Luxpower ECO Hybrid Inverter User Manual

Information on this Manual

Validity: This manual is valid for the following devices: SNA3000WPV/SNA4000WPV/SNA5000WPV.

Scope: This manual provides the installation, operation, and troubleshooting of this unit. Please read this manual carefully before installations and operations.

Target Group: For qualified persons and end users. Qualified persons and end users must have the following skills:

• Knowledge about this unit operation.
• Training in dealing with security issues associated with installations and electrical safety.
• Training in the installation and commissioning of electrical devices and installations.
• Knowledge of the applicable local standards and directives.

Safety Instructions

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

• All operation and connection need to be operated by qualified persons.
• Before using the unit, read all instructions and cautionary markings on the unit. Any damage caused by inappropriate operation is not warranted by Luxpower.
• All electrical installation must comply with the local electrical safety standards.
• 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. Do not open inverter cover or change any components without Luxpower's authorization, otherwise the warranty commitment for the inverter will be invalid.
• 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.
• 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.
• NEVER charge a frozen battery.
• For optimum operation of this unit, please follow required specifications to select appropriate cable size and breaker.
• 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.
• GROUNDING INSTRUCTIONS: This unit should be connected to a permanent grounded wiring system. Be sure to comply with local requirements and regulations to install this inverter.
• NEVER cause AC output and DC input to short circuit. Do not connect to the mains when DC input is short-circuited.

1. Brief Introduction

1.1 Features of the inverter

The SONAR series is a multifunctional, high-frequency pure sine wave ECO Hybrid inverter solar inverter, featuring:

• Applicable for pure off-grid inverter, backup power, self-consumption, or on-grid situations.
• Integrated with 2 MPPT solar charge controllers, MPPT voltage range 120V~385V.
• Rated power 5KW, power factor 1.
• Able to run with or without a battery in on-grid and off-grid mode.
• With a separated generator input interface, able to control the generator remotely.
• Solar and utility grid can power loads at the same time.
• With integrated advanced parallel function, up to 10 units can be paralleled.
• Support CAN/RS485 for Li-ion battery BMS communication.
• WIFI/GPRS remote monitoring, setting, and firmware update, supporting website, free iOS/Android APP.

System connection overview:

• Solar Panel
• Utility Grid
• Generator
• Battery
• Wifi/4G
• Internet
• Luxpower Server
• Luxpower View
• Home Loads

1.2 Interface of the inverter

LCD display: Shows system information and allows for settings adjustments.

Function buttons: UP, Down, Return, Enter for navigation and selection.

Fault/Warning Status indicator: Red light indicates a fault or warning.

Normal Status indicator: Green light indicates normal operation.

Terminal Connections:

• BAT+/BAT-: Battery positive and negative terminals.
• MPPT485, Li-ion, CAN/RS485: Communication ports for battery management systems.
• NTC: For temperature sensing.
• WIFI: For wireless connectivity.
• PV A+/PV A-, PV B+/PV B-: Solar panel input terminals.
• AC INPUT (L, N, PE): Connection for AC power input.
• AC OUTPUT (L, N, PE): Connection for AC power output.
• GEN (L, N): Generator input connection.
• Dry Port (NO2, COM2, NC2): For dry contact signal control.
• GEN (NO1, COM1, NC1): For generator control.
• Parallel BAT+/BAT-: Terminals for parallel battery connection.
• EPS Output (L, N): Emergency Power Supply output.
• Power on/off switch.
• Circuit breaker connections.
• Parallel communication resistor switch.
• EPS on/off switch.
• Parallel communication ports.

1.3 Packing List

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

• ECO Hybrid inverter X1
• User Manual X1
• Expansion Screw and Tube X4
• Wi-Fi Module X1
• Cross Head Screw X5 / Nut X2

Storing the Inverter

The inverter must be stored appropriately if not installed immediately. Refer to the figure below.

CAUTION!

• The inverter and its components must be stored in their original packaging.
• The storage temperature should be within -25~60°C and humidity within 0~85%.
• The packing should be upright and maximum stacked layers is 6.
• Do not directly expose the inverter and its packaging to sunshine, raindrops, and keep away from corrosion.

Storage conditions: Temperature < 60°C, Humidity < 85%, Height < 2m.

2. Installation

2.1 Preparation

The system connection is shown in the diagram. Please prepare the breakers and cables in advance before installation.

Breaker Specifications:

• QF 1: In ≥ 63A
• QF 2: In ≥ 63A
• QF 3: In ≥ 140A
• QF 2 is a Double interlock switch or Dual Power Switch, In ≥ 63A.

