User Manual

LV6548V 500V
SOLAR INVERTER / CHARGER
Version: 1.0

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 spec 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. Fuses are 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 regulation to install this inverter.
12. NEVER cause AC output and DC input short circuited. 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 troubleshooting table, please send this inverter/charger back to local dealer or service center for maintenance.
14. WARNING: Because this inverter is non-isolated, only three types of PV modules are acceptable: single crystalline, poly crystalline with class A-rated and CIGS modules. To avoid any malfunction, do not connect any PV modules with possible current leakage to the inverter. For example, grounded PV modules will cause current leakage to the inverter. When using CIGS modules, please be sure NO grounding.
15. CAUTION: It’s required to use PV junction box with surge protection. Otherwise, it will cause damage on inverter when lightning occurs on PV modules.

INTRODUCTION

This is a multi-function inverter, combining functions of inverter, solar charger and battery charger to offer uninterruptible power support in a single package. The comprehensive LCD display offers user-configurable and easy- accessible button operations such as battery charging current, AC or solar charging priority, and acceptable input voltage based on different applications.

Features

• Pure sine wave inverter
• Configurable color with the built-in RGB LED bar
• Built-in Wi-Fi for mobile monitoring (APP is required)
• Supports USB On-the-Go function
• Optional 12V DC output
• Built-in anti-dusk kit
• Detachable LCD control module with multiple communication ports for BMS (RS485, CAN-BUS, RS232)
• Configurable input voltage ranges for home appliances and personal computers via LCD control panel
• Configurable AC/PV output usage timer and prioritization
• Configurable AC/Solar charger priority via LCD control panel
• Configurable battery charging current based on applications via LCD control panel
• Compatible to utility mains 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 unit. It also required the following devices to have a complete running system:

• Generator or Utility mains.
• PV modules

Consult with your system integrator for other possible system architectures depending on your requirements.
This inverter can power various appliances in home or office environment, including motor-type appliances such as tube light, fan, refrigerator and air conditioners.

Product Overview

NOTE: For parallel installation and operation, please check Appendix I.

1. LCD display
2. Status indicator
3. Charging indicator
4. Fault indicator
5. Function buttons
6. Power on/off switch
7. AC input connectors
8. AC output connectors (Load connection)
9. PV connectors
10. Battery connectors
11. Remote LCD module communicationPort
12. Current sharing port
13. Parallel communication port
14. Dry contact
15. USB port as USB communication port and USB function port
16. BMS communication port: CAN, RS-485 or RS-232
17. Output source indicators (refer to OPERATION/Operation and Display Panel section for details) and USB function setting reminder (refer to OPERATION/Function Setting for the details)
18. RS-232 communication port
19. RGB LED bar (refer to LCD Setting section for the details)
20. 12V DC output connectors (option)
21. Power switch for DC output (option)

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 of package: Preparation
Before connecting all wirings, please install two cable glands on the extension box, then fix the extension box on the rear panel of the inverter.
Note: It is necessary to install the battery extension box for UL conformity. Then, take off bottom cover by removing five screws. When removing the bottom cover, be carefully to remove three cables as shown below. 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.
• 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 right diagram to guarantee sufficient heat dissipation and to have enough space for removing wires.

SUITABLE FOR MOUNTING ON CONCRETE OR OTHER NON-COMBUSTIBLE SURFACE ONLY.
Install the unit by screwing four screws. It’s recommended to use M4 or M5 screws.

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 typical amperage in below table as required fuse or breaker size.
Ring terminal:

WARNING! All wiring must be performed by a 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 theproper recommended cable and terminal size as below.
Recommended battery cable and terminal size:

Model| Typical Amperage| Battery capacity| **Wire Size| Cable mm 2| Ring Terminal| Torque value
---|---|---|---|---|---|---
Dimensions
D (mm)| L (mm)*
LV6548V 500V| 153A| 250AH| 12/0AWG| 67| 8.4| 47| 5 Nm

Please follow below steps to implement battery connection:

1. Assemble battery ring terminal based on recommended battery cable and terminal size.
2. Fix two cable glands into positive and negative terminals.
3. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the nuts are tightened with torque of 5 Nm. Make sure polarity at both the battery and the inverter/charge is correctly connected and ring terminals are tightly screwed to the battery terminals.

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 and the ring 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 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 AC input power source, please install a separate AC breaker between 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.
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’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

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

1. Before making AC input/output connection, be sure to open DC protector or disconnector first.
2. Remove insulation sleeve 10mm for six conductors. And shorten phase L and neutral conductor N 3 mm.
3. Fix two cable glands into input and output sides.
4. Insert AC input wires according to polarities indicated on terminal block and tighten the terminal screws.

