PowMr POW-LVM2.4K-24V User Manual

All-in-one solar inverter

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POW-LVM2.4K-24V

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Page 1 User Manual POW-LVM2.4K-24V...
Page 2 Copyright Notice Copyright © 2024 PowMr. All rights reserved. All information in this user manual, including images and symbols, is the property of PowMr. Unauthorized use, in whole or in part, of the content by individuals or entities outside the company is strictly prohibited.
Page 3: Table Of Contents
User Manual POW-LVM2.4K-24V Table Of Contents 1 ABOUT THIS MANUAL ........................1 1.1 Purpose ..............................1 1.2 Scope ................................. 1 2 SAFETY INSTRUCTIONS ........................2 3 INTRODUCTION ..........................3 3.1 Features ..............................3 3.2 Basic System Architecture ........................4 3.3 Product Overview ........................... 5 4 INSTALLATION ..........................
Page 4 User Manual POW-LVM2.4K-24V 7 SPECIFICATIONS ..........................35 7.1 Table 1 Line Mode Specifications ..................... 35 7.2 Table 2 Inverter Mode Specifications ....................36 7.3 Table 3 Charge Mode Specifications....................37 7.4 Table 4 General Specifications ......................38 8 TROUBLE SHOOTING ........................39...
Page 5: About This Manual
User Manual POW-LVM2.4K-24V 1 ABOUT THIS MANUAL 1.1 Purpose This manual describes the assembly, installation, operation and troubleshooting of this unit. Please read this manual carefully before installations and operations. Keep this manual for future reference. 1.2 Scope This manual provides safety and installation guidelines as well as information on tools and wiring.
Page 6: Safety Instructions
User Manual POW-LVM2.4K-24V 2 SAFETY INSTRUCTIONS WARNING: This chapter contains important safety and operating instructions. Read and keep this manual for future reference. 1. Before using the unit, read all instructions and cautionary markings on the unit, the batteries and all appropriate sections of this manual.
Page 7: Introduction
User Manual POW-LVM2.4K-24V 3 INTRODUCTION This is a multi-function inverter/charger, combining functions of inverter, solar charger and battery charger to offer uninterruptible power support with portable size. Its comprehensive LCD display offers user-configurable and easy-accessible button operation such as battery charging current, AC/solar charger priority, and acceptable input voltage based on different applications.
Page 8: Basic System Architecture
User Manual POW-LVM2.4K-24V 3.2 Basic System Architecture The following illustration shows basic application for this inverter/charger. It also includes 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.
Page 9: Product Overview
User Manual POW-LVM2.4K-24V 3.3 Product Overview 1. LCD display 8. AC output 2. Status indicator 9. PV input 3. Charging indicator 10. Battery input 4. Fault indicator 11. Circuit breaker 5. Function buttons 12. RS232 communication port 6. Power on/off switch 13.
Page 10: Installation
User Manual POW-LVM2.4K-24V 4 INSTALLATION 4.1 Unpacking and Inspection Before installation, please inspect the unit. Be sure that nothing inside the package is damaged You should have received the following items inside of package: ⚫ The unit x 1 ⚫ Communication cable x 1 ⚫...
Page 11 User Manual POW-LVM2.4K-24V Install the unit by screwing three screws. It's recommended to use M4 or M5...
Page 12: Wiring
User Manual POW-LVM2.4K-24V 5 WIRING 5.1 Battery Connection Recommended battery cable and terminal size: Ring Terminal Tytical Battery Torque Model Wire Size Cable Dimensions Amperage capacity value (mm²) D(mm) L(mm) 1*4 AWG 33.2 100Ah 2.4KW 100A 2~3Nm 200Ah 2*8 AWG 29.2...
Page 13 User Manual POW-LVM2.4K-24V NOTE: Please only use sealed lead acid battery or sealed GEL/AGM lead-acid battery 3. Insert the ring terminal of battery cable flatly into battery connector of inverter and make sure the bolts are tightened with torque of 2-3 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.
Page 14: Ac Input/Output Connection
User Manual POW-LVM2.4K-24V 5.2 AC Input/Output Connection Model Gauge Torque Value 2.4KW 10 AWG 1.2~1.6 Nm WARNING ⚫ All wiring must be performed by a qualified personnel. ⚫ It's very important for system safety and efficient operation to use appropriate cable for AC input connection.
Page 15 User Manual POW-LVM2.4K-24V 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 terminal block and tighten terminal screws. Be sure to connect PE protective conductor ( ) first.
