Share this article:

Share via Email

Solis Cloud Remote Control Settings 

Desktop Version

Introduction

The SolisCloud platform offers powerful tools for remote monitoring and control of your solar inverter system. One of the most valuable features is Inverter Control, which gives users the ability to configure and fine-tune their inverter settings directly from the web interface. Whether you're managing grid interaction, battery behavior, or advanced compliance settings, this feature puts comprehensive control at your fingertips.

This article provides a step-by-step guide on how to access the Remote Control Settings in SolisCloud (desktop version), followed by a detailed overview of the different configuration menus available for hybrid inverters. While the layout and exact naming of menu items may vary slightly depending on your inverter model and firmware version, this guide serves as a useful reference for most setups.

Note: Please be aware that there is a distinction between the inverter remote control interface for Installers (organisations) and Owners. Owners will not have access to all parameters described in this article. This restriction is in place for security and system integrity reasons.

The interface shown below reflects the installer account view.

Installers are strongly advised not to change any parameters unless they fully understand their function and impact. Incorrect configuration may lead to inverter malfunction or reduced performance.

In particular, grid-related parameters must only be modified when specifically instructed by the relevant grid operator.

If you are unsure about any setting or function, please contact your local Solis support team for guidance before making any changes.

Table of Contents

1: How to Access Remote Control Settings in SolisCloud

2: Overview of Key Remote Settings

 2.1 On/Off

 2.2 Work Mode Options

  2.2.1 Self Use Mode

  2.2.2 Feed In Priority Mode

  2.2.3 Off Grid Mode

  2.2.4 Peak-Shaving Mode

 2.3 Time Setting

 2.4 Grid Feed In Power Limit

 2.5 Battery Settings

 2.6 Grid Code Settings 

  2.6.1 Grid Code Parameters

  2.6.2 CERT Mode Settings

  2.6.3 Power Limit

  2.6.4 Frequency Derating

  2.6.5 Special Settings

  2.6.6 Initial Settings

  2.6.7 DRM Settings

 2.7 Smart Port Settings

  2.7.1 Backup Settings

  2.7.2 AC Coupling

  2.7.3 GEN Settings

 2.8 Advanced Settings

  2.8.1 Meter Settings

  2.8.2 Inverter Output Power Settings

  2.8.3 Power Factor Settings

  2.8.4 MPPT Multi-peak Scanning

  2.8.5 Daily PV-ISO Detection

  2.8.6 Paid Leasing Function

  2.8.7 Other Settings

  2.8.8 Calibration Settings

  2.8.9 Special Function Settings 1

  2.8.10 Special Function Settings 2

  2.8.11 Special Function Settings 3

  2.8.12 EPS Mode (Italy Only)

  2.8.13 Passive Mode

 2.9 Parallel Settings

    2.10 Modify Serial number

1. How to Access Remote Control Settings in SolisCloud

To start managing your inverter remotely, follow these steps:

1: Login to SolisCloud using your credentials.

2: Navigate to your plant dashboard and click on the plant you want to access. 

3: On the plant Overview page, click on “Device” in the left-hand menu. 

4: Click on the serial number of the inverter you want to control.

5: On the inverter detail page, click the “Inverter Control” button. 

6: Read and agree to the disclaimer. If you do not agree, you will not be able to access Inverter Control. 

7: For security reasons, enter your SolisCloud password again and click “OK”.

2. Overview of Key Remote Settings

An overview of all the settings available on Hybrid Systems. 

2.1.

On/Off 

On/Off: Enables or disables the inverter's energy conversion and output.

2.2.1.

Work Mode – Self Use 

Self Use Mode prioritizes using solar energy to power household loads first. Any excess energy charges the battery, and only after the battery is full will remaining energy be exported to the grid. This mode maximizes self-consumption and minimizes reliance on the grid.

Self-Use Mode Switch: 

Enables or disables the self-use operation mode. Note that Self-Use cannot be active simultaneously with other modes like Feed-in Priority, Peak-Shaving, or Off-Grid — activating any of these will automatically disable Self-Use.

