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

Inverter / charger
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User Manual
LV 5KVA-48V
INVERTER / CHARGER
Version: 1.0

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Summary of Contents for Axpert MLV-5KW-48V

  • Page 1 User Manual LV 5KVA-48V INVERTER / CHARGER Version: 1.0...

  • 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 input 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 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 x 1  User manual x 1  Communication cable x 1 ...

  • Page 8: Battery Connection

    Battery Connection CAUTION: For safety operation and regulation compliance, it’s requested to install a separate DC over-current protector or disconnect the device between battery and inverter. It may not be necessary to disconnect the device for some applications, however, it’s requested to have over-current protection installed. Please refer to the typical amperage in the table below as required fuse or size of the breaker.

  • Page 9: 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 any anti-oxidant substance on the terminals before the terminals are connected tightly.
  • Page 10 When the phase angle between L1 and L2 is 0°. 120V 120V Grid Load connection MLV 5KW Output 120V 120V When the phase angle between L1 and L2 is 120°. 120V 120V Grid Load 208V 208V connection MLV 5KW Output 120V 120V When the phase angle between L1 and L2 is 180°.

  • Page 11: Pv Connection

    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 fasten the terminal screws. Be sure to connect PE protective conductor ( ) first.

  • Page 12: Final Assembly

    and PV modules. 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 PV module connection. To reduce risk of injury, please use the recommended cable size as below. NOTICE! When only one MPPT is used, please use MPPT1 first.

  • Page 14: Communication Connection

    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. Dry Contact Signal There is one dry contact (3A/120VAC) available on the rear panel.

  • Page 15: 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 right corner of the rear panel) 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 16: Lcd Display Icons

    LCD Display Icons Icon Function description Input Source Information Indicates the AC input. Indicates the PV input Indicates the input 1, output 1. Indicates the input 2, output 2. Indicates input voltage, input frequency, PV voltage, battery voltage and charger current. Configuration Program and Fault Information Indicates the setting programs.
  • Page 17 Voltage mode Bottom three bars will be on and the top > 2.167 V/cell 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 <...

  • Page 18: Lcd Setting

    Mute Operation Indicates the alarm is disabled. 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.
  • Page 19 100A 110A 130A (only for 5KVA with MPPT 120A models) Maximum charging current: To configure the 140A 150A total charging current for solar and utility chargers. (Max. charging current = utility charging current + solar charging current) 160A 170A 180A 190A 200A 210A...
  • Page 20 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 21 Battery fully charged 48.0V 49.0V 50.0V 51.0V 52.0V 53.0V Setting voltage point back to battery mode when selecting “SBU priority” or “Solar first” in program 01. 54.0V 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 22 Alarm on (default) Alarm off Alarm control 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 23 sure that on/off switch is Phase 2 of 3 Phase output Phase 3 of 3 Phase output in “OFF” status. Parallel output (120°) parallel output(180°) Default setting: 42.0V Low DC cut-off voltage If self-defined is selected in program 5, this program can be set up.
  • Page 24 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 25: 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 26 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 27: Operating Mode Description

    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 Operating Mode Description...
  • Page 28 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 29: Fault Reference Code

    power from battery and PV power. Power from battery only. 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 30: Warning Indicator

    Warning Indicator Warning Warning Event Audible Alarm Icon flashing Code 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 Output power derating Beep twice every 3 seconds Solar charger stops due...

  • Page 31: 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±7V High Loss Return Voltage 135Vac±7V...

  • Page 32: Table 2: Inverter Mode Specifications

    Table 2: Inverter Mode Specifications INVERTER MODEL 5KVA 5KVA/5KW Rated Output Power Pure Sine Wave Output Voltage Waveform Output Voltage Regulation 110/120Vac(L-N or L1-N-L2) 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 33: Table 3: Charging Mode Specifications

    Table 3: Charging Mode Specifications Utility Charging Mode INVERTER MODEL 5KVA Charging Current (UPS) 2A/10A/20A/30A/40A/50A/60A @ Nominal Input Voltage Bulk Flooded Battery 58.4Vdc Charging AGM / Gel 56.4Vdc Voltage Battery Floating Charging Voltage 54Vdc Overcharge Protection 60Vdc Charging Algorithm 3-Step Charging Curve Solar Charging Mode(Per number of MPPT) 5KVA...

  • Page 34: Table 4 General Specifications

    Table 4 General Specifications INVERTER MODEL 5KVA Safety Certification 0°C to 55°C Operating Temperature Range Storage temperature -15°C~ 60°C Dimension (D*W*H), mm 130 x 622.6 x 610 Net Weight, kg...

  • Page 35: 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 36: 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 37: 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 38 5KVA 2*4AWG 5~ 6 Nm Recommended cable size of AC input and output for each inverter: Model AWG no. Torque 5KVA 10 AWG 1.4~1.6Nm 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 it to the battery terminal.
  • Page 39 4-1. Parallel Operation in Single phase Two inverters in parallel(0°): Power Connection L1 L2 L1 L2 Load Communication Connection ❶ ❷ Three inverters in parallel(0°): Power Connection...
  • Page 40 Communication Connection...
  • Page 41 4-2. Support 2-phase equipment Two inverters in parallel (120°): Power Connection Load Communication Connection Two inverters in parallel (180°): Power Connection...
  • Page 42 Load Communication Connection Three inverters in parallel (120°): Power Connection...
  • Page 43 Load Communication Connection Three inverters in parallel (180°): Power Connection Load Communication Connection...
  • Page 44 4-3. Support 3-phase equipment One inverter in each phase : Power Connection Communication Connection 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 45 6. LCD Setting and Display Setting Program: Program Description Selectable option parallel output(0°) Phase 1 of 3 Phase When the units are used in parallel with output single phase, please select “2A0”、 “2A1”and “2A3” in program 28. It is required to have at least 3 inverters or maximum 6 inverters to support Phase 2 of 3 Phase three-phase equipment.
  • Page 46 When “ALL” is selected, parallel or 3-phase system will continue working according to rule of “solar first” setting only when all of inverters are connected to PV modules. For example, two units are connected in All of Inverters: parallel and set “SOL” in output source priority.
  • Page 47 Fault code: Fault Code Fault Event Icon on Power feedback protection Firmware version inconsistent Current sharing fault CAN fault Host loss Synchronization loss Battery voltage detected different Different AC input voltage and frequency detected AC output current unbalance AC output mode setting is different 7.
  • Page 48 Step 4: Switch on all AC breakers of Line wires in AC input. It’s better to connect all of the inverters to the utility at the same time. If not, it will display fault 82 in the following inverters. However, these inverters will automatically restart.
  • Page 49 8. 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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