GXMnow
Solar Wizard
- Joined
- Jul 17, 2020
- Messages
- 2,740
So I have a new issue...
I got up this morning and I like to check how low the battery went. WOW!!! What happened?
I doubt this was my PLC. It does not try to adjust charge current before 6 am. This started happening shortly after 5 am, I was still asleep. Discharge current shot from 9.44 amps to 74.33 amps. At 53.26 volts, that works out to over 3,900 watts at 5:07 am. The current tapers off to 51 amps after 3 minutes, but then the XW switches to charge mode, pushing 19 amps. But then it swings more and more for 90 minutes. The peak discharge rate hit 88.48 amps at 52.38 volts for over 4,600 watt at 6:13 am. It was just a short peak, but if only my normal overnight house load was running, that could be an export of close to 4,000 watts. That may have just exceeded my 16 amp export limit. It was short, and the 20 amp breaker obviously didn't trip. The highest charge current peak hit 56.64 amps 53.34 volts just over 3,000 watts at 6:15 am, that is after my PLC would normally start adjusting the current. The last of this event ended at 6:42 am and the PLC resumed proper export power control and zeroed the export power properly again. And it smoothly transitioned into charging current control as the sun rose about 8:40 with no sign of any issue.
And once again, there is no entry of any issue in the event log. But it sure looks like the grid was coming on and off that whole time. But with no solar coming in, it was going into charge each time the grid came back? But then it stayed out of charge once the grid was stable? That's not what it usually does? This is just odd?
I just looked at the "Energy Comparison" chart.
This only shows the full hour totals, but it is still pretty telling. The output back to the grid went from just 66 watt hours in the 4 am hour to 792 watt hours in the 5 am hour and 698 watt hours in the 6 am hour. But then back to nothing in the 7 am hour. Grid input (consumption) also went way up, from nothing overnight to 639 watt hours at 5 am and 691 watt hours at 6 am. But if you look at the net grid power, the total for the 2 hours is still just 160 watt hours, or 0.16 kilowatt hours, so the total power was really nothing.
The battery energy is really odd.
My system typically discharges between 700 and 1,200 watts through the night as things cycle on and off. So all the hours up to 4 am are in the range, discharge only, no charging. But then the 5 am hour has a discharge of 1.5 KWHs AND a charge of 0.448 KWHs. Net just over 1 KWH of discharge, which is about normal. And the same happened in the 6 am hour. 1.4 KWH of discharge, and 0.508 KWHs of charge.
I will do another Gateway reset and see if anything shows up in the event log.
I got up this morning and I like to check how low the battery went. WOW!!! What happened?
I doubt this was my PLC. It does not try to adjust charge current before 6 am. This started happening shortly after 5 am, I was still asleep. Discharge current shot from 9.44 amps to 74.33 amps. At 53.26 volts, that works out to over 3,900 watts at 5:07 am. The current tapers off to 51 amps after 3 minutes, but then the XW switches to charge mode, pushing 19 amps. But then it swings more and more for 90 minutes. The peak discharge rate hit 88.48 amps at 52.38 volts for over 4,600 watt at 6:13 am. It was just a short peak, but if only my normal overnight house load was running, that could be an export of close to 4,000 watts. That may have just exceeded my 16 amp export limit. It was short, and the 20 amp breaker obviously didn't trip. The highest charge current peak hit 56.64 amps 53.34 volts just over 3,000 watts at 6:15 am, that is after my PLC would normally start adjusting the current. The last of this event ended at 6:42 am and the PLC resumed proper export power control and zeroed the export power properly again. And it smoothly transitioned into charging current control as the sun rose about 8:40 with no sign of any issue.
And once again, there is no entry of any issue in the event log. But it sure looks like the grid was coming on and off that whole time. But with no solar coming in, it was going into charge each time the grid came back? But then it stayed out of charge once the grid was stable? That's not what it usually does? This is just odd?
I just looked at the "Energy Comparison" chart.
This only shows the full hour totals, but it is still pretty telling. The output back to the grid went from just 66 watt hours in the 4 am hour to 792 watt hours in the 5 am hour and 698 watt hours in the 6 am hour. But then back to nothing in the 7 am hour. Grid input (consumption) also went way up, from nothing overnight to 639 watt hours at 5 am and 691 watt hours at 6 am. But if you look at the net grid power, the total for the 2 hours is still just 160 watt hours, or 0.16 kilowatt hours, so the total power was really nothing.
The battery energy is really odd.
My system typically discharges between 700 and 1,200 watts through the night as things cycle on and off. So all the hours up to 4 am are in the range, discharge only, no charging. But then the 5 am hour has a discharge of 1.5 KWHs AND a charge of 0.448 KWHs. Net just over 1 KWH of discharge, which is about normal. And the same happened in the 6 am hour. 1.4 KWH of discharge, and 0.508 KWHs of charge.
I will do another Gateway reset and see if anything shows up in the event log.