Time of Use Switch: 

Allows enabling a customized schedule for battery charging and discharging, letting users optimize energy usage based on time-of-day tariffs or preferences.

Charge and Discharge Times: 

Defines specific periods when the battery should charge or discharge, effective only when the Time of Use switch is enabled.

Allow Grid Charging: 

Controls whether the system can charge the battery from the grid to maintain a reserve state of charge (SOC), ensuring backup power availability during outages. Enabling this ensures battery charging from the grid when necessary, but does not force continuous grid charging.

Battery Reserve Switch:

When enabled, the system reserves a portion of the battery SOC for emergency backup, only used if the grid fails.

Reserved SOC: 

Sets the percentage of battery capacity to reserve as backup, adjustable between 10% and 100%, effective only when the Battery Reserve Switch is on.

Grid Charging Power Limit: 

Defines the maximum power that can be drawn from the grid to maintain the reserved SOC, adjustable from 300W to 10,000W, effective only when the Battery Reserve Switch is enabled.

2.2.2.

Work Mode – Feed In Priority  

The Feed-in Priority mode in Solis inverters allows users to prioritize exporting surplus solar energy to the grid while managing battery charging and discharging according to their preferences. Through SolisCloud, customers can customize key settings to control how the system interacts with the grid and manages battery reserves, optimizing energy flow for their specific needs.

2.2.3.

Work Mode – Off Grid  

The Off Grid mode allows Solis inverters to operate independently from the utility grid, providing power solely from the solar system and battery storage. This mode is ideal for locations without grid access or during intentional grid disconnection. Through SolisCloud, users can configure key parameters to ensure safe and efficient off-grid operation while protecting the battery.

Off-grid Mode Switch: 

Enables or disables the Off Grid mode. Note that this mode cannot be enabled if the battery’s state of charge (SOC) is below 30%, protecting the battery from deep discharge.

Off-Grid Overdischarge SOC: 

Sets the minimum allowable SOC level during off-grid operation, adjustable between 10% and 100%. This parameter helps prevent excessive battery discharge and extends battery life while off-grid.

2.2.4.

Work Mode – Peak-Shaving Mode  

Peak Shaving Mode helps reduce electricity costs by using the battery to supply power during times of high energy demand (peak periods). Instead of drawing expensive electricity from the grid, the system discharges the battery to “shave” the peak. This lowers demand charges and smooths energy consumption.

Peak-Shaving Switch: 

Enables or disables Peak-Shaving mode. This mode is supported only with lithium batteries that have communication functionality.

Max Usable Grid Power: 

Sets the maximum allowable power that can be imported from the grid during peak-shaving, adjustable between 0 and 10,000 W. This limit helps control peak demand at the grid connection point.

Baseline SOC: 

Defines the battery state of charge (SOC) level that must be maintained when the maximum grid import power limit is not reached, adjustable from 10% to 100. When the battery's state of charge (SOC) falls below the baseline level, and the meter power has not yet reached the “Maximum usable grid power”, the system will use the available difference to charge the battery until it reaches the baseline SOC.

Allow Grid Charging: 

Enables or disables the system’s ability to charge the battery using grid power, providing flexibility in managing battery levels.

2.3.

Time Setting 

Configure inverter real-time clock (RTC). Essential for scheduling and load control operations.

2.4.

Grid Feed In Power Limit 

The Grid Feed-in Power Limit settings allow users to control and limit the amount of power and current their Solis inverter exports to the grid. These parameters are essential for complying with local grid regulations, managing energy distribution, and protecting both the inverter and the grid infrastructure. Through SolisCloud, customers can easily enable, disable, and fine-tune these limits to match their specific requirements.

Feed-in Power Limit Switch: 

Enables or disables the overall power export limitation function.

Unbalance Output: 

The switch enables or disables the unbalanced output functionality for split-phase or three-phase inverters. Please note that this mode cannot be activated unless the neutral (N) line is properly connected.

Feed-in Power Limit Value: 

Sets the maximum power output allowed for grid feed-in, ranging from 0 to 12,000 Watts.

