Has anyone attempted to use the com port on the HQST charge controllers to access status information? I have one remotely located that I would like to be able to keep an eye on it. The phone app is fine but I have to drive out to the location to use it. I have a remote wifi arrangement that...
I think that might be left over functionality. I have a small epever unit that has a third set of terminals for a DC load. I don't think it was capable of much. Maybe just some lights. Look one of the small EpEver's like the 30amp and you can see what I'm talking about. My larger 50 and 60...
I haven't seen that behavior either. That would be scary but likely not fatal. Btw, the shunt isn't going to lose you any significant voltage. Ohm's law: V = I * R. The resistance of the 75A shunt I mentioned is R = V / I or 0.0075 / 75 = 0.001 ohm's. So take that resistance and let's...
EPEver has a unit to coordinate the controllers; two actually: PT-ADP-PORT and PAL-ADP-50AN. I think the second one is a replacement. The nice thing about the first is it has one central connection for the battery sensor. They are also supposed to use the same settings. Not sure how that...
Hi fafrd. Do not use a BMS between your charge controller and your batteries. Every charge controller I've ever seen out there tells you to never disconnect the controller from the batteries while the array is connected to the controller. Will mentions this in his videos. Buy new batteries...
Hey jnrhome. I just noticed something that might help. I reconnected an MT50 to controller #1 and tried to change a parameter. It gave me a parameter error no matter what I did. EPEver has a list of rules in the manual about what parameters have to be greater than what other parameters. In...
Hi Fafrd. I would recommend the EPEver controllers. We have finally learned how to live with one another. I just replaced my cheap MakeSkyBlue third controller with a 5420AN 200V model. I don't have the third array up yet, but the Blue produced so much interference my monitoring circuits...
Yesterday, I experienced what you have been talking about with the controller not using your changed settings. I had bumped up both the boost and float values. The controllers went into float at the old setpoint. I went down and rebooted them and they switched back into boost mode. That's an...
That is strange. Mine seems to overreach as soon as it there is a hint at hitting the target voltage. How out of whack do your cells get? I have a little cell monitor that I connect to check but don't leave it attached. Mine get about 30mV out at most and come down to 8 to 10mV when charged...
Mine switched back to the inverter. I checked at lunch the transfer switch is set to 27 and 24 respectively. I'll have to adjust for it not reading the voltage right. I disabled my relay to control the transfer switch when I started to have issues. I'll have to go back. I don't have the...
Sounds like we are on the same page. I like your idea for setting boost and float. After a few sunny days, today is cloudy with rain forecast this afternoon. The transfer switch moved to building power at about 8:45am after the plant lights kicked in. The battery dropped to 24.4v. I know...
I'm learning something about these controllers. The settings are not well suited to systems with a continuous load on them. They work fine if you use your batteries at night and recharge them during the day.
Here's how I'm seeing it now, let me know what you think. First the boost only lasts...
Okay. That's weird. Something to try. Go to the forth option in the MT50 menu and go through all the settings. See if anything looks off. Make note of the boost reconnect voltage and the low voltage reconnect. Did you get any warnings...little red light and message on the screen? I...
A couple of things come to mind that might help. First are your panels in series or parallel? If in parallel you might not have enough voltage for the mppt controller. If you can remove both charging and load from the batteries, give them a half hour and take a voltage reading. Are they...
How are you making the changes? I assume you are using the software, right? You hit update, it says save successful, right? Have you tried to reload them to see if they took? Have you looked on the MT50 to see if they are reflected there? I'm also concerned that I'm doing it right as well...