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Master Battery MasterPower Omega LV 6KW User Manual

Pv inverter
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User Manual
Omega LV 6KW
PV Inverter
Version: 1.1

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  • Page 1 User Manual Omega LV 6KW PV Inverter Version: 1.1...

  • Page 2: Table Of Contents

    Table Of Contents Introduction ....................1 Important Safety Warning ................. 2 Unpacking & Overview ..................4 3-1. Packing List ..................... 4 3-2. Product Overview ..................4 Installation ...................... 5 4-1. Precaution ....................5 4-2. Selecting Mounting Location ..............5 4.3. Mounting Unit ..................5 Grid (Utility) Connection ...................

  • Page 3: Introduction

    1. Introduction This hybrid PV inverter can provide power to connected loads by utilizing PV power, utility power and battery power. Hybrid inverter Electric grids Distribution Box PV modules Load Battery Figure 1 Basic hybrid PV System Overview Depending on different power situations, this hybrid inverter is designed to generate continuous power from PV solar modules (solar panels), battery, and the utility.

  • Page 4: Important Safety Warning

    2. Important Safety Warning Before using the inverter, please read all instructions and cautionary markings on the unit and this manual. Store the manual where it can be accessed easily. This manual is for qualified personnel. The tasks described in this manual may be performed by qualified personnel only.
  • Page 5 CAUTION! Under high temperature environment, the cover of this inverter could be hot enough to cause skin burns if accidentally touched. Ensure that this inverter is away from normal traffic areas. CAUTION! Use only recommended accessories from installer. Otherwise, not-qualified tools may cause a risk of fire, electric shock, or injury to persons.

  • Page 6: Unpacking & Overview

    3. Unpacking & Overview 3-1. Packing List 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 RS-232 cable Parallel cable Share current wires Manual Software CD 3-2.

  • Page 7: Installation

    4. Installation 4-1. Precaution This hybrid inverter is designed for indoor or outdoor use (IP65), please make sure the installation site meets below conditions: Not in direct sunlight  Not in areas where highly flammable materials are stored.  Not in potential explosive areas. ...
  • Page 8 Fix four screws as shown in the Raise the inverter and place it over chart. The reference tightening the four screws. torque is 35 N.m. 3. Check if the inverter is firmly secured.

  • Page 9: Grid (Utility) Connection

    5. Grid (Utility) Connection 5-1. Preparation NOTE 1: The overvoltage category of the AC input is III. It should be connected to the power distribution. NOTE 2: Before connecting to grid, please install a separate AC breaker between inverter and grid. This will ensure the inverter can be securely disconnected during maintenance and fully protected from over current.

  • Page 10: Generator Connection

    6. Generator Connection There are two functions with this port:  Allows generator input as power source  Allows second AC output connect. This output can be turned On or Off by setting battery voltage. 6-1. Preparation NOTE 1: The overvoltage category of the AC input is III. It should be connected to the power distribution.

  • Page 11: Pv Module (Dc) Connection

    7. PV Module (DC) Connection CAUTION: Before connecting to PV modules, please install separately a DC circuit breaker between inverter and PV modules. NOTE1: Please use 1000VDC/20A circuit breaker. NOTE2: The overvoltage category of the PV input is II. Please follow below steps to implement PV module connection: WARNING: Because this inverter is non-isolated, only types of PV modules are acceptable: single crystalline and poly crystalline with class A-rated.
  • Page 12 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 proper recommended cable size as below. Conductor cross-section (mm AWG no. CAUTION: Never directly touch terminals of the inverter. It will cause lethal electric shock.
  • Page 13 Recommended Panel Configuration Specifications Solar panel Nominal Max. Power (Pmax) (W) Opt. Operating Voltage (Vmp) (V) 40.3 41.3 41.6 41.9 Opt. Operating Current (Imp) (A) 10.68 11.02 12.5 12.77 Open Circuit Voltage (Voc) (V) 48.3 49.3 49.14 49.44 Short Circuit Current (Isc) (A) 11.37 11.66 13.23...

  • Page 14: Battery Connection

    8. Battery Connection CAUTION: Before connecting to batteries, please install separately a DC circuit breaker between inverter and batteries. NOTE1: Please only use sealed lead acid battery, vented and Gel battery. Please check maximum charging voltage and current when first using this inverter. If using Lithium iron or Nicd battery, please consult with installer for the details.