Feed-in Current Limit Switch: 

Activates current-based export limitation instead of power-based limits, offering an alternative method to control export based on current.

Feed-in Current Limit Value: 

Defines the maximum allowable current for grid export, adjustable from 0 to 52 Amperes.

FailSafe Switch:

When enabled, ensures the inverter reverts to a safe default state in case of communication or control failure.

2.5.

Battery Settings

The Battery Settings menu provides essential configuration options to manage battery performance and protect system longevity. Users can set the battery model, adjust charging and discharging current limits, and define State of Charge (SOC) thresholds for overdischarge protection and forced recharging. These settings ensure the battery operates efficiently, safely, and in line with system requirements.

Page 1: 

Overdischarge Hysteresis SOC: 

Prevents frequent toggling of backup output in off-grid mode when near low SOC threshold.

Battery Healing Switch / SOC:

During extended periods of weak PV conditions, the battery may remain at a low state of charge (SOC), which can affect long-term performance. To maintain battery health, enable the Battery Healing Switch and set a target Battery Healing SOC. When the battery reaches the defined Forcecharge SOC, the inverter will use all available PV energy to charge the battery up to the healing SOC. During this process, the load will be powered by the grid.

Page 2: 

Peak Shaving Setting/ Max Grid Power when Force Charge:

Defines the peak shaving behavior when the battery enters force charge mode. This setting dynamically limits the charging power drawn from the grid to avoid exceeding the specified maximum grid power.

ECO Function:

Helps reduce unnecessary battery self-discharge by disconnecting the battery circuit at night when the battery SOC reaches the overdischarge threshold.

Battery Wake-Up / Voltage Setting / Time Setting

Allows manual activation of the battery by setting a specific voltage and time.

Auto Battery Wake-Up / Voltage Setting / Time Setting

Automatically wakes the battery each morning when the inverter starts, based on the configured voltage and time.

2.6.1.

Grid Code Settings – Grid Code Parameters

The Grid Code Parameters define critical settings that govern how the Solis inverter interacts with the electrical grid, ensuring compliance with local grid regulations and standards. These parameters control voltage and frequency thresholds, timing intervals, and response behaviors that protect both the grid and the inverter. Accessed via SolisCloud, these settings are typically preset according to the relevant grid standards and generally should not be modified unless under expert guidance or specific grid operator requirements.

Grid Standard Precision:

Determines the measurement accuracy for grid voltage, frequency, and timing evaluations. Users can select between:

• High Precision: Voltage ±0.1 V, Time ±0.01 s, Frequency ±0.01 Hz
• Standard Precision: Voltage ±1 V, Time ±0.1 s, Frequency ±0.1 Hz
   This setting should be chosen based on local grid compliance requirements or the desired measurement accuracy.

Grid Code: 

Specifies the grid code or standard that the inverter complies with. This setting aligns the inverter’s protection and operational thresholds with regional grid regulations.

2.6.2

Grid Code Settings - CERT Mode Settings

CERT Mode Settings enable fine-tuned control over the inverter’s grid support functionalities, ensuring stable and compliant operation under various grid conditions. These settings are configurable through SolisCloud and allow customization of the inverter’s response to voltage and reactive power variations, power factor adjustments, and anti-islanding protection methods. Proper configuration of these parameters is essential to meet local grid codes and optimize inverter performance.

No Response Mode: 

When set to OFF, the inverter actively participates in grid support functions as defined by the selected grid code work mode.

Grid Code Work Mode: 

Defines the inverter’s operational mode for voltage and reactive power management. Options include:

• 01: Volt-Watt – Adjusts active power output based on voltage levels.
• 02: Volt-Var – Controls reactive power in response to voltage changes.
• 03: Fixed Power Factor – Maintains a constant power factor regardless of grid conditions.
• 04: Fixed Reactive Power – Delivers a constant amount of reactive power.
• 05: Active Power–Power Factor – Manages active power in coordination with power factor.
• 0C: Active Power–Reactive Power (USA only) – Customized mode for U.S. grid requirements.

