Axpert MLV 5KVA-48V User Manual
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Axpert MLV 5KVA-48V User Manual

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User Manual
AXPERT MLV 5KVA-48V
INVERTER / CHARGER
Version: 1.1

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Summary of Contents for Axpert MLV 5KVA-48V

  • Page 1 User Manual AXPERT MLV 5KVA-48V INVERTER / CHARGER Version: 1.1...

  • 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 INSTALLATION ..............................4 Unpacking and Inspection..........................4 Preparation ..............................

  • 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-functional inverter/charger, combining the functions of inverter, MPPT solar charger and battery charger to offer uninterruptible power support with portability. Its comprehensive LCD display offers user-configurable and easy-accessible button operation such as battery charging current, priority setting for AC/solar charger, and acceptable input voltage setting to suit different applications.

  • Page 5: Product Overview

    Product Overview 1. Battery connector 2. Power on/off switch 3. Dry contact 4. USB communication port 5. RS232 communication port 6. PV input 7. Parallel communication port (only for parallel model) 8. Current sharing port (only for parallel model) 9. Parallel ID (Please check chapter 6 in Parallel Function for setting details.) 10.

  • Page 6: Installation

    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 Mounting plate Fixing screws RS-232 cable USB cable Software CD User manual Current sharing cable Parallel communication cable...

  • Page 7: Battery Connection

    Install the unit by screwing four screws as shown in the diagram. It’s recommended to use M5 screws. 1. Drill four holes in the marked locations with 4 2. Raise the inverter and place it over the mounting screws. The reference tightening torque is 35 plate.
  • Page 8 4. Connect all battery packs as below chart. Inverter 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.

  • Page 9: Ac Input/Output Connection

    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. The recommended spec of AC breaker is 40A for 5KVA.
  • Page 10 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 from the six conductors. And short-circuit phase L and neutral conductor N 3 mm.

  • Page 11: Pv Connection

    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 are required at least 2~3 minutes to restart because it’s required to have enough time to balance refrigerant gas inside of circuits.

  • Page 12: Final Assembly

    Final Assembly After connecting all wirings, please put the bottom cover back by fixing two screws as shown below. Communication Connection Please use supplied communication cable to connect to inverter and PC. Insert bundled CD into a computer and follow the on-screen instructions to install the monitoring software. For the detailed software operations, please check user manual of software inside the CD.

  • 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 (located on the bottom of the inverter) to turn on the unit. Operation and Display Panel The operation and display panel, as shown in the chart below, are 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.

  • Page 14: Lcd Display Icons

    LCD Display Icons Icon Function description Input Source Information Indicates the AC input. Indicates the PV input Indicates the input 1 and output 1 data. Indicates the input 2 and output 2 data. Indicates input voltage, input frequency, PV voltage, battery voltage and charger current.
  • Page 15 bar will flash. In floating mode, batteries are fully charged. 4 bars will be on. In battery mode, it will present battery capacity. Load Percentage Battery Voltage LCD Display < 1.717V/cell 1.717V/cell ~ 1.8V/cell Load >50% 1.8 ~ 1.883V/cell > 1.883 V/cell <...

