Anern AN-SCI-ECO-3200 Hybrid Solar Inverter User Manual

1. Introduction

This manual describes the assembly, installation, operation, and troubleshooting of your Anern AN-SCI-ECO-3200 Hybrid Solar Inverter. This multi-function inverter/charger combines the functions of an inverter, solar charger, and battery charger to provide uninterruptible power support. Its comprehensive LCD display allows for user-configurable settings such as battery charging current, AC/solar charger priority, and acceptable input voltage ranges.

Please read this manual carefully before installation and operation, and keep it for future reference. For a complete digital version of this manual, please refer to the User Manual (PDF).

1.1 Product Overview

The Anern AN-SCI-ECO-3200 is a pure sine wave hybrid solar inverter designed for off-grid applications. It features a 3.2KW rated output power, 24Vdc nominal DC input voltage, and an 80A MPPT solar charger. It is compatible with various household appliances and offers multiple protection features.

1.2 Key Features

• Pure sine wave inverter
• Configurable input voltage range for home appliances and personal computers
• Configurable battery charging current based on applications
• Configurable AC/Solar Charger priority
• Compatible with mains voltage or generator power
• Auto restart while AC is recovering
• Overload, Over temperature, and Short circuit protection
• Smart battery charger design for optimized battery performance
• Cold start function
• WIFI/GPRS (Optional)
• Can connect to lithium battery

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 the 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 the 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 a battery.
6. NEVER charge a frozen battery.
7. For optimum operation, select appropriate cable sizes as per specifications.
8. Be very cautious when working with metal tools on or around batteries. Dropping a tool can cause sparks or short circuits, leading to explosions.
9. Strictly follow installation procedures when disconnecting AC or DC terminals.
10. A 150A fuse is provided for over-current protection for the battery supply.
11. GROUNDING INSTRUCTIONS: This inverter/charger should be connected to a permanent grounded wiring system. Comply with local requirements and regulations.
12. NEVER short circuit AC output and DC input. 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 persist after troubleshooting, send this inverter/charger back to the local dealer or service center.

3. Setup and Installation

3.1 Unpacking and Inspection

Before installation, inspect the unit. Ensure nothing inside the package is damaged. You should have received:

• The inverter unit x 1
• User manual x 1

Watch the unboxing video for a visual guide:

3.2 Pre-Purchase Instructions & Inverter Use Notice

Thank you for choosing our inverter. To ensure a better product experience, please understand the following information before purchasing and using:

• The total power of electrical appliances in use that the inverter can withstand cannot exceed the rated power.
• For electrical appliances with inductive loads (e.g., air conditioners, refrigerators, induction cookers, water pumps), their starting power is at least 3 times the rated power. Be careful when starting these appliances.
• The voltage of the solar panel connected to the inverter needs to meet specific requirements: Open circuit voltage (Voc) of PV modules must not exceed max. PV array open circuit voltage of the inverter. Open circuit voltage (Voc) of PV modules should be higher than min. battery voltage.
• The connection of solar panel, battery, and mains to the inverter must use cable specifications that meet the requirements. Refer to the manual for detailed specifications.
• A circuit breaker must be connected before the solar panels, batteries, and mains electricity are connected to the inverter. Refer to the manual for detailed specifications.

Inverter Use Notice:

1. The starting power of inductive load electrical appliances shall be at least three times of the rated power of the electrical appliances. If the starting power exceeds the inverter power, the inverter may be damaged. Please select a suitable model before purchasing.
2. Please connect the circuit correctly according to the instructions, and install switches for each circuit.
3. Starting sequence: first turn on the battery switch, start the inverter, and turn on the PV, mains, and load switches.
4. Shutdown sequence: turn off the switches of load, PV, and mains, turn off the inverter, and finally turn off the battery.

3.3 Mounting the Unit

Consider the following points when selecting where to install the inverter:

• Do not mount the inverter on flammable construction materials.
• Mount on a solid surface.
• Install this inverter at eye level for easy LCD display readability.
• For proper air circulation, allow a clearance of approx. 20 cm to the sides and approx. 50 cm above and below the unit.
• The ambient temperature should be between 0°C and 55°C for optimal operation.
• The recommended installation position is vertically on the wall.
• Ensure sufficient heat dissipation and space for wiring.

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

Install the unit by screwing two screws. M4 or M5 screws are recommended.

3.4 System Diagram

The inverter can power various appliances in home or office environments. A typical system includes solar panels, batteries, and household loads, with an option for generator or utility input.

3.5 Wiring Diagram

Proper wiring is crucial for the safe and efficient operation of your solar power system. Always ensure all connections are secure and follow local electrical codes.

3.6 Battery Connection

CAUTION: For safety and compliance, install a separate DC over-current protector or disconnect device between the battery and inverter. All wiring must be performed by qualified personnel.

Recommended battery cable size for 3.2KVA 24V model: 1 x 6AWG (14 mm²) with a torque value of 2 Nm.

1. Remove insulation sleeve 18 mm for positive and negative conductors.
2. Use bootlace ferrules on wire ends with a proper crimping tool.
3. Connect all battery packs as per the diagram, ensuring correct polarity (positive to positive, negative to negative).
4. Insert battery wires into inverter connectors and tighten bolts to 2 Nm.