 V1Set (Volts): 

Sets the voltage threshold reference for the selected grid code mode to define when the inverter should adjust its output.

 Power Factor Setting Value:

Allows setting the desired power factor within the range of -1 to -0.8 (leading) and 0.8 to 1 (lagging), enabling control over reactive power flow.

Anti-Islanding Setting:

Configures the inverter’s protection against unintentional islanding, with options including Default Anti-Islanding, ROCOF (Rate of Change of Frequency) Anti-Islanding, both combined, or disabling anti-islanding protection.

2.6.3.

Grid Code Settings - Power Limit 

The Power Limit settings allow users to control the rate at which the inverter’s power output changes during startup, reconnection, and fault recovery events. These parameters help ensure smooth power transitions, protect the grid, and maintain compliance with regional grid codes. Through SolisCloud, customers can adjust these limits to optimize system performance and meet local regulatory requirements.

Power Control Slope (%/min): 

Defines the speed at which the inverter adjusts its power output when a change in power control percentage is commanded. A lower value results in a faster response, with a setting of zero allowing maximum adjustment speed.

Gradient Limit for Power Change (%): 

Sets the ramp rate limit when changing the maximum output power, controlling how quickly the inverter can increase or decrease its power.

Ramp-up-US (%/s): 

Specifies the initial ramp-up power slope limit for inverters operating under US grid codes, controlling the speed of power increase during startup.

Reconnect-US (%): 

Sets the power slope limit during reconnection for US grid codes, managing how quickly power output is restored after a grid disturbance.

EN50549 Gradient Limit for Power-on Change (%): 

Defines the initial ramp-up power slope limit for inverters following EN50549 grid standards, applicable during power-on events.

EN50549 Power Change Gradient after Fault Trip Restart (%):

Specifies the reconnection power slope limit after a fault trip restart in compliance with EN50549, regulating how smoothly the inverter returns to normal operation.

By carefully configuring these parameters, users can ensure their Solis inverter operates safely and efficiently while adhering to the requirements of different regional grid standards.

2.6.4.

Grid Code Settings - Frequency Derating

The Frequency Derating settings define how the inverter adjusts its power output in response to grid frequency changes—an essential part of complying with regional grid standards. These parameters are tied to the power–frequency response required by specific grid codes and should only be adjusted when explicitly instructed by the local grid operator.

Review the information below first to identify the corresponding parameters.
Important: Do not make any changes unless specifically requested by the grid operator.

Power–Frequency Response
 Each grid standard has its own requirements and may use different parameter functions.

2.6.5.

Grid Code Settings - Special Settings

The Special Settings section under Grid Code Settings provides advanced configuration options related to grid compliance and reactive/active power behavior. These parameters are typically aligned with regional grid standards and should only be modified if approved by the local network operator, as incorrect settings may result in non-compliance or inverter malfunction.

10min Overvoltage Setting (V):
 Defines the overvoltage threshold averaged over a 10-minute period. This is a grid-code-specific requirement and should not be altered without utility authorization.

3Tau(Q) Setting (s):
 Time constant used to define how quickly the inverter responds to voltage changes with reactive power (Volt-Var function).

3Tau(P) Setting (s):
 Time constant for the inverter’s response to voltage changes using active power adjustments (Volt-Watt function).

OverVolt Auto PLmt (Enable/Disable):
Automatically limits inverter output power in response to overvoltage conditions. This feature is specific to certain grid codes, such as PN50549 (Poland) and Italy, and is disabled by default.

2.6.6.

Grid Code Settings - Initial Settings

Resets working mode, power limit, and other initial conditions.

2.6.7.

Grid Code Settings - DRM Settings

DRM Switch: Enables control via Demand Response Mode signals. 

Bottom two settings are only applicable for Australia DRM logic.

2.7.1.

Smart Port – Backup Settings

The Smart Port - Backup Settings provide control over the inverter’s backup power output, enabling reliable operation during grid outages or off-grid conditions. Through SolisCloud, users can configure parameters that govern how the backup port behaves, ensuring stable and safe power delivery to critical loads when the main grid is unavailable.