  • Page 16: Lcd Setting

    LCD Setting After pressing and holding the 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. Setting Programs: Program Description...
  • Page 17 60A (default) 100A 110A 120A 130A Maximum charging 140A 150A current: To configure the total charging current for solar and utility chargers. (Max. charging current = utility charging current + 160A 170A solar charging current) 180A 190A 200A 210A 220A Appliances (default) If selected, acceptable AC input voltage range will be within...
  • Page 18 User-Defined If “User-Defined” is selected, battery charge voltage and low DC cut-off voltage can be set up in program 26, 27 and 29. Restart disable Restart enable (default) Automatically restart when overload occurs Restart disable Restart enable (default) Automatically restart when over temperature occurs 110V 120V (default)
  • Page 19 Battery fully charged 48.0V 49.0V 50.0V 51.0V 52.0V Setting voltage point back to battery mode when selecting “SBU priority” or 53.0V 54.0V “Solar first” in program 01. 55.0V 56.0V 57.0V 58.0V If this inverter/charger is working in Line, Standby or Fault mode, charger source can be programmed as below: Solar first Solar energy will charge battery as...
  • Page 20 Return to default If selected, no matter how users display screen switch display screen, it will (default) automatically return to default display screen (Input voltage /output voltage) Automatically return to after no button is pressed for 1 default display screen minute.
  • Page 21 Support L2 phase output Support L3 phase output on on 3-Phase application. 3-Phase application. Output voltage Output voltage is 120V. is 120V. AC output mode *This setting is able to set up only when the inverter Support L1/L2 phase output on split Support L1/L2 phase is in standby mode.
  • Page 22 If selected, solar input power will be Solar power balance automatically adjusted according to enable (Default): the following formula: Max. input solar power = Max. battery charging power + Solar power balance: Connected load power. When enabled, solar input If selected, the solar input power Solar power balance power will be will be the same as max.

  • Page 23: Display Setting

    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 37 setting.
  • Page 24 PV1 voltage=60V , PV1 Power = 200W MPPT Input 1 Charging current / MPPT Input 1 Charging power PV2 voltage=60V ,PV2 Power = 200W MPPT Input 2 Charging current / MPPT Input 2 Charging power Load 1 Watt=200W, Load 1 percent=60% Load 1 Watt/ Load 1 percentage Load 2 Watt=200W, Load 2 percent=60% Load 2 Watt/ Load 2 percentage...
  • Page 25 Load 2 Watt 200W, Load 2 in VA=600VA Load 2 Watt/ Load 2 in VA Charging current=25A, Battery voltage=56.0V DC charging current / Battery voltage Battery voltage=53.0V, discharging current=1A Battery voltage/ DC discharging current Main CPU version 00014.04 Main CPU version checking Secondary CPU version: 00003.03 Secondary CPU version checking...

  • Page 26: Operating Mode Description

    Operating Mode Description Operation mode Description LCD display Charging by utility. Charging by PV energy. Standby mode Note: No output is supplied by the *Standby mode: The inverter unit but it still can charge is not turned on yet but at this Charging by PV energy and utility the batteries.

  • Page 27: Fault Reference Code

    Charging by PV energy Charging by utility. The unit will provide output power from the mains. It Line Mode will also charge the battery in line mode. Charging by PV energy and utility Power from battery and PV energy. The unit will provide output Battery Mode power from battery and PV Power from battery only.

  • Page 28: Warning Indicator

    Over current or surge Bus voltage is too low Inverter soft start failed Over DC voltage in AC output Battery connection is open Current sensor failed Output voltage is too low Internal circuit mismatch Parallel ID missing Parallel ID in conflict Working mode synchronization loss Warning Indicator Warning...

  • Page 29: Specifications

    SPECIFICATIONS Table 1: Line Mode Specifications INVERTER MODEL 5KVA Input Voltage Waveform Sinusoidal (utility or generator) Nominal Input Voltage 110/120Vac(L-N or L1-N-L2) 95Vac± 7V (UPS) Low Loss Voltage 65Vac± 7V (Appliances) 100Vac± 7V (UPS); Low Loss Return Voltage 70Vac± 7V (Appliances) High Loss Voltage 140Vac±...
  • Page 30 Table 2: Inverter Mode Specifications INVERTER MODEL 5KVA 5KVA/5KW Rated Output Power Pure Sine Wave Output Voltage Waveform 110/120Vac(L-N or L1-N-L2) Output Voltage Regulation 60Hz or 50Hz Output Frequency Peak Efficiency Overload Protection 5s@≥150% load; 10s@110%~150% load 2* rated power for 5 seconds Surge Capacity Nominal DC Input Voltage 48Vdc...
  • Page 31 Battery Voltage, per cell Charging Current, % 2.43Vdc (2.35Vdc) Voltage 2.25Vdc 100% Charging Curve T1 = 10* T0, minimum 10mins, maximum 8hrs Current Time Bulk Absorption Maintenance (Constant Current) (Constant Voltage) (Floating) Solar Charging Mode(Per number of MPPT) INVERTER MODEL 5KVA Rated Power 4000 W x 2...

  • Page 32: Troubleshooting

    TROUBLESHOOTING 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 the battery. during startup seconds and then (<1.91V/Cell) 2. Replace the battery. process.

  • Page 33: Appendix I: Approximate Back-Up Time Table

    Appendix I: Approximate Back-up Time Table Model Load (VA) Backup Time @48Vdc 200Ah (min) Backup Time @48Vdc 400Ah (min) 1226 2576 1000 1226 1500 2000 2500 5KVA 3000 3500 4000 4500 5000 Note: Backup time depends on the quality of the battery, age of battery and type of battery. Specifications of batteries may vary depending on different manufacturers.

  • Page 34: Appendix Ii: Parallel Function

    Appendix II: Parallel function 1. Introduction This inverter can be used in parallel with three different operation modes. 1. Parallel operation in single phase with up to three units. The supported maximum output power is 15KW/15KVA. 2. Maximum three units work together to support three-phase equipment. The supported maximum output power is 15KW/15KVA.
  • Page 35 4. Wiring Connection The size of the cable for each inverter is shown as below: WARNING: Be sure the length of all battery cables is the same. Otherwise, there will be voltage difference between inverter and battery which might cause mal-function of the parallel inverters. Recommended battery cable and terminal size for each inverter: Model Wire Size...
  • Page 36 4-1. Parallel Operation in Single phase Two inverters in parallel: Power Connection L1 L2 L1 L2 Load Communication Connection ❶ ❷ Three inverters in parallel: Power Connection L1 L2 L1 L2 L1 L2 Load...
  • Page 37 Communication Connection ❶ ❷ ❸ 4-2. Support 2-phase equipment Two inverters in parallel (Line to Line output voltage is 208V): Power Connection Load Communication Connection ❶ ❷...
  • Page 38 Two inverters in parallel (Line to Line output voltage is 240V): Power Connection Load Communication Connection ❶ ❷ Three inverters in parallel (Line to Line output voltage is 208V): Power Connection Load...
  • Page 39 Communication Connection ❶ ❷ ❸ Three inverters in parallel (Line to Line output voltage is 240V): Power Connection Load Communication Connection ❶ ❷ ❸...
  • Page 40 4-3. Support 3-phase equipment One inverter in each phase Power Connection L1 L2 L1 L2 L1 L2 Load Communication Connection ❶ ❷ ❸ WARNING: Do NOT connect the current sharing cables between the inverters in different phases. Otherwise, it may damage the inverters. NOTE: For parallel model operation, please refer to LCD program 28 5.
  • Page 41 Parallel ID Setting It’s necessary to set up parallel ID for each inverter. Parallel ID * Not used...
  • Page 42 7. LCD Setting and Display Setting Program: Program Description Selectable option Parallel output in single When the units are used in parallel for phase. Output voltage is single phase application, please select “2A0” in program 28. L1 to L2 output 120V.
  • Page 43 When “ONE” is selected, as long as one of the inverters has been connected to PV modules and PV input is normal, parallel or 3-phase system will continue working according to rule of “solar first” setting. For example, two units are connected in One Inverter (Default): parallel and set “SOL”...
  • Page 44 8. Commissioning Parallel in single phase Step 1: Check the following requirements before installation: Correct wire connection  Ensure all breakers in Line wires at load side are open and each Neutral wires of each unit is connected  together. Step 2: Turn on all of the units and configure LCD program 28 as 2A0.
  • Page 45 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 three-phase equipment Step 1: Check the following requirements before installation: Correct wire connection ...
  • Page 46 9. Troubleshooting If the device fails to function as expected, check the list of common faults below before consulting the service center. Situation Fault Solution Fault Event Description Code Restart the inverter. Check if L/N cables are not connected reversely in all inverters. For parallel system in single phase, make sure the current sharing cables Current feedback into are connected to all inverters.

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