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Qoltec 53873 Instruction Manual

Solar inverter 4kw/6kw
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Model: 53873 53874

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Summary of Contents for Qoltec 53873

  • Page 1 Model: 53873 53874...
  • Page 2 INSTRUCTION MANUAL SOLAR INVERTER 4KW/6KW Model : 53873, 53874...

  • Page 3: Information About This Manual

    INTRODUCTION Thank you for your trust and for choosing our solar inverter. We are confident that the product will meet your expectations. This manual will help you to familiarise yourself with the unit and facilitate the configuration process, as well as help you with any problems that may arise during the operation of the unit.

  • Page 4: Basic System Architecture

    inverter. When using CIGS modules, please note the lack of grounding. NOTE: The use of a PV junction box with surge protection is required. Otherwise it will cause damage to the inverter when lightning strikes the PV modules. ABOUT THE SOLAR INVERTER It is a multifunctional inverter, combining the functions of inverter, solar charger and battery charger, offering uninterrupted power support in a single package.

  • Page 5: Installation

    9. Automatic switch 10.Potential-free contact 11.USB port as USB communication port and USB function port 12.RS 232 communication port 13.BMS communication port: CAN, RS 485 or RS 232 14.Output grounding INSTALLATION Unpacking and inspection Inspect the unit before installation. Make sure that nothing inside the packaging is damaged.
  • Page 6 current Dimensions value D (mm) L(mm) 165A 2*4AWG 33.2 5 Nm 129.6A 1*4AWG 39.2 2*4AWG 33.2 Follow the steps below to implement the battery connection: The 4 KW model supports a 24VDC system and the 6 kW model supports a 48VDC system. Connect all batteries according to the table below.
  • Page 7 Follow the steps below to implement the AC input/output connection: Before connecting the AC input/output, first open the DC protection or disconnector Remove the insulating sleeves for approximately 10 mm from the five screw terminals. Connect the AC input wires according to the polarity indicated on the terminal block and tighten the terminal screws.

  • Page 8: Inverter Model

    WARNING: As this inverter is not isolated, the following are accepted: monocrystalline modules, polycrystalline modules with class A and CIGS modules. To avoid faults, do not connect photovoltaic modules with possible current leakage to the inverter. For example, grounded photovoltaic modules will cause current leakage to the inverter. When using CIGS modules, remember NOT to connect the ground.

  • Page 9: Final Assembly

    below. Connection of photovoltaic module cables (Figure 12 in the Annex) To connect the photovoltaic module, follow the steps below: Remove the insulation sleeve for approximately 7 mm from the positive and negative cable. For optimum performance, we recommend the use of cable bushings. Specification SOLAR INPUT Number of Total power...
  • Page 10 Status Status Potential-free contact units port: (Figure 17 in annex) NC & C NO & C Excluded The device is switched off and no output is Close Open power powered. supply Switching output Programme 01 Battery voltage Open Close powered <...
  • Page 11 Rounded arrow To exit the settings icon Access to mode To enter USB setup mode USB settings For the final selection ↑ Down For the next selection ↑ Enter To confirm/enter the selection in mode ← Settings. LCD display icons (Illustration 20 in the appendix) Icon Description...
  • Page 12 Battery information (Illustration 30 in the appendix) Indicates the level of battery charge from 0-24%, 25-49%, 50-74% and 75- 100% in the battery mode and charging status in line mode. When the battery is charging, the battery charging status is displayed. Status Voltage LCD display...
  • Page 13 (Illustration Indicates an overload appendix) (Illustration Indicates load levels of 0-24%, 25-49%, 50-74% appendix) 75-100%. 0%~24% 25%~49% (Illustration 41 in the (Illustration 42 in the appendix) appendix) 50%~74% 75%~100% (Illustration 43 in the (Illustration 44 in the appendix) appendix) Display of charger source priority settings (Illustration Indicates that setting programme 16 "Charger appendix)