2.2 Mounting the Unit

Notice: Consider the following points before selecting where to install:

• Mount on a solid surface.
• Do not mount the inverter on flammable construction materials.
• For proper air circulation to dissipate heat, allow a clearance of approximately 20 cm to the side and approximately 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.

Steps to mounting the unit:

1. Use the wall-mounting bracket as a template to mark the position of the 4 holes, then drill 8 mm holes and ensure the depth of the holes is deeper than 50mm.
2. Install the expansion tubes into the holes and tighten them, then use the expansion screws (packaged together with the expansion tubes) to install and fix the wall-mounting bracket on the wall.
3. Install the inverter on the wall-mounting bracket and lock the inverter using the security screws.

Dimensions: 519 mm (Height) x 180 mm (Width) x 500 mm (Depth). Clearance: 200 mm on sides, 500 mm above and below.

2.3 Battery Connection

2.3.1 Battery Power Cable Connection

Note: For lead-acid batteries, the recommended charge current is 0.2C (C = battery capacity).

1. Please follow the steps below to implement battery connection.
2. Assemble battery ring terminals based on recommended battery cable and terminal size.
3. Connect all battery packs as the unit requires. It is suggested to connect at least a 200Ah capacity battery for the SNA5000WPV.
4. Insert the ring terminal of the battery cable flatly into the battery connector of the inverter and make sure the bolts are tightened with a torque of 2~3 Nm. Make sure the polarity of the battery is correctly connected and ring terminals are tightly screwed to the battery terminals.

2.3.2 Lithium Battery Connection

If choosing a lithium battery for the SNA5000WPV, please ensure the battery BMS is compatible with the Luxpower inverter. Please check the compatible list on the Luxpower website.

1. Connect the power cable between the inverter and the battery.
2. Connect the CAN or RS485 communication cable between the inverter and the battery. If you do not have the communication cable from the inverter manufacturer or battery manufacturer, please make the cable according to the PIN definition.
3. Lithium battery configuration: To communicate with the battery BMS, you should set the battery type to "Li-ion" in Program "03" via the LCD and choose the correct battery brand (for details, please check the LCD setting chapter). Users can also choose the battery type and brand via the monitor system.

Communication Port Pin Definitions:

Battery Pack Connections:

Parallel connections are shown for the inverter and battery pack.

2.4 AC Input/Output Connection

CAUTION!!

There are two terminal blocks with "IN" and "OUT" markings. Please do NOT mix up input and output connectors.

Be sure to connect AC wires with correct polarity. If L and N wires are connected reversely, it may cause utility short-circuit when these inverters are worked in parallel operation.

Please follow below steps to implement AC input/output connection:

1. Before making AC input/output connection, be sure to open the DC protector or disconnect it first.
2. Remove insulation sleeve 10mm for six conductors. Shorten phase L and neutral conductor N by 3mm.
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 first.
4. Insert AC output wires according to polarities indicated on the terminal block and tighten the terminal screws. Be sure to connect the PE protective conductor first.
5. Make sure the wires are securely connected.

Wire identification: Ground (yellow-green), L-LINE (brown or black), N-Neutral (blue).

2.5 PV Connection

Please follow below steps to implement PV module connection:

1. Remove insulation sleeve 10 mm for positive and negative conductors.
2. Check correct polarity of connection cables from PV modules and PV input connectors.
3. 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. Make sure the wires are securely connected.
5. Finally, after connecting all wiring, please put the bottom cover back by screwing two screws as shown below.

2.6 Generator Connection

CAUTION: Before making Generator connection, be sure to open the DC protector or disconnect it first.

1. Remove insulation sleeve 10mm for 2 conductors.
2. Insert L and N wires according to polarities indicated on the terminal block and tighten the terminal screws.

2.7 Dry Contact Signal control

The Dry port (NO2, COM2, NC2) can be used to deliver a signal to an external device when the battery voltage reaches a warning level. The GEN port (NO1, COM1, NC1) can be used to wake up the generator, and then the generator can charge the battery.

Notice: NO = Normal open. Dry Port Relay Maximum Specification: 250VAC 5A. Gen Port Relay Maximum Specification: 250VAC 5A.

2.8 Parallel function

SNA series inverters support up to 10 units to compose single-phase parallel systems or three-phase parallel systems. For parallel system setup:

Step 1: Cable connection: The system connection is as below. Cannot share PV input at any time!

Step 2: Please put the CAN communication PIN to ON status for the first and the end inverter.

Step 3: Setup the monitor for the system, add all datalogs in one station. Users can login to the visit interface of the monitor system, Configuration -> Station -> Plant Management -> Add Datalog to add the datalogs.

Step 4: Enable shared battery for the system if the system shares one battery bank, otherwise disable the shared battery function.

Step 5: Set the system as a parallel group in the monitor system.