Backup Port Enabling
 Activates the backup output port of the inverter. When enabled, this port supplies power to connected backup loads during a grid outage or in off-grid operation.

Backup Voltage Setting:
 Defines the output voltage level when the inverter operates in backup (off-grid) mode. This ensures stable power supply to connected backup loads during a grid outage.

Bypass Overload Depressurization
 When the system detects an overload in backup mode, this setting allows the inverter to temporarily reduce or shut down output to protect the system. It helps prevent damage by relieving pressure on the system during excessive load conditions.

Min-Droop Voltage
 This setting defines the lowest voltage the inverter can drop to during an overload in backup mode. It is part of the voltage droop function, which allows the inverter to reduce output voltage to help manage overload conditions and protect the system. 

2.7.2.

Smart Port – AC Coupling

The Smart Port – AC Coupling settings allow users to manage how the Solis hybrid inverter interacts with AC-coupled PV inverters, especially during off-grid operation. This feature becomes active only when both the grid and generator are disconnected, enabling seamless integration and coordinated power management between battery storage and AC-coupled solar sources. All settings can be accessed and adjusted via SolisCloud.

AC Coupling Control (No Grid / No Generator Condition)
This feature only functions when both the grid and generator are disconnected.

Position:
Defines where the PV inverter is connected — typically via the Generator Port or Backup Port.

⚠️ For models like S6-EH1P(3-6)K-L, only the Backup Port is supported.

AC Coupling OFF SOC / AC Coupling OFF Voltage:
 Used to set thresholds that limit charging from AC-coupled PV inverters to avoid battery overcharge.

• For lithium batteries, use OFF SOC (e.g., 90%)
• For lead-acid batteries, use OFF Voltage

How it works (example):
 If OFF SOC is set to 90% and Max Frequency is 52 Hz:

• When the battery SOC reaches 80% (10% below OFF SOC), the hybrid inverter will begin to gradually increase the backup port output frequency.
• This rising frequency signals the AC-coupled PV inverter to reduce its power output.
• As SOC reaches 90%, frequency rises to 52 Hz, effectively throttling or stopping PV generation to protect the battery.

2.7.3.

Smart Port – GEN Settings

The Smart Port – GEN Settings section in SolisCloud allows users to configure how the inverter interacts with a connected generator. These settings are essential for systems that rely on generator backup during grid outages or off-grid operation. The inverter can automatically control generator operation based on battery State of Charge (SOC), or allow manual control when needed. Correct configuration ensures smooth integration and protects both the inverter and generator from potential issues.

NOTE:
You can connect the generator to either the GEN port or the Grid port.

⚠️ If you choose to connect the generator to the Grid port, ensure that the grid port’s power source is correctly selected. An incorrect configuration may result in damage to the generator.

Generator Position:

Defines the connection point for the generator and supports various generator connection modes.

GEN Start SOC / GEN Stop SOC:

Automatically starts or stops the generator based on the battery’s State of Charge (SOC) when there is no grid power.

GEN Signal:

• Yes: The generator supports automatic start-stop and can be controlled by the inverter.
• No: The generator does not support automatic control and must be started or stopped manually.

GEN Force / GEN Stop:

Enables manual control to start or stop the generator regardless of whether the automatic start/stop conditions are met.

2.8

Advanced Settings

The Advanced Settings menu provides access to detailed configuration options intended for experienced users and installers. These settings allow for fine-tuning of system behavior, performance optimization, and regional compliance. Key functionalities include meter communication setup, inverter power control, power factor management, MPPT scanning, safety checks, and system calibration.

This section also includes specialized tools such as leased operation modes or EPS behaviour (for specific markets). Some parameters are intended for diagnostic or commissioning use and should only be modified with appropriate technical guidance. 

2.8.1.

Advanced Settings  – Meter Settings

Correct meter configuration is essential for the hybrid system to operate accurately. This section allows you to set meter type and location to ensure proper energy flow monitoring and system coordination.

