Monitor System Setting Introduction For Hybrid Inverter

1. Common Setting

Time ?: Local time of the inverter. Input format: yyyy-MM-dd HH:mm:ss.

Modbus Addr: Communication COM address in the 485 communication system. If multiple inverters are installed and communicate via an 485 bus, they require different addresses. The range is from 0 to 150.

PV Input Mode: The connection method for the solar module.

When changing settings in the "Model" set group, the inverter must first be set to "Standby", then press "set battery" to change the model.

Battery Type, Lead-acid Capacity, Lithium Brand: Select the battery type and then the battery brand for Lithium batteries or battery capacity for lead-acid batteries. Note that after setting the battery type, all other settings will revert to default.

Neutral Detect Enable: Detects if the customer has connected the neutral line in the AC terminal.

Measurement, Meter Type, CT Sample Ratio: Choose the correct measurement, meter type, or CT sample ratio according to the external measuring device installed. The default measurement is CT with a sample ratio of 1000/1. This can be changed if a meter is installed.

Restart Inverter: Remotely restart the inverter.

Screenshot Description (Common Setting): The interface shows input fields for Time, Modbus Addr, PV Input Mode, Model, Meter Type, Measurement, Lead-acid Capacity, Battery Type, Lithium Brand, Neutral Detect Enable, Restart Inverter, and CT Sample Ratio, with corresponding 'Set' buttons or dropdowns.

2. Application Setting

Grid Frequency (Hz) ?: If the grid frequency is nominal 50Hz, the EPS Frequency will adjust automatically to 50Hz. If there is no grid power and the reading is 50Hz, but connected devices operate at 60Hz, you can manually set it to 60Hz. This setting is based on the rated frequency of the local grid regulation and devices.

Power Backup: If Power Backup function is enabled, the EPS/UPS terminal will maintain output when AC power is interrupted. This can be set via the web interface as "Power backup" or via the LCD as "Off-grid output". Enabling this mode ensures uninterrupted EPS output.

Seamless EPS Switch: When power is interrupted, the inverter switches to EPS mode seamlessly. However, if grid voltage fluctuation is an issue, disabling this feature is recommended to avoid misjudgment.

Micro-Grid: If the inverter is connected to an AC generator via the AC terminals, set Micro-Grid to Enable. In this scenario, the system will not feed power into the generator, and the inverter will use generator power to charge the battery. The frequency range will also be adjusted to be compatible with the generator.

PV Grid Off: If the user requires an off-grid function without installing a battery, enable PV Grid Off. Note that in this mode, off-grid energy is supplied solely by solar power, which may not be stable. It is recommended to install a battery to ensure stable EPS/UPS output voltage for off-grid functionality. This allows access to off-grid mode when only solar input is available.

Grid sell back: In some countries, feeding energy back into the grid is not permitted, or the user may not wish to do so. In such cases, the Grid sell back function can be disabled.

Grid Sell back Power (kW): If Grid sell back is enabled, this setting allows you to define the power limitation for feeding into the grid.

Fast Zero Export: By default, the inverter adjusts its output power every 5 seconds to prevent export. Enabling "Fast Zero Export" allows the inverter to adjust output power more rapidly.

Normal/Standby: "Standby" mode halts feed-in, charging, and discharging, putting the system in a standby state. "Normal" mode sets the system to auto-run status.

Max. AC Input Power: Allows the inverter to adjust charge power based on detected EPS load consumption and the maximum AC input power limitation.

Paralleling Setting Group:

• Set Subordinates or Primary: LXP inverters support paralleling. Connect the EPS terminals together. One inverter must be set as primary, and others as slave. For a single-phase system with multiple inverters, set one as "1Phase Primary". For a three-phase system, set one as "3 Phase Primary". All inverters default to Subordinates.
• Set Composed Phase: When composing a three-phase system with three or more inverters, connect the AC terminals to the three-phase grid.

