Anern Hybrid Solar Inverter User Manual

1. Introduction

This manual describes the assembly, installation, operation, and maintenance of the Anern Hybrid Solar Inverter. This is a multifunctional solar inverter, integrated with an MPPT solar charge controller, a high-frequency pure sine wave inverter, and a UPS function module in one machine. It is designed for off-grid backup power and self-consumption applications and can operate with or without batteries.

The complete system requires additional devices such as PV modules, a generator, or a utility grid for full functionality. The inverter features a built-in or plug-and-play WiFi module for remote monitoring, allowing users to check the PV system status via mobile phone or website anytime, anywhere.

Image: Anern Hybrid Solar Inverter FGI-S12000 with key specifications (12000W/6500W, 160A/120A Max Charging Current, 48V/24V Nominal Output Voltage, 500VDC Max DC Voltage).

Image: System diagram showing solar panel, utility, inverter, battery, and house loads, indicating suitability for acid and lithium batteries.

2. Safety Instructions

This chapter contains important safety and operating instructions. Read and keep this manual for future reference.

• Ensure you select the correct battery system type (lithium or lead-acid). Incorrect selection can prevent the energy storage system from functioning normally.
• Before using the unit, read all instructions and cautionary markings on the unit, batteries, and all appropriate sections of this manual. The company reserves the right to deny quality assurance if the instructions are not followed, leading to equipment damage.
• All operation and connection procedures must be performed by a professional electrical or mechanical engineer.
• All electrical installations must comply with local electrical safety standards.
• When installing PV modules during the daytime, cover them with opaque materials to avoid dangerous high terminal voltage from sunlight.
• CAUTION - To reduce the risk of injury, charge only deep-cycle lead-acid type rechargeable batteries and lithium batteries. Other types of batteries may burst, causing personal injury and damage.
• Do not disassemble the unit. Take it to a qualified service center when service or repair is required. Incorrect re-assembly may result in a risk of electric shock or fire.
• To reduce the risk of electric shock, disconnect all wiring before attempting any maintenance or cleaning. Turning off the unit alone will not eliminate this risk.
• NEVER charge a frozen battery.
• For optimum operation, follow the required specifications to select appropriate cable sizes. Correct operation of this inverter is crucial.
• Be very cautious when working with metal tools on or around batteries. Dropping a tool could spark or short-circuit batteries or other electrical parts, potentially causing an explosion.
• Strictly follow the installation procedure when disconnecting AC or DC terminals. Refer to the Installation section for details.
• GROUNDING INSTRUCTIONS – This inverter must be connected to a permanent grounded wiring system. Comply with local requirements and regulations for installation.
• NEVER short-circuit AC output and DC input. Do NOT connect to the mains when DC input is short-circuited.
• Ensure the inverter is completely assembled before operation.

3. Setup

3.1 Unpacking and Inspection

Products are strictly tested before leaving the factory. Inspect upon receipt. If damaged, contact your local distributor. Open the box to check for outer packaging integrity and internal equipment damage.3.2 Installation Tools

The following tools are required for installation:

• Multi-meter
• Protective gloves
• Insulated anti-smashing shoes
• Safety glasses
• ESD wrist strap
• Hammer drill
• Electric screwdriver
• Cross screwdriver
• Rubber mallet
• Spirit level
• Wire cutter / stripper
• Terminal crimping tool

3.3 Mounting the Unit

Consider the following for installation location:

• Do not mount on flammable construction materials.
• Mount on a solid surface.
• Install at eye level for easy LCD display reading.
• Ambient temperature should be between -10°C and 60°C for optimal operation.
• Mount vertically as recommended.
• Ensure 30cm clearance on all sides for heat dissipation and wiring access.

Installation Steps:

1. Use an Ø8 drilling bit to drill holes on the mounting surface. The distance between holes is 110mm. Insert expansion screw tubes (M6 suggested).
2. Pick up the inverter vertically and align the screw holes at the top with the installed expansion screw tubes. Fix the inverter with screws.
3. Before connecting wiring, remove the bottom cover by unscrewing four screws.

