Vani

Hi. My data logger has been going intermittently offline every now and then. I press the button on the data logger for about 5 seconds and it usually resolves. Sometimes it takes an irregular sequence of button presses to resolve. I tried connecting directly to the logger to check/re-do the Wi-Fi it is connected to but it still disconnects after a while. I have not changed any electronics around the logger that could create some RF noise. Worked well for over a week and then disconnected about 4 times this weekend. Has anyone had this problem and any resolutions?

Hi. Thanks for the feedback. From your opening statement, i assume that you are saying that my plans will work as described. Just checking as you answered "Yes" to my 2nd question. Just for clarity. You dont have to use both MPPT chargers. It will still work if just one is connected?

I have a Sunsynk query but will give some background prior to the queries. I already have 4 X canadian solar 415W panels with a small 2.4Kw inverter. I want to upgrade the inverter to the Sunsynk 5KW without any batteries for now. Batteries and more panels will come later. Below is the spec of my panels. My queries are as follows: 1. Will the inverter work with just the 4 panels and no batteries installed? I understand the scenario when solar and utility are off. 2. I only plan on using 1 of the two MPPT controllers. Will this be a problem?

Will certainly try this. Thank you

i got the serial to usb cable. Installed the driver through device manager. Not getting any life from the inverter though. The application does see the new com port but no data coming through at all. Also tried allowing SNMP trap through the firewall but no luck. Anyone with any experience here?

Hi Just a query on the WatchPower application for PC. My inverter unit came with only an ethernet port. The cable is ethernet to female serial (RS232). I now need to get a male serial to USB as many computers dont come with RS232 anymore. Does anyone have experience of this working or not with the additional cable? Tried a normally wired ethernet cable but did not work. Does anyone know if an ethernet crossover cable will work directly from inverter to PC?

1. I set the battery type to user defined and it seems to have solved my high voltage issue. It now reaches the default bulk charging voltage of 28.2V and does not go beyond that. 2. i am going to change the DC cut-off to your suggested 23.7 and monitor it from there 3. I have set the max utility charging to 20A which is the lowest on this unit. 4. No other info on the menus about PV current. I am going to try a DC clamp meter. 5. It was always my plan to go for one more 415W panel Thanks very much for the information. Very helpful indeed.

I have recently installed a 3kva/2.4KW Open Range Solar inverter. My aim was to create a temporary backup system. Probably an Axpert brand. I have 2 X 105Ah (2 X 12V = 24V system) batteries, flooded lead acid. Before i installed the panels the utility line charged the batteries to about 28.2V and then floated at 27V until there was a load again. To get max life on the batteries i made the following settings. Setting numbers on my inverter indicated as well: 1. Source priority is set to Solar 5. battery type is set to Flooded lead acid 11. Max utility charging is 30A (Default) 12. Voltage point back to utility is 24.5V (Dont want DOD to go below 50%) 13. Voltage point back to battery is 27V (Default) 26. Bulk charging voltage is 28.2 27. Floating charging voltage is 27V (Default) 29. Low DC cut-off voltage is 24V (Again to save the battery) I notice that solar charges the battery up to 30.4V and then hovers there for quite a while until battery is required again. Is 30.4V too high to charge the batteries up to??? My solar charger can handle a max of 80V and 50A. I have two 415W canadian solar panels. Input Voltage ranges from 25V to about 40V as they are wired in parallel. Going to add another panel so that the battery is not utilised as often as it is now. My hope is that the solar will cover a max of 500W demand during the day. I have no way to check what amps are coming from the panel as the inverter only shows input voltage and not amps. So my questions are: 1. Is 30.4V too high for the batteries when charged by solar 2. How else can i check what amps are delivered from the panels. 3. Other than the solar charger max of 80V and 50A, Is there any maximum for the number of Watts that can pushed to the inverter? I want to add a few panels and want to try and work out the ideal configuration without going too close to the maximums. Any responses will be appreciated.