USER MANUAL

ABOUT THIS MANUAL

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.

Scope

This manual provides safety and installation guidelines as well as information on tools and wiring.

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 is 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 procedures when you want to disconnect AC or DC terminals. Please refer to the INSTALLATION section of this manual for the details.
10. 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 to short circuit. Do NOT connect to the mains when DC input is short-circuited.
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 the local dealer or service center for maintenance.

INTRODUCTION

This is a multi-function inverter/charger, combining functions of inverter, MPPT 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.

Features

• Pure sine wave inverter
• Inverter running without battery
• Built-in MPPT solar controller
• 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

Basic System Architecture

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

• Generator or Utility.
• PV modules (option)

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 light, fan, refrigerator, and air conditioner.

[Diagram Description: A central 'Hybrid Solar Inverter' is shown. To its left, connected by red DC lines, are 'Solar power (option)' and 'Generator'. Below 'Generator' is 'Utility', connected by blue AC lines. To the right of the inverter, connected by red DC lines, is 'External Battery packs'. Connected by blue AC lines to the inverter's output are 'Home Appliances'.]

Product Overview

[Diagram Description: The front view of the inverter shows numbered components: 1. LCD display, 2. Status indicator, 3. Charging indicator, 4. Fault indicator, 5. Function buttons, 6. Power on/off switch. The rear view shows numbered ports: 7. Battery negative/positive outlet hole, 8. RS232 communication port (RJ45), 9. RS485 communication port (RJ45), 10. RS232 communication port (DB9), 11. Dry contact port, 12. PV1 input, 13. PV2 input, 14. AC input, 15. AC output, 16. Grounding point.]

Note: RS232 communication port (DB9) and RS232 communication port (RJ45) cannot be used simultaneously; only one can be used at the same time.

INSTALLATION

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
• PV connector x 4
• Battery fuse x 1

Preparation

Before connecting all wirings, please take off the bottom cover by removing four screws as shown below.

[Diagram Description: Shows the inverter unit with the bottom cover detached, indicating four screws to be removed.]

Mounting the Unit

Consider the following points before selecting where to install:

1. Do not mount the inverter on flammable construction materials.
2. Mount on a solid surface.
3. Install this inverter at eye level in order to allow the LCD display to be read at all times.
4. The ambient temperature should be between 0°C and 55°C to ensure optimal operation.
5. The recommended installation position is to be adhered to the wall vertically.
6. Be sure to keep other objects and surfaces as shown in the right diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.

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

[Diagram Description: Shows the inverter unit with recommended clearances: 50cm above, 50cm below, and 20cm on each side for ventilation and wire access.]

Install the unit by screwing three screws. It is recommended to use M4 or M5 screws.

[Diagram Description: Shows the inverter unit with dimensions indicated: 56.4 mm, 290.0 mm, 361.4 mm, and 495.0 mm, with arrows pointing to screw holes for mounting.]

Battery Connection

[Caution] For safety operation and regulation compliance, it is requested to install a separate DC over-current protector or disconnect device between the battery and inverter. It may not be requested to have a disconnect device in some applications; however, it is 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 a qualified personnel.

[Warning] It is 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.

Recommended battery cable, Terminal size:

[Diagram Description: Shows a close-up of a battery terminal connector with dimensions labeled L, W, and D.]

Please follow below steps to implement battery connection:

1. Make positive and negative cables based on recommended terminal size.
2. Connect all battery packs as units require. It's suggested to use recommended battery capacity.
3. Insert battery cable flatly into the battery connector of the inverter and make sure the bolts are tightened with a torque of 10-12Nm. Make sure polarity at both the battery and the inverter/charger is correctly connected and battery cables are tightly screwed to the battery connector.

[Warning] Shock Hazard: Installation must be performed with care due to high battery voltage in series.

[Caution] Do not place anything between the flat part of the inverter terminal; otherwise, overheating may occur.

[Caution] Do not apply anti-oxidant substance on the terminals before terminals are connected tightly.

[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 (-).

AC Input/Output Connection

[Caution] Before connecting to the AC input power source, please install a separate AC breaker between the inverter and AC input power source. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of AC input. The recommended spec of AC breaker is 63A.

[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 a qualified personnel.

[Warning] It is 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

[Diagram Description: Shows a 48V MODEL battery configuration with four 12V batteries connected in series. Arrows indicate the positive and negative connections to the inverter.]

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 disconnector first.
2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm.
3. Insert AC input wires according to polarities indicated on the terminal block and tighten the terminal screws. Be sure to connect PE protective conductor [Ground Symbol] first.
   [Arrow Right] Ground (yellow-green) L [Arrow Right] LINE (brown or black) N [Arrow Right] Neutral (blue)

[Warning] Be sure that AC power source is disconnected before attempting to hardwire it to the unit.

4. Then, insert AC output wires according to polarities indicated on the terminal block and tighten terminal screws. Be sure to connect PE protective conductor [Ground Symbol] first.
   [Arrow Right] Ground (yellow-green) L [Arrow Right] LINE (brown or black) N [Arrow Right] Neutral (blue)
5. Make sure the wires are securely connected.