Image: Back panel connections of the inverter, showing AC IN, Main OUT, Second OUT, WiFi, BMS, Battery Input, PV Input, ON/OFF switch, AC Input Breaker, PE.

3.4 AC Input / Output Connection

Recommended AC Input Wires:

Recommended AC Output Wires:

AC Input (AC IN) Connection Steps:

1. Before making AC connection, open the AC circuit breaker.
2. Remove 12mm of insulation from cable ends, shorten the conductor part to 10mm. Insert into tubular terminal and crimp tightly.
3. Insert AC input cables according to polarities (PE: Protective Earth (yellow-green), L: LINE (brown or black), N: Neutral (blue)) and tighten terminal screws. Connect PE protective cable first.
4. Ensure cables are securely connected.

3.5 PV Connection

Recommended PV Module Cable:

PV Module Selection Parameters:

• Max PV Array Open Circuit Voltage (Voc): 500Vdc
• Start-up Voltage: 80Vdc
• PV Array MPPT Voltage Range: 60Vdc~450Vdc

PV Module Connection Steps:

1. Before making PV connection, open the DC circuit breaker.
2. Remove 12mm of insulation from cable ends, shorten the conductor part to 10mm. Insert into tubular terminal and crimp tightly.
3. Use a multi-meter to check polarities (+ → PV+ (red), - → PV- (black)).
4. Insert PV cables according to polarities and tighten terminal screws.
5. Ensure cables are securely connected.
6. PV1 and PV2 can be connected to different panel strings. If connected to the same panel string, change setting 62 to enable PV parallel mode.

3.6 Battery Connection

3.6.1 Lead-acid Battery Connection

Choose a proper capacity lead-acid battery with a nominal voltage of 48V. Select 'AGM' or 'FLD (flooded)' as the battery type.

Recommended Battery Cable and Terminal Size:

For lead-acid batteries, the recommended charge current is 0.3C (C ≤ battery capacity).

Battery Connection Steps:

1. Unscrew pre-fixed screws on battery poles. Prepare 2 DT terminals.
2. Remove 12mm of insulation from cable ends, shorten the conductor part to 10mm. Insert into the DT terminal and crimp tightly.
3. Pass the battery cable through the battery installation hole on the bottom shell and tighten the terminal screws. Ensure correct polarity at both the battery and inverter/charger, and that DT terminals are tightly screwed to the battery terminals.
4. Connect all battery packs as required. It is suggested to connect at least a 200Ah capacity battery.

3.6.2 Lithium Battery Connection

If using a lithium battery, first check protocol compatibility. The lithium battery has two connectors: an RJ45 port for BMS and a power cable.

Lithium Battery Connection Steps:

1. Follow section 3.6.1 to connect the power cable.
2. Connect the RJ45 terminal of the battery communication cable to the BMS communication port of the inverter. The communication protocol should be RS485 or CAN.
3. Insert the other end of the RJ45 (battery communication cable) into the battery's communication port.

Note: If using a lithium battery, ensure the BMS communication cable is connected between the battery and the inverter.

Image: Compatible with multiple battery types: AGM, GEL, FLD, SLD, LiFePO4.

Image: Support Batteryless Mode: No batteries required, Direct photovoltaic supply, Plug and Play, with simple vs. complex wiring diagrams.

3.7 Meter Connection

The inverter can connect to an external meter installed at the grid side to enable precise grid-tied functionality. The inverter's interface for the meter uses RS485A and RS485B in the BMS interface. When RS485 A/B are used with a meter, CAN H/L can also be connected with BMS. Ensure the meter model supports the inverter's communication protocol.3.8 Smart Communication Stick Connection (Optional)

The smart communication stick (WiFi) connects the inverter to a cloud platform. Insert the stick directly into the COM port. Some models have a built-in WiFi monitoring function. Refer to the solar APP quick configuration guide for details.3.9 Final Assembly

After connecting all wiring, re-attach the bottom cover by screwing in the four screws mentioned in Section 3.3.