Be sure to connect PE protective conductor ( ) first.
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue)

WARNING:
Be sure that AC power source is disconnected before attempting to hardwire it to the unit.
5. Then, insert AC output wires according to polarities indicated on terminal block and tighten terminal screws. Be sure to connect PE protective conductor ( ) first.
→Ground (yellow-green)
L→LINE (brown or black)
N→Neutral (blue) 6. 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 conditioner requires 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 manufacturer of air conditioner if it’s equipped with time-delay function before installation. Otherwise, this inverter/charger will be trigger overload fault and cut off output to protect your appliance but sometimes it still causes internal damage to the air conditioner.
PV Connection
CAUTION: Before connecting to PV modules, please install separately DC circuit breakers between inverter and PV modules.
NOTE1: Please use 600VDC/30A circuit breaker.
NOTE2: The overvoltage category of the PV input is II.
Please follow the steps below to implement PV module connection:
CAUTION: Exceeding the maximum input voltage can destroy the unit!! Check the system before wire connection.
WARNING: Because this inverter is non-isolated, only three types of PV modules are acceptable: single crystalline and poly crystalline with class A-rated and CIGS modules.
To avoid any malfunction, do not connect any PV modules with possible current leakage to the inverter. For example, grounded PV modules will cause current leakage to the inverter. When using CIGS modules, please be sure NO grounding.
CAUTION: It’s required to use PV junction box with surge protection. Otherwise, it will cause damage on inverter when lightning occurs on PV modules.
Step 1: Check the input voltage of PV array modules. This system is applied with two strings of PV array.
Please make sure that the maximum current load of each PV input connector is 18A.
Step 2: Disconnect the circuit breaker and switch off the DC switch.
Step 3: Assemble provided PV connectors with PV modules by the following steps.
Components for PV connectors and Tools:

Female connector housing|
---|---
Female terminal|
Male connector housing|
Male terminal|
Crimping tool and spanner|

Prepare the cable and follow the connector assembly process:
Strip one cable 8 mm on both end sides and be careful NOT to nick conductors. Insert striped cable into female terminal and crimp female terminal as shown below. Insert assembled cable into female connector housing as shown below. Insert striped cable into male terminal and crimp male terminal as shown below. Insert assembled cable into male connector housing as shown below. Then, use spanner to screw pressure dome tightly to female connector and male connector as shown below. Step 4: 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. WARNING! For safety and efficiency, it’s very important to use appropriate cables for PV module connection.
To reduce risk of injury, please use the proper cable size as recommended below.

CAUTION: Never directly touch the terminals of inverter. It might cause lethal electric shock.

Recommended Panel Configuration
When selecting proper PV modules, please be sure to consider the following parameters:

1. Open circuit Voltage (Voc) of PV modules not to exceed maximum PV array open circuit voltage of the inverter.
2. Open circuit Voltage (Voc) of PV modules should be higher than the start-up voltage.

Recommended solar panel configuration:

Solar Panel Spec. (reference)
– 330Wp
–  Vmp: 33.7Vdc
– Imp: 9.79A
–  Voc: 39.61Vdc
– Isc: 10.4A
–  Cells: 60| SOLAR INPUT 1| SOLAR INPUT 2| ****

Q’ty of panels

| ****

Total Input Power

---|---|---|---|---
Min in series: 3pcs, per input Max. in series:12pcs, per input
3pcs in series| x| 3pcs| 990W
x| 3pcs in series| 3pcs| 990W
12pcs in series| x| 12pcs| 3960W
x| 12pcs in series| 12pcs| 3960W
6pcs in series| 6pcs in series| 12pcs| 3960W
6pcs in series, 2 strings| x| 12pcs| 3960W
x| 6pcs in series, 2 strings| 12pcs| 3960W
6pcs in series, 2 strings| 6pcs in series, 2 strings| 24pcs| 7920W

Final Assembly

After connecting all wirings, re-connect three cables and then put bottom cover back by fixing screws as shown below.

Remote Display Panel Installation
The LCD module can be removable and installed in a remote location with an optional communication cable.
Please take the follow steps to implement this remote panel installation.
Step 1. Remove the screw on the bottom of LCD module and pull down the module from the case. Detach the cable from the original communication port. Be sure to replace the retention plate back to the inverter. Step 2. Prepare your mounting holes in the marked locations as shown in the illustration below. The LCD module then can be securely mounted to your desired location. Note: Wall installation should be implemented with the proper screws to the right.
Step 3. After LCD module is installed, connect LCD module to the inverter with an optional RJ45 communication cable as shown below. DC Output Connectors (Optional)
These DC output connectors are used to provide emergency power backup to all kinds of DC-powered equipment such as routers, modems, set-top box, VOIP phone systems, surveillance system, alarm system, access control system and many critical telecom equipment. There are 4 channels (current limit at 3A for each channel), which could be activated/disabled manually either through LCD operation or power switch beside the DC jacks.
Supplied dimension of DC jack (male) is OD 5.5mm, ID 2.5mm.

Communication Connection
Serial Connection
Please use the supplied serial cable to connect between the inverter and your PC. Install the monitoring software from the bundled CD and follow the on- screen instructions to complete your installation. For detailed software operation, refer to the software user manual on the bundled CD.
Wi-Fi Connection
This unit is equipped with a Wi-Fi transmitter. Wi-Fi transmitter can enable wireless communication between off-grid inverters and monitoring platform. Users can access and control the monitored inverter with downloaded APP. You may find “WatchPower” app from the Apple® Store or “WatchPower Wi-Fi” in Google® Play Store. All data loggers and parameters are saved in iCloud. For quick installation and operation, please check Appendix III. Dry Contact Signal
There is one dry contact (3A/250VAC) available on the rear panel. It could be used to deliver signal to external device when battery voltage reaches warning level.

