Axpert MKS III User Manual
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Axpert MKS III User Manual

5kw with mppt solar charger
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User Manual
5KW with MPPT Solar Charger
Inverter/Charger
Version: 1.2

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  • Page 1 User Manual 5KW with MPPT Solar Charger Inverter/Charger Version: 1.2...

  • Page 2: Table Of Contents

    Table Of Contents ABOUT THIS MANUAL ............................1 Purpose ................................1 Scope ................................1 SAFETY INSTRUCTIONS ........................... 1 INTRODUCTION ..............................2 Product Overview ............................. 3 INSTALLATION ..............................4 Unpacking and Inspection..........................4 Preparation ..............................4 Mounting the Unit ............................. 4 Battery Connection ............................

  • 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 off-grid PV inverter can provide power to connected loads by utilizing PV power, utility power and battery power. Figure 1 Basic PV System Overview Depending on different power situations, this inverter is designed to generate continuous power from PV solar modules (solar panels), battery, and the utility.

  • Page 5: Product Overview

    Product Overview NOTE: For parallel model installation and operation, please check separate parallel installation guide for the details. LCD display Status indicator Charging indicator Fault indicator Function buttons Power on/off switch AC input connectors AC output connectors (Load connection) PV connectors 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 of package: Inverter unit Software CD Manual Communication 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

    Be sure to connect PE protective conductor ( ) first. →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. If L and N wires are connected reversely, it may cause utility short-circuited when these inverters are worked in parallel operation.

  • Page 10: Final Assembly

    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: Communication Connection

    Communication Connection Serial 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. Bluetooth Connection This unit is equipped with a Bluetooth transmitter.

  • Page 12: 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 display panel) to turn on the unit. Operation and Display Panel The operation and display panel, shown in below chart, is on the front panel of the inverter. It includes six indicators, six function keys, on/off switch and a LCD display, indicating the operating status and input/output power information.

  • Page 13: Lcd Display Icons

    Function Keys Function Key Description Exit setting mode USB function setting Select USB OTG functions To last selection Down To next selection Enter To confirm the selection in setting mode or enter setting mode LCD Display Icons Icon Function description Input Source Information Indicates the AC input.
  • Page 14 In battery mode, it will present battery capacity. Load Percentage Battery Voltage LCD Display < 1.85V/cell 1.85V/cell ~ 1.933V/cell Load >50% 1.933V/cell ~ 2.017V/cell > 2.017V/cell < 1.892V/cell 1.892V/cell ~ 1.975V/cell Load < 50% 1.975V/cell ~ 2.058V/cell > 2.058V/cell Load Information Indicates overload.

  • Page 15: Lcd Setting

    LCD Setting General Setting ” After pressing and holding “ button for 3 seconds, the unit will enter setting mode. Press “ ” or “ ” button to select setting programs. And then, press “ ” button to confirm the selection or “ ”...
  • Page 16 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 connected (default) load is low or high, the on/off status of inverter output will not be effected.
  • Page 17 Soltaro battery If selected, programs of 02, 26, 27 and 29 will be automatically set up. No need for further setting. BAK battery If selected, programs of 02, 26, 27 and 29 will be automatically set up. No need for further setting. Restart disable (Default) Restart enable Auto restart when overload...
  • Page 18 current from program 02 30A (Default) for utility charger. default setting: 46V Setting range is from 44V to 57V and increment of each click is 1V. Setting voltage point back to utility source when selecting “SBU” (SBU priority) or “SUB” (solar 5% (default) If “WECO battery”...
  • Page 19 default setting: 54V 10% (default) If “WECO battery” is selected in program 5, this parameter value will be displayed in percentage and value setting is based on battery capacity percentage. The setting range is from 10% to 100%. Increment of each click is 5%. If this inverter/charger is working in Line, Standby or Fault mode, charger source can be programmed as below: Solar first...
  • Page 20 Alarm on (Default) Alarm off Alarm control Return to default display If selected, no matter how users screen (Default) switch display screen, it will automatically return to default display screen (Input voltage /output voltage) after no button is pressed for 1 minute. Auto return to default display screen Stay at latest screen...
  • Page 21 Record enable Record disable (Default) Record Fault code default setting: 56.4V If self-defined is selected in program 5, this program can be set up. Setting range is from 48.0V Bulk charging voltage to 64.0V. Increment of each click is (C.V voltage) 0.1V.
  • Page 22 If selected, inverter will judge this Automatically (Default): charging time automatically. The setting range is from 5 min to 5 min 900 min. Increment of each click is 5 min. Bulk charging time (C.V stage) 900 min If “USE” is selected in program 05, this program can be set up. Battery equalization Battery equalization disable (Default)
  • Page 23 30days (Default) Setting range is from 0 to 90 days. Increment of each click is 1 day Equalization interval Enable Disable (Default) Equalization activated immediately 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 “...
  • Page 24 For minute setting, the range is from Time setting – Minute 00 to 59. For hour setting, the range is from 00 Time setting – Hour to 23. For day setting, the range is from 00 Time setting– Day to 31. For month setting, the range is from Time setting–...
  • Page 25 This function is to over-write all parameter settings (TEXT file) with settings in the On-The-Go USB disk from a previous setup or to duplicate inverter settings. Please check with your dealer Re-write or installer for detail instructions. internal parameters Press “ ”...
  • Page 26 Press “ ” button to set up Solar First Timer. Press “ ” button to select staring time. Press “ ” or “ ” button to adjust values and press “ ” to confirm. Press “ ” button to select end time. Press “ ”...