4. Operating

4.1 Power ON/OFF

Once the unit is properly installed and batteries are connected, press the ON/OFF switch (located on the bottom of the case) to turn on the unit.

4.2 Operation and Display Panel

The front panel of the inverter features an operation and display panel, including four indicators, four function keys, and an LCD display. This panel shows the operating status and input/output power information.

Image: Detailed LED Display with icons and button functions.

RGB Indicator Light:

• Connect the battery: The RGB lights will be red.
• Connect to photovoltaic system: The RGB lights are orange.
• Connect to mains electricity: The RGB lights will be blue.

LED Indicator Messages:

Function Buttons:

4.3 LCD Setting

To enter setting mode, press and hold the ENTER button for 2 seconds. Use the 'UP' or 'DOWN' buttons to select programs, then press 'ENTER' to confirm or 'ESC' to exit.

Key settings include:

• Output Voltage (Program 01): Adjustable to 220V, 230V, 240V (default 230V).
• Output Frequency (Program 02): Adjustable to 50Hz, 60Hz (default 50Hz). Takes effect immediately in standby or grid mode.
• Output Source Priority (Program 03):
  • **Grid First (default):** Grid powers loads first. Solar charges battery. If solar is insufficient, grid charges battery. If grid is insufficient for all loads, solar assists. If both are insufficient, battery assists. If all are insufficient, inverter goes to standby and charges battery.
  • **Solar First:** Solar powers loads first. If solar is sufficient, it charges battery. If solar is insufficient for all loads, grid assists. Extra grid power charges battery. If all are insufficient, inverter goes to standby and charges battery.
  • **PBG Priority:** Solar powers loads first. If solar is sufficient, battery charges with solar. If solar is insufficient, battery assists. If solar and battery are insufficient, grid assists. If all are insufficient, inverter goes to standby and charges battery.
  • MKS: Generator powers loads first. Work mode is PBG if generator, PV, and battery exist. GPB if generator and battery exist (no PV). PBG if generator and PV exist (no battery).
• Input Mode (Program 04):
  • APP (Appliance, default): For household appliances. Typical switching time: 10ms.
  • UPS: For computer and other devices. Typical switching time: 10ms.
  • GEN: To connect a generator from AC IN port. Typical switching time: 20ms.
• Charger Source Priority (Program 05):
  • PNG (PV and Grid, default): PV and Grid charge at the same time.
  • OPV (Only PV): Only PV charges.
  • PVF (PV first): If both grid and PV are available, PV charges. If only PV is available, PV charges. If only grid is available, grid charges.
• Grid Charging Current (Program 06): Set charging current for grid chargers (2-160A, default 60A).
• Maximum Charging Current (Program 07): Set total charging current for solar and grid chargers (2-160A, default 100A). Follows BMS data if connected.
• Menu Default (Program 08): ON (default) returns to first page after 1 min inactivity; OFF stays on current page.
• Auto Restart on Overload (Program 09): ON (default) enables auto restart.
• Auto Restart on Over Temperature (Program 10): ON (default) enables auto restart.
• Main Input Cut Warning (Program 11): ON (default) enables grid input loss alarm (buzzer for 5s). OFF disables buzzer.
• Energy-saving Mode (Program 12): OFF (default). ON: In battery mode, if load < 25W/100VA, output stops then resumes. If load < 25W, loops stop/resume. If load > 35W/120VA, resumes continuous normal output.