Battery voltage > Setting value in Program 13 or battery charging reaches floating stage|

Close

|

Open

Program 01 is set as SBU (SBU priority)| Battery voltage < Setting value in Program 12| Open| Close
Battery voltage > Setting value in Program 13 or battery charging reaches floating stage|

Close

|

Open

BMS Communication
It is recommended to purchase a special communication cable if you are connecting to Lithium-Ion battery banks. Please refer to Appendix II- BMS Communication Installation for details.

OPERATION

Power ON/OFF
Once the unit has been properly installed and the batteries are connected well, simply press On/Off switch (located on the display panel) to turn on the unit. Inverter Turn-on
After this inverter is turned on, WELCOME light show will be started with RGB LED BAR. It will slowly cycle through entire spectrum of nine colors (Green, Sky blue, Royal blue, Violet, Pink, Red, Honey, Yellow, Lime yellow) about 10-15 seconds. After initialization, it will light up with default color.
RGB LED BAR can light up in different color and light effects based on the setting of energy priority to display the operation mode, energy source, battery capacity and load level. These parameters such as color, effects, brightness, speed and so on can be configured through the LCD panel. Please refer to LCD settings for the details.
Operation and Display Panel
The operation and the LCD module, shown in the chart below, includes six indicators, six function keys, on/off switch and a LCD display to indicate the operating status and input/output power information. Indicators

| Green| Solid On| Battery is fully charged
Flashing| Battery is charging.

FAULT

| Red| Solid On| Fault mode
Flashing| Warning mode

Function Keys

| ESC| Exit the setting
USB function setting| Select USB OTG functions

| Timer setting for the Output source priority| Setup the timer for prioritizing the output source

| Timer setting for the Charger source priority| **** Setup the timer for prioritizing the charger source
| Press these two keys at the time to switch RGB LED bar for output source priority and battery discharge/charge status

| Up| To last selection

| Down| To next selection

| Enter| To confirm/enter the selection in setting mode

LCD Display Icons

Input Source Information

| Indicates the AC input.

| Indicates the PV input

| Indicate input voltage, input frequency, PV voltage, charger current, charger power, battery voltage.
Configuration Program and Fault Information
| ****

Indicates the setting programs.

| Indicates the warning and fault codes.
Warning: flashing with warning code.
Fault: lighting with fault code
Output Information

| Indicate output voltage, output frequency, load percent, load in VA, load in Watt and discharging current.
Battery Information

| Indicates battery level by 0-24%, 25-49%, 50-74% and 75-100% in battery mode and charging status in line mode.
When battery is charging, it will present battery charging status.

Status

| Battery voltage|

LCD Display

---|---|---

Constant Current mode / Constant Voltage mode

| <2V/cell| 4 bars will flash in turns.
2 ~ 2.083V/cell| Bottom bar will be on and the other three bars will flash in turns.
2.083 ~ 2.167V/cell| Bottom two bars will be on and the other two bars will flash in turns.

2.167 V/cell| Bottom three bars will be on and the top bar

will flash.

Floating mode. Batteries are fully charged.| 4 bars will be on.

In battery mode, it will present battery capacity.  

LCD Setting

General Setting
After pressing and holding “ ” button for 3 seconds, the unit will enter the Setup Mode. Press “ ” or “ ” button to select setting programs. Press “ ” button to confirm you selection or “ ” button to exit.
Setting Programs:
Function Setting
There are three function keys on the display panel to implement special functions such as USB OTG, Timer setting for output source priority and timer setting for charger source priority.
1. USB Function Setting
Insert an OTG USB disk into the USB port ( ). Press and hold “ ” button for 3 seconds to enter USB Setup Mode. These functions including inverter firmware upgrade, data log export and internal parameters rewrite from the USB disk. Error message for USB On-the-Go functions:

If any error occurs, error code will only show 3 seconds. After three seconds, it will automatically return to display screen.
2. Timer Setting for Output Source Priority
This timer setting is to set up the output source priority per day. Step 3: Please select setting program by following each procedure.

LCD Display
The LCD display information will be switched in turn by pressing the “UP” or “DOWN” button. The selectable information is switched as the following table in order.

Operating Mode Description

Faults Reference Code Warning Indicator

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.
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.

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. 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. 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.

SPECIFICATIONS

Table 1 Line Mode Specifications

80Vac±7V (Appliances)

Low Loss Return Voltage| 100Vac±7V (UPS);

90Vac±7V (Appliances)

High Loss Voltage| 140Vac±7V
High Loss Return Voltage| 135Vac±7V
Max AC Input Voltage| 150Vac
Max AC Input Current| 60A
Nominal Input Frequency| 50Hz / 60Hz (Auto detection)
Low Loss Frequency| 40±1Hz
Low Loss Return Frequency| 42±1Hz
High Loss Frequency| 65±1Hz
High Loss Return Frequency| 63±1Hz
Output Short Circuit Protection| Line mode: Circuit Breaker (70A)

