firmware it took me all day due to how lame the process is. I have the original dongle. Is that sufficient? Any words of advice on the process? I do not think it is lame, you should practice it if you never do this (make sure drivers are good for your laptop) before you go to the site. There are 3 ways to do firmware and each is pretty easy, to me. Combox, Gateway, and configuration tool. Good Luck! Thanks in advance. I hope I am not asking for more help on this forum than is appropriate... William Miller Miller Solar 17395 Oak Road, Atascadero, CA 93422 805-438-5600 www.millersolar.com [1] CA Lic. 773985 Links: ------ [1] http://www.millersolar.com/
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