How to configure PowMr HVM3.2H-24V-N

For example, PowMr HVM3.2H-24V-N inverter with LiFePO4 24V 105Ah battery.

First of all, I connected a 24V battery, ordered a ready-made assembly in China with 8 cells EVE 105, Grade A and a capacity of 105A, not 100A. I connected it with 16mm copper cables, on one side crimped under an 8mm bolt, the other side was connected to the inverter through the automatic switch TOMZN 2P DC MCB 600V 100A.
The input of the inverter was also connected via a 2P AC automatic switch 32A, which cannot be turned on without configuring the inverter!
For automatic switching from the city network to the inverter, I connected the CHYT LW2R-100II AVR, it is designed for the main power supply from solar panels, so I had to vice versa connect the power supply from the city network to the upper main contacts, and the inverter power supply at the bottom, this AVR also switches to the main network only when there is simultaneous power from both sources. Switching to the main network with a delay of 3 seconds, since there must be a network from solar panels.

When you long press the ENTER button, the parameter setting menu will open, you can use the UP/DOWN buttons to switch between parameters, select a parameter with the ENTER button.

I will give an example of the parameters that I indicated (in bold), in your case there may be completely different parameters.,

01: USb (by default, main power from the network), SUb (solar energy as the main power, if it is not enough, then at the same time power from the network as additional). SbU (solar energy as the main power, and battery power as additional).

02: 20A (total maximum charge current, that is, charge current from the network + charge current from the sun), possible options: 10, 20, 30, 40, 50, 60 (default), 70, 80.

03: UPS (input voltage range AC 170-280V), APL (default, 90-280V).

05: USE (battery type, custom, need to configure parameters 26,27 and 29), AGm (default), FLd (flooded).

06: LrE (enable, auto restart if there is an overload at the inverter output). disabled by default.

07: tfd (disable, off, auto restart if the inverter overheats). disabled by default.

09: 50 Hz (default output frequency), another 60 Hz available for selection.

10: 230 V (output voltage, default), 220 and 240 available.

11: 20A (maximum charge current from the network, if the value in parameter 2 is less, then the value of parameter 2 applies), available options: 2, 10, 20, 30 (default), 40, 50, 60.

12: 23 V (by default, the parameter is valid only if not USb is selected in the first parameter, switching to mains power if the voltage is lower than specified).

13: 27 V (by default, the parameter is valid only if not USb is selected in the first parameter, switching to battery power if the voltage is higher than specified).

16: SNU (by default, the charge source is powered simultaneously from the network + the sun). CUt (charge from the network, if there is no network then the sun), CSO (the main sun, if there is none, then from the network), OSO (charge only from the sun).

18: bON (alarms enabled, default)

19: ESP (automatic return to main screen, default), rEP (selected screen is displayed continuously).

20: LON (screen backlight, on by default, turns off if you don’t press anything), LOF (always off).

22: AOFF (sound signals are turned off when the mains power disappears or appears, enabled by default).

23: byd (bypass is disabled, by default, if enabled, when the battery power is overloaded, it will switch to line mode)

25: FEN (write fault code, enabled by default).

26: Bulk: 28.4 V (accelerated charging voltage, you need to look at the battery characteristics) (the maximum possible for my battery is 29.2)

27 Floating: 27.6 V (the characteristics of my battery indicate a floating voltage of 27.6)

29: 22.4 V (Low DC cut-off voltage, at this voltage the load from the inverter is turned off, you need to look at the value in the battery characteristics and set it a little higher so that the inverter turns off consumption before the bms turns off, in the characteristics of my battery it is 21.6, on the inverter it is better to indicate 2.8 per cell, 2.8V * 8pcs = 22.4V), possible values ​​are 20-24.

30: Ed5 (equalizing charge, default disabled, applicable for lead-acid batteries).

31: 29.2 V (default, equalizing charge voltage)

33: 60min (default, equalizing charge time, possible values ​​5-900 minutes)

34: 120min (default, equalizing charge pause, possible values ​​5-900 minutes)

35:30d (default, equalizing charge interval, possible values ​​0-90 days)

36: Ad5 (default disabled, manual start of equalizing charging).

I have also attached instructions

I will duplicate the parameters of the inverter that I configured:
Operating Temperature Range: -10 ~ 50 °C
Inverter Mode:
Rated Power: 3200VA/3000W
DC Input: 24VDC, 125A
AC Output: 230VAC, 50/60Hz, 13.9A, 1Ф
AC Charger Mode:
AC Input: 230VAC, 50/60Hz, 20.2A, 1Ф
DC Output: 27VDC
AC Output: 230VAC, 13.9A, 1Ф
Maximum AC Charging Current: 60A
Solar Charger Mode:
Rated Power: 3000W
Nominal operating voltage: 240VDC
Max. Solar Voltage (VOC): 400VDC
MPPT Voltage range: 30 ~ 400VDC
Maximum Solar Charging Current: 80A

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