Battery mode: Electronic Circuits

Efficiency (Line Mode)| >95% ( Rated R load, battery full charged )
Transfer Time| 10ms typical (UPS); 20ms typical (Appliances)
Power Limitation|

Table 2 Inverter Mode Specifications

Optional 12V DC Output
DC Output| 12 VDC ± 7%, 100W
High DC Cut-off Voltage| 63Vdc
Low DC Cut-off Voltage| 44Vdc
Nominal DC Input Voltage| 48Vdc
Cold Start Voltage| 46.0Vdc
Low DC Warning Voltage|
@ load < 20%| 46.0Vdc
@ 20% ≤ load < 50%| 42.8Vdc
@ load ≥ 50%| 40.4Vdc
Low DC Warning Return Voltage|
@ load < 20%| 48.0Vdc
@ 20% ≤ load < 50%| 44.8Vdc
@ load ≥ 50%| 42.4Vdc
Low DC Cut-off Voltage|
@ load < 20%| 44.0Vdc
@ 20% ≤ load < 50%| 40.8Vdc
@ load ≥ 50%| 38.4Vdc
High DC Recovery Voltage| 61Vdc
High DC Cut-off Voltage| 63Vdc
DC Voltage Accuracy| +/-0.3V@ no load
THDV| <5% for linear load,<10% for non-linear load @ nominal voltage
DC Offset| ≦100mV

Table 3 Charge Mode Specifications

Utility Charging Mode

MODEL| LV6548V 500V
Charging Current (UPS) @ Nominal Input Voltage| 120A

Bulk Charging Voltage

| Flooded Battery| 58.4Vdc
AGM / Gel Battery| 56.4Vdc
Floating Charging Voltage| 54Vdc
Overcharge Protection| 63Vdc
Charging Algorithm| 3-Step
Charging Curve|

Solar Input
MODEL| LV6548V 500V
Rated Power| 8000W
Max. PV Array Open Circuit Voltage| 500Vdc
PV Array MPPT Voltage Range| 90Vdc~450Vdc
Max. Input Current| 18A x 2
Start-up Voltage| 80V +/- 5Vdc
Power Limitation|

Table 4 General Specifications

MODEL

|

LV6548V 500V

---|---
Safety Certification| UL
Operating Temperature Range| -10°C to 50°C
Storage temperature| -15°C~ 60°C
Humidity| 5% to 95% Relative Humidity (Non-condensing)
Dimension (DWH), mm| 147.4x 432.5 x 553.6
Net Weight, kg| 18.4

Table 5 Parallel Specifications

Note: Parallel feature will be disabled when only PV power is available.

TROUBLE SHOOTING

Problem| LCD/LED/Buzzer| Explanation / Possible cause| What to do
---|---|---|---
Unit shuts down automatically during startup process.| LCD/LEDs and buzzer will be active for 3 seconds and then complete off.| The battery voltage is too low (<1.91V/Cell)| **** 1. Re-charge battery.
2. Replace battery.

No response after power on.

| ****

No indication.

| 1. The battery voltage is far too low. (<1.4V/Cell)
2.  Battery polarity is connected reversed.| 1.Check if batteries and the wiring are connected well.
2. Re-charge battery.
3. Replace battery.
Mains exist but the unit works in battery mode.| Input voltage is displayed as 0 on the LCD and green LED is flashing.| Input protector is tripped| Check if AC breaker is tripped and AC wiring is connected well.
Green LED is flashing.| Insufficient quality of AC power. (Shore or Generator)| 1.   Check if AC wires are too thin and/or too long.
2.   Check if generator (if applied) is working well or if input voltage range setting is correct. (UPSàAppliance)
Green LED is flashing.| Set “Solar First” as the priority of output source.| Change output source priority to Utility first.
When the unit is turned on, internal relay is switched on and off repeatedly.| LCD display and LEDs are flashing| Battery is disconnected.| Check if battery wires are connected well.
Buzzer beeps continuously and red LED is on.| Fault code 07| Overload error. The inverter is overload 110% and time is up.| Reduce the connected load by switching off some equipment.
Fault code 05| Output short circuited.| Check if wiring is connected well and remove abnormal load.
Fault code 02| Internal temperature of inverter component is over 100°C.| Check whether the air flow of the unit is blocked or whether the ambient temperature is too high.
Fault code 03| Battery is over-charged.| Return to repair center.
The battery voltage is too high.| Check if spec and quantity of batteries are meet requirements.
Fault code 01| Fan fault| Replace the fan.

Fault code 06/58

| Output abnormal (Inverter voltage below than 190Vac or is higher than 260Vac)| 1.   Reduce the connected load.
2.   Return to repair center
Fault code 08/09/53/57| Internal components failed.| Return to repair center.
Fault code 51| Over current or surge.| Restart the unit, if the error happens again, please return to repair center.
Fault code 52| Bus voltage is too low.
Fault code 55| Output voltage is unbalanced.
**** Fault code 56| Battery is not connected well or fuse is burnt.| If the battery is connected well, please return to repair center.

Appendix I: Parallel function

1. Introduction
This inverter can be used in parallel with three different operation modes.

1. Parallel operation in single phase is with up to 6 units. The supported maximum output power is 39KW/39KVA.
2. Maximum six units work together to support split-phase equipment. 5 units support one phase maximum.
   The supported maximum output power is 39KW/39KVA and one phase can be up to 32.5KW/32.5KVA.

