PowerWalker LGT User Manual
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PowerWalker LGT User Manual

Solar inverter. off-grid charger
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User Manual
PowerWalker
SOLAR INVERTER LGT
(3600-5600VA)
OFF-Grid Charger
Version: 1.3

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Summary of Contents for PowerWalker LGT

  • Page 1 User Manual PowerWalker SOLAR INVERTER LGT (3600-5600VA) OFF-Grid Charger Version: 1.3...

  • Page 2: Table Of Contents

    Table of Contents ABOUT THIS MANUAL ............................1 Purpose ................................1 Scope ................................1 SAFETY INSTRUCTIONS ........................... 1 INTRODUCTION ..............................2 Features ................................2 Basic System Architecture ..........................2 Product Overview ............................. 3 Unpacking and Inspection ..........................4 Preparation ..............................4 Mounting the Unit .............................

  • Page 3: About This 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.

  • Page 4: Introduction

    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.

  • Page 5: Product Overview

    Product Overview Single model Parallel model Appendix I. NOTE: For parallel installation and operation, please check RGB LED ring (refer to LCD Setting section for the details) LCD display Touchable Function keys PV connectors AC input connectors AC output connectors (Load connection) Battery connectors Current sharing port Parallel communication port...

  • Page 6: Unpacking And Inspection

    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: Inverter unit Manual software CD RS-232 cable Preparation Before connecting all wirings, please take off bottom cover by removing two screws as shown below. Mounting the Unit Consider the following points before selecting where to install: Do not mount the inverter on flammable construction materials.

  • Page 7: Battery Connection

    Install the unit by screwing three 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 required to have a disconnect device in some applications, however, it’s still required to have over-current protection installed.

  • Page 8: Ac Input/Output Connection

    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.

  • Page 9: Pv Connection

    4. Then, insert AC output wires according to polarities indicated on terminal block and tighten terminal ) first. screws. Be sure to connect PE protective conductor ( →Ground (yellow-green) L→LINE (brown or black) N→Neutral (blue) 5. Make sure the wires are securely connected. CAUTION: Important Be sure to connect AC wires with correct polarity.
  • Page 10 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.

  • Page 11: Final Assembly

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

  • Page 12: Dry Contact Signal

    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. RS-232 communication to PC BMS communication USB communication to PC Dry Contact Signal There is one dry contact (3A/250VAC) available on the rear panel.

  • Page 13: Operation

    OPERATION Power ON/OFF Once the unit has been properly installed and the batteries are connected well, simply press On/Off switch to turn on the unit. Operation and Display Panel The operation and the LCD module, shown in the chart below, includes one RGB LED ring, four touchable function keys and a LCD display to indicate the operating status and input/output power information.

  • Page 14: Lcd Display Icons

    LCD Display Icons Icon Function description Input Source Information Indicates the AC input voltage and frequency. Indicates the PV voltage, current and power. Indicates the battery voltage, charging stage, configured battery parameters, charging or discharging current. Configuration Program and Fault Information Indicates the setting programs.
  • Page 15 Output Information Indicate the output voltage, load in VA, load in Watt and output frequency. Battery Information Indicates battery level in battery mode and charging status in line mode by 0-24%, 25-49%, 50-74% and 75-100%. When battery is charging, it will present battery charging status. Status Battery voltage LCD Display...
  • Page 16 Indicates setting program 16 “Charger source priority” is selected as “Solar only”. Output source priority setting display Indicates setting program 01 “Output source priority” is selected as “Utility first”. Indicates setting program 01 “Output source priority” is selected as “Solar first”. Indicates setting program 01 “Output source priority”...