  • Page 27: Display Setting

    Display Setting The LCD display information will be switched in turns by pressing “ ” or “ ” key. The selectable information is switched as the following table in order. Selectable information LCD display Input Voltage=230V, output voltage=230V Input voltage/Output voltage (Default Display Screen) Input frequency=50Hz Input frequency...
  • Page 28 AC and PV charging current=50A PV charging current=50A Charging current AC charging current=50A AC and PV charging power=500W PV charging power=500W Charging power AC charging power=500W Battery voltage=50.0V, output voltage=230V Battery voltage and output voltage...
  • Page 29 Output frequency=50Hz Output frequency Load percent=70% Load percentage When connected load is lower than 1kVA, load in VA will present xxxVA like below chart. Load in VA When load is larger than 1kVA (≧1KVA), load in VA will present x.xkVA like below chart. When load is lower than 1kW, load in W will present xxxW like below chart.
  • Page 30 PV energy generated Today = 3.88kWh, Load output energy Today = 9.88kWh. PV energy generated today and Load output energy today PV energy generated this month = 388kWh, Load output energy this month = 988kWh. PV energy generated this month and Load output energy this month.
  • Page 31 Main CPU version 00014.04. Main CPU version checking. Secondary CPU version 00001.23. Secondary CPU version checking. Bluetooth version 00001.03. Bluetooth version checking.

  • Page 32: Operating Mode Description

    Operating Mode Description Operating mode Behaviors LCD display Battery is charged by utility. Standby mode / Power saving mode Battery is charged by PV energy. Note: *Standby mode: The inverter is not turned on yet but at No output is supplied this time, the inverter can by the unit but it still charge battery without AC...
  • Page 33 Charging by utility and PV energy. Charging by utility. Output power from Line mode utility. Charger is available. Battery is not connected, solar energy and the utility will provide the loads. Power from utility. Output power from Line mode utility. Charger is available.

  • Page 34: Faults Reference Code

    Faults 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. Output voltage is too high.

  • Page 35: 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 36 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.

  • Page 37: Specifications

    SPECIFICATIONS Table 1 Line Mode Specifications INVERTER MODEL 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±...
  • Page 38 Table 2 Inverter Mode Specifications INVERTER MODEL Rated Output Power 5KVA/5KW Pure Sine Wave Output Voltage Waveform 230Vac± 5% 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 39 Table 3 Charge Mode Specifications Utility Charging Mode INVERTER MODEL Charging Current (UPS) @ Nominal Input Voltage Flooded 58.4 Bulk Charging Battery Voltage AGM / Gel 56.4 Battery Floating Charging Voltage 54Vdc Overcharge Protection 64Vdc Charging Algorithm 3-Step 2.43Vdc (2.35Vdc) Voltage 2.25Vdc Charging Curve...

  • Page 40: 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.