2. Mounting the Unit
When installing multiple units, please follow below chart. NOTE: 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. Be sure to install each unit in the same level.
3. Wiring Connection
WARNING: It’s REQUIRED to connect battery for parallel operation.
The cable size of each inverter is shown as below: Recommended battery cable and terminal size for each inverter:

Model| Wire Size| Cable mm 2| Ring Terminal| Torque value
---|---|---|---|---
Dimensions
D (mm)| L (mm)
LV6548V 500V| 1*2/0AWG| 67| 8.4| 47| 5 Nm

WARNING: Be sure the length of all battery cables is the same. Otherwise, there will be voltage difference between inverter and battery to cause parallel inverters not working.
Recommended AC input and output cable size for each inverter:

You need to connect the cables of each inverter together. Take the battery cables for example: You need to use a connector or bus-bar as a joint to connect the battery cables together, and then connect to the battery terminal. The cable size used from joint to battery should be X times cable size in the tables above. “X” indicates the number of inverters connected in parallel.
Regarding AC input and output, please also follow the same principle.
CAUTION!! Please install the breaker at the battery and AC input side. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current of battery or AC input.
Recommended breaker specification of battery for each inverter:

*If you want to use only one breaker at the battery side for the whole system, the rating of the breaker should be X times current of 1 unit. “X” indicates the number of inverters connected in parallel.
Recommended breaker specification of AC input with single phase:

Note 1: Also, you can use 60A breaker for LV6548V 500V model with only 1 unit and install one breaker at its AC input in each inverter.
Note 2: Regarding three-phase system, you can use 4-pole breaker directly and the rating of the breaker should be compatible with the phase current limitation from the phase with maximum units.
Recommended battery capacity

WARNING! Be sure that all inverters will share the same battery bank. Otherwise, the inverters will transfer to fault mode.
4-1. Parallel Operation in Single phase
Two inverters in parallel:
Power Connection Communication Connection Three inverters in parallel:
Power Connection Communication Connection Four inverters in parallel:
Power Connection Communication Connection Five inverters in parallel:
Power Connection Communication Connection Six inverters in parallel:
Power Connection 4-2. Support 3-phase equipment
Two inverters in each phase:
Power Connection Communication Connection Four inverters in one phase and one inverter for the other two phases:
Power Connection Communication Connection
Three inverters in one phase, two inverters in second phase and one inverter for the third phase:
Power Connection Communication Connection
Three inverters in one phase and only one inverter for the remaining two phases:
Power Connection Communication Connection Two inverters in two phases and only one inverter for the remaining phase:
Power Connection Communication Connection Two inverters in one phase and only one inverter for the remaining phases:
Power Connection Communication Connection
One inverter in each phase:
Power Connection Communication Connection

WARNING: Do not connect the current sharing cable between the inverters which are in different phases.
Otherwise, it may damage the inverters.
4-3. Support split-phase equipment
Three inverters in each phase: Communication Connection Two inverters in each phase:
Power Connection Communication Connection One inverter in each phase:
Power Connection Communication Connection 5. PV Connection
Please refer to user manual of single unit for PV Connection.
CAUTION: Each inverter should connect to PV modules separately.

6. LCD Setting and Display
Setting Program: Fault code display: Code Reference:

Commissioning

Parallel in single phase
Step 1: Check the following requirements before commissioning:
Correct wire connection
Ensure all breakers in Line wires of load side are open and each Neutral wires of each unit are connected together.
Step 2: Turn on each unit and set “PAL” in LCD setting program 28 of each unit. And then shut down all units.
NOET: It’s necessary to turn off switch when setting LCD program. Otherwise, the setting cannot be programmed.
Step 3: Turn on each unit. NOTE: Master and slave units are randomly defined.
Step 4: Switch on all AC breakers of Line wires in AC input. It’s better to have all inverters connect to utility at the same time. If not, it will display fault 82 in following-order inverters. However, these inverters will automatically restart. If detecting AC connection, they will work normally. Step 5: If there is no more fault alarm, the parallel system is completely installed.
Step 6: Please switch on all breakers of Line wires in load side. This system will start to provide power to the load.
Support split-phase equipment
Step 1 : Check the following requirements before commissioning:
Correct wire connection
Ensure all breakers in Line wires of load side are open and each Neutral wires of each unit are connected together.
Step 2: Turn on all units and configure LCD program 28 as 2P1 and 2P2 sequentially. And then shut down all units.
NOET: It’s necessary to turn off switch when setting LCD program. Otherwise, the setting cannot be programmed.
Step 3: Turn on all units sequentially. Step 4 : Switch on all AC breakers of Line wires in AC input. If AC connection is detected and split- phases are matched with unit setting, they will work normally. Otherwise, the AC icon will flash and they will not work in line mode.

