robert1968

121A :)

Great news ! Looking at the status output, your Vmpp on PV2 seems to be only 10V above the original derate limit. That should be safe.

Thanks Kuba.cz
Just a quick feedback: my inverter still works perfectly with the removed derate firmware. :)


For just analysis purpose today i made 3 get status within 10 minutes in the mid of the day when PVs provides almost maximum (113A).
1st status is with Battery charge current was limited to 10A.
2nd Battery charge current was limited to 100A.
3rd when Battery charge current was limited to 150A.

10A
mppsolar --getstatus -P pi30max
Command: QPIGS2 - General Status Parameters inquiry 2
--------------------------------------------------------------------------------
Parameter Value Unit
ac_input_voltage 235.5 V {'icon': 'mdi:transmission-tower-export', 'device-class': 'voltage'}
ac_input_frequency 50.0 Hz {'icon': 'mdi:current-ac', 'device-class': 'frequency'}
ac_output_voltage 228.6 V {'icon': 'mdi:power-plug', 'device-class': 'voltage'}
ac_output_frequency 50.0 Hz {'icon': 'mdi:current-ac', 'device-class': 'frequency'}
ac_output_apparent_power 645 VA {'icon': 'mdi:power-plug', 'device-class': 'apparent_power'}
ac_output_active_power 525 W {'icon': 'mdi:power-plug', 'device-class': 'power', 'state_class': 'measurement'}
ac_output_load 6 % {'icon': 'mdi:brightness-percent'}
bus_voltage 465 V {'icon': 'mdi:details', 'device-class': 'voltage'}
battery_voltage 52.8 V {'icon': 'mdi:battery-outline', 'device-class': 'voltage'}
battery_charging_current 10 A {'icon': 'mdi:current-dc', 'device-class': 'current'}
battery_capacity 56 % {'device-class': 'battery'}
inverter_heat_sink_temperature 44 °C {'icon': 'mdi:details', 'device-class': 'temperature'}
pv1_input_current 0.8 A {'icon': 'mdi:solar-power', 'device-class': 'current'}
pv1_input_voltage 358.9 V {'icon': 'mdi:solar-power', 'device-class': 'voltage'}
battery_voltage_from_scc 0.0 V {'icon': 'mdi:battery-outline', 'device-class': 'voltage'}
battery_discharge_current 0 A {'icon': 'mdi:battery-negative', 'device-class': 'current'}
is_sbu_priority_version_added 0 bool
is_configuration_changed 0 bool
is_scc_firmware_updated 0 bool
is_load_on 1 bool
is_battery_voltage_to_steady_while_charging 0 bool
is_charging_on 1 bool
is_scc_charging_on 1 bool
is_ac_charging_on 0 bool
battery_voltage_offset_for_fans_on 0 10mV
eeprom_version 0
pv1_charging_power 306 W {'icon': 'mdi:solar-power', 'device-class': 'power', 'state_class': 'measurement'}
is_charging_to_float 0 bool
is_switched_on 1 bool
is_dustproof_installed 0 bool
solar_feed_to_grid Disabled
country Invalid key: 3030
solar_feed_to_grid_power 0 W {'icon': 'mdi:solar-power', 'device-class': 'power', 'state_class': 'measurement'}
pv2_input_current 2.1 A {'icon': 'mdi:solar-power', 'device-class': 'current'}
pv2_input_voltage 434.8 V {'icon': 'mdi:solar-power', 'device-class': 'voltage'}
pv2_charging_power 935 W {'icon': 'mdi:solar-power', 'device-class': 'power', 'state_class': 'measurement'}
--------------------------------------------------------------------------------