  • Page 41: Appendix I: Parallel Function

    Appendix I: Parallel function 1. Introduction This inverter can be used in parallel with two different operation modes. 1. Parallel operation in single phase with up to 9 units. The supported maximum output power is 45KW/45KVA. 2. Maximum nine units work together to support three-phase equipment. Seven units support one phase maximum.
  • Page 42 Step 3: Remove two screws as below chart to take out cover of parallel communication. Step 4: Install new parallel board with 2 screws tightly. Step 6: Connect 2-pin to original position. Step 7: Put communication board back to the unit. Step 8: Put wire cover back to the unit.
  • Page 43 4. 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. 5.
  • Page 44 Recommended breaker specification of battery for each inverter: Model 1 unit* 80A/70VDC *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: 2 units 3 units...
  • Page 45 5-1. Parallel Operation in Single phase Two inverters in parallel: Power Connection Load Communication Connection Three inverters in parallel: Power Connection Load Communication Connection...
  • Page 46 Four inverters in parallel: Power Connection Load Communication Connection Five inverters in parallel: Power Connection Load Communication Connection...
  • Page 47 Six inverters in parallel: Power Connection Load Communication Connection Seven inverters in parallel: Power Connection Load Communication Connection ❶ ❷ ❸ ❹ ❺ ❻ ❼...
  • Page 48 Eight inverters in parallel: Power Connection Load Communication Connection ❸ ❹ ❺ ❻ ❼ ❽ ❶ ❷ Nine inverters in parallel: Power Connection Load Communication Connection ❸ ❹ ❺ ❻ ❼ ❽ ❾ ❶ ❷ 5-2. Support 3-phase equipment Three inverters in each phase: Power Connection Load Communication Connection...
  • Page 49 Three inverters in one phase, three inverters in second phase and two inverter for the third phase: Power Connection Load Communication Connection ❶ ❷ ❸ ❹ ❺ ❻ ❼ ❽ Three inverters in one phase, two inverters in second phase and two inverters for the third phase: Power Connection Load Communication Connection...
  • Page 50 Two inverters in each phase: Power Connection Load Communication Connection Seven inverters in one phase and one inverter for the other two phases: Power Connection Load Note: It’s up to customer’s demand to pick 7 inverters on any phase. P1: L1-phase, P2: L2-phase, P3: L3-phase. Communication Connection ①...
  • Page 51 Four inverters in one phase and one inverter for the other two phases: Power Connection Load Communication Connection Three inverters in one phase, two inverters in second phase and one inverter for the third phase: Power Connection Load...
  • Page 52 Communication Connection Three inverters in one phase and only one inverter for the remaining two phases: Power Connection Load Communication Connection Two inverters in two phases and only one inverter for the remaining phase: Power Connection Load...
  • Page 53 Communication Connection Two inverters in one phase and only one inverter for the remaining phases: Power Connection Load Communication Connection One inverter in each phase: Power Connection Load...
  • Page 54 Communication Connection WARNING: Do not connect the current sharing cable between the inverters which are in different phases. Otherwise, it may damage the inverters. 6. PV Connection Please refer to user manual of single unit for PV Connection. CAUTION: Each inverter should connect to PV modules separately.
  • Page 55 7. LCD Setting and Display Setting Program: Program Description Selectable option Single: When the units are used in parallel with single phase, please select “PAL” in program Parallel: It is required to have at least 3 inverters or maximum 6 inverters to support three-phase equipment.
  • Page 56 8. 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”...
  • Page 57 Step 5: If there is no more fault alarm, the system to support 3-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.

  • Page 58: Appendix Ii: Bms Communication Installation

    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.
  • Page 59 3. Installation and Operation PYLONTECH After configuration, please install LCD panel with inverter and Lithium battery with the following steps. Step 1. Use a custom-made RJ45 cable to connect inverter and Lithium battery. Please take notice for parallel system: 1. Only support common battery installation. 2.
  • Page 60 WECO Step 1. Use a custom-made RJ45 cable to connect inverter and Lithium battery. Please take notice for parallel system: 1. Only support common battery installation. 2. Use one custom-made RJ45 cable to connect any inverter (no need to connect to a specific inverter) and Lithium battery.
  • Page 61 SOLTARO Step 1. Use a custom-made RJ45 cable to connect inverter and Lithium battery. Please take notice for parallel system: 1. Only support common battery installation. 2. Use one custom-made RJ45 cable to connect any inverter (no need to connect to a specific inverter) and Lithium battery.
  • Page 62 Step 1. Use custom-made RJ45 cable to connect inverter and Lithium battery. Please take notice for parallel system: 1. Only support common battery installation. 2. Use one custom-made RJ45 cable to connect any inverter (no need to connect to a specific inverter) and Lithium battery.
  • Page 63 4. LCD Display Information Press “UP” or “DOWN” key to switch LCD display information. It will show battery pack and battery group number before “Main CPU version checking” as below screen. Selectable information LCD display Battery pack numbers & Battery Battery pack numbers = 3, battery group numbers = 1 group numbers 5.

  • Page 64: Appendix Iii: Approximate Back-Up Time Table

    Appendix III: 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 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.

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