3.7 AC Input/Output Connection

CAUTION: Install a separate AC breaker between the inverter and AC input power source. Recommended AC breaker for 3.2KVA is 32A. Do NOT mis-connect input and output connectors.

Recommended AC cable size for 3.2KVA 24V model: 12 AWG with a torque value of 1.2 Nm.

1. Before connecting, open DC protector or disconnector.
2. Remove 10mm insulation sleeve for conductors.
3. Insert AC input wires according to polarities (Ground: yellow-green, Line: brown/black, Neutral: blue) and tighten terminals.
4. Insert AC output wires according to polarities (Line: brown/black, Neutral: blue) and tighten terminals.

3.8 PV Connection

CAUTION: Install a separate DC circuit breaker between the inverter and PV modules. All wiring must be performed by qualified personnel.

Recommended PV cable size: 1x16AWG with a torque value of 1.2 Nm.

PV Module Selection:

• Open circuit Voltage (Voc) of PV modules must not exceed max. PV array open circuit voltage of inverter (400Vdc).
• Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.
• PV Array MPPT Voltage Range: 30Vdc-400Vdc.

For example, with 250Wp PV modules (Voc: 37.7Vdc), you would need 8 modules in series for 2000W total input power.

1. Remove 10mm insulation sleeve for positive and negative conductors.
2. Use bootlace ferrules on wire ends with a proper crimping tool.
3. Check correct polarity and connect positive to positive, negative to negative.

3.9 Final Assembly

After connecting all wirings, put the bottom cover back by screwing four screws.

4. Operating the Inverter

4.1 Product Overview and Connections

4.2 Power ON/OFF

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

4.3 Operation and Display Panel

The front panel includes three indicators, four function keys, and an LCD display to show operating status and power information.

• LED Indicators:
  • AC/INV (Green): Solid On (Output by utility), Flashing (Output by battery/PV).
  • CHG (Green): Solid On (Battery fully charged), Flashing (Battery charging).
  • FAULT (Red): Solid On (Fault occurs), Flashing (Warning condition).
• Function Keys:
  • ESC: Exit setting mode.
  • UP: Go to previous selection.
  • DOWN: Go to next selection.
  • ENTER: Confirm selection or enter setting mode.

4.4 LCD Display Icons

The LCD displays various icons for input source information (AC, PV, Input/Battery voltage), configuration programs, fault information, output information (voltage, frequency, load), and battery information (charge level, charging status).

4.5 LCD Settings

Press and hold the ENTER button for 3 seconds to enter setting mode. Use UP/DOWN to select programs and ENTER to confirm or ESC to exit. Key settings include:

• Program 00: Exit setting mode.
• Program 01: Output Source Priority: Configure how loads are powered (Utility first, Solar first, SBU priority).
• Program 02: Maximum Charging Current: Set total charging current for solar and utility chargers (10A, 20A, 30A, 40A, 50A, 60A, 70A, 80A).
• Program 03: AC Input Voltage Range: Set acceptable AC input voltage range (Appliances: 90-280VAC, UPS: 170-280VAC).
• Program 05: Battery Type: Select battery type (AGM, Flooded, User-Defined).
• Program 06/07: Auto Restart: Enable/disable auto restart after overload or over temperature.
• Program 09/10: Output Frequency/Voltage: Set output frequency (50Hz/60Hz) and voltage (220V, 230V, 240V).
• Program 11: Maximum Utility Charging Current: Set current drawn from utility for charging.
• Program 12/13: Voltage Point Back to Utility/Battery: Set voltage thresholds for switching back to utility or battery source.
• Program 16: Charger Source Priority: Configure charger source (Solar first, Solar and Utility, Only Solar).
• Program 18: Alarm Control: Enable/disable audible alarms.
• Program 19: Auto Return to Default Display Screen: Enable/disable auto return to default display.
• Program 20: Backlight Control: Turn backlight on/off.
• Program 22: Beeps while Primary Source is Interrupted: Enable/disable beeps.
• Program 23: Overload Bypass: Enable/disable transfer to line mode on overload.
• Program 26: Bulk Charging Voltage (C.V voltage): Set bulk charging voltage (e.g., 28.2V for 24V system).
• Program 27: Floating Charging Voltage: Set floating charging voltage (e.g., 27.0V for 24V system).
• Program 29: Low DC Cut-off Voltage: Set low DC cut-off voltage (e.g., 20.0V for 24V system).
• Program 30: Battery Equalization: Enable/disable battery equalization.

4.6 Operating Mode Description

• Standby Mode / Power Saving Mode: No output, but can charge batteries.
• Fault Mode: Errors due to internal circuit issues or external reasons (over temperature, short circuit). PV energy and utility can still charge batteries.
• Line Mode: Unit provides output power from mains and charges battery.
• Battery Mode: Unit provides output power from battery and PV power.

5. Maintenance

5.1 Clearance and Maintenance for Anti-Dust Kit (Optional)

Every inverter is installed with an anti-dust kit from the factory. This kit helps keep dust out and increases product reliability.