2.8.2.

Advanced Settings  – Inverter Output Power Settings 

This section allows you to define the inverter’s active and reactive power limits. You can set the maximum output power percentage, apply reactive power caps, and choose whether these settings are stored after a shutdown. Proper configuration ensures the system meets site-specific or grid requirements.

2.8.3.

Advanced Settings  – Power Factor Settings

This section lets you configure the inverter’s power factor to meet grid or site-specific requirements. You can set a fixed power factor value within the range of -1 to -0.8 (leading) or 0.8 to 1 (lagging), and choose whether the setting is retained after a shutdown using the Power Down Storage option.

2.8.4.

Advanced Settings  –MPPT Multi-peak Scanning Set 

This function is designed to improve energy harvesting under partial shading conditions by periodically performing a global Maximum Power Point (MPP) scan. It uses IV curve scanning to locate the optimal operating point when shadows affect the PV array.

MPPT Multi-peak Scanning Switch: 

Enable or disable the global MPP scanning. Enabling it can enhance performance under shading but may slightly reduce generation during each scan.

MPPT Multi-peak Scan Interval: 

Set the time interval (600–10,800 seconds) between scans. Shorter intervals provide more frequent adjustments but may impact overall energy yield due to temporary power drops during scanning.

Note: Use with caution—frequent scanning can reduce overall generation, as power output is briefly reduced during each scan.

2.8.5.

Advanced Settings  – Daily PV-ISO Detection 

This setting enables the hybrid inverter to perform a daily PV insulation resistance (PV-ISO) check each morning when solar input becomes available.

Daily PV-ISO Detection: 

Enable or disable this function.

Traditionally, hybrid inverters only perform the PV-ISO check once during initial startup. If a battery is connected, the system might skip further checks until a full reboot. Enabling this feature ensures that PV insulation resistance is checked every morning, improving safety and ensuring ongoing system integrity.

2.8.6.

Advanced Settings  – Paid Leasing Function 

This setting is used in systems operated under a paid leasing or financing model. When enabled, it allows the inverter to operate according to leasing contract rules, such as limiting generation, logging usage data, or coordinating with a remote management platform.

• Paid Leasing Function: Enable or disable this feature depending on whether your system is under a leasing arrangement.

Note: This function is typically region- or provider-specific, and should only be activated if instructed by your system provider.

2.8.7.

Advanced Settings  – Other Settings

This section contains additional utility and maintenance settings for the inverter. These options support troubleshooting, system resets, display restarts, and voltage measurement adjustments to ensure reliable and accurate system operation.

Only PV Power Load:

Enable/Disable
 When enabled, the system allows only PV-generated power to supply the load, excluding battery or grid input.

PV Only Overload Reset

Overload Fault Clearing
 Clears overload faults that occurred during PV-only operation, restoring normal function once the fault condition is removed.

Clear Yield Data

ON/OFF
 Resets the accumulated energy generation statistics (yield data) for the inverter.

Factory Reset

Restores all inverter settings to factory defaults.
Use with caution, as this action erases all customized configurations.

Restart HMI

Reboots the Human-Machine Interface (display/control screen) without affecting inverter operation. Useful for refreshing the display or after parameter updates.

Phase A/B/C Voltage Compensation

Adjustable range: -5 V to +5 V
 Fine-tunes the voltage measurement of each AC phase individually. This is typically used during commissioning or troubleshooting to correct minor deviations in voltage sensing.

2.8.8.

Advanced Settings  – Calibration Settings

The Calibration Settings section is intended for use during system commissioning or advanced troubleshooting by qualified personnel. These parameters allow fine-tuning of energy reporting and output accuracy to align with external metering or utility requirements.

Total Generation:

Range: 0 ~ 10,000,000 kWh
 This setting allows you to manually input a total accumulated energy generation value. It is typically used when replacing or resetting the inverter and you want to preserve the recorded generation total for consistency in system monitoring.