Step 5: If there is no more fault alarm, the system to split-phase equipment is completely installed.
Step 6: Please switch on all breakers of Line wires in load side. This system will start to provide power to the load.
Note 1 : To avoid overload occurring, before turning on breakers in load side, it’s better to have whole system in operation first.
Note 2: Transfer time for this operation exists. Power interruption may happen to critical devices, which cannot bear transfer time.
8. Trouble shooting

Situation

|

Solution

---|---
Fault Code|

Fault Event Description

60| Current feedback into the inverter is detected.| 1. Restart the inverter.
2. Check if L/N cables are not connected reversely in all inverters.
3.For parallel system in single phase, make sure the sharing are connected in all inverters.
For supporting three-phase system, make sure the sharing cables are connected in the inverters in the same phase, and disconnected in the inverters in different phases.
4. If the problem remains, please contact your installer.
71| The firmware version of each inverter is not the same.| 1. Update all inverter firmware to the same version.
2. Check the version of each inverter via LCD setting and make sure the CPU versions are same. If not, please contact your instraller to provide the firmware to update.
3. After updating, if the problem still remains, please contact your installer.
72| The output current of each inverter is different.| 1.Check if sharing cables are connected well and restart the inverter.

2. If the problem remains, please contact your installer.

80| CAN data loss| 1.Check if communication cables are connected well and restart the inverter.
2. If the problem remains, please contact your installer.
81| Host data loss
82| Synchronization data loss
83| The battery voltage of each inverter is not the same.| 1. Make sure all inverters share same groups of batteries together.
2. Remove all loads and disconnect AC input and PV input. Then, check battery voltage of all inverters. If the values from all inverters are close, please check if all battery cables are the same length and same material type. Otherwise, please contact your installer to provide SOP to calibrate battery voltage of each inverter.
3. If the problem still remains, please contact your installer.
84| AC input voltage and frequency are detected different.| 1. Check the utility wiring conncetion and restart the inverter.
2. Make sure utility starts up at same time. If there are breakers installed between utility and inverters, please be sure all breakers can be turned on AC input at same time.
3. If the problem remains, please contact your installer.
85| AC output current unbalance| 1.Restart the inverter.
2. Remove some excessive loads and re-check load information from LCD of inverters. If the values are different, please check if AC input and output cables are in the same length and material type.
3. If the problem remains, please contact your installer.
86| AC output mode setting is different.| 1.Switch off the inverter and check LCD setting #28.
2. For parallel system in single phase, make sure no 1P1 or 2P2 is set on

28.

For supporting split-phase system, make sure no “PAL” is set on #28.
3. If the problem remains, please contact your installer.

Appendix II: BMS Communication Installation

1. Introduction
If connecting to lithium battery, it is recommended to purchase a custom-made RJ45 communication cable.
Please check with your dealer or integrator for details.
This custom-made RJ45 communication cable delivers information and signal between lithium battery and the inverter. These information are listed below:
Re-configure charging voltage, charging current and battery discharge cut-off voltage according to the lithium battery parameters.
Have the inverter start or stop charging according to the status of lithium battery.
2. Pin Assignment for BMS Communication Port

| Definition
---|---
PIN 1| RS232TX
PIN 2| RS232RX
PIN 3| RS485B
PIN 4| NC
PIN 5| RS485A
PIN 6| CANH
PIN 7| CANL
PIN 8| GND

3. Lithium Battery Communication Configuration
ID Switch indicates the unique ID code for each battery module. It’s required to assign a unique ID to each battery module for normal operation. We can set up the ID code for each battery module by rotating the PIN number on the ID switch. From number 0 to 9, the number can be random; no particular order. Maximum 10 battery modules can be operated in parallel.

①Dip Switch: There are 4 Dip Switches that sets 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.

Dip 1

| Dip 2| Dip 3| Dip 4|

Group address

---|---|---|---|---
1: RS485 baud rate=9600
Restart to take effect| 0| 0| 0| Single group only. It’s required to set up master battery with this setting and slave batteries are unrestricted.
1| 0| 0| Multiple group condition. It’s required to set up master battery on the first group with this setting and slave batteries are unrestricted.
0| 1| 0| Multiple group condition. It’s required to set up master battery on the second group with this setting and slave batteries are unrestricted.
1| 1| 0| Multiple group condition. It’s required to set up master battery on the third group with this setting and slave batteries are unrestricted.
0| 0| 1| Multiple group condition. It’s required to set up master battery on the fourth group with this setting and slave batteries are unrestricted.
1| 0| 1| Multiple group condition. It’s required to set up master battery on the fifth group with this setting and slave batteries are unrestricted.

NOTE: The maximum groups of lithium battery is 5 and for maximum number for each group, please check with battery manufacturer.
4. Installation and Operation
LIO-4810-150A/ESS LIO-I 4810
After ID no. is assigned for each battery module, please set up LCD panel in inverter and install the wiring connection as following steps.
Step 1: Use supplied RJ11 signal cable to connect into the extension port ( P1 or P2 ).Step 2: Use supplied RJ45 cable (from battery module package) to connect inverter and Lithium battery.

• For multiple battery connection, please check battery manual for the details.
  Note for parallel system:

  1. Only support common battery installation.
  2. Use custom-made RJ45 cable to connect any inverter (no need to connect to a specific inverter) and Lithium battery. Simply set this inverter battery type to “LIB” in LCD program 5. Others should be “USE”.

Step 3: Turn the breaker switch “ON”. Now, the battery module is ready for DC output.Step 4: Press Power on/off button on battery module for 5 secs, the battery module will start up.
*If the manual button cannot be approached, just simply turn on the inverter module. The battery module will be automatically turned on.
Step 5: Turn on the inverter. Step 6. Be sure to select battery type as “LIB” in LCD program 5. If communication between the inverter and battery is successful, the battery icon on LCD display will flash. Generally speaking, it will take longer than 1 minute to establish communication.
PYLONTECH
After configuration, please install LCD panel with inverter and Lithium battery with the following steps.
Step 1. Use custom-made RJ45 cable to connect inverter and Lithium battery. Note for parallel system:

1. Only support common battery installation.
2. Use custom-made RJ45 cable to connect any inverter (no need to connect to a specific inverter) and Lithium battery. Simply set this inverter battery type to “PYL” in LCD program 5. Others should be “USE”.

Step 2. Switch on Lithium battery.
Step 3. Press more than three seconds to start Lithium battery, power output ready. Step 4. Turn on the inverter. Step 5. Be sure to select battery type as “PYL” in LCD program 5. If communication between the inverter and battery is successful, the battery icon on LCD display will flash. Generally speaking, it will take longer than 1 minute to establish communication.
Active Function
This function is to activate lithium battery automatically while commissioning. After battery wiring and commissioning is successfully, if battery is not detected, the inverter will automatically activate battery if the inverter is powered on.
5. LCD Display Information
Press “ ” or “ ” button to switch LCD display information. It will show battery pack and battery group number before “Main CPU version checking” as shown below. 6. Code Reference
Related information code will be displayed on LCD screen. Please check inverter LCD screen for the operation.

Appendix III: The Wi-Fi Operation Guide in Remote Panel

1. Introduction
Wi-Fi module can enable wireless communication between off-grid inverters and monitoring platform. Users have complete and remote monitoring and controlling experience for inverters when combining Wi-Fi module with WatchPower APP, available for both iOS and Android based device. All data loggers and parameters are saved in iCloud.
The major functions of this APP:

• Delivers device status during normal operation.
• Allows to configure device setting after installation.
• Notifies users when a warning or alarm occurs.
• Allows users to query inverter history data.

2. WatchPower App
2-1. Download and install APP
Please scan the following QR code with your smart phone and download WatchPower App.
Operating system requirement for your smart phone:
iOS system supports iOS 9.0 and above
Android system supports Android 5.0 and above
Please scan the following QR code with your smart phone and download WatchPower App.

|
https://play.google.com/store/apps/details?id=wifiapp.volfw.watchpower| https://apps.apple.com/us/app/id1487569321

Or you may find “WatchPower” app from the Apple® Store or “WatchPower Wi-Fi” in Google® Play Store.
2-2. Initial Setup
Step 1: Registration at first time
After the installation, please tap the shortcut icon **** to access this APP on your mobile screen. In the screen, tap “Register” to access “User Registration” page. Fill in all required information and scan the remote box PN by tapping   icon. Or you can simply enter PN directly. Then, tap “Register” button.Then, a “Registration success” window will pop up. Tap “Go now” to continue setting local Wi-Fi network connection. Step 2: Local Wi-Fi Module Configuration
Now, you are in “Wi-Fi Config” page. There are detailed setup procedure listed in “How to connect?” section and you may follow it to connect Wi-Fi. Enter the “SettingsWi-Fi” and select connected Wi-Fi name. The connected Wi-Fi name is the same to your Wi-Fi PN number and enter default password “12345678”.
Then, return to WatchPower APP and tap “ ” button when Wi-Fi module is connected successfully.

Step 3: Wi-Fi Network settings
Tap icon to select your local Wi-Fi router name (to access the internet) and enter password. Step 4: Tap “Confirm” to complete the Wi-Fi configuration between the Wi-Fi module and the Internet. If the connection fails, please repeat Step 2 and 3. Diagnose Function
If the module is not monitoring properly, please tap “ ” on the top right corner of the screen for further details. It will show repair suggestion. Please follow it to fix the problem. Then, repeat the steps in the chapter 4.2 to re-set network setting. After all setting, tap “Rediagnosis” to re-connect again. 2-3. Login and APP Main Function
After finishing the registration and local Wi-Fi configuration, enter registered name and password to login.
Note: Tick “Remember Me” for your login convenience afterwards. Overview
After login is successfully, you can access “Overview” page to have overview of your monitoring devices, including overall operation situation and Energy information for Current power and Today power as below diagram. Devices
Tap the icon (located on the bottom) to enter Device List page. You can review all devices here by adding or deleting Wi-Fi Module in this page.Tap icon on the top right corner and manually enter part number to add device. This part number label is pasted on the bottom of remote LCD panel. After entering part number, tap “Confirm” to add this device in the Device list.

For more information about Device List, please refer to the section 2.4.
ME
In ME page, users can modify “My information”, including【User’s Photo】,【Account security】, 【Modify password】,【Clear cache】,and【Log-out】, shown as below diagrams. 2-4. Device List
In Device List page, you can pull down to refresh the device information and then tap any device you want to check up for its real-time status and related information as well as to change parameter settings. Please refer to the parameter setting list. Device Mode
On the top of screen, there is a dynamic power flow chart to show live operation. It contains five icons to present PV power, inverter, load, utility and battery. Based on your inverter model status, there will be【Standby Mode】,【Line Mode】,【Battery Mode】. 【Standby Mode 】Inverter will not power the load until “ON” switch is pressed. Qualified utility or PV source can charge battery in standby mode. 【Line Mode】 Inverter will power the load from the utility with or without PV charging. Qualified utility or PV source can charge battery. 【Battery Mode】 Inverter will power the load from the batter with or without PV charging. Only PV source can charge battery. Device Alarm and Name Modification
In this page, tap the icon on the top right corner to enter the device alarm page. Then, you can review alarm history and detailed information. Tap the icon on the top right corner, a blank input box will pop out. Then, you can edit the name for your device and tap “Confirm” to complete name modification. Device Information Data
Users can check up 【Basic Information】,【Product Information】,【Rated information】,【History】, and【Wi- Fi Module Information】by swiping left.

【Basic Information】 displays basic information of the inverter, including AC voltage, AC frequency, PV input voltage, Battery voltage, Battery capacity, Charging current, Output voltage, Output frequency, Output apparent power, Output active power and Load percent. Please slide up to see more basic information.
【Production Information】 displays Model type (Inverter type), Main CPU version, Bluetooth CPU version and secondary CPU version.
【Rated Information】 displays information of Nominal AC voltage, Nominal AC current, Rated battery
voltage, Nominal output voltage, Nominal output frequency, Nominal output current, Nominal output apparent power and Nominal output active power. Please slide up to see more rated information.
【History】displays the record of unit information and setting timely.
【Wi-Fi Module Information】displays of Wi-Fi Module PN, status and firmware version.
Parameter Setting
This page is to activate some features and set up parameters for inverters. Please be noted that the listing in “Parameter Setting” page in below diagram may differ from the models of monitored inverter. Here will briefly highlight some of it,【Output Setting】,【Battery Parameter Setting】,【Enable/ Disable items】, 【Restore to the defaults】to illustrate.

There are three ways to modify setting and they vary according to each parameter.
a) Listing options to change values by tapping one of it.
b) Activate/Shut down functions by clicking “Enable” or “Disable” button.
c) Changing values by clicking arrows or entering the numbers directly in the column.
Each function setting is saved by clicking “Set” button.
Please refer to below parameter setting list for an overall description and be noted that the available parameters may vary depending on different models. Please always see the original product manual for detailed setting instructions.
Parameter setting list:

Item

|

Description

---|---
Output setting| Output source priority| To configure load power source priority.
AC input range| When selecting “UPS”, it’s allowed to connect personal computer.
Please check product manual for details.
When selecting “Appliance”, it’s allowed to connect home appliances.
Output voltage| To set output voltage.
Output frequency| To set output frequency.
Battery parameter setting| Battery type:| To set connected battery type.
Battery cut-off voltage| To set the battery stop discharging voltage.
Please see product manual for the recommended voltage range based on connected battery type.
Back to grid voltage| When “SBU” or “SOL” is set as output source priority and battery voltage is lower than this setting voltage, unit will transfer to line mode and the grid will provide power to load.
Back to discharge voltage| When “SBU” or “SOL” is set as output source priority and battery voltage is higher than this setting voltage, battery will be allowed to discharge.
| |
---|---|---
Charger source priority:| To configure charger source priority.
Max. charging current| It’s to set up battery charging parameters. The selectable values in different inverter model may vary.
Please see product manual for the details.
Max. AC charging current:
Float charging voltage
Bulk charging voltage| It’s to set up battery charging parameters. The selectable values in different inverter model may vary. Please see product manual for the details.
Battery equalization| Enable or disable battery equalization function.
Real-time Activate Battery Equalization| It’s real-time action to activate battery equalization.
Equalized Time Out| To set up the duration time for battery equalization.
Equalized Time| To set up the extended time to continue battery equalization.
Equalization Period| To set up the frequency for battery equalization.
Equalization Voltage| To set up the battery equalization voltage.
Enable/Disable Functions| LCD Auto-return to Main screen| If enable, LCD screen will return to its main screen after one minute automatically.
Fault Code Record| If enabled, fault code will be recorded in the inverter when any fault happens.
Backlight| If disabled, LCD backlight will be off when panel button is not operated for 1 minute.
Bypass Function| If enabled, unit will transfer to line mode when overload happened in battery mode.
Beeps while primary source interrupt| If enabled, buzzer will alarm when primary source is abnormal.
Over Temperature Auto Restart| If disabled, the unit won’t be restarted after over-temperature fault is solved.
Overload Auto Restart| If disabled, the unit won’t be restarted after overload occurs.
Buzzer| If disabled, buzzer won’t be on when alarm/fault occurred.
RGB LED Setting| Enable/disable| Turn on or off RGB LEDs
Brightness| Adjust the lighting brightness
Speed| Adjust the lighting speed
Effects| Change the light effects
Color selection| Adjust color combination to show energy source an battery status
Restore to the default| This function is to restore all settings back to default settings.

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