• Overload Transfer to Bypass (Program 13): OFF (default). ON: In PBG or MKS mode, if overload occurs, system immediately transfers to bypass mode (grid power output).
• Silent Mode (Program 14): OFF (default). ON: Buzzer will not sound for alarms or faults. Button sound is unaffected.
• Battery Return to Grid Voltage Point (Program 15):
  • AGM/FLD: 44-52V (default 46V).
  • LIB/FEL/CUS: 40-50V (default 47.6V for LIB/CUS, 49.6V for FEL).
• Switching Back to Battery Mode Voltage Points (Program 16):
  • AGM/FLD: 48-58V (default 52V).
  • LIB/FEL/CUS: 46-58V (default 54.4V for LIB/CUS, 53.2V for FEL).
• Battery Type (Program 17): Select AGM, Flooded, Lithium (Ternary), FEL (Lithium Iron), or User-Defined.
• Battery Low Voltage Alarm Setting (Program 18):
  • LIB/FEL: 41.2-50V (default 47.6V for LIB, 48V for FEL).
  • CUS: 42-54V (default 47.6V).
  • AGM/FLD: Not adjustable, default 44V.
• Battery Shutdown Voltage Point (Program 19):
  • LIB/FEL: 40-48V (default 46V for LIB, 42V for FEL).
  • CUS: 40-48V (initial settings same as LIB).
  • AGM/FLD: Not adjustable, default 42V.
• Constant Voltage Mode Voltage Point Setting (Program 20):
  • AGM: Not configurable, default 56.4V.
  • FLD: Not configurable, default 58V.
  • LIB/CUS: 48-60V (default 56.4V).
  • FEL: 48-60V (default 55.2V).
• Floating Charge Mode Voltage Point Setting (Program 21):
  • AGM/FLD: Not configurable, default 54V.
  • CUS: 48-60V (default 55.2V).
  • LIB/FEL: 50-58V (default 55.2V for LIB, 54.4V for FEL).
• Grid Low Voltage Point (Program 22):
  • APP/GEN: 90-154V (default 154V).
  • UPS: 170-200V (default 185V).
• Grid High Voltage Point (Program 23):
  • APP/GEN: 264-280V (default 264V).
  • UPS: Not changeable.
• Automatic Turn Off Backlight (Program 24): ON (default) turns off backlight after 1 minute of no button operation.
• Inverter Soft Start Setting (Program 25): OFF (default). ON: Inverter output gradually increases from 0 to target voltage.
• Reset Factory Setting (Program 26): OFF (default). ON: Restores all settings to factory defaults.
• Battery Disconnection Alarm (Program 29): OFF (default) disables the alarm.
• Battery Dual Output Low Voltage Shutdown Point (Program 38): 44-60V (default 48V). When enabled, secondary output turns off if battery voltage drops below set point.
• Battery Dual Output Duration (Program 39): 5-900 minutes (default OFF). FUL for unlimited output.
• Dual Output Battery Mode Cut-off SOC (Program 40): 5-90% (default 20%). Secondary output turns off if battery SOC is below set value.
• BMS Communication Function (Program 44): OFF (default). ON: Inverter communicates with lithium battery BMS via specific protocols (CVT, PYL, GRO, VOL, IRO, PAC).
• BMS ID (Program 45): AtO (auto, default) or numerical value [0, 15].
• Low SOC Shutdown (Program 46): 5-50% (default 20%). Inverter shuts down if battery SOC is low.
• High SOC to Battery (Program 47): 10-100% (default 90%). In PBG priority mode, inverter switches to battery mode when lithium battery SOC reaches set value.
• Low SOC to Grid (Program 48): 10-90% (default 50%). In PBG priority mode, inverter switches to grid mode when lithium battery SOC is low.
• Battery Max. Discharge Current (Program 61): 10-220A (default OFF). Limits discharge current.
• PV Parallel Mode (Program 62): OFF (default). ON: PV1/PV2 are connected to the same PV string.

4.4 Display Information

The LCD display information can be cycled by pressing the 'UP' or 'DOWN' keys. If there is no operation for a long time, the daily PV power generation will be displayed.