Power Calibration Factor:

Range: 800 ~ 1200
Adjusts the inverter’s power output measurement. This factor is used to fine-tune the accuracy of real power readings, especially when aligning with external calibrated energy meters. Only qualified installers should modify this value, as incorrect settings can lead to inaccurate energy reporting.

2.8.9.

Advanced Settings  – Special Function Settings 1 

The Special Function Settings section provides access to a range of advanced configuration options for internal diagnostics, protection features, and regional grid compliance functions. These parameters are primarily intended for manufacturer use, R&D, or specific grid code compliance—most settings should not be modified by the installer unless explicitly instructed by technical support or local regulations.

Page 1: 

Page 2: 

Key Parameters Overview:

Grid Filter No.

Defines the filtering profile for AC grid signals.

⚠️ Do not change — incorrect adjustment may cause instability in grid interaction.

GRID-INTF.02 Func

Controls grid anti-interference behavior.

⚠️ Do not change — intended for internal use to handle grid signal noise.

Relay-Fault Func

Enables or disables relay fault detection ("RelayCheck Fail").

⚠️ Do not change — critical safety function.

ILeak-Fault Func

Controls insulation leakage fault detection.

⚠️ Do not change — essential for system safety.

PV-G-Fault Func

Enables PV-to-ground fault protection.

⚠️ Do not change — linked to PV insulation monitoring.

AFCI Protect / AFCI Level

Activates Arc Fault Circuit Interruption (AFCI) and sets sensitivity level.

Use with care — setting the AFCI level too low may cause false alarms. Adjust only if instructed.

Clear AFCI Fault

Clears stored AFCI fault events after checking and resolving issues.

MPPT Parallel Mode

Allows tracking channels (MPPTs) to operate in parallel.

Not recommended to enable unless advised — may impact optimization.

Constant Voltage Mode / Setting Voltage Value

Forces inverter to operate at a fixed DC voltage.

Not recommended — typically used in testing or special setups.

IgADCheckPRO

Checks internal current sampling circuits.

⚠️ Do not change — diagnostic use only.

IgFollow

Adjusts inverter behavior during backup switching.

Enable only if backup transfer time is excessively long.

No Boost / DC inject ADJ

Internal R&D parameters.

⚠️ Do not change under any circumstance — non-functional for installers.

G100 Switch / Backflow Current / Manual Fault Clearing

Specific to UK G100 certification.

Use only for UK installations following local compliance requirements.

2.8.10.

Advanced Settings  – Special Function Settings 2

This section includes parameters related to grid support behavior, especially for compliance with regional Voltage Ride-Through (VRT) and Frequency Ride-Through (FRT) requirements. These functions are typically defined by grid codes and determine how the inverter responds to voltage or frequency disturbances on the grid.

⚠️ Important: These settings are region- and utility-specific, and should not be modified unless explicitly required by local grid regulations or under guidance from the manufacturer.

DO NOT CHANGE ANYTHING HERE: 

VRT Switch:

Enables or disables the Voltage Ride-Through function.

When enabled, the inverter will continue operating (instead of disconnecting) during brief voltage dips or surges, helping to stabilize the grid.

Use only if required by the local grid code.

Zero Current Mode

When enabled, the inverter stops exporting current during specific fault conditions.

Useful in scenarios where the inverter must remain connected to the grid but not inject any power.

Do not enable unless specified by the grid authority.

LVRT_02

Low Voltage Ride-Through setting – configures how the inverter behaves during under-voltage conditions.

Works together with other VRT parameters to ensure continued operation under certain low-voltage thresholds.

Adjust only with grid code documentation.

VRT_US

U.S.-specific Voltage Ride-Through setting, aligned with UL 1741SA or IEEE 1547 standards.

Enable only if the inverter is operating under U.S. grid compliance regulations.

FRT_US

U.S.-specific Frequency Ride-Through setting.

Determines how the inverter responds to abnormal frequency events (over- or under-frequency) in U.S. grids.

Enable only in U.S. installations requiring this feature.

LVRT_BRA

Brazil-specific Low Voltage Ride-Through function.