  • Page 15: Load (Ac Output) Connection

    WARNING! Wrong connections will damage the unit permanently. Step 4: Make sure the wires are securely connected. The reference tightening torque is 5.5~7.0 N.m. WARNING! It's very important for system safety and efficient operation to use appropriate cable for battery connection. To reduce risk of injury, please use the proper recommended cable size as below.
  • Page 16 The reference tightening torque is 1.0-1.5 N.m. Step 4: Make sure the wires are securely connected. CAUTION: Do NOT connect the utility to “AC Output Connector (Load connector)”. CAUTION: Be sure to connect L terminal of load to L terminal of “AC Output Connector(Load connector)”...

  • Page 17: Communication

    9. Communication The inverter is equipped with several communication ports and it is also equipped with a slot for alternative communication interfaces in order to communicate with a PC with corresponding software. Follow below procedure to connect communication wiring and install the software.

  • Page 18: Pin Assignment For Rs-232 Communication Port

    9-1. Pin Assignment for RS-232 Communication Port Definition PIN 1 RS232TX PIN 2 RS232RX PIN 3 PIN 4 8~12V PIN 5 PIN 6 PIN 7 PIN 8 9-2. Pin Assignment for BMS Communication Port Definition PIN 1 RS232TX PIN 2 RS232RX PIN 3 RS485B...
  • Page 19 Function Description Unit Condition Status Dry contact port: NO&C NC&C Power Unit is off and no output is powered. Open Close Battery voltage is lower than setting battery cut-off discharging voltage when Close Open grid is available. Battery voltage is lower than setting battery cut-off discharging voltage when grid is Close Open...

  • Page 20: Commissioning

    Commissioning Step 1: Check the following requirements before commissioning: Ensure the inverter is firmly secured  Check if the open circuit DC voltage of PV module meets requirement (Refer to  Section 6) Check if the open circuit utility voltage of the utility is at approximately same to ...

  • Page 21: Initial Setup

    Initial Setup Before inverter operation, it’s required to set up “Operation Mode” via software. Please strictly follow below steps to set up. For more details, please check software manual. Step 1: After turning on the inverter and installing the software, please click “Open Monitor”...
  • Page 22 Grid-Tie: PV power only can feed-in back to grid.  Off-Grid: PV power only provides power to the load and charge battery. No  feed-in back to grid is allowed. SECTION A: Standard: It will list local grid standard. It’s requested to have factory password to make any modifications.
  • Page 23 or PV” is selected in charging source section, this option is default selected. Under Grid-tie mode, this option is invalid. Allow to feed-in to the Grid: This option is only valid under Grid-tie and Grid-tie with backup modes. Users can decide if this inverter can feed-in to the grid. Allow battery to discharge when PV is available: This option is automatically determined by setting in “Load supply source (PV is available)”.
  • Page 24 Battery charging source: 1. PV and Grid (Default) It’s allowed to charge battery from PV power first. If it’s not sufficient, grid will charge battery. 2. PV only It is only allow PV power to charge battery. 3. None It is not allowed to charge battery no matter it’s from PV power or grid. Load supply source: When PV power is available: 1 PV, 2...
  • Page 25 PV energy supply priority setting: 1 Load, 2 Battery and 3 Grid. PV power will provide power to the load first. Then, it will charge battery. If there is any remaining power left, it will feed-in to the grid. Battery charging source: 1.
  • Page 26 Grid-tie with backup (III):  PV energy supply priority setting: 1 Load, 2 Grid and 3 Battery PV power will provide power to the load first. If there is more PV power available, it will feed-in to the grid. If feed-in power reaches max. feed-in power setting, the remaining power will charge battery.
  • Page 27 battery power is running out, grid will back up the load. NOTE: This option will become ineffective during AC charging time and the priority will automatically become 1 Grid and 2 Battery order. Otherwise, it will cause battery damage. Grid-tie with backup (IV): Users are only allowed to set up peak time and off- ...
  • Page 28 Battery charging source: PV and grid charge battery PV power will charge battery first during off-peak time. If it’s not sufficient, grid will charge battery. Load supply source: 1 PV, 2 Grid, 3 Battery When battery is fully charged, remaining PV power will provide power to the load first.
  • Page 29 PV energy supply priority setting: 1 Load, 2 Battery PV power will provide power to the load first and then charge battery. Feed-in to the grid is not allowed under this mode. At the same time, the grid relay is connected in Inverter mode.
  • Page 30 Off-Grid (II)  PV energy supply priority setting: 1 Battery, 2 Load PV power will charge battery first. After battery is fully charged, if there is remaining PV power left, it will provide power to the load. Feed-in to the grid is not allowed under this mode.
  • Page 31 Off-Grid (III)  PV energy supply priority setting: 1 Load, 2 Battery PV power will provide power to load first and then charge battery. Feed-in to the grid is not allowed under this mode. The grid relay is NOT connected in Inverter mode.