Page 16: Pv Connection (Only Apply For The Model With Solar Charger)
User Manual POW-LVM2.4K-24V 5.3 PV Connection (Only apply for the model with solar charger) Model Typical Amperage Gauge Torque Value 2.4KW 8 AWG 1.4~1.6 Nm WARNING ⚫ All wiring must be performed by a qualified personnel. ⚫ It's very important for system safety and efficient operation to use appropriate cable for PV module connection.
Page 17 User Manual POW-LVM2.4K-24V Note ⚫ Vmp: panel max power point voltage. The PV charging efficiency is maximized while PV system voltage is close to Best Vmp. ⚫ Maximum PV module numbers in Series: Vmpp of PV module * X pcs ≒ Best Vmp of Inverter or Vmp ⚫...
Page 18: Final Assembly
User Manual POW-LVM2.4K-24V 5.4 Final Assembly After connecting all wirings, please put bottom cover back by screwing two screws as shown below.
Page 19: Communication Connection
User Manual POW-LVM2.4K-24V 5.5 Communication Connection Please use supplied communication cable to connect to inverter and PC. Insert bundled CD into a computer and follow on-screen instruction to install the monitoring software. For the detailed software operation, please check user manual of software inside of CD.
Page 20: Operation
User Manual POW-LVM2.4K-24V 6 OPERATION 6.1 Power ON/OFF Once the unit has been properly installed and the batteries are connected well, simply press On/Off switch (located on the button of the case) to turn on the unit. 6.2 Operation and Display Panel The operation and display panel, shown in below chart, is on the front panel of the inverter.
Page 21: Lcd Display Icons
User Manual POW-LVM2.4K-24V ➢ LED Indicator LED Indicator Message Solid On Output is powered by utility in Line mode. Green Flashing Output is powered by battery or PV in battery mode Solid On Battery is fully charged Green Flashing Battery is charging Solid On Fault occurs in the inverter.
Page 22 User Manual POW-LVM2.4K-24V 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.
Page 23 User Manual POW-LVM2.4K-24V 1.817 V/cell~1.9 V/cell 1.9~1.983 V/cell >1.983 V/cell <1.867 V/cell 1.867 V/cell~1.95 V/cell Load < 20% 1.95~2.033 V/cell >2.033 V/cell Load Information Indicates overload. Indicates the load level by 0-24%, 25-50%, 50-74% and 75-100% 0%~25% 25%~50% 50%~75% 75%~100% Mode Operation Information Indicates unit connects to the mains.
Page 24: Lcd Setting
User Manual POW-LVM2.4K-24V 6.4 LCD Setting After pressing and holding ENTER button for 3 seconds, the unit will enter setting mode. Press "UP" or "DOWN" button to select setting programs. And then, press "ENTER" button to confirm the selection or ESC button to exit.
Page 25 User Manual POW-LVM2.4K-24V Utility provides power to the loads only when battery voltage drops to either low level warning voltage or the setting point in program 12. Maximum charging current: To configure total charging current 50A(default) for solar and utility Setting range: 20-80A, Increment of chargers.
Page 26 User Manual POW-LVM2.4K-24V Restart disable Restart enable (default) Auto restart when overload occurs Restart disable Restart enable (default) Auto restart when over temperature occurs 50Hz(default) 60Hz Output frequency Maximum utility charging current Note: If setting value in program 02 is...
Page 27 User Manual POW-LVM2.4K-24V Solar energy will charge battery as Solar first first priority. Utility will charge battery only when solar energy is not available. Utility will charge battery as first Utility first priority. Solar energy will charge battery only when utility power is not Charger source available.
Page 28 User Manual POW-LVM2.4K-24V Alarm on (default) Alarm off Beeps while primary source is interrupted Overload bypass: Bypass disable When enabled, the Bypass enable (default) unit will transfer to line mode if overload occurs in battery mode. Record enable Record disable (default) Record Fault code 2.4KW default setting: 28.2V...
Page 29 User Manual POW-LVM2.4K-24V Enable Disable(default) Battery equalization If "Flooded" or "User-Defined" is selected in program 05, this program can be set up. 2.4KW default setting: 29.2V Battery equalization voltage Setting range is from 25.0V to 30 V. Increment of each click is 0.1V.
Page 30: Display Setting
User Manual POW-LVM2.4K-24V 6.5 Display Setting The LCD display information will be switched in turns by pressing "UP" or "DOWN" key. The selectable information is switched as below order: input voltage, input frequency, PV voltage, charging current, battery voltage, output voltage, output frequency, load percentage, load in Watt, load in VA, load in Watt, DC discharging current, main CPU Version and second CPU Version.
