Anern Hybrid Solar Inverter User Manual

1. Introduction

1.1 Purpose

This manual describes the assembly, installation, operation, and troubleshooting of the Anern Hybrid Solar Inverter. Please read this manual carefully before installations and operations. Keep this manual for future reference.

1.2 Scope

This manual provides safety and installation guidelines as well as information on tools and wiring for the Anern Hybrid Solar Inverter. This multi-function inverter/charger combines the functions of an inverter, solar charger, and battery charger to offer uninterruptible power support in a portable size. Its comprehensive LCD display offers user-configurable and easy-accessible button operation for settings such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.

1.3 Key Features

• Pure Sine Wave Inverter
• Configurable input voltage range for home appliances and personal computers via LCD setting
• Configurable battery charging current based on applications via LCD setting
• Configurable AC/Solar Charger priority via LCD setting
• Compatible with mains voltage or generator power
• Auto restart while AC is recovering
• Overload/Over temperature/Short circuit protection
• Smart battery charger design for optimized battery performance
• Cold start function
• Built-in 160A MPPT solar controller (for 10.2KW), 140A (for 8.2KW)
• Max 7500W & 10800W solar input power respectively
• Wide PV input voltage range (90-450VDC)
• Built-in anti-dust kit for harsh environments
• Dual PV Input & AC output (Only MAX 10200W models have dual MPPT)
• WIFI available for IOS and Android systems
• Compatible battery types: Lead-acid/Lithium iron phosphate (LiFePO4)/Colloid/Lithium battery

1.4 Basic System Architecture

The following illustration shows a basic application for this inverter/charger. It includes the following devices for a complete running system: Generator or Utility, and PV modules. Consult with your system integrator for other possible system architectures depending on your requirements. This inverter can power all kinds of appliances in home or office environments, including motor-type appliances such as tube lights, fans, refrigerators, and air conditioners.

2. Safety Instructions

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

1. Before using the unit, read all instructions and cautionary markings on the unit, the batteries, and all appropriate sections of this manual.
2. CAUTION: To reduce risk of injury, charge only deep-cycle lead acid type rechargeable batteries. Other types of batteries may burst, causing personal injury and damage.
3. 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.
4. To reduce risk of electric shock, disconnect all wirings before attempting any maintenance or cleaning. Turning off the unit will not reduce this risk.
5. CAUTION: Only qualified personnel can install this device with battery.
6. NEVER charge a frozen battery.
7. For optimum operation of this inverter/charger, please follow required specifications to select appropriate cable size. It's very important to correctly operate this inverter/charger.
8. Be very cautious when working with metal tools on or around batteries. A potential risk exists to drop a tool to spark or short circuit batteries or other electrical parts and could cause an explosion.
9. Please strictly follow the installation procedure when you want to disconnect AC or DC terminals. Please refer to the INSTALLATION section of this manual for the details.
10. One piece of 150A fuse is provided as over-current protection for the battery supply.
11. GROUNDING INSTRUCTIONS: This inverter/charger should be connected to a permanent grounded wiring system. Be sure to comply with local requirements and regulations to install this inverter.
12. NEVER cause AC output and DC input short circuits. Do NOT connect to the mains when DC input short circuits.
13. Warning!! Only qualified service persons are able to service this device. If errors still persist after following the troubleshooting table, please send this inverter/charger back to a local dealer or service center for maintenance.

3. Product Overview

1. LCD display
2. Status indicator
3. Charging indicator
4. Fault indicator
5. Touch Function buttons
6. Power on/off switch
7. AC input
8. Main output
9. Second output
10. PV1 and PV2 input
11. WIFI communication/RS-232 port
12. Battery communication/RS-485 port
13. Battery input
14. Anti dust kit

4. Installation

4.1 Unpacking and Inspection

Before installation, please inspect the unit. Be sure that nothing inside the package is damaged. You should have received the following items inside the package:

• The unit x 1
• User manual x 1
• Ring terminal x 1
• Mc4 terminal head x 2

4.2 Preparation

Before connecting all lines, remove the screws under the machine and remove the bottom cover plate.

4.3 Mounting the Unit

Consider the following points before selecting where to install:

• Do not mount the inverter on flammable construction materials.
• Mount on a solid surface.
• Install this inverter at eye level in order to allow the LCD display to be read at all times.
• For proper air circulation to dissipate heat, allow a clearance of approx. 20 cm to the side and approx. 50 cm above and below the unit.
• The ambient temperature should be between 0°C and 55°C to ensure optimal operation.
• The recommended installation position is to be adhered to the wall vertically.
• Make sure that other objects and surfaces are left with enough space from the machine to ensure adequate heat dissipation and that there is enough room to remove the wires.

SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.

Install the unit by screwing two screws. It's recommended to use M4 or M5 screws.

4.4 Battery Connection

CAUTION: For safety operation and regulation compliance, it's requested to install a separate DC over-current protector or disconnect device between battery and inverter. It may not be requested to have a disconnect device in some applications, however, it's still requested to have over-current protection installed. Please refer to the typical amperage in the table below as required fuse or breaker size.

WARNING! All wiring must be performed by qualified personnel.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for battery connection. To reduce risk of injury, please use the proper recommended cable as below.

Recommended battery cable size:

Battery Connection Steps:

1. Remove insulation sleeve 18 mm for positive and negative conductors.
2. Suggest to put bootlace ferrules on the end of positive and negative wires with a proper crimping tool.
3. Connect all battery packs as shown in the chart below.
4. Insert the battery wires flatly into battery connectors of the inverter and make sure the bolts are tightened with a torque of 2 Nm in a clockwise direction. Make sure polarity at both the battery and the inverter/charger is correctly connected and conductors are tightly screwed into the battery terminals. Recommended tool: #2 Pozi Screwdriver.

WARNING: Shock Hazard! Installation must be performed with care due to high battery voltage in series.

CAUTION!! Before making the final DC connection or closing the DC breaker/disconnector, be sure positive (+) must be connected to positive (+) and negative (-) must be connected to negative (-).

4.5 AC Input/Output Connection

CAUTION!! Before connecting to an AC input power source, please install a separate AC breaker between the inverter and the AC input power source. This will ensure the inverter can be securely disconnected during maintenance and fully protected from overcurrent of AC input. The recommended spec of AC breaker is 63A for 8.2KW/10.2KW.

CAUTION!! There are two terminal blocks with "IN" and "OUT" markings. Please do NOT mis-connect input and output connectors.

WARNING! All wiring must be performed by qualified personnel.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for AC input connection. To reduce risk of injury, please use the proper recommended cable size as below.

Suggested cable requirement for AC wires:

AC Input/Output Connection Steps:

1. Before making AC input/output connection, be sure to open the DC protector or disconnector first.
2. Remove insulation sleeve 10mm for six conductors. Shorten phase L and neutral conductor N by 3 mm.
3. Insert AC input wires according to polarities indicated on the terminal block and tighten the terminal screws. Be sure to connect the PE protective conductor (Ground - yellow-green) first.
4. Then, insert AC output wires according to polarities indicated on the terminal block and tighten the terminal screws (L - Line (brown or black), N - Neutral (blue)).
5. Make sure the wires are securely connected.

WARNING: Be sure that the AC power source is disconnected before attempting to hardwire it to the unit.

4.6 PV Connection

CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between the inverter and PV modules.

WARNING! It's very important for system safety and efficient operation to use appropriate cable for PV module connection. To reduce risk of injury, please use the proper recommended cable size as below.

Suggested cable requirement for PV wires:

PV Module Selection:

When selecting proper PV modules, please be sure to consider the below parameters:

1. Open circuit Voltage (Voc) of PV modules not exceeding the max. PV array open circuit voltage of the inverter.
2. Open circuit Voltage (Voc) of PV modules should be higher than the min. battery voltage.

Take a 250Wp PV module as an example. After considering the above two parameters, the recommended module configurations are listed in the table below:

PV Module Wire Connection:

1. Check the input voltage of PV array modules. The acceptable input voltage of the inverter is 120VDC - 500VDC. Please make sure that the maximum current load of each PV Input connector is 10A.

CAUTION: Exceeding the maximum input voltage can destroy the unit!! Check the system before wire connection.

2. Disconnect the DC circuit breaker.
3. Assemble provided PV connectors with PV modules by following the steps below.

Components for PV connectors and Tools:

Component	Image	Component	Image
Female connector housing		Male terminal
Female terminal		Crimping tool and spanner
Male connector housing

Cable preparation and connector assembly process:

Strip one cable 8 mm on both end sides and be careful NOT to nick conductors.

Then, use a spanner to screw the pressure dome tightly to the female connector and male connector as shown above.

4. Check the correct polarity of the connection cable from PV modules and PV input connectors. Then, connect the positive pole (+) of the connection cable to the positive pole (+) of the PV input connector. Connect the negative pole (-) of the connection cable to the negative pole (-) of the PV input connector.

4.7 Final Assembly

After connecting all wirings, please put the bottom cover back by screwing two screws as shown below.

4.8 Communication Connection

1. Wi-Fi cloud communication (option):

Please use the supplied communication cable to connect to the inverter and Wi-Fi module. Download the APP and install it from the APP store, and refer to the "Wi-Fi Plug Quick Installation Guideline" to set up the network and register. The inverter status will be shown by the mobile phone APP or webpage of the computer.