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

[Caution] Appliances such as air conditioners require at least 2~3 minutes to restart because it's required to have enough time to balance refrigerant gas inside of circuits. If a power shortage occurs and recovers in a short time, it will cause damage to your connected appliances. To prevent this kind of damage, please check the air conditioner manufacturer if it's equipped with a time-delay function before installation. Otherwise, this inverter/charger will trigger overload fault and cut off output to protect your appliance, but sometimes it still causes internal damage to the air conditioner.

[Diagram Description: Shows AC input/output wiring details. The first diagram illustrates connecting input wires: Ground (yellow-green), Line (brown/black), Neutral (blue). The second diagram illustrates connecting output wires similarly. Arrows indicate the flow and connection points.]

PV Connection

[Caution] Before connecting to PV modules, please install separately a DC circuit breaker between the inverter and PV modules.

[Warning] All wiring must be performed by a qualified personnel.

[Warning] It is 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 not exceeding max. PV array open circuit voltage of inverter.
2. Open circuit Voltage (Voc) of PV modules should be higher than min. battery voltage.

Solar Charging Mode

Take the 450Wp and 550Wp PV module as an example. After considering above two parameters, the recommended module configurations are listed in the table below. The recommended module configurations are fit for PV1 or PV2, for example: PV1 is 8 pcs in serial and PV1 could be 8 pcs in serial too, total quantity of panels is 16pcs.

Solar Panel Spec. (reference) - 450Wp

Solar Panel Spec. (reference) - 550Wp

PV Module Wire 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 cable from PV modules and PV input connectors. Then, connect positive pole (+) of connection cable to positive pole (+) of PV input connector. Connect negative pole (-) of connection cable to negative pole (-) of PV input connector.
3. Make sure the wires are securely connected.

[Diagram Description: Shows two diagrams illustrating PV wire connection. The first shows a female terminal connected to a 4-6mm² cable. The second shows a male terminal connected to a 4-6mm² cable. Arrows indicate correct polarity connection to the PV input connectors.]

Final Assembly

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

[Diagram Description: Shows the inverter unit with the bottom cover being reattached using two screws.]

Dry Contact Signal

There is one dry contact (3A/250VAC) available on the rear panel. When program 16 of F0 group is set as "Model1", it could be used to deliver signal to external device when battery voltage reaches warning level. When program 16 of F0 is set as "Model2" and the unit is working in battery mode, it could be used to trigger the grounding box to connect neutral and grounding of AC output together.

When program 16 of F0 is set as "Model2":

[Diagram Description: Shows a small diagram of the Dry Contact Port with labels NC, C, and NO.]

OPERATION

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 side of the case) to turn on the unit.

[Diagram Description: Shows the rear panel of the inverter with an arrow pointing to the Power ON/OFF switch.]

Operation and Display Panel

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

[Diagram Description: Shows the front panel of the inverter with labels for LCD display, LED indicators (AC/INV, CHG, FAULT), and Function keys (ESC, UP, DOWN, ENTER).]

LED Indicator

Function Keys

LCD Display

[Diagram Description: Shows the layout of the LCD screen divided into sections: INPUT, BATTTEMP, OUTPUT, BATTLOAD. It displays numerical values and units like kW, VA, %, °C, Hz. Icons represent PV1, PV2, L1, L2, BYPASS, ECO, Li, USER. Arrows indicate power flow directions.]

LCD Setting

1. Pressing and holding the ENTER button for 3 seconds, the unit will enter setting groups mode.
2. Press "UP" or "DOWN" button to select setting groups. There are 5 groups setting menus include F0/F1/F2/F3/F4, press "ENTER" button to confirm the selection or ESC button to exit.
3. F0: Setting general parameters
4. F1: Setting AC output parameters
5. F2: Setting battery parameters
6. F3: Setting time parameters
7. F4: Setting systems parameters
8. Press "ENTER" button to confirm the selection groups or ESC button to return selection groups or exit.

Setting F0 Programs:

Setting F1 Programs:

Setting F2 Programs:

Setting F3 Programs:

Setting F4 Programs:

LCD display description

The LCD display information will be switched in turns by pressing "UP" or "DOWN" key. All of the information could be shown in 1/2/3 area of LCD.

[Diagram Description: Shows the LCD screen layout with three main display areas labeled 1, 2, and 3. It includes INPUT/OUTPUT sections, battery temperature, load information, and various icons representing PV, AC, battery, bypass, etc.]

Fault Reference Code

There are seven groups about fault code; a fault code consists of group code and number; group code is first and number is last, such as C0.

• A: Inverter group fault code
• B: battery group fault code
• C: PV group fault code
• D: Output group fault code
• E: Parallel group fault code
• F: Other group fault code
• G: Grid group fault code

Warning Indicator

There are seven groups about warning code; a warning code consists of group code and number; number is first and group code is last, such as 0C.

• A: Inverter group fault code
• B: battery group fault code
• C: PV group fault code
• D: Output group fault code
• E: Parallel group fault code
• F: Other group fault code
• G: Grid group fault code

BATTERY EQUALIZATION

Equalization function is added into 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 battery periodically.