Page 31 User Manual POW-LVM2.4K-24V Battery voltage=25.5V, discharging current=1A Battery voltage/ DC discharging current Output frequency=50Hz Output frequency Load percent=70% Load percentage When connected load is lower than 1kVA, load in VA will present xxx VA like below chart. Load in VA When load is larger than 1kVA (≥1KVA), load in VA...
Page 32 User Manual POW-LVM2.4K-24V When load is lower than 1kW, load in W will present xxxW like below chart. Load in Watt When load is larger than 1kW (≥1KW), load in W will present x.xkW like below chart. Main CPU version 00014.04...
Page 33: Operating Mode Description
User Manual POW-LVM2.4K-24V 6.6 Operating Mode Description Operation mode Description LCD display Charging by utility and PV energy. Standby mode / Power saving mode Note: Charging by utility *Standby mode: The inverter is not turned on yet but at this time, the inverter...
Page 34 User Manual POW-LVM2.4K-24V No charging. Charging by utility and PV energy. The unit will provide output power from Line Mode the mains. It will also Charging by utility charge the battery at line mode. Power from battery and PV energy...
Page 35: Battery Equalization Description
User Manual POW-LVM2.4K-24V 6.7 Battery Equalization Description 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.
Page 36 User Manual POW-LVM2.4K-24V ⚫ 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.
Page 37: Fault Reference Code
User Manual POW-LVM2.4K-24V 6.8 Fault Reference Code Fault Code Fault Event Icon on Fan is locked when inverter is off. Over temperature Battery voltage is too high Battery voltage is too low Output short circuited or over temperature is detected by internal converter components.
Page 38: Warning Indicator
User Manual POW-LVM2.4K-24V 6.9 Warning Indicator Warning Code Warning Event Audible Alarm Icon flashing Fan is locked when Beep three times every inverter is on second Battery is over-charged Beep once every second Low battery Beep once every second Overload Beep once every 0.5 second...
Page 39: Specifications
User Manual POW-LVM2.4K-24V 7 SPECIFICATIONS 7.1 Table 1 Line Mode Specifications INVERTER MODEL POW-LVM2.4K-24V Input Voltage Waveform Sinusoidal (utility or generator) Nominal Input Voltage 120Vac Low Loss Voltage 95Vac±7V(UPS); 65Vac±7V (Appliances) Low Loss Return Voltage 100Vac±7V(UPS); 70Vac±7V (Appliances) High Loss Voltage 140Vac±7V...
Page 40 User Manual POW-LVM2.4K-24V 7.2 Table 2 Inverter Mode Specifications INVERTER MODEL POW-LVM2.4K-24V Rated Output Power 3KVA/2.4KW Output Voltage Waveform Pure Sine Wave Output Voltage Regulation 120Vac±5% Output Frequency 60Hz Peak Efficiency Overload Protection 5s@≥150% load; 10s@110%~150% load Surge Capacity 2 * rated power for 5 seconds...
Page 41 User Manual POW-LVM2.4K-24V 7.3 Table 3 Charge Mode Specifications INVERTER MODEL POW-LVM2.4K-24V Charging Algorithm 3-Step Utility Charging Mode AC Charging Current 20/30Amp(@V =120Vac ) Bulk Flooded Battery 29.2 Charging AGM / Gel Battery 28.2 Voltage Floating Charging Voltage 27Vdc Charging Curve...
Page 42 User Manual POW-LVM2.4K-24V 7.4 Table 4 General Specifications INVERTER MODEL POW-LVM2.4K-24V Safety Certification Operating Temperature Range 0℃ to 55℃ Storage temperature -15℃~60℃ Dimension (D* W* H) 100x272x355 mm Net Weight 6.9 kg...
Page 43: Troubleshooting
User Manual POW-LVM2.4K-24V 8 TROUBLE SHOOTING Explanation / Problem LCD/LED/Buzzer What to do Possible cause LCD/LEDs and Unit shuts down buzzer will be automatically The battery voltage is 1. Re-charge battery active for 3 during startup too low (<1.91V/Cell) 2. Replace battery seconds and then process.
Page 44 User Manual POW-LVM2.4K-24V Overload error. The Reduce the connected Fault code 07 inverter is overload load by switching off 110% and time is up. some equipment. Check if wiring is Output short circuited connected well and remove abnormal load. Fault code 05...
Page 45: Appendix: Approximate Back-Up Time Table
User Manual POW-LVM2.4K-24V 9 Appendix: Approximate Back-up Time Table Backup Time @24Vdc 100Ah Backup Time @24Vdc 200Ah Load Model (VA) (min) (min) 1100 1200 1500 2.4KW 1800 2100 2400 2700 3000 Note: Backup time depends on the quality of the battery, age of battery and type of battery.
Page 46 User Manual POW-LVM2.4K-24V...

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