  • Page 17: Lcd Setting

    LCD Setting General Setting ” After pressing and holding “ button for 3 seconds, the unit will enter the setting mode. Press “ ” or “ ” button to select setting programs. Press “ ” button to confirm you selection or “ ”...
  • Page 18 Appliances (default) If selected, acceptable AC input voltage range will be within 90-280VAC. AC input voltage range If selected, acceptable AC input voltage range will be within 170-280VAC. Saving mode disable If disabled, no matter (default) connected load is low or high, the on/off status of inverter output will not be effected.
  • Page 19 Pylontech battery If selected, programs of 02, 26, 27 and 29 will be automatically set up. No need for further setting. WECO battery If selected, programs of 02, 12, 26, 27 and 29 will be auto- configured per battery supplier recommended.
  • Page 20 220V 230V(default) Output voltage 240V 50Hz (default) 60Hz Output frequency Maximum utility charging For 3.6K model, setting range 30A (default) current is from 2A, then 10A to 100A. For 5.6K model, setting range Note: If setting value in program 02 is smaller is from 2A, then 10A to 120A.
  • Page 21 Setting range is FUL and from 48V to 64V. Increment of each click is Battery fully charged 54V (default) Setting voltage point back to battery mode when selecting “SBU” (SBU priority) in 10% (default) If “WECO battery” is selected in program 01.
  • Page 22 Only Solar Solar energy will be the only charger source no matter utility is available or not. Alarm on (default) Alarm off Alarm control Return to default display screen If selected, no matter how users (default) switch display screen, it will automatically return to default display screen (Input voltage /output voltage) after no button is...
  • Page 23 Bypass disable (default) Bypass enable Overload bypass: When enabled, the unit will transfer to line mode if overload occurs in battery mode. Record enable (default) Record disable Record Fault code 56.4V (default) If “User-Defined” is selected in program 5, this program can be set up.
  • Page 24 L3 phase: 42.0V (default) If User-Defined” is selected in program 5, this program can be set up. Setting range is from 40.0V to 54.0V. Increment of each click is 0.1V. Low DC cut-off voltage will be Low DC cut-off voltage fixed to setting value no matter what percentage of load is connected.
  • Page 25 If “Flooded” or “User-Defined” is selected in program 05, this program can be set up. Battery equalization Battery equalization disable (Default) Battery equalization 58.4V (Default) Setting range is from 48V to 64V. Increment of each click is 0.1V. Battery equalization voltage 60min (Default) Setting range is from 5min to...
  • Page 26 If equalization function is enabled in program 33, this program can be set up. If “Enable” is selected in this program, it’s to activate battery equalization immediately and LCD main page will shows “ ”. If “Disable” is selected, it will cancel equalization function until next activated equalization time arrives based on program 37setting.
  • Page 27 For hour setting, the range is from 0 to 23. Time setting – Hour For day setting, the range is from 1 to 31. Time setting– Day For month setting, the range is from 1 to 12. Time setting– Month For year setting, the range is from 17 to 99.
  • Page 28 Normal (default) Lighting speed of RGB High Power wheel Power cycling RGB LED effects Power chasing Solid on (Default) LED lighting portion will be changed by the percentage of solar input Solar input power in watt power and nominal PV power. If “Solid on”...
  • Page 29 Load percentage. LED lighting portion will be changed by load percentage. If “Solid on” is selected in #38, LED ring will light up with background color setting in #40. If “Power wheel” is selected in #38, LED ring will light up in 4 levels. If “cycling”...
  • Page 30 Other: If selected, the background Purple color is set by RGB via software. Pink Orange Data Color for RGB LED Yellow Green Blue Sky blue Data Color for RGB LED Other: If selected, the background Purple (Default) color is set by RGB via software. Pink Orange Background color of...
  • Page 31 Yellow Green Blue Sky blue (Default) Background color of RGB LED *Only available when program 95 is set as “EGS” Energy source (Grid-PV-Battery). Other: If selected, the background Purple color is set by RGB via software. Once access this program, it will show “OPP” in LCD. Press “ ”...
  • Page 32 Once access this program, it will show “CGP” in LCD. Press “ ” button to select timer setting for charger source priority. There are three timers to set up. Press “ ” or “ ” button to select specific timer option. Then, press “...
  • Page 33 USB Function Setting There are three USB function setting such as firmware upgrade, data log export and internal parameter re- Please follow below procedure to execute selected USB function setting. write from the USB disk. Procedure LCD Screen Step 1: Insert an OTG USB disk into the USB port ( Step 2: Press “...

