User Manual: 1.0KW/1.5KW Inverter / MPPT SCC / AC Charger

1 About This Manual

1.1 Purpose

This manual describes the assembly, installation, operation, and troubleshooting of this unit. 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.

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 installation procedure when you want to disconnect AC or DC terminals. Please refer to INSTALLATION section of this manual for the details.
10. 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.
11. NEVER cause AC output and DC input short-circuited. Do NOT connect to the mains when DC input short circuits.
12. Warning!! Only qualified service persons are able to service this device. If errors still persist after following troubleshooting table, please send this inverter/charger back to local dealer or service center for maintenance.

3 Introduction

This is a multi-function inverter/charger, combining functions of inverter, solar charger, and battery charger to offer uninterruptible power support with portable size. Its comprehensive LCD display offers user-configurable and easy-accessible button operation such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.

3.1 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 to 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

3.2 Basic System Architecture

The following illustration shows the basic application for this inverter/charger. It also includes the following devices to have a complete running system:

• Generator or Utility.
• 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.

Figure 1 Hybrid Power System Diagram: The diagram illustrates a hybrid power system. On the left, inputs are shown: Solar Power, Generator, and Utility power. These connect to the central Inverter unit. The Inverter is also connected to an External Battery. On the right, the Inverter outputs power to Home Appliances.

Product Overview Diagram: The diagram shows the front and side views of the inverter unit. The front panel features:

• 1. LCD display
• 2. Status indicator LEDs (AC/INV, CHG, FAULT)
• 3. Charging indicator
• 4. Fault indicator
• 5. Function buttons (ESC, UP, DOWN, ENTER)
• 6. Power on/off switch

The rear panel shows:

• 7. AC input terminals
• 8. AC output terminals
• 9. PV input terminals
• 10. Battery input terminals
• 11. Circuit breaker
• 12. Output receptacles

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:

• The unit x 1
• User manual x 1

4.2 Preparation

Before connecting all wirings, please take off the bottom cover by removing two screws.

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 to allow the LCD display to be read at all times.
• For proper air circulation to dissipate heat, allow a clearance of approximately 20 cm to the sides 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.
• Be sure to keep other objects and surfaces as shown in the diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.

Mounting Clearance Diagram: Arrows indicate required clearances around the unit: 20cm to the left, 20cm to the right, 50cm above, and 50cm below.

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

Install the unit by screwing two screws. It is 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 the battery and inverter. It may not be requested in some applications, however, it's still requested to have over-current protection installed. Please refer to the typical amperage in the table below for 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. It is suggested 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.
4. Insert the battery wires flatly into the 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 (+) is connected to positive (+) and negative (-) is connected to negative (-).

Battery Wiring Diagram: Two diagrams illustrate battery connections for a 1.0KW 12V inverter and a 1.5KW 24V inverter, showing series connections of 12V batteries.

Terminal Connection Diagram: Illustrates connecting wires to the inverter's battery terminals.

4.5 AC Input/Output Connection

CAUTION!! Before connecting to the 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 the AC breaker is 20A for 1.0 KW and 20A for 1.5 KW.

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 10 mm 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 (⊚) first.

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

AC Wiring Diagram: Shows connection of Ground (yellow-green), Line (brown or black), and Neutral (blue) wires to the AC input terminals. Also shows the connection to an external circuit breaker.

4. Then, insert AC output wires according to polarities indicated on the terminal block and tighten terminal screws.

Wire Color Coding:

• PE: Ground (yellow-green)
• L: LINE (brown or black)
• N: Neutral (blue)

AC Output Connection Diagram: Shows connection of wires to the AC output terminals.

5. Make sure the wires are securely connected.

CAUTION: Appliances such as air conditioners are required to have at least a 2-3 minute delay before restarting to allow refrigerant gas inside the circuits to balance. If a power shortage occurs and recovers in a short time, it may cause damage to your connected appliances. To prevent this kind of damage, check with the appliance manufacturer if it is equipped with a time-delay function before installation. Otherwise, this inverter/charger will trigger an overload fault and cut off output to protect your appliance, but this may still cause internal damage to the air conditioner.

4.6 PV Connection

CAUTION: Before connecting to PV modules, please install a separate 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.

PV Module Selection:

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

1. Open circuit Voltage (Voc) of PV modules must not exceed 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.

PV Module Configuration Example (using 250Wp PV module):

PV Module Wire Connection:

1. Remove insulation sleeve 10 mm for positive and negative conductors.
2. It is suggested to put bootlace ferrules on the end of positive and negative wires with a proper crimping tool.
3. Check correct polarity of wire connection from PV modules and PV input connectors. Then, connect the positive pole (+) of the connection wire to the positive pole (+) of the PV input connector. Connect the negative pole (-) of the connection wire to the negative pole (-) of the PV input connector.

Recommended tool: 4 mm blade screwdriver

PV Input Terminal Connection Diagram: Shows connecting PV wires to the inverter's PV input terminals, emphasizing correct polarity.

4.7 Final Assembly

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

5 Operation

5.1 Power ON/OFF

Side view of unit: Shows the location of the power switch on the bottom of the unit.

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

5.2 Operation and Display Panel

The operation and display panel, shown in the chart below, 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.

Display Panel Diagram: Shows the LCD screen with various icons and readouts, including input/output power, battery status, and system mode (BYPASS, ECO, CHARGING). Also shows the function buttons and indicator LEDs.

LED Indicator

Function Keys

5.3 LCD Setting

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

Setting Programs:

5.4 Fault Reference Code

5.5 Warning Indicator

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

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 the 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 (Option)

1. Step 1: Please remove screws as shown in the diagram.
2. Step 2: Then, the dustproof case can be removed, and the air filter foam can be taken out as shown in the chart below.
3. Step 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.

Dust Kit Removal Diagram: Shows the side of the inverter and arrows indicating where to remove screws to detach the dustproof case and access the air filter foam.

7 Specifications

Table 1 Line Mode Specifications

Table 2 Inverter Mode Specifications

Table 3 Charge Mode Specifications

Table 4 General Specifications