1. Remove screws to detach the dustproof case.
2. Take out the air filter foam.
3. Clean the air filter foam and dustproof case.
4. Re-assemble the dust-kit back to the inverter.

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

5.2 Battery Equalization

Battery equalization reverses negative chemical effects like stratification and removes sulfate crystals, which can reduce battery capacity. It is recommended to equalize batteries periodically.

To apply equalization:

1. Enable battery equalization in LCD setting program 30.
2. Set equalization interval in program 35, or activate immediately in program 36.

6. Troubleshooting

6.1 Fault Reference Code

The inverter displays specific codes for various faults:

• 01: Fan is locked when inverter is off.
• 02: Over temperature.
• 03: Battery voltage is too high.
• 04: Battery voltage is too low.
• 05: Output short circuited or over temperature detected.
• 06: Output voltage is too high.
• 07: Overload time out.
• 08: Bus voltage is too high.
• 09: Bus soft start failed.
• 51: Over current or surge.
• 52: Bus voltage is too low.
• 53: Inverter soft start failed.
• 55: Over DC voltage in AC output.
• 57: Current sensor failed.
• 58: Output voltage is too low.
• 59: PV voltage is over limitation.

6.2 Warning Indicator

Warnings are indicated by codes and audible alarms:

• 01: Fan is locked when inverter is on (Beep three times every second).
• 03: Battery is over-charged (Beep once every second).
• 04: Low battery (Beep once every second).
• 07: Overload (Beep once every 0.5 second).
• 10: Output power derating (Beep twice every 3 seconds).
• 15: PV energy is low (Beep twice every 3 seconds).
• E9: Battery equalization (No audible alarm).

6.3 Troubleshooting Table

7. Specifications

Below are the detailed specifications for the Anern AN-SCI-ECO-3200 Hybrid Solar Inverter.

7.1 General Specifications (AN-SCI-ECO-3200)

• Brand Name: ANERN
• Model Number: AN-SCI-ECO-3200
• Rated Power: 3200W
• Input Voltage: 24VDC
• Output Voltage: 220V/230V/240VAC
• Output Frequency: 50HZ/60HZ
• Output Type: SINGLE
• Wave Form: Pure sine wave
• Maximum Charge Current: 80A (MPPT)
• Maximum PV Array Open Circuit Voltage: 400VDC
• MPPT Voltage Range: 30-400VDC
• Transfer Time: 10 ms (For Personal Computers)
• Is Smart Device: Yes
• Certification: CE
• Operating Temperature: -10°C to 50°C
• Storage Temperature: -15°C to 60°C
• Humidity: 5% to 95% Relative Humidity (Non-condensing)
• Dimensions (D*W*H): 390*270*100mm
• Net Weight: 5.4 kg

7.2 Line Mode Specifications

• Input Voltage Waveform: Sinusoidal (utility or generator)
• Nominal Input Voltage: 230Vac
• Low Loss Voltage: 170Vac±7V (UPS); 90Vac±7V (Appliances)
• High Loss Voltage: 280Vac±7V
• Nominal Input Frequency: 50Hz/60Hz (Auto sensing)
• Efficiency (Line Mode): >95%
• Transfer Time: 10ms typical (UPS); 20ms typical (Appliances)

7.3 Inverter Mode Specifications

• Rated Output Power: 3200VA/3000W
• Output Voltage Waveform: Pure Sine Wave
• Output Voltage Regulation: 230Vac±5%
• Peak Efficiency: 94%
• Overload Protection: 5s@ >150% load; 10s@ 100%~150% load
• Surge Capacity: 2* rated power for 5 seconds
• Nominal DC Input Voltage: 24Vdc
• Low DC Warning Voltage: 22.0Vdc (@load <50%)
• Low DC Cut-off Voltage: 20.5Vdc (@load <50%)
• No Load Power Consumption: <35W

7.4 Charge Mode Specifications

• AC Charging Current (Max): 60Amp
• Bulk Charging Voltage (Flooded Battery): 29.2V
• Bulk Charging Voltage (AGM/Gel Battery): 28.2V
• Floating Charging Voltage: 27Vdc
• Max. PV Array Power: 3000W
• Max Charging Current (AC charger plus solar charger): 80Amp

8. User Tips

• Battery Connection: Always ensure your battery bank is correctly sized for your inverter and load requirements. Use appropriate cable gauges to minimize voltage drop and ensure efficient power transfer.
• Load Management: Be mindful of the starting power of inductive loads. If you frequently use high-surge appliances, consider a model with higher surge capacity or manage your appliance usage to avoid overloading the inverter.
• System Monitoring: Regularly check the LCD display for operational status, fault codes, and battery charge levels to ensure optimal system performance and identify potential issues early.
• Ventilation: Ensure the inverter is installed in a well-ventilated area to prevent overheating, which can reduce its lifespan and efficiency.
• Regular Cleaning: Clean the anti-dust kit and air vents monthly to maintain proper airflow and prevent dust buildup.

9. Warranty and Support

For warranty information, technical support, or service inquiries, please contact your original seller or the manufacturer directly. Keep your purchase records handy when contacting support.