  • Page 14: Lcd Display Settings

    (Illustration Indicates that the device connects to the panel appendix) photovoltaic. (Illustration Indicates the type of battery. appendix) (Illustration Indicates that parallel mode is in operation. appendix) (Illustration Indicates that the device alarm is off. appendix) (Illustration Indicates appendix) Wi-Fi transmission works. (Illustration Indicates appendix)
  • Page 15 to supply power to all connected loads, battery energy will provide energy to loads at the same time at the same time. The grid only supplies power when battery voltage drops to a low warning voltage level or programme 12. Maximum charging 60A (default)
  • Page 16 Pylontech battery If selected, programmes (Illustration 68 in Annex) 02, 26, 27 and 29 will be automatically confi gured. There is no need for further settings. WECO battery (for 48-volt If selected, programmes model only) 02, 12, 26, 27 and 29 will (Illustration Automatic appendix)
  • Page 17 Automatic restart after Restart disabled (default) Enable restart overload (Figure 73 in the appendix) (Illustration 74 in the occurs appendix) Automatic restart when Restart disabled (default) Enable restart finished (Illustration 75 in Annex) (Illustration 76 in the temperature occurs appendix) Output frequency 50Hz (default) (Illustration 60Hz...
  • Page 18 voltage point or SOC FUL and from percentage back to 24V to 29V. The increment of each click is 1V. battery mode when Fully charged battery 27V (default) selecting "SBU" (SBU (Illustration (Illustration 87 in the priority) in programme appendix) appendix) Available options for the 48V model: Setting range is FUL and from...
  • Page 19 Automatic return Return to default settings If selected, no matter default settings display display screen (default) how users switch the screen (Illustration 96 in Annex) display screen will automatically revert to default display screen (Input Voltage / Output Voltage). Stay on the last screen When this option...
  • Page 20 range of settings is 48.0 V to 6 1.0 V. The increment of each click is 0.1V. Floating charge voltage Options available for the 24V model: (Illustration in Annex 108) user-defined option is selected in the programme this programme can can be configured.
  • Page 21 to the line 48V: mode 42.0 V (default) (Figure 111 user-defined in the appendix) option is selected in programme this programme can can be configured. setting range from 42.0 V to 48.0 V. The increment of each click is 0.1V. The low DC cut-off voltage will be set to the setting value of regardless...
  • Page 22 Battery equalisation 60min (default) (Figure 117 setting range time in the appendix) from 5 min to 900 min. Each Click takes 5 minutes. Aligned battery timeout 120 (default) setting range (Illustration 118 in Annex) from 5 min to 900 min. Each Click takes 5 minutes.
  • Page 23 48V default setting: 42.0V "Defined User" (Illustration selected in the appendix) programme this setting range is between 42.0 V and 61.0 V for 48 V model. Each click increments is 0.1 V. 0% (default) If any lithium battery (Illustration selected appendix) programme 05, then value...
  • Page 24 hour. If the setting range is from 00 to 08 , the second option will be on until 09:00. During during this period, it will be amended disabled if any value of setting achieved programme 60 or 61. Deleting all data lo g Does reset (default...
  • Page 25 LED lighting function. RGB LED brightness Normal (default) (Illustration in Annex 144) (Illustration Annex) High (Illustration appendix) RGB LED lighting speed Low Normal (default) (Figure (Illustration 147 in Annex) 148 in the appendix) High (Illustration appendix) RGB LED effect Power cycling Drive wheel (Illustration (Illustration 151 in the...
  • Page 26 Percentage battery capacity Some of the LED lighting (Default) will changed (Illustration depending appendix) percentage of battery capacity. If "Solid on" is selected in #94, the LED ring will light background colour set in #96. "Power wheel" selected in #94, the LED ring will light up in 4 levels.
  • Page 27 Battery charge/discharge selected, status colour will (Illustration background colour set in appendix) battery charging state. The LED colour will be the data colour set in #97 in the discharged state battery. RGB LED colour context Pink Orange (Illustration (Illustration 160 in the appendix) appendix) Yellow...
  • Page 28 (Illustration (Illustration 178 in the appendix) appendix) Blue Blue (default) (Illustration (Illustration appendix) Annex) Purple Other : If selected, the (Illustration background colour is set appendix) using software. (Illustration 182 in the appendix) Setting the timer for the When this programme is accessed, "OPP" will appear output on the LCD display.
  • Page 29 set, press the "← " to confirm all settings. Solar energy first Solar and utility energy (Illustration (Illustration 188 in the appendix) appendix) Solar energy only (Illustration appendix) There are three USB function settings, such as firmware update, data log export and rewriting internal parameters from a USB drive.
  • Page 30 Data export log After entering the USB function (Illustrations 193 and 194 in settings, press the "↓ " button the appendix) twice to switch to the "data log export" function and the "LOG" field will appear subtitle LCD. Press the "← " button to confirm data export...
  • Page 31 of collective = 56.4 V, Battery Charging current=20A (Illustration 198 in Annex) voltage, charging stage Battery voltage=53.9 V, floating charge voltage=54.0 Configured battery Charging current=1A (Illustration parameters appendix) Charging Battery voltage = 50.4 V, low DC cut-off voltage discharging = 44,0 V, current Discharge current=48A (Illustration 200 in the appendix)
  • Page 32 Load output this month Load output energy this month = 8.88 k Wh. (Illustration 213 in the appendix) Output energy load this Load output energy this year = 88.8 k Wh. year (Illustration 214 in the appendix) Total load output energy Total load output energy=888 kWh.
  • Page 33 main. It will If 'SUB' (solar energy first) is selected as the also charge output source priority and solar energy is not the battery in sufficient to provide the load, solar energy and line mode. the grid will provide the load and charge the battery at the same time.
  • Page 34 Bus voltage is too low Soft start of inverter failed DC voltage too high at AC output Current sensor failure Output voltage is too low PV voltage exceeds the permissible scope Warning indicator Code Warning event Audible alarm Flashing icon warning The fan is blocked when the Sound signal three...

  • Page 35: Specification

    inverter from twilight and increases the reliability of the product in harsh environments. Cleaning and maintenance Step 1: Remove the screws on the sides of the inverter. (ILLUSTRATION 232 IN THE APPENDIX) Step 2: The dustproof housing can then be removed and the foam air filter removed, as shown in the table below.
  • Page 36 Low voltage losses 170Vac± 7V (UPS); 90Vac± 7V (Devices) Low return voltage 180Vac± 7V (UPS); 100 Vac± 7 V (appliances) High loss voltage 280Vac± 7V High return loss voltage 270Vac± 7V Maximum input voltage 300Vac Nominal frequency 50Hz / 60Hz (auto detection) input Low loss frequency 40 ±...
  • Page 37 Displacement capacity 2* rated power for 5 seconds Max. AC output current 30Amp 40Amp Nominal DC input voltage 24VDC 48VDC Cold start voltage 23.0 VDC 46.0 VDC Low DC warning voltage at <50% load 23.0 VDC 48VDC @ load 22.0 VDC 44.0 VDC ≥...

  • Page 38: Problem Solving

    (mains charger plus solar charger) Table 4 General specifications MODEL Operating temperature -10°C to 50°C range Storage temperature -15°C~ 60°C Moisture Relative humidity 5% to 95% (non-condensing) PROBLEM SOLVING Problem LCD/LED/ Explanation / What to do Buzzer possible cause device Display Battery voltage is Recharge the battery.
  • Page 39 range generator) input is correct. (UPS->Equipment) The green LED Set "Solar First" Change the priority of the flashes. priority output source to U� lite first. source output. When the unit LCD display and battery Check that the battery cables is switched on, LEDs flash disconnected.

  • Page 40: Appendix I: Installation Of Bms Communication Introduction

    recurs, return it to the repair overvoltage. centre. Error code 52 Bus voltage is too low. Error code 55 Output voltage is unsustainable. Error code 59 PV v Reduction in the number of PV outside modules connected in series. permissible range Appendix I: Installation of BMS communication Introduction If connecting to a lithium battery, it is recommended to purchase a custom RJ45...
  • Page 41 ESS LIO I 4810 (Illustration 241 in the appendix) The ID switch indicates a unique ID code for each battery module. For normal operation, a unique ID is required to be assigned to each battery module. We can set the ID code for each battery module by rotating the PIN number on the ID switch.
  • Page 42 setting subordinate batteries is unlimited. Multi-group condition. It is required to configure the main battery on the The fifth group with this setting subordinate batteries is unrestricted. NOTE: The maximum number of lithium battery groups is 5, and the maximum number for each group should be checked with the battery manufacturer.
  • Page 43 Step 4: Switch on the inverter. (Illustration 251 in the appendix) Step 5: Ensure that the battery type 'PYL' is selected in LCD 5. (Illustration 252 in the appendix) If the communication between the inverter and the battery is successful, the battery icon on the LCD display starts flashing.
  • Page 44 Code Description If the battery status does not allow charging and discharging after successful communication between the inverter and the battery, a code 60 will be displayed to stop charging and discharging the battery. Loss of communication (only available if the battery type is not set as "AGM", "Flooded"...

  • Page 45: Appendix Ii: Wi-Fi User Manual Introduction

    Appendix II: Wi-Fi user manual Introduction The Wi-Fi module enables wireless communication between off-grid inverters and the monitoring platform. By combining the Wi-Fi module with the SmartESS app, available for both iOS and Android devices, users are able to monitor and control the inverters remotely. All data loggers and parameters are stored in iCloud.
  • Page 46 right of the first column to scan the PN number QR code on the Wi-Fi module label to enter the PN number, enter the username, password, email address, phone number and tap the user agreement and the Register button to create an account. (Illustration 271 in the appendix) Logging Enter your user name and password to log in to your account, click on the Wi-Fi module you...
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