  • Page 32: Operation

    Operation 12-1. Interface The operation LCD panel, shown in the chart below, includes four touchable function keys and a LCD display to indicate the operating status and input/output power information. LCD display Touchable function keys NOTICE: To accurately monitor and calculate the energy generation, please calibrate the timer of this unit via software every one month.
  • Page 33 Display Function Indicates AC input voltage and frequency. V: voltage, Hz: frequency, L1/L2/L3: Line phase Indicates AC output power, voltage, frequency, or current. kw: active power, V: voltage, Hz: frequency, A: current L1/L2/L3: AC output phase Indicates PV input voltage, power or current. V: voltage, W: power, P1: PV input 1, P2: PV input 2 A: current Allow AC and PV charging...

  • Page 34: Touchable Function Keys

    Indicates AC output for loads is enabled and inverter is providing power to the connected loads. Indicates AC output for loads is enabled but there is no power provided from inverter. At this time, no battery and the utility are available. Only PV power exists but is not able to provide power to the connected loads.

  • Page 35: Lcd Setting

    12-4. LCD Setting After touching and holding “UP” and “DOWN” button for 2 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. Prog Description Selectable option...
  • Page 36 LIb-protocol compatible Select “LIb” if using Lithium battery battery compatible to Lib protocol. If selected, programs of4, 7, 8and 9 will be automatically set up. No need for further setting. party Lithium battery If selected, programs of 4, 7, ���� 8 and 9 will be automatically Battery type set up.
  • Page 37 Default setting: 56.0V Setting range is from 48.0V to 60.0V. Increment of each Bulk charging click is 0.1V. voltage (C.V voltage) Default setting: 54.0V Setting range is from 48.0V Floating to 60.0V. Increment of each charging click is 0.1V. voltage Low DC cut off Default setting:42.0 Setting range is from 40V to...
  • Page 38 Grid-tie with backup Mode Grid-tie with backup I Battery-Load-Grid: PV power will charge battery first, then provide power to the load. If there is any remaining power left, it will feed-in to the grid. Grid-tie with backup II Load-Battery-Grid: PV power will provide power to the load first.
  • Page 39 Off-Grid III Load-Battery: PV power will provide power to load first and then charge battery. Feed-in to the grid is not allowed under this mode. The grid relay is NOT connected. Grid-Tie Mode PV power only feeds-in to the grid. No priority setting is available.
  • Page 40 SUB(default) Solar-grid-battery: PV power will provide power to the load first. If it’s not sufficient, grid will provide power to the load. If grid is not available at the same time, battery power will back Load supply source (PV is Solar-Battery-Grid: available) PV power will provide power...
  • Page 41 Stop charging 00:00 (Default) The setting range of start time for charging time for AC charger second is from 00:00 to 23:00. duration of AC Increment of each click is 1 charge hour. 00:00 (Default) The setting range of AC Scheduled output on is from 00:00 to time for AC...
  • Page 42 Alarm on in battery mode Alarm off in battery mode (default) Alarm control at battery mode Activate lithium battery Activate lithium battery Activate enable(default) disable lithium battery when the device is powered on Single: This inverter is Parallel: This inverter is used in single phase operated in parallel system.

  • Page 43: Query Menu Operation

    For hour setting, the range is Time setting – from 00 to 23. Hour For day setting, the range is Time setting– from 00 to 31. For month setting, the range Time setting– is from 01 to 12. Month For year setting, the range is Time setting –...
  • Page 44 Frequency, voltage, power or percentage of AC output  Procedure Input voltage or power of PV input.  Procedure...
  • Page 45 Switch LCD Displayed Information 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 LCD display information Real date：2020-08-18 Real date Real time：10:08 Real time...
  • Page 46 PV energy generated this month =8Wh. PV energy generated today. PV energy generated this month = 8kWh. PV energy generated this month. PV energy generated this year = 108kWh PV energy generated this year.
  • Page 47 Total PV energy generation = 108kWh. PV energy generated totally. Main CPU version 01.01. Main CPU version checking. Secondary CPU version 01.01. Secondary CPU version checking.

  • Page 48: Operation Mode & Display

    Remote panel version 16.00 Remote panel version checking Warning code：08 Warning code 12-6. Operation Mode & Display Below is only contained LCD display for grid-tie with backup mode (I). If you need to know other operation mode with LCD display, please check with installer. Inverter mode with grid connected This inverter is connected to grid and working with DC/INV operation.
  • Page 49 PV power is sufficient to charge the battery first. However, remaining PV power is not sufficient to back up the load. Therefore, remaining PV power and the utility are supplying power to the connected load. PV power is generated, but not sufficient enough to charge battery by itself.
  • Page 50 PV power is sufficient to provide power to loads and feed power back to the grid. PV power and utility are providing power to the connected loads because of insufficient PV power. Inverter mode without grid connected This inverter is working with DC/INV operation and not connecting to the grid. LCD Display Description PV power is sufficient to charge...
  • Page 51 Bypass mode The inverter is working without DC/INV operation and connecting to the loads. LCD Display Description Only utility is charging battery and providing power to connected loads. Only utility is available to provide power to connected loads. Standby mode : The inverter is working without DC/INV operation and load connected.

  • Page 52: Charging Management

    Charging Management Default Charging Parameter Note Value It can be adjusted via software from Charging current 5Amp to 120Amp. It can be adjusted via software from Floating charging voltage (default) 54.0 Vdc 50Vac to 62Vdc. Max. absorption charging voltage It can be adjusted via software from 56.0 Vdc (default) 50Vac to 62Vdc.
  • Page 53 If using sealed lead acid battery, please set up the max. charging current according to below formula: The maximum charging current = Battery capacity (Ah) x 0.2 For example, if you are using 300 Ah battery, then, maximum charging current is 300 x 0.2=60 (A).

  • Page 54: Maintenance & Cleaning

    Maintenance & Cleaning Check the following points to ensure proper operation of whole solar system at regular intervals. Ensure all connectors of this inverter are cleaned all the time.  Before cleaning the solar panels, be sure to turn off PV DC breakers. ...

  • Page 55: Trouble Shooting

    Trouble Shooting When there is no information displayed in the LCD, please check if PV module/battery/grid connection is correctly connected. NOTE: The warning and fault information can be recorded by remote monitoring software. 15-1. Warning List There are 17 situations defined as warnings. When a warning situation occurs, icon will flash.

  • Page 56: Fault Reference Codes

    15-2. Fault Reference Codes When a fault occurs, the icon will flash as a reminder. See below for fault codes for reference. Situation Fault Solution Fault Event Possible cause Code Bus voltage over Surge 1. Restart the inverter. 2. If the error message still remains, please contact your installer.
  • Page 57 GFCI fault Leakage current 1. Check the wire and panels excceds the limit. which may cause the leakage. 2. If the error message still PV ISO fault The resistance remains, please contact your between PV and installer. ground is too low. INV DC current over Utility fluctuates.

  • Page 58: Specifications

    Specifications MODEL LV 6KW RATED POWER 6000 W PV INPUT (DC) Maximum DC Power 7500 W Nominal DC Voltage 360 VDC Maximum DC Voltage 600 VDC Working DC Voltage Range 120 VDC ~ 550 VDC Start-up Voltage / Initial Feeding Voltage 125 VDC / 160 VDC MPP Voltage Range / Full Load MPP 120 VDC ~ 550 VDC...
  • Page 59 GENERAL PHYSICAL Dimension, D X W X H (mm) 215.5 x 515 x 700 Net Weight (kgs) INTERACE Communication Port RS-232/USB Intelligent Slot RS232/USB,BMS, WIFI ENVIRONMENT Protective Class Ingress Protection Rating IP65 Humidity 0 ~ 90% RH (No condensing) Operating Temperature -25 to 60°C (Power derating above 45°C) Altitude Max.

  • Page 60: Appendix I: Parallel Installation Guide

    Appendix I: Parallel Installation Guide Introduction This inverter can be used in parallel with maximum 6 units. The supported maximum output power is 36KW/36KVA. Parallel cable You will find the following items in the package: Parallel communication cable Current sharing wires Overview Current sharing port Parallel communication port...
  • Page 61 Mounting the Unit When installing multiple units, please follow below chart. NOTE: For proper air circulation to dissipate heat, it’s necessary to 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.
  • Page 62 inverters connected in parallel. Regarding cable size of AC input and output, please also follow the same principle. CAUTION!! Please install a breaker at the battery side. This will ensure the inverter can be securely disconnected during maintenance and fully protected from overcurrent of battery.
  • Page 63 Inverters Configuration Two inverters in parallel: Power Connection Communication Connection Six inverters in parallel: Power Connection Communication Connection...
  • Page 64 Setting and LCD Display Setting Program: The parallel function setting is only available by SolarPower. Please install SolarPower in your PC first. For setting, you can set the inverter one by one through USB port. Use USB to synchronize the parameters: ...
  • Page 65 Fault code display: Fault Code Fault Event Icon on Power feedback protection Relay board driver loss Relay board communication loss Firmware version inconsistent Current sharing fault CAN fault Host loss Synchronization loss Commissioning Step 1: Check the following requirements before commissioning: Correct wire connection.
  • Page 66 LCD display in Master unit LCD display in Slave unit 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.

  • Page 67: Appendix Ii: The Wi-Fi Operation Guide

    Appendix II: The Wi-Fi Operation Guide 1. Introduction Wi-Fi module can enable wireless communication between hybrid inverters and monitoring platform. Users have complete and remote monitoring and controlling experience for inverters when combining Wi-Fi module with SolarPower APP, available for both iOS and Android based device.
  • Page 68 screen. In the screen, tap “Register” to access “User Registration” page. Fill out all required information accordingly. You can scan the Wi-Fi Module PN by tapping icon Tap “Register” after you have completed the registration. Then, a “Registration success” window will pop up. Tap “Go now” to continue setting local Wi-Fi network connection.
  • Page 69 Enter the “SettingsWi-Fi” and select connected Wi-Fi name. The connected Wi-Fi name is the same to your Wi-Fi PN number and enter default password “12345678”. Then, return to WatchPower APP and tap “ ” button when Wi-Fi module is connected successfully. Step 3: Wi-Fi Network settings icon to select your local Wi-Fi router name (to access the internet) and enter password.
  • Page 70 Step 4: Tap “Confirm” to complete the Wi-Fi configuration between the Wi-Fi module and the Internet. If the connection fails, please repeat Step 2 and 3. Diagnose Function If the module is not monitoring properly, please tap “ ” on the top right corner of the screen for further details.
  • Page 71 setting, tap “Rediagnosis” to re-connect again. 2-3. Login and APP Main Function After finishing the registration and local Wi-Fi configuration, enter registered name and password to login. Note: Tick “Remember Me” for your login convenience afterwards. Overview After login is successfully, you can access “Overview” page to have overview of your monitoring devices, including overall operation situation and Energy information for Current power and Today power as below diagram.
  • Page 72 Devices Tap the icon (located on the bottom) to enter Device List page. You can review all devices here by adding or deleting Wi-Fi Module in this page. Add device Delete device icon on the top right corner and enter part number by scanning bar code to add Wi-Fi module.
  • Page 73 For more information about Device List, please refer to the section 2.4. In ME page, users can modify “My information”, including【User’s Photo】,【Account security】, 【Modify password】,【Clear cache】,and【Log-out】, shown as below diagrams. 2-4. Device List In Device List page, you can pull down to refresh the device information and then tap any device you want to check up for its real-time status and related information as well as to change parameter settings.
  • Page 74 Device Mode On the top of screen, there is a dynamic power flow chart to show live operation. It contains five icons to present PV power, inverter, load, utility and battery. Based on your inverter model status, there will be【Standby Mode】,【Line Mode】,【Battery Mode】. 【Standby Mode】Inverter will not power the load until “ON”...
  • Page 75 Device Alarm and Name Modification In this page, tap the icon on the top right corner to enter the device alarm page. Then, you can review alarm history and detailed information. Tap the icon on the top right corner, a blank input box will pop out. Then, you can edit the name for your device and tap “Confirm”...
  • Page 76 【Basic Information】displays basic information of the inverter, including AC voltage, AC frequency, PV input voltage, Battery voltage, Battery capacity, Charging current, Discharging current, Output voltage, Output frequency, Output apparent power, Output active power and Load percent. Please slide up to see more basic information. 【Production Information】displays Model type (Inverter type), Main CPU version, Bluetooth CPU version and secondary CPU version.
  • Page 77 Parameter setting list: Item Description Output Source Priority Output source priority selection Input Voltage Range Input voltage range selection AC Output Rating To set output rating voltage Output Setting Voltage AC Output Rating To set output rating frequency Frequency Battery Type Select connected battery type Battery Cut-off Voltage Set battery cut-off voltage...
  • Page 78 Item Description Solar Supply Priority Set solar power as priority to charge the battery or to power the load. Reset PV Energy If clicked, PV energy storage data will Storage be reset. Start Time For Enable The setting range of start charging time AC Charge Working for AC charger is from 00:00 to 23:00.

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