2. GPRS cloud communication (option):

Please use the supplied communication cable to connect to the inverter and GPRS module, and then apply external power to the GPRS module. Download the APP and install it from the APP store, and refer to the "GPRS RTU Quick Installation Guideline" to set up the network and register. The inverter status will be shown by the mobile phone APP or webpage of the computer.

3. Battery communication:

The communication between the battery and the inverter can be realized through the battery communication interface, so that the inverter and the lithium battery can exchange information (Baud rate: 9600).

4. Lithium battery and inverter connection:

Use power cables, communication cables for lithium batteries, and inverters to connect. Note: For lithium battery and inverter positive and negative positions, check the correct installation. The RJ45 connector of the communication cable connects to the BMS port of the inverter, and the other RJ45 connector connects to the RS485 port of the lithium battery. Before connecting, make sure that the lithium battery and inverter are turned off. (It is recommended to install a circuit breaker for the power cables of the lithium battery and the inverter battery interface. Otherwise, a spark may occur.)

5. Operation

5.1 Power ON/OFF

Once the unit has been properly installed and the batteries are connected well, simply press the On/Off switch (located on the button of the case) to turn on the unit.

5.2 Operation and Display Panel

The operation and display panel, shown in the product overview, is on the front panel of the inverter. It includes three indicators, four function keys, and an LCD display, indicating the operating status and input/output power information.

LED Indicator Messages:

Function Keys:

5.3 LCD Display Icons

5.4 LCD Setting

After pressing and holding the ENTER button for 3 seconds, the unit will enter setting mode. Press "UP" or "DOWN" button to select setting programs. Then, press "ENTER" button to confirm the selection or ESC button to exit.

Setting Programs Overview:

The manual provides detailed tables for various setting programs, including:

• Program 00: Exit setting mode (Escape, One-button restore).
• Program 01: Output source priority (Utility first, Solar first, SBU priority, MKS priority).
• Program 02: Maximum charging current (10A to 160A).
• Program 03: AC input voltage range (Appliances, UPS).
• Program 05: Battery type (AGM, Flooded, User-Defined, LIB, LIC, LIL).
• Program 06: Auto restart when overload occurs (Disable, Enable).
• Program 07: Auto restart when over temperature occurs (Disable, Enable).
• Program 09: Output frequency (50Hz, 60Hz).
• Program 10: Output voltage (220V, 230V, 240V).
• Program 11: Maximum utility charging current (2A to 20A).
• Program 12: Setting voltage point back to utility source when selecting "SBU priority" or "Solar first" in program 01 (42V to 51V, and percentage options).
• Program 13: Setting voltage point back to battery mode when selecting "SBU priority" or "LIP" or "LIL" in program 05 (Battery fully charged, 48V to 58V, and percentage options).
• Program 16: Charger source priority (Solar first, Solar and Utility, Only Solar).
• Program 18: Alarm control (Alarm on, Alarm off).
• Program 19: Auto return to default display screen (Enable, Disable).
• Program 20: Backlight control (On, Off).
• Program 22: Beeps while primary source is interrupted (Alarm on, Alarm off).
• Program 23: Overload bypass (Disable, Enable).
• Program 25: Record Fault code (Enable, Disable).
• Program 26: Bulk charging voltage (C.V voltage) (48.0V to 61.0V).
• Program 27: Floating charging voltage (48.0V to 61.0V).
• Program 29: Low DC cut-off voltage (40.0V to 48.0V).
• Program 30: Battery equalization (Enable, Disable).
• Program 31: Battery equalization voltage (48.0V to 61.0V).
• Program 33: Battery equalized time (5min to 900min).
• Program 34: Battery equalized timeout (5min to 900 min).
• Program 35: Equalization interval (0 to 90 days).
• Program 36: Equalization activated immediately (Enable, Disable).
• Program 37: GRID-tie operation (Off grid, Hybrid).
• Program 38: GRID-tie current (10A to 160A).
• Program 39: Led pattern light (Off, On).
• Program 41: Dual output (Disable, Enable).
• Program 42: Enter the power point of dual output function (5% to 30%).
• Program 43: BMS Communication address 48-70 setting.
• Program 44: Delayed grid access (Disable, Enable).
• Program 45: Maximum Second Load (20%~70%).

5.5 Display Setting

The LCD display information will be switched in turns by pressing the "UP" or "DOWN" key. The selectable information is switched as below order: input voltage, input frequency, PV voltage, charging current, charging power, battery voltage, output voltage, output frequency, load percentage, load in Watt, load in VA, load in Watt, DC discharging current, main CPU Version.