If utility power is present, the inverter detects and records the connected phase. On subsequent startups, it will use the detected phase. If the user's setting differs from the detected phase, the detected phase will be used. The output phase record can be cleared by the user. If utility power is absent, the system uses the user-configured phase settings for three-phase output. Incorrect phase configuration (e.g., 2 R phases and no T phase) will result in an error report.

Battery Shared: For paralleling systems where all inverters share the same battery, enable "battery shared". The master inverter will then broadcast battery information to other inverters.

Screenshot Description (Application Setting): Displays fields for Grid Frequency, Power Backup, Seamless EPS Switch, Micro-Grid, Grid Sell Back, PV Grid Off, Fast Zero Export, Grid Sell Back Power, Max. AC Input Power, Parallel System (System Type, Composed Phase), and Share Battery.

3. Grid Connect Setting

Grid Regulation: Select the appropriate grid safety regulation for operation.

Grid Type: Select the correct grid type, such as split phase (e.g., 240/120, 220/110, 200/120) or single phase (e.g., 220, 230, 240).

Connect Time: The waiting time before connecting to the grid, once solar input is ready and the utility is within range during power-on.

Reconnect Time: The time the inverter waits after an abnormal situation before attempting to reconnect to the grid, provided the utility is within range.

Grid Connect Condition Setting Group: The inverter connects to the grid if voltage and frequency are within the following ranges:

• Grid Volt Connect High(V)
• Grid Volt Connect Low(V)
• Grid Freq Connect High(Hz)
• Grid Freq Connect Low(Hz)

Active Power Percent (%): Sets the maximum AC output power as a percentage of the inverter's capacity.

Grid Soft Start: If enabled, the inverter gradually increases AC power output. Graph Description (Grid Soft Start): This graph illustrates the power-up gradient. It shows Power (P) on the Y-axis and Time (t) on the X-axis. Curves depict maximum and minimum gradients (e.g., 20%*Pnom/min). Key points like Pmin, Pmax, Pnom, and time intervals (T1, T2) are indicated.

OVF Load Derate Enable: If the frequency exceeds 50.2/60.2Hz, the inverter will derate its output power according to the specified curve. Graph Description (OVF Load Derate Enable): This graph plots Power/Pnom (%) against Frequency (f). It shows derating curves (Sequenza A, Sequenza B) that reduce output power as frequency increases above a threshold. Specific frequency points and corresponding power percentages are marked.

Screenshot Description (Grid Connect Setting): Displays fields for Connect Time, Reconnect Time, Grid Volt Connect High/Low, and Grid Freq Connect High/Low.

4. Advanced Setting

Reactive Power CMD Type: Defines how the inverter controls reactive power.

• 0 - Unit power factor: Inverter outputs only active power (PF=1).
• 1 - Fixed power factor: Inverter outputs power with a fixed PF.
• 2 - Default cosφ(P): PF is determined by the output active power. Graph Description (Characteristic curve cos φ(P)): This graph shows the relationship between cos φ and P/Pmax. It illustrates regions for "under-excited" and "over-excited" power factors.
• 4 - UnerReactivePower: Inverter outputs under-excited reactive power.
• 5 - OverReactivePower: Inverter outputs over-excited reactive power.
• 6 - Q(V): Inverter outputs reactive power based on AC voltage.

Reactive Power Percent CMD(%): Used in conjunction with Reactive Power CMD Type. If 4 (UnerReactivePower) or 5 (OverReactivePower) is selected, this setting defines the output reactive power percentage. Graph Description (Figura a): This graph plots Reactive Power (Q) against Voltage (V) or Current (C). It shows different voltage thresholds (V1s, V2s, V1, V2) and corresponding reactive power limits (Qmin, Qmax), illustrating voltage-dependent reactive power control.

Grid Protection Setting Group: The inverter disconnects from the grid if AC voltage or frequency falls below the low limit or exceeds the high limit. Ensure Grid Volt/Freq Limit3 Low(V) ≤ Grid Volt/Freq Limit2 Low(V) ≤ Grid Volt/Freq Limit1 Low(V), and Grid Volt/Freq Limit3 High(V) ≥ Grid Volt/Freq Limit2 High(V) ≥ Grid Volt/Freq Limit1 High(V).