1. How to Apply Equalization Function

You must enable battery equalization function in monitoring LCD setting program 33 first. Then, you may apply this function in device by either one of following methods:

1. Setting equalization interval in program 37.
2. Active equalization immediately in program 39.

2. When to Equalize

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

[Diagram Description: A charging stage graph showing voltage levels over time. It depicts stages: BULK, ABSORPTION, FLOAT, EQUALIZE, and FLOAT again. Equalize Voltage is shown as the highest level, followed by Absorption Voltage, and then Float Voltage.]

3. Equalize charging time and timeout

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

[Diagram Description: A charging stage graph similar to the previous one, but specifically highlighting 'Equalize Charging Time'. It shows BULK, ABSORPT., FLOAT, and EQUALIZE stages, with a duration indicated for the EQUALIZE stage.]

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

SETTING FOR LITHIUM BATTERY

Lithium Battery Connection

If choosing lithium battery for the inverter, you are allowed to use the lithium battery only which we have configured. There are two connectors on the lithium battery: RS485 port of BMS and power cable.

Please follow below steps to implement lithium battery connection:

1. Assemble battery terminal based on recommended battery cable and terminal size (same as Lead acid, see section Lead-acid Battery connection for details).
2. Connect the end of RS485 port of battery to BMS(RS485) communication port of inverter.

[Diagram Description: Shows the rear panel of the inverter with ports labeled, including 'WIFI(OPTIONAL)', 'AC INPUT', 'AC OUTPUT', 'POS BATTERY NEG-', and communication ports like 'RS485'.]

Lithium battery communication and setting

If choosing lithium battery, make sure to connect the BMS communication cable between the battery and the inverter. This communication cable delivers information and signal between lithium battery and the inverter. This information is listed below:

1. Re-configure charging voltage, charging current, and battery discharge cut-off voltage according to the lithium battery parameters.
2. Have the inverter start or stop charging according to the status of lithium battery.

Connect the end of RS485 of battery to RS485 communication port of inverter

Make sure the lithium battery RS485 port connects to the inverter is Pin to Pin; the communication cable is inside of the package and the inverter RS485 port pin assignment is shown as below:

Setting for PYLON US2000 lithium battery

1. PYLONTECH US2000 lithium battery setting:

Dip Switch: There are 4 Dip Switches that set different baud rate and battery group address. If switch position is turned to the "OFF" position, it means "0". If switch position is turned to the "ON" position, it means "1".

• Dip 1 is "ON" to represent the baud rate 9600.
• Dip 2, 3 and 4 are reserved for battery group address.
• Dip switch 2, 3 and 4 on master battery (first battery) are to set up or change the group address.

NOTE: "1" is upper position and "0" is bottom position.

[Diagram Description: Shows a row of four dip switches labeled 1, 2, 3, 4. Switch 1 is shown in the 'ON' position. Below this, a diagram shows the rear panel of a lithium battery unit with RS485 and CAN ports.]

2. Process of install

1. Step 1. Use the RS485 cable to connect the inverter and Lithium battery.
2. Step 2. Switch on Lithium battery.

[Diagram Description: Shows the lithium battery unit with RS485 cable connected and the power switch in the 'ON' position.]

3. Step 3. Press more than three seconds to start Lithium battery; power output ready.
4. Step 4. Turn on the inverter.
5. Step 5. Be sure to select battery type as "Li2" in LCD program 5. If communication between the inverter and battery is successful, the battery icon [Li Icon] on LCD display will light.

[Diagram Description: Shows the lithium battery unit with RS485 cable connected, power switch ON, and a 'READY' indicator.]

Setting for lithium battery without communication

This suggestion is used for lithium battery application and to avoid lithium battery BMS protection without communication; please finish the setting as follow:

A. Recommended method 1: Set battery type as "LIB" in program 01 of F2;

B. Recommended method 2: Setting as follow:

1. Before starting setting, you must get the battery BMS specification:
   A. Max charging voltage
   B. Max charging current
   C. Discharging protection voltage
2. Set battery type as "LIB" in program 01 of F2;
3. Set C.V voltage as Max charging voltage of BMS-0.5V in program 03 of F2;
4. Set floating charging voltage as C.V voltage in program 03 of F2;
5. Set Low DC cut-off voltage ≥ discharging protection voltage of BMS+3V;
6. Set Max charging current in program 09 of F2 which must be less than the Max charging current of BMS.
7. Setting voltage point back to utility source when selecting "SBU priority" in program 05 of F2.

The setting value must be ≥ Low DC cut-off voltage+2V, or else the inverter will have a warning as battery voltage low.

Remark:

1. You'd better to finish setting without turn on the inverter (just let the LCD show, no output);
2. When you finish setting, please restart the inverter.

SPECIFICATIONS

Table 1 Line Mode Specifications

Table 2 Inverter Mode Specifications

Table 3 Charge Mode Specifications

Table 4 General Specifications

TROUBLE SHOOTING