Example Display Screens:

5.6 Operating Mode Description

The inverter supports various operating modes, including Standby, Line, and Grid-Tie Operation. The LCD display will show different information based on the current mode and system status.

Lithium Battery Communication Display (LIC/LIP/LIL modes):

When using lithium batteries with communication, the LCD provides detailed information about the battery status.

5.7 Battery Equalization Description

The equalization function is added to the charge controller. It reverses the buildup of negative chemical effects like stratification, a condition where acid concentration is greater at the bottom of the battery than at the top. Equalization also helps to remove sulfate crystals that might have built up on the plates. If left unchecked, this condition, called sulfation, will reduce the overall capacity of the battery. Therefore, it's recommended to equalize the battery periodically.

How to Apply Equalization Function:

You must enable the battery equalization function in monitoring LCD setting program 30 first. Then, you may apply this function in the device by either one of the following methods:

1. Setting equalization interval in program 35.
2. Active equalization immediately in program 36.

When to Equalize:

In the float stage, when the setting equalization interval (battery equalization cycle) is arrived, or equalization is active immediately, the controller will start to enter the Equalize stage.

Equalize charging time and timeout:

In the Equalize stage, the controller will supply power to charge the battery as much as possible until the battery voltage raises to the battery equalization voltage. Then, constant-voltage regulation is applied to maintain the battery voltage at the battery equalization voltage. The battery will remain in the Equalize stage until the setting battery equalized time is arrived.

However, in the Equalize stage, when the battery equalized time is expired and the battery voltage doesn't rise to the battery equalization voltage point, the charge controller will extend the battery equalized time until the battery voltage achieves the battery equalization voltage. If the battery voltage is still lower than the battery equalization voltage when the battery equalized timeout setting is over, the charge controller will stop equalization and return to the float stage.

5.8 Mains and lithium battery activation function

1. After 90s of mains power connection to the inverter, the machine is connected to the mains and starts to work.
2. The inverter is in lithium battery mode (item 05 is LIP or LIL). After the mains is connected, the battery is not connected, and the mains activation function is automatically enabled.

5.9 Fault Reference Code

Battery Fault Codes (Lithium Battery Mode):

5.10 Warning Indicator

Added Battery Warning Codes (Lithium Battery Mode):

6. Clearance and Maintenance for Anti-Dust Kit

6.1 Overview

Every inverter is already installed with an anti-dust kit from the factory. The inverter will automatically detect this kit and activate an internal thermal sensor to adjust the internal temperature. This kit also keeps dust from your inverter and increases product reliability in harsh environments.

6.2 Clearance and Maintenance Steps

1. Loosen the screw in a counterclockwise direction on the top of the inverter.
2. The dustproof case can then be removed, and the air filter foam taken out as shown in the diagram below.
3. Clean the air filter foam and dustproof case. After cleaning, re-assemble the dust-kit back to the inverter.

NOTICE: The anti-dust kit should be cleaned from dust every one month.

7. Specifications

Table 1 Line Mode Specifications

Output power derating:

When AC input voltage drops to 170V, the output power will be derated.

Table 2 Inverter Mode Specifications

Table 3 Two Load Output Power

Table 4 Charge Mode Specifications

Charging Curve:

MPPT Solar Charging Mode

Table 5 Grid-Tie Operation

Table 6 General Specifications

9. Appendix: Approximate Back-up Time Table

Note:

1. Backup time depends on the quality of the battery, age of battery, and type of battery. Specifications of batteries may vary depending on different manufacturers.
2. The final interpretation right of this product belongs to the company.

8. Troubleshooting

9. User Tips

• Wi-Fi Connectivity: If the inverter's own Wi-Fi app has connection issues, try using a third-party app for monitoring.
• Noise Levels: The inverter's coolers are designed to activate under load, which may produce some noise. This is normal operation.
• Inductive Load Power: Ensure that the starting power of inductive loads is at least three times the inverter's rated power to prevent damage.
• Connection Order: Always connect circuits correctly and install circuit breakers for each circuit. The power-on order should be: Battery ON, Inverter ON, then Photovoltaic, Mains, and Load circuit breakers ON. Switch off in reverse order.

10. Frequently Asked Questions

Q: Can the inverter be installed outdoors?

A: The inverter is suitable for mounting on concrete or other non-combustible surfaces only. The recommended installation position is to be adhered to the wall vertically. While not explicitly stated as outdoor-rated, the manual emphasizes non-combustible surfaces and proper air circulation, suggesting a protected environment if installed outside.

11. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your local dealer or the authorized service center. Only qualified service personnel should attempt repairs. If issues persist after following the troubleshooting guide, return the inverter/charger to your dealer or service center for maintenance.

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