100A
mppsolar --getstatus -P pi30max
Command: QPIGS2 - General Status Parameters inquiry 2
--------------------------------------------------------------------------------
Parameter Value Unit
ac_input_voltage 236.9 V {'icon': 'mdi:transmission-tower-export', 'device-class': 'voltage'}
ac_input_frequency 49.9 Hz {'icon': 'mdi:current-ac', 'device-class': 'frequency'}
ac_output_voltage 229.9 V {'icon': 'mdi:power-plug', 'device-class': 'voltage'}
ac_output_frequency 50.0 Hz {'icon': 'mdi:current-ac', 'device-class': 'frequency'}
ac_output_apparent_power 666 VA {'icon': 'mdi:power-plug', 'device-class': 'apparent_power'}
ac_output_active_power 523 W {'icon': 'mdi:power-plug', 'device-class': 'power', 'state_class': 'measurement'}
ac_output_load 6 % {'icon': 'mdi:brightness-percent'}
bus_voltage 442 V {'icon': 'mdi:details', 'device-class': 'voltage'}
battery_voltage 53.6 V {'icon': 'mdi:battery-outline', 'device-class': 'voltage'}
battery_charging_current 100 A {'icon': 'mdi:current-dc', 'device-class': 'current'}
battery_capacity 64 % {'device-class': 'battery'}
inverter_heat_sink_temperature 57 °C {'icon': 'mdi:details', 'device-class': 'temperature'}
pv1_input_current 8.1 A {'icon': 'mdi:solar-power', 'device-class': 'current'}
pv1_input_voltage 323.9 V {'icon': 'mdi:solar-power', 'device-class': 'voltage'}
battery_voltage_from_scc 0.0 V {'icon': 'mdi:battery-outline', 'device-class': 'voltage'}
battery_discharge_current 0 A {'icon': 'mdi:battery-negative', 'device-class': 'current'}
is_sbu_priority_version_added 0 bool
is_configuration_changed 0 bool
is_scc_firmware_updated 0 bool
is_load_on 1 bool
is_battery_voltage_to_steady_while_charging 0 bool
is_charging_on 1 bool
is_scc_charging_on 1 bool
is_ac_charging_on 0 bool
battery_voltage_offset_for_fans_on 0 10mV
eeprom_version 0
pv1_charging_power 2648 W {'icon': 'mdi:solar-power', 'device-class': 'power', 'state_class': 'measurement'}
is_charging_to_float 0 bool
is_switched_on 1 bool
is_dustproof_installed 0 bool
solar_feed_to_grid Disabled
country Invalid key: 3030
solar_feed_to_grid_power 0 W {'icon': 'mdi:solar-power', 'device-class': 'power', 'state_class': 'measurement'}
pv2_input_current 8.2 A {'icon': 'mdi:solar-power', 'device-class': 'current'}
pv2_input_voltage 393.5 V {'icon': 'mdi:solar-power', 'device-class': 'voltage'}
pv2_charging_power 3255 W {'icon': 'mdi:solar-power', 'device-class': 'power', 'state_class': 'measurement'}
--------------------------------------------------------------------------------




150A
mppsolar --getstatus -P pi30max
Command: QPIGS2 - General Status Parameters inquiry 2
--------------------------------------------------------------------------------
Parameter Value Unit
ac_input_voltage 235.8 V {'icon': 'mdi:transmission-tower-export', 'device-class': 'voltage'}
ac_input_frequency 50.0 Hz {'icon': 'mdi:current-ac', 'device-class': 'frequency'}
ac_output_voltage 229.6 V {'icon': 'mdi:power-plug', 'device-class': 'voltage'}
ac_output_frequency 50.0 Hz {'icon': 'mdi:current-ac', 'device-class': 'frequency'}
ac_output_apparent_power 574 VA {'icon': 'mdi:power-plug', 'device-class': 'apparent_power'}
ac_output_active_power 266 W {'icon': 'mdi:power-plug', 'device-class': 'power', 'state_class': 'measurement'}
ac_output_load 5 % {'icon': 'mdi:brightness-percent'}
bus_voltage 422 V {'icon': 'mdi:details', 'device-class': 'voltage'}
battery_voltage 53.8 V {'icon': 'mdi:battery-outline', 'device-class': 'voltage'}
battery_charging_current 113 A {'icon': 'mdi:current-dc', 'device-class': 'current'}
battery_capacity 66 % {'device-class': 'battery'}
inverter_heat_sink_temperature 70 °C {'icon': 'mdi:details', 'device-class': 'temperature'}
pv1_input_current 9.2 A {'icon': 'mdi:solar-power', 'device-class': 'current'}
pv1_input_voltage 304.4 V {'icon': 'mdi:solar-power', 'device-class': 'voltage'}
battery_voltage_from_scc 0.0 V {'icon': 'mdi:battery-outline', 'device-class': 'voltage'}
battery_discharge_current 0 A {'icon': 'mdi:battery-negative', 'device-class': 'current'}
is_sbu_priority_version_added 0 bool
is_configuration_changed 0 bool
is_scc_firmware_updated 0 bool
is_load_on 1 bool
is_battery_voltage_to_steady_while_charging 0 bool
is_charging_on 1 bool
is_scc_charging_on 1 bool
is_ac_charging_on 0 bool
battery_voltage_offset_for_fans_on 0 10mV
eeprom_version 0
pv1_charging_power 2814 W {'icon': 'mdi:solar-power', 'device-class': 'power', 'state_class': 'measurement'}
is_charging_to_float 0 bool
is_switched_on 1 bool
is_dustproof_installed 0 bool
solar_feed_to_grid Disabled
country Invalid key: 3030
solar_feed_to_grid_power 0 W {'icon': 'mdi:solar-power', 'device-class': 'power', 'state_class': 'measurement'}
pv2_input_current 9.4 A {'icon': 'mdi:solar-power', 'device-class': 'current'}
pv2_input_voltage 370.4 V {'icon': 'mdi:solar-power', 'device-class': 'voltage'}
pv2_charging_power 3514 W {'icon': 'mdi:solar-power', 'device-class': 'power', 'state_class': 'measurement'}
--------------------------------------------------------------------------------