• Grid Volt Limit1 Low(V)
• Grid Volt Limit2 Low(V)
• Grid Volt Limit3 Low(V)
• Grid Volt Limit1 High(V)
• Grid Volt Limit2 High(V)
• Grid Volt Limit3 High(V)
• Grid Freq Limit1 Low(Hz)
• Grid Freq Limit2 Low(Hz)
• Grid Freq Limit3 Low(Hz)
• Grid Freq Limit1 High(Hz)
• Grid Freq Limit2 High(Hz)
• Grid Freq Limit3 High(Hz)

Grid Volt Mov Avg High(V): If the average AC voltage over 10 minutes exceeds the set value, the inverter will disconnect from the grid.

Grid on Power SS Enable, Power Soft Start Slope (%/min): Controls the inverter's output power ramp-up speed when connecting to the grid. If you need to adjust the power soft start slope, ensure "Grid on Power SS" is enabled.

Screenshot Description (Advanced Setting): Shows fields for PV Arc, PV Arc Fault Clear, CT Direction Reversed, Smart Load, RSD, AC Couple, Battery Capacity (Ah), and CT Power Offset (W).

5. Generator Setting

Batt Charge current limitation(A): Sets the maximum battery charge current limit when using the generator.

Gen Rated Power (kW): Sets the generator input power limitation, allowing you to limit the battery charge power based on detected EPS load consumption and the generator's input power limit.

Charge start volt(V)/ SOC (%): When using the generator's auto-start function, this limits the charge start voltage or State of Charge (SOC) to automatically start the generator.

Charge end volt(V) / SOC (%): When using the generator's auto-start function, this limits the charge end voltage or SOC to automatically stop the generator.

Screenshot Description (Generator Setting): Displays fields for Batt Charge Current Limit, Gen Rated Power, Charge Start Volt/SOC, and Charge End Volt/SOC.

6. Charge Setting

Charge Last: PV power will not be used to charge the battery until the export power to the grid reaches its limitation (PV to Load > PV to grid > PV to battery).

Charge current limit (A): Sets the maximum charge current limitation for the entire system.

Battery Charge Control: If the inverter works with a compatible Lithium battery and communication is established, select charge control by "SOC". If using a lead-acid battery or a Lithium battery without communication, select charge control by "VOLT".

AC Charge Enable: To charge the battery using AC power, enable "AC Charge Enable", set the maximum charging power from AC, the SOC limit, and the desired time period(s) for AC charging. If the battery SOC is below the limit during these periods, AC charging will commence.

• AC Charge Enable
• AC Charge Power (kW): Maximum charge power from the grid.
• Stop AC Charge SOC(%)/ Volt(V): The inverter stops AC charging if the battery SOC or Voltage exceeds this limit.
• AC Charge Start Time 1, 2, 3
• AC Charge End Time 1, 2, 3

Continuous time settings (e.g., 19:00 to 08:00) can be configured using a single time slot.

Charge First(PV) Setting Group: For LXP hybrid inverters, in default mode, PV power first covers home loads. Excess PV power then charges the battery. Any remaining PV power is fed into the grid. To prioritize battery charging, enable "Charge First" function. "Charge First Power CMD" sets the maximum power percentage for battery charging in this mode. If the current time is within the user-set period and the battery SOC is below the limit, solar power will be used to charge the battery first.

• Charge Priority (Enable this mode: solar power charges the battery first, then powers the family load; surplus is fed into the grid).
• Charge First Power(kW): Maximum charge power from PV.
• Stop Charge first SOC(%)/ Volt(V): The inverter stops the "Charge First" function if the SOC or Voltage exceeds this limit.
• Charge First Start Time 1, 2, 3
• Charge First End Time 1, 2, 3

Lead-Acid Battery Setting Group:

• Absorb Voltage (V): The maximum charge voltage limit.
• Floating Voltage (V): The float charge voltage for Lead-Acid Batteries, which should be lower than or equal to the Absorb voltage.
• Charge Temperature Low Limit: If the temperature is below this limit, the inverter stops charging the battery (available for AS 4777 grid regulation).
• Charge Temperature High Limit: If the temperature is above this limit, the inverter stops charging the battery (available for AS 4777 grid regulation).