  • Page 34: Lcd Display

    LCD Display The LCD display information will be switched in turn by pressing the “ ” or “ ” button. The selectable information is switched as the following table in order. Selectable information LCD display Input Voltage=230V, Input frequency=50Hz Utility voltage/ Utility frequency PV voltage=260V, PV current=2.5A, PV power=1500W Default PV voltage/ PV current/ PV power...
  • Page 35 Battery voltage=53.9V, Floating charging voltage=54.0V, Charging current=2A Battery voltage, charging stage/ Configured battery parameters/ Battery voltage=50.4V, Low DC cut-off voltage=44.0V, Charging or discharging current Discharging current=20A Default Display Screen Output voltage=230V, Output frequency=60Hz Output voltage, load in VA, load in Watt switch every 5 second/ Output frequency Load in VA=550VA, Output frequency=60Hz...
  • Page 36 Load in Watt=600W, Output frequency=60Hz Output voltage, load in VA, load in Watt switch every 5 second/ Output frequency Default Display Real date Dec 14, 2020. Screen Real date. Real time 11:31. Real time. PV energy generation today = 0Wh. PV energy generation today...
  • Page 37 PV energy generation this month = 0.5kWh. PV energy generation this month PV energy generation this year = 0.5kWh, PV energy generation this year Total PV energy generation = 0.5kWh. Total PV energy generation Load output energy today = 0Wh Load output energy today...
  • Page 38 Load output energy this month = 0.4kWh Load output energy this month Load output energy this year = 0.4kWh Load output energy this year Load Output Total energy = 0.4kWh. Load output total energy. Main CPU version 00050.72. Main CPU version checking.
  • Page 39 Secondary CPU version 00022.01. Secondary CPU version checking. Wi-Fi version 00088.88. Wi-Fi version checking.

  • Page 40: Operating Mode Description

    Operating Mode Description Operation mode Description LCD display Charging by utility and PV energy. Charging by utility. Standby mode Note: No output is supplied *Standby mode: The by the unit but it still inverter is not turned on can charge batteries. yet but at this time, the Charging by PV energy.
  • Page 41 Operation mode Description LCD display No charging. Fault mode Note: *Fault mode: Errors are No output is supplied caused by inside circuit by the unit. error or external reasons such as over temperature, output short circuited and so on. Charging by utility and PV energy. Charging by utility.
  • Page 42 Operation mode Description LCD display If either “SUB” (solar first) or “SBU” is selected as output source priority and battery is not connected, solar energy and the utility will provide the loads. The unit will provide output power from the Line Mode mains.

  • Page 43: Faults Reference Code

    Operation mode Description LCD display Power from battery only. The unit will provide output power from Battery Mode battery and/or PV Power from PV energy only. power. Faults Reference Code Fault Code Fault Event Icon on Fan is locked when inverter is off. Over temperature Battery voltage is too high Output short circuited.

  • Page 44: Warning Indicator

    Inverter soft start failed Over DC voltage in AC output Current sensor failed Output voltage is too low Warning Indicator Warning Warning Event Audible Alarm Icon flashing Code Beep three times every Fan is locked when inverter is on. second Over temperature None Battery is over-charged...

  • Page 45: Battery Equalization

    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.

  • Page 46: Specifications

    SPECIFICATIONS Table 1 Line Mode Specifications Solar Inverter LGT MODEL 3.6KW 5.6KW Input Voltage Waveform Sinusoidal (utility or generator) Nominal Input Voltage 230Vac 170Vac±7V (UPS) Low Loss Voltage 90Vac±7V (Appliances) 180Vac±7V (UPS); Low Loss Return Voltage 100Vac±7V (Appliances) High Loss Voltage 280Vac±7V...
  • Page 47 Table 2 Inverter Mode Specifications Solar Inverter LGT MODEL 3.6KW 5.6KW Rated Output Power 3.6KVA/3.6KW 5.6KVA/5.6KW Pure Sine Wave Output Voltage Waveform Output Voltage Regulation 230Vac±5% 60Hz or 50Hz Output Frequency Peak Efficiency Overload Protection 5s@≥150% load; 10s@110%~150% load Surge Capacity...
  • Page 48 Table 3 Charge Mode Specifications Utility Charging Mode Solar Inverter LGT MODEL 3.6KW 5.6KW Charging Current (UPS) 100A 120A @ Nominal Input Voltage Flooded 58.4 Bulk Charging Battery Voltage AGM / Gel 56.4 Battery Floating Charging Voltage 54Vdc Overcharge Protection...

  • Page 49: Trouble Shooting

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

This manual is also suitable for:

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