The bus voltage is highest in the lowest load of course.

I think it's the inverter_temperature and transformer_temperature which I called "inside" temperature in my previous post, because it's a sensor on the board, in some products not even close to any transformer.
inverter_heat_sink_temperatureonly takes the higher of the two values inverter_temperature and battery_temperature.
scc_pwm_temperature will limit PV current if it exceeds 80 deg.

Seems solved. Find another USB UART dongle (cp2102) and this seems working.
Upgrade running still.. :)

I'm glad it finally worked out. Warning 32 means no communitaction between display and DSP, it was probably stuck in the bootloader because of communication error.
Looking forward to long-term test results 🤞

I'm not sure what that means. But quickly looking into the 38.17 display firmware I could only find "BDR96" and ":28062" (possibly also some other) reflash commands there, not "C28066" which your DSP firmware uses. So unless I missed something, then the USB OTG method can't work in this case.
Oh, of course you're right. I forgot about the other string which is not shown there. The derating applies as soon as any of the strings exceeds 360V.

My understanding, without owning a Max model, is that this should work. This is based on me reading the firmware; as far as I know, "mks2.hex" is not mentioned in any Voltronic documentation. So this is pure theory. So far, I'm not aware of anyone saying "hey, this does not work". Please report your results, good or bad.

Neither I have a MAX model to test it. But the .inv file is actually IntelHex, so the .hex extension makes sense. The other files are generated by Arena Reflash Tool automatically. It's the same data in another format.
So, Robert1968, I think your steps are correct.

So thanks to Coulomb, I got the exact 78.08 firmware and changed the derating threshold from 360V to 450V, patched file attached.
Robert1968, you can test it, if you wish. Good luck!
Note for others who haven't read the topic: We don't know why this kind of derating is there and whether it is necessary. Using this firmware may lead to a catastrophic failure of the inverter. Use at your own risk!
MAXE11K_TWIN_DSP_78.08_derate_at_450V.zip

I don't have the 78.08 original file, I could only find 78.07 for Axpert Max E 11 kW Twin '28066. I can patch that one.
Is there any experience on using Axpert's firmware in EASun? Not sure if they are the same.

I second the above issue, I have a Tommatech 11kw non-twin (clone of Axpert Max with removable display) and whatever I do I cannot make my batteries charge above 100amps. I have 6x Dyness A48100 (approx 28.8 kwh) and a Braun battery (modified from 16s to 15s with JK BMS, approx 13.4 kwh) in parallel, both MultiSibControl with the Dyness batteries input and Solar Assistat with a Victron Shunt (for all Dynesss and Braun batteries) talking to the inverter. I have tried switching off one or the other in various combinations and sequence but the batteries do not charge above 100amps, though their BMS settings are for 150A. I have also tried changing in MultiSibControl the "PV power balance strategy" settings between "Charge only" and "Loads + Charge" which sends a PSB0 or PSB1 command to the inverter (and this changes the setting in Solar Assistant for "PV power Balance" between "Limit PV input to max charge current" and "Allow higher PV than max charge current" but no change, batteries still charge with max 100amps, even if I disconnect some of them and try using only MultiSibControl or Solar Assistant.
Actually for Robert1968 above, the max charge setting of 150A includes BOTH from PV and from Utility, however even if my Utility charges is set to 2A or 10A, the Batteries are charged with max 100A from Solar
@Coloumb will appreciate any insight you might provide on the above inverter behaviour/logic, I am using your 273.63 firmware.
Thank you in advance