Tailored for compliance with Brazilian grid codes (e.g., ANEEL standards).

Enable only in Brazilian installations.

2.8.11.

Advanced Settings  – Special Function Settings 3

This section includes advanced safety and calibration parameters related to current sensing and insulation monitoring. These settings influence how the inverter detects and responds to abnormal electrical conditions such as leakage currents or insulation faults.

⚠️ Important: Except for IleakLim and RisoLim, the remaining parameters should not be modified by installers. They are factory-calibrated and intended for internal use or R&D-level diagnostics.

IleakLim:

Leakage Current Protection Limit (corresponds to Ileak-PRO04).

Sets the threshold for continuous leakage current monitoring.

Can be adjusted to align with local electrical safety standards.

✅ Installers may adjust this if required by regional electrical codes.

RisoLim

Insulation Resistance Protection Limit (PV ISO limit).

Determines the minimum acceptable resistance level between PV inputs and ground.

Helps prevent operation under unsafe insulation conditions.

✅ Installers may adjust this if needed for specific system configurations or compliance.

2.8.12.

Advanced Settings  – EPS Mode (Only for Italy) 

The EPS (Emergency Power Supply) Mode is a country-specific feature designed to meet Italian grid regulations. When enabled, this mode adjusts the inverter’s backup behavior to comply with local requirements.

⚠️ Note: In this mode, the backup port will not be enabled when the grid is available—it only activates during a grid outage.

EPS Switching Time

Range: 10 ~ 99,990 ms
 Defines the delay between a grid failure and the activation of the backup port (EPS output).

• A shorter time ensures faster switchover but may risk false triggers.
• A longer time ensures grid-loss is confirmed before switching.

EPS DOD (Depth of Discharge)

Range: 10 ~ 100%
 Sets the minimum battery state of charge that must be maintained for EPS use.

• Higher values reserve more energy for emergencies.
• Lower values allow deeper battery usage but may reduce EPS availability.

2.8.13.

Advanced Settings  – Passive Mode

Passive Mode is designed for applications where the inverter must be fully controlled by an external EMS (Energy Management System)—typically in advanced grid service projects such as FCAS (Frequency Control Ancillary Services).

⚠️ Note: When Passive Mode is enabled, the inverter will not actively manage charging/discharging. Instead, it responds solely to EMS commands.

Passive Mode Switch:
 Enables or disables Passive Mode.

FCAS Droop Switch
 Enables frequency droop response, allowing the inverter to adjust power output in proportion to frequency deviations—required for FCAS compliance.

Pcharge / Pdischarge
Set the power limits for charging and discharging under Passive Mode control.

⚠️ Caution: These settings are intended for integration into grid services and should only be configured by professionals familiar with EMS and FCAS requirements.

2.9.

Parallel Settings 

Parallel Mode enables multiple hybrid inverters to work together as part of a coordinated system. When using more than one inverter, it’s essential to set each unit correctly to ensure stable communication, proper synchronization, and system reliability.

⚠️ Always follow the correct setup order and address assignment to avoid communication conflicts and system errors.

Parallel Mode: 

Select between Single (standalone) or Parallel operation.

Physical Address ID

Assigns a unique address (1–99) to each inverter in the system.

The master inverter must be set to address 1.

Do not use address 0.

Manual Set Master/Slave

Defines the communication role of the inverter.

Total Number of Hybrid Inverters Connected

Set the number of inverters in the system (range: 2–6).

Parallel Sync

Choose Locked to automatically synchronize all parallel configuration parameters from the Master to all Slave units—reducing manual setup errors and ensuring consistency across the system.

2.10.

Modify Serial Number

Allows manual modification of the inverter’s serial number. Use with caution—typically for maintenance or replacement scenarios.

Final Tips 

• Do not change advanced or grid-specific settings unless instructed by your local utility or Solis technical support.
• Regularly monitor firmware updates to ensure compatibility and access to the latest control functions.
• Contact Solis support if you are unsure about a setting or require help tailoring your inverter's performance.