Screenshot Description (Charge Setting): Displays fields for Charge Last, Charge Current Limit, Battery Charge Control, AC Charge settings (Enable, Power, Stop SOC/Volt, Start/End Times), Charge Priority settings (Enable, Power, Stop SOC/Volt, Start/End Times), and Lead-acid Battery settings (Absorb Voltage, Float Voltage, Temperature Limits).

7. Discharge Setting

System Discharge Rate(%): Sets the maximum discharge power percentage. For a nominal discharge power of 12000W, setting this to 50% limits the maximum discharge power to 6000W.

On-grid Discharge Cut-off SOC (%)/ Volt(V): When connected to the grid, if the battery is discharging to supply the load, discharge will stop when the SOC or voltage falls below this limit.

Off-grid Discharge Cut-off SOC(%)/ Volt(V): In off-grid mode, if the battery is discharging to supply the load, discharge will stop when the SOC or voltage falls below this limit.

Batt Discharge Control: If the inverter works with a compatible Lithium battery, select charge control by "SOC". For lead-acid batteries or Lithium batteries without communication, select charge control by "VOLT".

Discharge current limitation (A): Sets the maximum discharge current limit when the grid is active.

Forced Discharge Setting Group: Allows the customer to enable forced discharge and set the discharge power and time period.

• Forced Discharge Enable
• Forced Discharge Power (kW): The forced discharge power limit.
• Stop Discharge SOC(%)/ Volt(V): The inverter stops forced discharging if the Battery SOC is lower than this limit.
• Forced Discharge Start Time 1, 2, 3
• Forced Discharge End Time 1, 2, 3

Peak-Shaving Setting group: Used to set the maximum power the inverter can draw from the grid. Further information can be found via video or guidance for this function.

• Peak-shaving enable
• Peak-shaving power (kW)
• Start Peak-shaving SOC1(%) / Volt 1(V)
• Start Peak-shaving SOC2(%) / Volt 2(V)
• Start Peak-shaving time1
• Stop Peak-shaving time1
• Start Peak-shaving time2
• Stop Peak-shaving time2

AC couple Setting group: The inverter supports AC coupling with existing grid-interactive solar systems connected to the inverter's GEN port. Refer to related guidance for more information.

• AC couple Start SOC(%) / Volt (V)
• AC couple Stop SOC(%) / Volt (V)

Smart Load Setting group: When Smart Load function is enabled, the GEN port is repurposed for Smart Load, and the inverter provides power to this load based on setup values.

• Start PV Power(kW): Minimum PV power limit to activate smart load output.
• On Grid always on: If enabled, the smart load operates whenever grid power is available.
• Smart Load Start SOC(%) / Volt (V): The high limit for battery to turn on the smart load.
• Smart Load Stop SOC(%) / Volt (V): The low limit for battery to turn off the smart load.

Lead acid Battery Setting group:

• Discharge Temperature Low Limit: If the temperature is below this limit, the inverter stops discharging the battery.
• Discharge Temperature High Limit: If the temperature is above this limit, the inverter stops discharging the battery.
• On-grid Discharge Derate Vbat: For lead-acid battery mode, discharge power begins to derate when reaching the "On-grid Discharge Derate Vbat" level. Discharge power becomes 0 at a cut-off voltage of -1V. Leaving "On-grid Discharge Derate Vbat" equal to "Discharge cut-off voltage" disables this function automatically.

Screenshot Description (Discharge Setting): Displays fields for System Discharge Rate, On-Grid/Off-Grid Cut-off SOC/Volt, Batt Discharge Control, Discharge Current Limit, Forced Discharge settings, Peak-Shaving settings, AC Couple settings, Smart Load settings, and Lead-acid Battery settings.

8. Reset Setting

All to Default: All parameters will be reset to their factory default settings.