For more detailed guidance for paralleling systems, please visit https://www.luxpowertek.com/download/ and download the guidance.

2.9 Power and EPS ON/OFF

1. Power Switch: Controls power supply for the unit.

2. EPS Output Switch: Used to control the AC output.

After connection, please turn on both switches. Users can turn off the EPS output switch to turn off the power supply in an emergency case.

3. Working modes

3.1 ECO Hybrid inverter modes introduction:

3.2 Working Modes related setting description

4. LCD Display and settings

4.1 LED Display

Buttons: Return, UP, Down, Enter.

4.2 LCD Display

4.3 Inverter Status Display

Various status displays are shown, including Normal status, Warning status, Fault status, and Flash status (download percent).

When display 'GRIDA', it means the Grid information is about AC utility. The percent display on the right down corner means the load percentage.

When display 'GRIDB', it means the AC information is about Genset input.

4.4 LCD Settings

There are four buttons on the LCD: Return, UP, Down, Enter.

Step 1: After touching the Enter button for about 2 seconds, the unit will enter setting mode. The setting icon and index will be flashing.

Step 2: Touch UP or Down button to select the setting index from 1 to 19.

Step 3: Touch Enter button to set this item.

Step 4: Touch UP or Down button to change the settings.

Step 5: Touch Enter to confirm the setting or Return to the setting list.

5. Monitor System for ECO Hybrid inverter

Users can use a Wi-Fi dongle / WLAN dongle / 4G dongle (available from March 2021 for some countries) to monitor the energy storage system. The monitor website is: server.luxpowertek.com

The APP is also available in the Google Play and Apple APP store (Scan QR code to download the APP).

Please download the introduction of guidance by website: https://www.luxpowertek.com/download/

Document Reference:

• 1. Wifi Quick Guidance: Quick guidance for setting the password for the Wi-Fi module. The paper is also available in the Wi-Fi box.
• 2. Monitor system setup for Distributors and Monitor system setup for end-users: Monitor system registration, Wi-Fi password setting, and Wi-Fi local monitor and setting.
• 3. Lux_Monitor_UI_Introduction: Introduction of monitor interface.
• 4. WebsiteSetting Guidance: Introduction of website settings for off-grid inverter.

Local Monitor:

• Solar Yielding: 0.0 kWh
• Today Yielding: 300.8 kWh
• Total Yielding: 9532004127
• Feed-in Energy: 0.0 kWh
• Today Export: 77.1 kWh
• Total Export: 0.0 kWh
• Battery Discharging: 0.0 kWh
• Today Discharging: 50.1 kWh
• Total Discharging: 0.0 kWh
• Consumption: 0.0 kWh
• Today Usage: 255.3 kWh
• Total Usage: 0.0 kWh
• PV Power: 0 W
• Battery Level (SOC): 0%
• EPS: Backup Power (EPS): 0 W
• Notice: PV Power, EPS

6. Specifications

Table 1 Line Mode Specifications

Table 2 Inverter Mode Specifications

Table 3 Charge Mode Specifications

Battery Voltage Range:

• 46.4V-60V(Li) / 38.4V-60V(Lead_Acid)
• High DC Cut-off Voltage: 59VDC(Li) / 60VDC(Lead_Acid)
• High DC Recovery Voltage: 57.4VDC(Li) / 58VDC(Lead_Acid)
• Low DC Warning Voltage: 44.0Vdc (Settable) (load < 20%)
• Warning Voltage @load < 20% -1.2V (load < 20%)
• Warning Voltage @load < 20% -3.6V (load ≥ 50%)
• Low DC Warning Return Voltage: Low DC Warning Voltage@Different load +2V
• Low DC Cut-off Voltage: 42.0Vdc(Settable)
• Low DC Cut-off Return Voltage: Cut-off Voltage @load < 20% -1.2V
• Low DC Warning SOC: 20% SOC (Settable)
• Low DC Warning Return SOC: Low DC Warning SOC +10%
• Low DC Cut-off SOC: 15% SOC (Grid on) (settable)
• Low DC Cut-off Return SOC: Low DC Cut-off SOC +10%
• Charge Cut-off Voltage: 58.4Vdc
• No Load Power Consumption: <60W

MPPT Solar Charging Mode:

• Max. PV Array Power: 3200W*2
• Start-up Voltage: 100Vdc±10Vdc
• PV Array MPPT Voltage Range: 120Vdc~385Vdc
• Max. PV Array Open Circuit Voltage: 480Vdc
• Max. PV Charging Current: 110A
• Max. Charging Current (AC Charger Plus Solar Charger): 110A

Table 4 General Specifications

7. Trouble Shooting & Error List

The failures are mainly divided into 5 categories, for each category, the behavior is different: