xw6848 stuck charging off grid at low current

FGA
865-6848-21

Device name
XW6848-21

Build Number
1.11.01bn49

Stuck at 5.43 amps
Nothing I do with settings gets anywhere but 0 and 5.43 amps

Inverter Status
AC Pass Through
Charger Status
Bulk Charge
Modbus Slave Address (Port 502)
10
Device Present
Active (data valid)
Modbus Slave Address (Port 503)
10
Inverter Enabled Status
Enabled
Charger Enabled Status
Enabled
Sell Enabled Status
Disabled
Device State
Operating
Inverter Status
AC Pass Through
Charger Status
Bulk
Active Faults
No Faults
Active Warnings
No Warnings
Battery Association
House Battery Bank 1
DC Voltage
57.6 V
DC Current
5.4 A
DC Power
311 W
Battery Temperature
N/A
Charge Mode Status
Primary
AC1 Association (Grid)
Grid 1
AC1 Active Power
-331 W
AC1 Frequency
60 Hz
AC1 Voltage
247.9 V
AC1 L1 Voltage
124 V
AC1 L1 Current
-1.8 A
AC1 L2 Voltage
123.9 V
AC1 L2 Current
-1.8 A
AC1 Voltage Qualified
Qualification Good
AC1 Frequency Qualified
Qualification Good

Still having this issue, a year later.
Its like the XW has a mind of its own
The most I can push into battery bank is 35 amps.
Max Charge Rate 62%
Max Bulk 60 A
Max Abs 60 A
Max Float 2 A
Batt Cap 650 Ah
---
DC Current
35.5 A
DC Power
2048 W
Battery Temperature
73.40 °F
Charge Mode Status
Primary
AC1 Association (Grid)
Grid 1
AC1 Active Power
-2186 W
AC1 Frequency
60 Hz
AC1 Voltage
242.7 V
AC1 L1 Voltage
120.8 V
AC1 L1 Current
-8.8 A
AC1 L2 Voltage
121.8 V
AC1 L2 Current
-9.1 A
I do reboot
Standby then back to Operating
restarted Gateway too

At these limits I can't recharge a 28kw battery bank faster than 2 kw an hour. Up to 14 hours to complete task
Build Number 1.11.01bn49
Device name XW6848-21

AC1 breaker amps setting? (XW user setting, not physical breaker size)

You always have weird issues.
Feels self inflicted.

Can you post screenshots of all your settings? The text in posts #2 and 3 doesn't help me understand your settings.

If I remember correctly, you've got something sending Modbus commands? What is it sending and have you tried disabling it?

In your post from 2022, your XW is in absorb at 57.4 volts, you didn't post your battery voltage in the recent post. Chargers can only provide maximum current when battery voltage is below the absorb setting.

It turns out there is another section of settings ... Power Control Settings. In there there is EPC Maximum Charge Power is watts. That was at 2050 W. I've ignored that in past as I had the EPC Enable OFF. Button to left of setting. So even if OFF unit will limit to the Charge Setting there.
Thank all for the feedback.

Glad you got it figured out.

keepsake said:

It turns out there is another section of settings ... Power Control Settings. In there there is EPC Maximum Charge Power is watts. That was at 2050 W. I've ignored that in past as I had the EPC Enable OFF. Button to left of setting. So even if OFF unit will limit to the Charge Setting there.
Thank all for the feedback.

Click to expand...

I may be experiencing the same with one of my clients. I will be there tomorrow so will check. His charging rate is throttled back and I've been struggling to figure out why. Did you ever figure out what "EPC" is. And did you access these Power Control Settings through the InsightLocal interface? Thank you

I believe EPC is external power control. It's available on inside cloud, local, and via modbus.
I use it to actively control AC charge power to charge from my AC coupled solar.

400bird said:

I believe EPC is external power control. It's available on inside cloud, local, and via modbus.
I use it to actively control AC charge power to charge from my AC coupled solar.

Click to expand...

Thanks 400. Makes sense. This is an off grid DC coupled system so in theory one would think the EPC settings wouldn't come into play but I've seen indications from others that even though it is turned off, the setting may be limiting the charge output from the XW Pro charger.

If it is off grid, what's the AC charging source that any XW setting would effect?

400bird said:

If it is off grid, what's the AC charging source that any XW setting would effect?

Click to expand...

The generator. Client has a 14kW gen but we are only realizing 4kW when charging. 20kW lithium bank is capable of receiving a full 140 amp charge from the XW Pro but we aren't getting it so searching for any system setting that is preventing the full charge. The gen is connected to AC2. The site is remote and the battery bank is currently at LBCO so cannot see on the cloud, but travelling to the site later today to attempt to find whatever is holding down the current so will be checking this setting, even though I think it is not supposed to affect the level from the gen, especially if EPC is turned off. But all other settings appear to be ok so looking for something elusive.

With the generator connected to AC2, I don't know if EPC is related. In an email conversation with Schneider, they told me EPC wasn't under development and would it answer any questions.

4kW seems like the breaker setting. 4kW is about 16 amps at 240 (20 amps x 80% breaker derated is 16 amps)

Open all the settings and print everything to grab all the settings. There's a few members here that are good at spotting bad setting.

Is this a new issue or has it never charged correctly?

400bird said:

With the generator connected to AC2, I don't know if EPC is related. In an email conversation with Schneider, they told me EPC wasn't under development and would it answer any questions.

4kW seems like the breaker setting. 4kW is about 16 amps at 240 (20 amps x 80% breaker derated is 16 amps)

Open all the settings and print everything to grab all the settings. There's a few members here that are good at spotting bad setting.

Is this a new issue or has it never charged correctly?

Click to expand...

Looks like the EPC is not something to consider. Visited the site today and got everything up and running but could only hold the generator input if we reduced the charge rate to 25%. Much higher than that and the generator sounded like it was loading down, and we had several generator faults "output frequency too low". Upon checking I could see the freq down to 57 and the voltage down to 116 or so. This is from a 14kW generator. 30% would be about 3.5kw only so one would not expect the gen to be loaded down. At the XW Pro, we could see the current ramping up to 60 amps or so and then trip out, restart on its own and go through the cycle again. Not sure why the XW tripping out but guessing that it did not like the quality of the AC input from the generator. Have left the system fully operational in automatic charging but at the reduced rate of 25%. Not sure what we are looking at here but starting to question the generator. It is running on propane, wondering if the fuel flow cannot keep up with the demand at the higher outputs. This could explain the bogging down of the generator at only 25% of its capacity. So will have to explore this possibility. If any one has any pearls of wisdom would love to hear them. Thanks

harrc said:

It is running on propane, wondering if the fuel flow cannot keep up with the demand at the higher outputs. This could explain the bogging down of the generator at only 25% of its capacity. So will have to explore this possibility. If any one has any pearls of wisdom would love to hear them. Thanks

Click to expand...

Be curious to know what you figured out in the end.

In my case, I could hear my generator slowing down and speeding up, and eventually figured out it was fuel starved, since the diesel had begun to gel in the near-0ºF temperatures! I could see the fuel in the bowl running out as it slowed down. Then, when the Sunny Island disconnected, it could fill back up again and get back up to speed, only to repeat the process when SI reconnected and started to draw a load. I couldn't do anything but reduce the charge rate, but as in your case, it helped.