Key display information includes:

• P1: Daily PV power generation from solar.
• P2: Total PV power generation from solar.
• P3: Lithium battery voltage and current. Displays ERR if BMS communication fails or if BMS function is disabled.
• P4: Lithium battery temperature and SOC. Displays ERR if BMS communication fails or if BMS function is disabled.
• P5: Lithium battery rated capacity and remaining capacity. Displays ERR if BMS communication fails or if BMS function is disabled.
• P6: Lithium battery maximum charging voltage and minimum discharging voltage. Displays ERR if BMS communication fails or if BMS function is disabled.
• P7: Lithium battery maximum charging current and maximum discharging current. Displays ERR if BMS communication fails or if BMS function is disabled.
• P8: Lithium battery alarm and fault information. Displays ERR if BMS communication fails or if BMS function is disabled.
• P9: Inverter firmware version.

Image: User-submitted image of the inverter's LCD display showing operational data.

5. Maintenance

5.1 Battery Equalization

Battery equalization reverses the buildup of negative chemical effects like stratification and removes sulfate crystals that reduce battery capacity. It is recommended to equalize batteries periodically.

How to Apply Equalization Function:

Enable battery equalization in monitoring LCD setting Program 32 by setting time, or choose immediate equalization on Program 35. Then, apply this function by:

• Set equalization voltage point on Program 31.
• Set equalization charging time on Program 32.
• Set equalization delay time on Program 33.
• Set equalization interval time on Program 34.
• Set immediate equalization mode activation on Program 35.

When to Equalize:

In the float stage, when the set equalization interval (battery equalization cycle) is reached, or if immediate equalization is active, the controller will enter the Equalize stage.

Equalize Charging Time and Timeout:

During the Equalize stage, the controller supplies power to charge the battery until its voltage reaches the equalization voltage. Constant-voltage regulation maintains the battery voltage. The battery remains in the Equalize stage until the set equalized time is reached.

If the equalized time expires and the battery voltage has not reached the equalization voltage point, the charge controller will extend the equalized time until the battery voltage achieves the equalization voltage. If the battery voltage is still lower than the equalization voltage when the equalized timeout setting is over, the charge controller will stop equalization and return to the float stage.

6. Troubleshooting

6.1 Fault Reference Code

When a fault occurs, the fault indicator is always on, and the buzzer sounds for 10 seconds then stops. The system will attempt to restart automatically. If the machine does not work after six restarts, it will remain in fault status, and the LCD will display the fault code. To restart, completely power off the machine (off the screen) or wait for 15 minutes.

Image: User-submitted image of the inverter's specification label (AN-FGI-S6500), showing a fault code example.

Fault Code Sheet:

6.2 Alarm Reference Code

When an alarm occurs, the inverter does not enter fault mode, but the LED red light flashes, and the LCD displays the alarm code.

Alarm Code Sheet:

6.3 General Troubleshooting

This section provides solutions for common issues not covered by specific fault or alarm codes.

7. Specifications

Image: Comparison table between FGI-S12000 and MAX-10200 models, showing Rated Output Power, Max PV Output Power, Number of MPPTs, IGBT, Electrolysis, Capacitor.

Image: Solar Energy Storage System diagram showing connections between Solar Panels, Grid, Generator, Inverter, Lithium/Lead-acid Battery, Home Loads, and Cloud/APP monitoring.

8. User Tips

• Parameter Settings: Carefully set all operational parameters according to your specific system configuration and battery type for optimal performance and longevity.
• Unboxing and Inspection: Always inspect the package and product thoroughly upon arrival for any damage, especially after long transit times.
• Support: If you encounter any issues or have questions, reach out to the seller or technical support. Clear communication can help resolve problems efficiently.

9. Frequently Asked Questions (FAQ)

Q: What are the output voltage options for this inverter?

A: The inverter supports output voltages of 220V, 230V, and 240V AC.

Q: What is the weight of the product?

A: The inverter weighs 16kg.

Q: Does this inverter support 110V or 127V output?

A: The specifications indicate support for 220V, 230V, and 240V AC output. Please refer to the detailed specifications for your specific model variant.

10. Warranty and Support

For detailed warranty information, technical support, and service inquiries, please refer to the official user manual PDF provided by the manufacturer or contact your point of purchase. The comprehensive user manual can be found here.